/* ==========================================================================
   BASE.CSS — Hey, Teacher! Sistema de Gestão
   Variáveis, reset, tipografia e todos os componentes compartilhados
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CUSTOM PROPERTIES (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Cores principais */
  --color-primary:         #032d6f;
  --color-primary-hover:   #043a8e;
  --color-primary-active:  #021e4a;
  --color-primary-light:   #1a5eb8;
  --color-primary-lighter: #c5d8f8;
  --color-primary-surface: #eef4ff;

  --color-secondary:         #a60404;
  --color-secondary-hover:   #c20505;
  --color-secondary-active:  #7a0303;
  --color-secondary-light:   #d10606;
  --color-secondary-lighter: #fbc5c5;
  --color-secondary-surface: #fff0f0;

  /* Semânticas */
  --color-success:         #15803d;
  --color-success-light:   #22c55e;
  --color-success-surface: #dcfce7;

  --color-warning:         #b45309;
  --color-warning-light:   #f59e0b;
  --color-warning-surface: #fef3c7;

  --color-danger:          #dc2626;
  --color-danger-hover:    #b91c1c;
  --color-danger-surface:  #fee2e2;

  --color-info:            #0369a1;
  --color-info-light:      #0ea5e9;
  --color-info-surface:    #e0f2fe;

  /* Neutros */
  --color-white:   #ffffff;
  --color-black:   #0d0d0d;
  --gray-50:       #f9fafb;
  --gray-100:      #f3f4f6;
  --gray-200:      #e5e7eb;
  --gray-300:      #d1d5db;
  --gray-400:      #9ca3af;
  --gray-500:      #6b7280;
  --gray-600:      #4b5563;
  --gray-700:      #374151;
  --gray-800:      #1f2937;
  --gray-900:      #111827;

  /* Texto */
  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted:     var(--gray-400);
  --text-inverse:   var(--color-white);

  /* Layout */
  --sidebar-width:      260px;
  --sidebar-collapsed:  72px;
  --topbar-height:      64px;
  --content-padding:    24px;

  /* Bordas */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-xs:  0 1px 2px rgba(0,0,0,.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
  --shadow-lg:  0 10px 15px rgba(0,0,0,.08), 0 4px 6px rgba(0,0,0,.04);
  --shadow-xl:  0 20px 25px rgba(0,0,0,.10), 0 8px 10px rgba(0,0,0,.05);
  --shadow-2xl: 0 25px 50px rgba(0,0,0,.18);
  --shadow-primary: 0 4px 14px rgba(3,45,111,.30);
  --shadow-secondary: 0 4px 14px rgba(166,4,4,.30);

  /* Transições */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(.34,1.56,.64,1);

  /* Z-index */
  --z-sidebar:  100;
  --z-overlay:  110;
  --z-modal:    120;
  --z-toast:    200;

  /* Controles — altura unificada para inputs, selects e botões */
  --control-h:    40px;
  --control-h-sm: 32px;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-weight: 600; line-height: 1.3; }

/* --------------------------------------------------------------------------
   3. ANIMATIONS
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-24px) rotate(6deg); }
}

@keyframes floatReverse {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(20px) rotate(-5deg); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .5; }
}

@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position:  200% center; }
}

/* --------------------------------------------------------------------------
   4. LOGIN PAGE
   -------------------------------------------------------------------------- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #051f50 60%, #0a0a1a 100%);
  padding: 24px;
  overflow: hidden;
  position: relative;
}

/* Animated background shapes */
.login-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.login-bg__shape {
  position: absolute;
  border-radius: 50%;
  opacity: .12;
}

.login-bg__shape--1 {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--color-primary-light), transparent 70%);
  top: -120px;
  right: -80px;
  animation: float 8s ease-in-out infinite;
}

.login-bg__shape--2 {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, var(--color-secondary), transparent 70%);
  bottom: -100px;
  left: -60px;
  animation: floatReverse 10s ease-in-out infinite;
}

.login-bg__shape--3 {
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, #4a90e2, transparent 70%);
  top: 50%;
  left: 10%;
  animation: float 12s ease-in-out infinite 3s;
}

/* Login container */
.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  animation: slideUp var(--transition-slow) both;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  width: 72px;
  height: 72px;
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 2rem;
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.login-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -.02em;
}

.login-subtitle {
  color: rgba(255,255,255,.6);
  font-size: .875rem;
  margin-top: 4px;
}

/* Login card */
.login-card {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255,255,255,.5);
}

.login-form { display: flex; flex-direction: column; gap: 20px; }

.login-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .875rem;
}

.link-subtle {
  color: var(--color-primary);
  font-size: .875rem;
  transition: color var(--transition-fast);
  /* Permite uso em <button> sem quebrar o estilo */
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
}
.link-subtle:hover { color: var(--color-primary-hover); text-decoration: underline; }

.login-alert {
  font-size: .875rem;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  display: none;
}
.login-alert.error {
  background: var(--color-danger-surface);
  color: var(--color-danger);
  border: 1px solid var(--color-secondary-lighter);
  display: block;
}
.login-alert.success {
  background: var(--color-success-surface);
  color: var(--color-success);
  display: block;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  color: rgba(255,255,255,.4);
  font-size: .75rem;
}

/* --------------------------------------------------------------------------
   5. APP LAYOUT — SIDEBAR
   -------------------------------------------------------------------------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: var(--sidebar-width);
  background: var(--color-primary);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: transform var(--transition-base);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
}

.sidebar-logo i {
  font-size: 1.375rem;
  color: var(--color-primary-lighter);
  flex-shrink: 0;
}

.sidebar-logo-text { line-height: 1.2; }

.sidebar-close {
  color: rgba(255,255,255,.5);
  padding: 6px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: none;
}
.sidebar-close:hover { color: var(--color-white); background: rgba(255,255,255,.1); }

/* Sidebar nav */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 12px;
  scrollbar-width: none;
}
.sidebar-nav::-webkit-scrollbar { display: none; }

.nav-list { display: flex; flex-direction: column; gap: 2px; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,.65);
  font-size: .9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-white);
  background: rgba(255,255,255,.08);
}

.nav-item--active .nav-link {
  color: var(--color-white);
  background: rgba(255,255,255,.13);
  box-shadow: inset 3px 0 0 var(--color-primary-lighter);
}

.nav-icon { font-size: 1rem; width: 20px; text-align: center; flex-shrink: 0; }
.nav-label { white-space: nowrap; }

/* Sidebar footer */
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; }

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-lighter);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.user-details { min-width: 0; }
.user-name { display: block; color: var(--color-white); font-size: .875rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { display: block; color: rgba(255,255,255,.45); font-size: .75rem; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: calc(var(--z-sidebar) - 1);
  backdrop-filter: blur(2px);
  animation: fadeIn var(--transition-fast) both;
}

/* --------------------------------------------------------------------------
   6. APP LAYOUT — TOPBAR
   -------------------------------------------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  height: var(--topbar-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 var(--content-padding);
  z-index: 50;
  box-shadow: var(--shadow-xs);
}

.sidebar-toggle {
  color: var(--gray-600);
  padding: 8px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: none;
}
.sidebar-toggle:hover { background: var(--gray-100); color: var(--gray-900); }

.topbar-title { flex: 1; }
.topbar-title h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.01em;
}

.topbar-actions { display: flex; align-items: center; gap: 10px; }

.topbar-date {
  font-size: .8125rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   7. APP LAYOUT — MAIN
   -------------------------------------------------------------------------- */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-base);
}

.page-content {
  flex: 1;
  padding: var(--content-padding);
  display: flex;
  flex-direction: column;
  gap: 24px;
  animation: fadeIn var(--transition-base) both;
}

/* --------------------------------------------------------------------------
   8. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--control-h);
  padding: 0 20px;
  border-radius: var(--radius-md);
  font-size: .875rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(3,45,111,.35);
}
.btn--primary:active { transform: translateY(0); }

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-secondary);
}
.btn--secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn--ghost:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-900);
}

.btn--danger {
  background: var(--color-danger);
  color: var(--color-white);
  border-color: var(--color-danger);
}
.btn--danger:hover {
  background: var(--color-danger-hover);
  border-color: var(--color-danger-hover);
  transform: translateY(-1px);
}

.btn--sm { height: var(--control-h-sm); padding: 0 14px; font-size: .8125rem; gap: 6px; }
.btn--lg { height: 48px; padding: 0 28px; font-size: 1rem; }
.btn--full { width: 100%; }

.btn-icon-only {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,.55);
  transition: all var(--transition-fast);
}
.btn-icon-only:hover { color: var(--color-white); background: rgba(255,255,255,.1); }

/* Loader state */
.btn-loader {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.btn.is-loading .btn-text,
.btn.is-loading .btn-icon { display: none; }
.btn.is-loading .btn-loader { display: block; }
.btn.is-loading { pointer-events: none; opacity: .8; }

/* --------------------------------------------------------------------------
   9. FORMS
   -------------------------------------------------------------------------- */
.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-700);
  line-height: 1;
}

.required { color: var(--color-secondary); margin-left: 2px; }

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 13px;
  color: var(--gray-400);
  font-size: .9rem;
  pointer-events: none;
  transition: color var(--transition-fast);
}

.form-input,
.form-select {
  width: 100%;
  height: var(--control-h);
  padding: 0 13px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--text-primary);
  font-size: .9rem;
  transition: all var(--transition-fast);
  outline: none;
  box-sizing: border-box;
}

.form-textarea {
  width: 100%;
  padding: 10px 13px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--text-primary);
  font-size: .9rem;
  transition: all var(--transition-fast);
  outline: none;
  box-sizing: border-box;
  resize: vertical;
  min-height: 80px;
}

.input-wrapper .form-input { padding-left: 38px; padding-right: 13px; }

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(3,45,111,.12);
}

.form-input::placeholder { color: var(--gray-400); }
.form-input:disabled,
.form-select:disabled { background: var(--gray-100); color: var(--gray-500); cursor: not-allowed; }

.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

.form-select--sm { height: var(--control-h-sm); padding: 0 30px 0 10px; font-size: .8125rem; }
.form-input--sm  { height: var(--control-h-sm); padding: 0 10px; font-size: .8125rem; }

.form-error {
  font-size: .75rem;
  color: var(--color-danger);
  min-height: 16px;
  animation: slideUp var(--transition-fast) both;
}

.form-fieldset {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-legend {
  font-size: .8125rem;
  font-weight: 700;
  color: var(--color-primary);
  padding: 0 8px;
  display: flex;
  align-items: center;
  gap: 7px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.form-row { display: grid; gap: 16px; }
.form-row--2 { grid-template-columns: 1fr 1fr; }
.form-row--3 { grid-template-columns: 1fr 1fr 1fr; }

/* Toggle password */
.input-toggle-password {
  position: absolute;
  right: 12px;
  color: var(--gray-400);
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}
.input-toggle-password:hover { color: var(--gray-700); }

/* Checkbox */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: .875rem;
  color: var(--gray-700);
  user-select: none;
}

.checkbox-input { display: none; }

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  flex-shrink: 0;
  transition: all var(--transition-fast);
  position: relative;
}

.checkbox-input:checked + .checkbox-custom {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-input:checked + .checkbox-custom::after {
  content: '';
  position: absolute;
  inset: 3px 2px 2px 4px;
  border: 2px solid white;
  border-top: none;
  border-right: none;
  transform: rotate(-45deg);
}

/* Radio group */
.radio-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: .875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  user-select: none;
  color: var(--gray-600);
}

.radio-input { display: none; }

.radio-label--present  .radio-input:checked ~ * { color: var(--color-success); }
.radio-label--absent   .radio-input:checked ~ * { color: var(--color-danger); }
.radio-label--justified .radio-input:checked ~ * { color: var(--color-warning); }

.radio-label:has(.radio-input:checked) { background: var(--gray-50); border-color: var(--color-primary); color: var(--color-primary); }
.radio-label--present:has(.radio-input:checked)   { border-color: var(--color-success); background: var(--color-success-surface); color: var(--color-success); }
.radio-label--absent:has(.radio-input:checked)    { border-color: var(--color-danger); background: var(--color-danger-surface); color: var(--color-danger); }
.radio-label--justified:has(.radio-input:checked) { border-color: var(--color-warning); background: var(--color-warning-surface); color: var(--color-warning); }

/* Search */
.search-wrapper {
  position: relative;
  flex: 1;
  min-width: 0;
}

.search-wrapper--sm { flex: none; width: 100%; }

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: .875rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: var(--control-h);
  padding: 0 13px 0 36px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  background: var(--color-white);
  font-size: .875rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  outline: none;
  box-sizing: border-box;
}
.search-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(3,45,111,.1); }
.search-input::placeholder { color: var(--gray-400); }

/* --------------------------------------------------------------------------
   10. TOOLBAR / FILTER BAR
   -------------------------------------------------------------------------- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar--wrap { flex-wrap: wrap; }

.filter-group { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.filter-group--dates { gap: 8px; }

.filter-label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
  white-space: nowrap;
}

.date-filter { display: flex; align-items: center; gap: 6px; }

.results-count {
  font-size: .8125rem;
  color: var(--text-secondary);
  white-space: nowrap;
  margin-left: auto;
}

/* --------------------------------------------------------------------------
   11. CARDS GRID
   -------------------------------------------------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  animation: slideUp var(--transition-slow) both;
}

.cards-grid--classes { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }

/* Empty states span all grid columns */
.cards-grid > .empty-state,
.cards-grid--classes > .empty-state,
.payment-cards-grid > .empty-state {
  grid-column: 1 / -1;
  min-height: 300px;
  background: var(--color-white);
  border: 1.5px dashed var(--gray-200);
  border-radius: var(--radius-lg);
}

/* --------------------------------------------------------------------------
   12. STUDENT CARD
   -------------------------------------------------------------------------- */
.student-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.student-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.student-card:hover {
  border-color: var(--color-primary-lighter);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.student-card:hover::before { transform: scaleX(1); }

.student-card-header { display: flex; align-items: center; gap: 12px; }

.student-card-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-primary-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.student-card-info { flex: 1; min-width: 0; }
.student-card-name { font-weight: 700; font-size: .9375rem; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.student-card-level { font-size: .8125rem; color: var(--text-secondary); }

.student-card-meta { display: flex; flex-direction: column; gap: 6px; }

.student-card-meta-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .8125rem;
  color: var(--text-secondary);
}
.student-card-meta-item i { width: 14px; text-align: center; color: var(--gray-400); }

.student-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--gray-100);
}

/* --------------------------------------------------------------------------
   13. TEACHER CARD
   -------------------------------------------------------------------------- */
.teacher-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.teacher-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #16a34a, #4ade80);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.teacher-card:hover {
  border-color: var(--color-primary-lighter);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.teacher-card:hover::before { transform: scaleX(1); }

.teacher-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.teacher-card-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: #dcfce7;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  color: #16a34a;
  flex-shrink: 0;
}

.teacher-card-info { flex: 1; min-width: 0; }

.teacher-card-name {
  font-weight: 700;
  font-size: .9375rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.teacher-card-email {
  font-size: .8125rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.teacher-card-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.teacher-card-meta-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .8125rem;
  color: var(--text-secondary);
}

.teacher-card-meta-item i { width: 14px; text-align: center; color: var(--gray-400); }

.teacher-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--gray-100);
}

.badge--active   { background: #dcfce7; color: #16a34a; }
.badge--inactive { background: var(--gray-100); color: var(--gray-500); }

/* --------------------------------------------------------------------------
   14. MATERIAL CARD
   -------------------------------------------------------------------------- */
.material-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

.material-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--material-accent, var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.material-card:hover {
  border-color: var(--color-primary-lighter);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.material-card:hover::before { transform: scaleX(1); }

.material-card-icon {
  font-size: 2.25rem;
  line-height: 1;
}

.material-card-body { flex: 1; min-width: 0; }

.material-card-name {
  font-weight: 700;
  font-size: .9375rem;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.material-card-desc {
  font-size: .8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.material-card-category {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--radius-full);
  background: var(--color-primary-surface);
  color: var(--color-primary);
  font-size: .72rem;
  font-weight: 600;
}

.material-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--gray-100);
  gap: 8px;
}

.material-card-meta {
  font-size: .75rem;
  color: var(--text-secondary);
  flex: 1;
}

.material-delete-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: var(--radius-base);
  color: var(--gray-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  transition: background .15s, color .15s;
  flex-shrink: 0;
}
.material-delete-btn:hover { background: var(--color-danger-surface); color: var(--color-danger); }

/* Category pills */
.category-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.category-pill {
  padding: 5px 14px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--gray-200);
  background: transparent;
  color: var(--text-secondary);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}

.category-pill:hover    { background: var(--gray-50); }
.category-pill.active   {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* Preview modal */
.modal--preview { max-width: 960px; width: 95vw; }

.preview-body {
  padding: 0;
  height: 68vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-notice {
  padding: 8px 20px;
  font-size: .78rem;
  color: var(--text-secondary);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 6px;
}

.preview-iframe {
  flex: 1;
  border: none;
  width: 100%;
  height: 100%;
  display: block;
}

.preview-image-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 16px;
}

.preview-image { max-width: 100%; max-height: 100%; object-fit: contain; }

.preview-unsupported {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-secondary);
}

.preview-unsupported i { font-size: 3rem; color: var(--gray-300); }
.preview-unsupported p { font-size: .9rem; margin: 0; }

/* Folder grid + cards */
.folders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 8px;
}

.folder-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px 16px 14px;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.folder-card:hover {
  border-color: var(--folder-color, var(--color-primary));
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.folder-card-icon {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--folder-color, var(--color-primary));
  transition: transform .2s;
}

.folder-card:hover .folder-card-icon { transform: scale(1.08); }

.folder-card-name {
  font-weight: 700;
  font-size: .875rem;
  color: var(--text-primary);
  line-height: 1.3;
  word-break: break-word;
}

.folder-card-count {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-top: -4px;
}

/* Botão ⋮ posicionado no canto do folder-card */
.card-menu-btn {
  position: absolute;
  top: 6px; right: 6px;
  width: 28px; height: 28px;
  border: none;
  background: transparent;
  border-radius: var(--radius-base);
  color: var(--gray-400);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem;
  opacity: 0;
  transition: opacity .15s, background .15s, color .15s;
  z-index: 2;
  pointer-events: none;
}
.folder-card:hover .card-menu-btn,
.card-menu-btn:focus-visible,
.card-menu-btn.active { opacity: 1; pointer-events: auto; }
.card-menu-btn:hover,
.card-menu-btn.active { background: var(--gray-100); color: var(--text-primary); }

/* Dropdown de ações (appended ao body — sem risco de overflow:hidden) */
.card-actions-menu {
  position: absolute;
  min-width: 148px;
  background: var(--color-white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  overflow: hidden;
}
.card-actions-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  font-size: .8125rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-primary);
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  text-align: left;
  transition: background .12s;
}
.card-actions-item i { width: 14px; text-align: center; font-size: .75rem; }
.card-actions-item:hover { background: var(--gray-100); }
.card-actions-item.danger { color: var(--color-danger); }
.card-actions-item.danger:hover { background: var(--color-danger-surface); }

/* Botão inline de ação nos material-cards (footer) */
.folder-action-btn {
  width: 26px; height: 26px;
  border: none;
  background: transparent;
  border-radius: var(--radius-base);
  color: var(--gray-400);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem;
  transition: background .15s, color .15s;
}
.folder-action-btn:hover { background: var(--gray-100); color: var(--text-primary); }

/* Section separator between folders and files */
.materials-section-label {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 20px 0 10px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.breadcrumb-item { color: var(--text-secondary); }
.breadcrumb-link {
  color: var(--color-primary);
  cursor: pointer;
  font-weight: 500;
  background: none; border: none; padding: 0;
  font-size: inherit;
}
.breadcrumb-link:hover { text-decoration: underline; }
.breadcrumb-sep  { color: var(--gray-300); }
.breadcrumb-current { color: var(--text-primary); font-weight: 600; }

.breadcrumb-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: transparent;
  color: var(--text-secondary);
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  margin-right: 6px;
}
.breadcrumb-back:hover {
  background: var(--gray-100);
  color: var(--text-primary);
  border-color: var(--gray-300);
}

/* Sistema genérico de abas (Finanças, Progresso, Disponibilidade…) */
.app-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--gray-200);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.app-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s, background .15s;
  border-radius: var(--radius-base) var(--radius-base) 0 0;
  white-space: nowrap;
}
.app-tab:hover { color: var(--text-primary); background: var(--gray-50); }
.app-tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}
.app-tab--active:hover { background: transparent; }

/* Color swatches in folder modal */
.color-swatches { display: flex; gap: 8px; flex-wrap: wrap; padding: 4px 0; }

.color-swatch {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s, outline .1s;
  outline: 3px solid transparent;
  outline-offset: 2px;
}

.color-swatch:hover { transform: scale(1.15); }
.color-swatch.active { outline-color: currentColor; }

/* Folder tag on material card (shown in search results) */
.material-folder-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 7px;
  border-radius: var(--radius-full);
  font-size: .7rem;
  font-weight: 600;
  background: var(--folder-tag-bg, var(--color-primary-surface));
  color: var(--folder-tag-color, var(--color-primary));
  margin-bottom: 4px;
}

/* File drop area */
.file-drop-area {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.file-drop-area:hover,
.file-drop-area.drag-over {
  border-color: var(--color-primary-lighter);
  background: var(--color-primary-surface);
}

.file-drop-icon { font-size: 2rem; color: var(--gray-400); margin-bottom: 4px; }
.file-drop-text { font-size: .9rem; color: var(--text-secondary); margin: 0; }
.file-drop-link { color: var(--color-primary); font-weight: 600; }
.file-drop-hint { font-size: .75rem; color: var(--text-muted); margin: 0; }

.file-drop-selected {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--color-success);
  font-weight: 500;
}

/* Upload progress */
.upload-progress-bar {
  height: 6px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 6px;
}

.upload-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width .3s ease;
  width: 0%;
}

.upload-progress-label {
  font-size: .8rem;
  color: var(--text-secondary);
  margin: 0;
  text-align: center;
}

/* --------------------------------------------------------------------------
   15. CLASS CARD
   -------------------------------------------------------------------------- */
.class-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
}

.class-card:hover {
  border-color: var(--color-primary-lighter);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.class-card-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  padding: 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.class-card-icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--color-white);
  flex-shrink: 0;
}

.class-card-titles { flex: 1; min-width: 0; }
.class-card-name { font-size: 1rem; font-weight: 700; color: var(--color-white); line-height: 1.3; }
.class-card-level { font-size: .8125rem; color: rgba(255,255,255,.7); margin-top: 3px; }

.class-card-body { padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }

.class-card-schedule {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: .8125rem;
  color: var(--text-secondary);
}
.class-card-schedule i { color: var(--gray-400); width: 14px; text-align: center; }

.class-card-students {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--gray-100);
}

.student-avatars { display: flex; }
.student-avatar-sm {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  background: var(--color-primary-surface);
  border: 2px solid var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .65rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-left: -6px;
  flex-shrink: 0;
}
.student-avatar-sm:first-child { margin-left: 0; }
.student-avatar-sm--more { background: var(--gray-200); color: var(--gray-600); }

.student-count-text { font-size: .8125rem; color: var(--text-secondary); }

/* --------------------------------------------------------------------------
   14. STAT CARDS
   -------------------------------------------------------------------------- */
.stats-section { animation: slideUp .4s both; }
.stats-section--sm .stats-grid { margin-bottom: 0; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.stats-grid--4 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.stats-grid--finance { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.stat-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  /* Quando usado como <a> */
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--gray-300); }

/* Ícone do card (sem círculo, cor única da marca) */
.stat-card-icon {
  flex-shrink: 0;
  font-size: 1.875rem;
  color: var(--color-primary);
  opacity: .75;
  width: 36px;
  height: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
  margin-right: 8px;
}
.stat-card:hover .stat-card-icon { opacity: 1; }

/* Seta inline no canto direito do card-link */
.stat-card-arrow {
  flex-shrink: 0;
  font-size: .8rem;
  color: var(--gray-400);
  margin-left: auto;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.stat-card:hover .stat-card-arrow {
  color: var(--color-primary);
  transform: translateX(3px);
}

.stat-card--sm { padding: 16px; }

.stat-card--primary .stat-icon { background: var(--color-primary-surface); color: var(--color-primary); }
.stat-card--primary::after   { background: var(--color-primary); }

.stat-card--secondary .stat-icon { background: var(--color-secondary-surface); color: var(--color-secondary); }
.stat-card--secondary::after  { background: var(--color-secondary); }

.stat-card--success .stat-icon { background: var(--color-success-surface); color: var(--color-success); }
.stat-card--success::after   { background: var(--color-success); }

.stat-card--finance .stat-icon { background: #e0fdf4; color: #0d9488; }
.stat-card--finance-main .stat-icon { background: var(--color-primary-surface); color: var(--color-primary); }

.stat-card--paid .stat-icon    { background: var(--color-success-surface); color: var(--color-success); }
.stat-card--pending .stat-icon { background: var(--color-warning-surface); color: var(--color-warning); }
.stat-card--overdue .stat-icon { background: var(--color-danger-surface); color: var(--color-danger); }

.stat-card--danger .stat-icon { background: var(--color-danger-surface); color: var(--color-danger); }
.stat-card--info .stat-icon   { background: var(--color-info-surface); color: var(--color-info); }

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.stat-card--sm .stat-icon { width: 40px; height: 40px; font-size: 1.1rem; border-radius: var(--radius-md); }

.stat-body { flex: 1; min-width: 0; }
.stat-label { display: block; font-size: .8125rem; color: var(--text-secondary); font-weight: 500; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 800; color: var(--text-primary); letter-spacing: -.02em; line-height: 1.2; margin-top: 2px; }
.stat-value--lg { font-size: 1.75rem; }

.stat-trend {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.stat-link {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  font-size: .8rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.stat-link:hover { background: var(--color-primary); color: var(--color-white); }

/* --------------------------------------------------------------------------
   15. SECTION HEADERS
   -------------------------------------------------------------------------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title-icon { color: var(--color-primary); font-size: .9rem; }

/* --------------------------------------------------------------------------
   16. CALENDAR
   -------------------------------------------------------------------------- */
.calendar-section { animation: slideUp .5s .1s both; }

.calendar-view-controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
}

.view-btn {
  padding: 7px 16px;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-right: 1px solid var(--gray-200);
}
.view-btn:last-child { border-right: none; }
.view-btn:hover { background: var(--gray-50); color: var(--gray-900); }
.view-btn--active { background: var(--color-primary); color: var(--color-white); }

.calendar-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-top: 12px;
  overflow: hidden;
}

/* Reserva espaço antes do FullCalendar inicializar (evita CLS) */
#calendar { min-height: 480px; }

/* FullCalendar overrides */
.fc { font-family: 'Inter', sans-serif !important; }
.fc-toolbar-title { font-size: 1rem !important; font-weight: 700 !important; color: var(--text-primary) !important; }
.fc-button { background: var(--color-primary) !important; border-color: var(--color-primary) !important; font-size: .8125rem !important; font-weight: 600 !important; border-radius: var(--radius-md) !important; padding: 6px 12px !important; margin: 0 6px !important;}
.fc-button:hover { background: var(--color-primary-hover) !important; border-color: var(--color-primary-hover) !important; }
.fc-button-active { background: var(--color-primary-active) !important; border-color: var(--color-primary-active) !important; }
.fc-daygrid-day-number, .fc-col-header-cell-cushion { color: var(--text-primary) !important; font-size: .8125rem !important; }
.fc-event { border-radius: var(--radius-sm) !important; border: none !important; font-size: .75rem !important; font-weight: 500 !important; }
.fc-day-today { background: var(--color-primary-surface) !important; }
.fc-day-today .fc-daygrid-day-number { color: var(--color-primary) !important; font-weight: 700 !important; }

/* --------------------------------------------------------------------------
   17. UPCOMING CLASSES (Dashboard)
   -------------------------------------------------------------------------- */
.upcoming-section { animation: slideUp .5s .2s both; }

.upcoming-list { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.upcoming-list > .empty-state {
  width: 200%;
  min-height: 180px;
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.upcoming-item {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition-fast);
}
.upcoming-item:hover { border-color: var(--color-primary-lighter); box-shadow: var(--shadow-sm); }

.upcoming-time {
  min-width: 70px;
  font-size: .8125rem;
  font-weight: 700;
  color: var(--color-primary);
}

.upcoming-info { flex: 1; min-width: 0; }
.upcoming-name { font-weight: 600; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upcoming-class { font-size: .8125rem; color: var(--text-secondary); }

.upcoming-badge {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 600;
  background: var(--gray-100);
  color: var(--gray-600);
}

/* --------------------------------------------------------------------------
   18. MODALS
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

/* Large overlay: centralizado com padding — o modal interno cuida do próprio scroll */
.modal-overlay--large { align-items: center; padding: 32px 24px; }

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 540px;
  box-shadow: var(--shadow-2xl);
  display: flex;
  flex-direction: column;
  /* max-height contém o modal na viewport; min-height:0 permite que o body flex encolha */
  max-height: 90vh;
  min-height: 0;
  transform: scale(.94) translateY(16px);
  transition: transform var(--transition-spring);
  overflow: hidden;
}

.modal-overlay.is-open .modal {
  transform: scale(1) translateY(0);
}

.modal--large   { max-width: 760px; }
.modal--confirm { max-width: 420px; }

/* Progress student modal — guias + paginação.
   10 itens/página cabem sem rolagem; body usa flex-column com gap compacto. */
#studentProgressModal .modal-body {
  padding: 14px 18px;
  gap: 10px;
  overflow-y: visible;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--gray-100);
  flex-shrink: 0;
}

.modal-title-group { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 0; }

.modal-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-title--danger { color: var(--color-danger); display: flex; align-items: center; gap: 8px; }

.modal-subtitle { font-size: .8125rem; color: var(--text-secondary); display: block; margin-top: 2px; }

.modal-header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: all var(--transition-fast);
}
.modal-close:hover { background: var(--gray-100); color: var(--gray-700); }

.modal-body {
  flex: 1;
  min-height: 0;        /* essencial: permite que overflow-y: auto funcione dentro de flex */
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-body--tabs { padding-top: 0; }
.modal-body p { font-size: .9375rem; color: var(--text-secondary); }

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  flex-shrink: 0;
  background: var(--gray-50);
}

/* Large student/class avatars in modal */
.student-avatar-lg,
.class-avatar-lg {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-xl);
  background: var(--color-primary-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   19. TABS
   -------------------------------------------------------------------------- */
.tabs {
  display: flex;
  gap: 0;
  padding: 0 24px;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
  flex-shrink: 0;
}

.tab {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 14px 18px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--gray-500);
  border-bottom: 2.5px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  background: none;
}

.tab:hover { color: var(--color-primary); }
.tab--active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab i { font-size: .875rem; }

.tab-panel { display: flex; flex-direction: column; gap: 20px; }
.tab-panel[hidden] { display: none; }

.tab-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   20. INFO GRID (Student detail)
   -------------------------------------------------------------------------- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.info-item--full { grid-column: 1 / -1; }

.info-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.info-label i { color: var(--gray-400); width: 14px; text-align: center; }

.info-value {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text-primary);
}

.info-value--text { line-height: 1.6; font-weight: 400; color: var(--text-secondary); }

/* --------------------------------------------------------------------------
   21. ATTENDANCE STATS (inside tabs)
   -------------------------------------------------------------------------- */
.attendance-summary,
.finance-summary {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}

.att-stat, .fin-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 20px;
  border-radius: var(--radius-lg);
  min-width: 80px;
}

.att-stat--present  { background: var(--color-success-surface); }
.att-stat--absent   { background: var(--color-danger-surface); }
.att-stat--rate     { background: var(--color-info-surface); }
.fin-stat--paid     { background: var(--color-success-surface); }
.fin-stat--pending  { background: var(--color-warning-surface); }

.att-stat-value, .fin-stat-value { font-size: 1.25rem; font-weight: 800; color: var(--text-primary);}
.att-stat-label, .fin-stat-label { font-size: .75rem; color: var(--text-secondary); font-weight: 500; margin-top: 2px; }

.att-stat--present .att-stat-value  { color: var(--color-success); }
.att-stat--absent  .att-stat-value  { color: var(--color-danger); }
.att-stat--rate    .att-stat-value  { color: var(--color-info); }
.fin-stat--paid    .fin-stat-value  { color: var(--color-success); }
.fin-stat--pending .fin-stat-value  { color: var(--color-warning); }

/* --------------------------------------------------------------------------
   22. TABLES
   -------------------------------------------------------------------------- */
.table-section { animation: slideUp .5s .15s both; }

.table-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
}

.table-card-title { font-size: .9375rem; font-weight: 700; color: var(--text-primary); }
.table-actions { display: flex; gap: 8px; }

.table-wrapper { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.data-table thead { background: var(--gray-50); }

.data-table th {
  padding: 11px 16px;
  text-align: left;
  font-size: .75rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .05em;
  white-space: nowrap;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background var(--transition-fast); }
.data-table tbody tr:hover td { background: var(--gray-50); }

.sortable {
  cursor: pointer;
  user-select: none;
}

.sortable:hover { color: var(--color-primary); }
.sort-icon { font-size: .7rem; margin-left: 4px; opacity: .5; }
.sort-icon--asc, .sort-icon--desc { opacity: 1; color: var(--color-primary); }

.col-actions { width: 100px; text-align: right; }

.table-row-actions { display: flex; align-items: center; justify-content: flex-end; gap: 4px; }

.action-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  transition: all var(--transition-fast);
  color: var(--gray-400);
}
.action-btn--edit:hover  { background: var(--color-primary-surface); color: var(--color-primary); }
.action-btn--delete:hover { background: var(--color-danger-surface); color: var(--color-danger); }

.empty-row td { padding: 32px 16px; }

/* --------------------------------------------------------------------------
   23. STATUS BADGES
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge--present   { background: var(--color-success-surface); color: var(--color-success); }
.badge--absent    { background: var(--color-danger-surface);  color: var(--color-danger); }
.badge--justified { background: var(--color-warning-surface); color: var(--color-warning); }
.badge--paid      { background: var(--color-success-surface); color: var(--color-success); }
.badge--pending   { background: var(--color-warning-surface); color: var(--color-warning); }
.badge--overdue   { background: var(--color-danger-surface);  color: var(--color-danger); }

.level-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  background: var(--gray-100);
  color: var(--gray-600);
}

.level-badge--beginner,
.level-badge--elementary,
.level-badge--intermediate,
.level-badge--upper-intermediate,
.level-badge--advanced,
.level-badge--proficient { background: var(--gray-100); color: var(--gray-600); }

/* --------------------------------------------------------------------------
   24. PAGINATION
   -------------------------------------------------------------------------- */
.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--gray-100);
  flex-wrap: wrap;
  gap: 10px;
}

.pagination-info { font-size: .8125rem; color: var(--text-secondary); }

.pagination-controls { display: flex; align-items: center; gap: 4px; }

.pagination-btn {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  color: var(--gray-500);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.pagination-btn:hover:not(:disabled) { border-color: var(--color-primary); color: var(--color-primary); }
.pagination-btn:disabled { opacity: .4; cursor: not-allowed; }

.pagination-pages { display: flex; gap: 4px; }

.page-btn {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.page-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-btn--active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }

/* --------------------------------------------------------------------------
   25. EMPTY STATES
   -------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  gap: 12px;
  animation: fadeIn var(--transition-slow) both;
}

.empty-state--sm { padding: 24px 16px; gap: 8px; }

.empty-state-icon {
  font-size: 3rem;
  color: var(--gray-300);
}

.empty-state--sm .empty-state-icon,
.empty-state--sm i { font-size: 1.75rem; color: var(--gray-300); }

.empty-state-title {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--gray-500);
}

.empty-state-desc { font-size: .875rem; color: var(--gray-400); }

/* --------------------------------------------------------------------------
   26. FINANCE — CHARTS
   -------------------------------------------------------------------------- */
/* Grid unificado: stat cards + gráficos compartilham as mesmas 4 colunas */
.finance-summary-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  animation: slideUp .4s both;
  margin-bottom: 24px;
}

/* Gráfico de barras ocupa colunas 1–3 (alinha com Receita Total, Recebido e Pendente) */
.chart-card--bar   { grid-column: 1 / 4; }

/* Gráfico de pizza ocupa coluna 4 (alinha com Em Atraso) */
.chart-card--doughnut { grid-column: 4; }

.chart-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.chart-title {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.chart-title i { color: var(--color-primary); }

.chart-wrapper {
  position: relative;
  width: 100%;
}

.chart-card--bar .chart-wrapper { height: 260px; }
.chart-card--doughnut .chart-wrapper { height: 200px; }

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: .8125rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-label { flex: 1; color: var(--text-secondary); }
.legend-value { font-weight: 700; color: var(--text-primary); }

/* --------------------------------------------------------------------------
   27. FINANCE — PAYMENT CARDS
   -------------------------------------------------------------------------- */
.payments-section { animation: slideUp .5s .15s both; }
#teacherFinanceView .payments-section .section-header { margin-top: 24px; margin-bottom: 8px;}

/* Section header inside payments has no bottom margin — toolbar handles spacing */
.payments-section .section-header { margin-bottom: 0; }

.payments-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
  margin-bottom: 16px;
}

.payment-filters { display: flex; align-items: center; gap: 10px; flex-wrap: nowrap; }
.payment-filters .search-wrapper { flex: 1; min-width: 0; }
.payment-filters .form-select { flex: 0 0 auto; width: auto; min-width: 160px; }

.payment-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.payment-card {
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.payment-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary-lighter); }

.payment-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.payment-card-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.payment-card-name { font-weight: 700; font-size: .9rem; }
.payment-card-fee  { font-size: .8125rem; color: var(--text-secondary); }

.payment-card-body { padding: 12px 16px; display: flex; flex-direction: column; gap: 6px; }

.payment-record {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: var(--gray-50);
  font-size: .8125rem;
}

.payment-record-ref { font-weight: 600; color: var(--text-primary); }
.payment-record-amount { font-weight: 700; }
.payment-record-actions { display: flex; gap: 2px; }

.payment-card-add {
  width: 100%;
  padding: 10px;
  font-size: .8125rem;
  color: var(--color-primary);
  font-weight: 600;
  border-top: 1px dashed var(--gray-200);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.payment-card-add:hover { background: var(--color-primary-surface); }

/* Table view toggle */
.table-view-toggle { display: flex; border: 1.5px solid var(--gray-200); border-radius: var(--radius-md); overflow: hidden; }
.view-toggle-btn {
  width: 45px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .875rem;
  color: var(--gray-500);
  background: var(--color-white);
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  border-right: 1px solid var(--gray-200);
}
.view-toggle-btn:last-child { border-right: none; }
.view-toggle-btn--active { background: var(--color-primary); color: var(--color-white); }
.view-toggle-btn:not(.view-toggle-btn--active):hover { background: var(--gray-100); }

/* Period selector */
.period-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 4px 6px;
  background: var(--color-white);
}
.period-label { font-size: .875rem; font-weight: 600; color: var(--text-primary); min-width: 120px; text-align: center; }

/* Payment method */
.payment-method-group { display: flex; gap: 8px; flex-wrap: wrap; justify-content: space-between; }
.method-label { cursor: pointer; }
.method-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: .8125rem;
  font-weight: 600;
  color: var(--gray-600);
  transition: all var(--transition-fast);
}
.method-label:has(.radio-input:checked) .method-btn {
  background: var(--color-primary-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.method-btn:hover { border-color: var(--color-primary-lighter); }

/* --------------------------------------------------------------------------
   28. ATTENDANCE — INLINE STUDENT LIST
   -------------------------------------------------------------------------- */
.att-students-selector {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: 320px;
  overflow-y: auto;
}

.att-student-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition-fast);
}
.att-student-row:last-child { border-bottom: none; }
.att-student-row:hover { background: var(--gray-50); }

.att-student-name { flex: 1; font-weight: 500; font-size: .9rem; }

.att-status-toggle {
  display: flex;
  gap: 4px;
}

.att-status-btn {
  padding: 5px 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: transparent;
  display: flex;
  align-items: center;
  gap: 4px;
}

.att-status-btn--present.is-active  { background: var(--color-success-surface); border-color: var(--color-success); color: var(--color-success); }
.att-status-btn--absent.is-active   { background: var(--color-danger-surface);  border-color: var(--color-danger);  color: var(--color-danger); }
.att-status-btn--justified.is-active { background: var(--color-warning-surface); border-color: var(--color-warning); color: var(--color-warning); }
.att-status-btn:hover { background: var(--gray-100); }

.att-quick-actions { display: flex; gap: 10px; }

/* Name + level badge wrapper inside a student row */
.att-student-name-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.att-student-name-wrap .att-student-name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Remove button on individual-mode rows */
.att-remove-student {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--gray-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.att-remove-student:hover { background: var(--color-danger-surface); color: var(--color-danger); }

/* Individual mode: allow dropdown to overflow the container */
.att-students-selector--individual { overflow: visible; }

/* ---- Individual-mode search area ---- */
.att-student-search-wrap {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Each option block (busca / lista) */
.att-search-option {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.att-search-option-label {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 5px;
}

/* "ou" divider */
.att-search-or {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-400);
  font-size: .75rem;
  font-weight: 600;
}
.att-search-or::before,
.att-search-or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-200);
}

/* Row with select + add button */
.att-select-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* Search input (full-width inside its option block) */
.att-search-input { width: 100%; }

/* Dropdown list */
.att-student-dropdown {
  position: absolute;
  top: calc(100% - 12px);
  left: 16px;
  right: 16px;
  z-index: 200;
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: 0 6px 16px rgba(0,0,0,.10);
  overflow: hidden;
}

.att-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--gray-100);
}
.att-dropdown-item:last-child { border-bottom: none; }
.att-dropdown-item:hover { background: var(--color-primary-surface); }

.att-dropdown-name { flex: 1; font-size: .9rem; font-weight: 500; }

.att-dropdown-empty {
  padding: 12px 14px;
  font-size: .875rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Empty-state inside #attSelectedStudents */
.att-individual-empty {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  color: var(--gray-400);
  font-size: .875rem;
}
.att-individual-empty i { font-size: 1.1rem; flex-shrink: 0; }

/* --------------------------------------------------------------------------
   29. CLASS DETAIL — SCHEDULE CHIPS & STUDENT SELECTOR
   -------------------------------------------------------------------------- */
.detail-section { margin-bottom: 20px; }
.detail-section:last-child { margin-bottom: 0; }
.detail-section-header { display: flex; align-items: center; justify-content: space-between; }
.detail-section-title { font-size: .875rem; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .05em; display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.detail-text { font-size: .9375rem; color: var(--text-secondary); line-height: 1.6; }

.schedule-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.schedule-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  background: var(--color-primary-surface);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: .8125rem;
  font-weight: 600;
}

.class-students-list { display: flex; flex-direction: column; gap: 6px; }

.class-student-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  font-size: .875rem;
  transition: background var(--transition-fast);
}
.class-student-item:hover { background: var(--color-primary-surface); }
.class-student-item-avatar {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-full);
  background: var(--color-primary-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}
.class-student-item-name { flex: 1; font-weight: 600; }
.class-student-item-level { font-size: .75rem; color: var(--text-secondary); }

/* Student selector in class form */
.student-selector { border: 1.5px solid var(--gray-200); border-radius: var(--radius-lg); overflow: hidden; }

.student-selector-search {
  position: relative;
  padding: 10px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.student-selector-search .search-input { background: var(--color-white); }

.student-selector-list {
  max-height: 200px;
  overflow-y: auto;
}

.selector-student-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--gray-50);
}
.selector-student-item:last-child { border-bottom: none; }
.selector-student-item:hover { background: var(--color-primary-surface); }

.selector-student-item-info { flex: 1; min-width: 0; }
.selector-student-item-name { font-size: .875rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.selector-student-item-level { font-size: .75rem; color: var(--text-secondary); }

.selected-students {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  min-height: 32px;
}

.selected-student-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--color-primary-surface);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: .8125rem;
  font-weight: 600;
}

.selected-student-chip button {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(3,45,111,.15);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .6rem;
  transition: background var(--transition-fast);
}
.selected-student-chip button:hover { background: var(--color-secondary); color: var(--color-white); }

/* Schedule entry in class form */
.schedule-entry { position: relative; padding: 14px; background: var(--gray-50); border-radius: var(--radius-md); }
.schedule-entry + .schedule-entry { margin-top: 10px; }

.btn--add-schedule {
  width: 100%;
  justify-content: center;
  border-style: dashed;
  margin-top: 8px;
  color: var(--color-primary);
  border-color: var(--color-primary-lighter);
}
.btn--add-schedule:hover { background: var(--color-primary-surface); border-style: solid; }

/* --------------------------------------------------------------------------
   30. TOAST NOTIFICATIONS
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--gray-900);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  pointer-events: all;
  animation: slideInRight .3s var(--transition-spring) both;
  max-width: 340px;
}

.toast--success { background: var(--color-success); }
.toast--error   { background: var(--color-secondary); }
.toast--warning { background: var(--color-warning); }

.toast-icon { font-size: 1rem; flex-shrink: 0; }
.toast-message { flex: 1; }
.toast-close { opacity: .7; cursor: pointer; transition: opacity var(--transition-fast); font-size: .8rem; }
.toast-close:hover { opacity: 1; }

/* --------------------------------------------------------------------------
   31. SKELETON LOADING
   -------------------------------------------------------------------------- */
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   32. UTILITIES
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.text-muted    { color: var(--text-secondary); }
.text-small    { font-size: .8125rem; }

.d-none  { display: none !important; }
.d-flex  { display: flex; }
.d-grid  { display: grid; }

.gap-sm  { gap: 8px; }
.gap-md  { gap: 16px; }
.gap-lg  { gap: 24px; }

.mt-auto { margin-top: auto; }
.ml-auto { margin-left: auto; }

/* --------------------------------------------------------------------------
   33. LOGO — sidebar e login
   -------------------------------------------------------------------------- */
.sidebar-logo-img {
  display: block;
  height: 80px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
}

.login-logo {
  width: auto;
  height: auto;
  background: transparent;
  border: none;
  box-shadow: none;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-logo-img {
  display: block;
  height: 80px;
  width: auto;
  max-width: 260px;
  object-fit: contain;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,.25));
}

/* --------------------------------------------------------------------------
   34. USER-INFO COMO BOTÃO (perfil)
   -------------------------------------------------------------------------- */
.user-info {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  padding: 6px 8px;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
  position: relative;
}

.user-info:hover {
  background: rgba(255,255,255,.1);
}

.user-info:hover .user-edit-icon {
  opacity: 1;
  transform: translateX(0);
}

.user-edit-icon {
  font-size: .75rem;
  color: rgba(255,255,255,.5);
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

/* Avatar com iniciais */
.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,.2);
}

.user-avatar-initials {
  font-size: .8125rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  letter-spacing: .02em;
}

/* --------------------------------------------------------------------------
   35. MODAL DE PERFIL
   -------------------------------------------------------------------------- */
.modal--profile {
  max-width: 500px;
}

.profile-modal-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-bottom: none;
  padding: 24px;
}

.profile-header-content { flex: 1; }

.profile-avatar-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
}

.profile-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(255,255,255,.25), rgba(255,255,255,.1));
  border: 2.5px solid rgba(255,255,255,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.profile-avatar--lg {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border: 3px solid var(--color-primary-lighter);
  margin: 0 auto;
}

.profile-avatar span {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.profile-avatar--lg span {
  font-size: 1.75rem;
}

.profile-header-info {
  min-width: 0;
}

.profile-header-info .modal-title {
  color: var(--color-white) !important;
  font-size: 1.0625rem;
}

.profile-header-role {
  font-size: .8125rem;
  color: rgba(255,255,255,.65);
  display: block;
  margin-top: 2px;
}

.profile-security-notice {
  margin-top: 16px;
}

.modal-close--light {
  color: rgba(255,255,255,.7) !important;
}
.modal-close--light:hover {
  background: rgba(255,255,255,.15) !important;
  color: var(--color-white) !important;
}

/* Conteúdo do modal de perfil */
.profile-avatar-edit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 8px 0 16px;
}

.profile-avatar-hint {
  font-size: .8125rem;
  color: var(--text-secondary);
  text-align: center;
}

.profile-security-notice {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  padding: 12px 14px;
  background: var(--color-info-surface);
  color: var(--color-info);
  border-radius: var(--radius-md);
  font-size: .875rem;
  line-height: 1.5;
  border: 1px solid rgba(3,105,161,.15);
}

.profile-security-notice i { margin-top: 2px; flex-shrink: 0; }

.form-divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 4px 0;
}

.form-section-label {
  font-size: .8125rem;
  font-weight: 700;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: -4px;
}

.form-hint {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-top: -2px;
}

.form-hint-inline {
  font-size: .75rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   36. SCROLL INDICATOR para tabelas
   -------------------------------------------------------------------------- */
.table-wrapper {
  position: relative;
}

.table-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 32px;
  background: linear-gradient(to left, rgba(255,255,255,.9), transparent);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.table-wrapper.has-scroll::after {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   37. FOTO DE PERFIL
   -------------------------------------------------------------------------- */
.profile-avatar-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
  display: none;
}

.profile-avatar {
  position: relative;
  overflow: hidden;
}

.profile-avatar-camera {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.55);
  border-radius: var(--radius-full);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  color: #fff;
  font-size: .6875rem;
  font-weight: 600;
}
.profile-avatar-camera i { font-size: 1.25rem; }

.profile-avatar--uploadable {
  cursor: pointer;
}
.profile-avatar--uploadable:hover .profile-avatar-camera,
.profile-avatar--uploadable:focus-visible .profile-avatar-camera {
  opacity: 1;
}

/* Ícone de câmera pequeno no header do modal */
.profile-avatar-camera-sm {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 18px;
  height: 18px;
  background: var(--color-primary-light);
  border: 2px solid #fff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .5rem;
  color: #fff;
}
.profile-avatar--clickable {
  cursor: pointer;
  position: relative;
  overflow: visible;
}

.profile-avatar-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   38. FORM-ROW SCHEDULE (com botão de remover)
   -------------------------------------------------------------------------- */
.form-row--schedule {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

/* Remove o ícone de relógio nativo do input type="time" no horário de aulas */
.sch-time::-webkit-calendar-picker-indicator { display: none; }
.sch-time::-webkit-inner-spin-button         { display: none; }

.btn-remove-schedule {
  height: var(--control-h);
  width: var(--control-h);
  background: none;
  border: 1.5px solid var(--color-danger-light, #fca5a5);
  border-radius: var(--radius-md);
  color: var(--color-danger, #dc2626);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.btn-remove-schedule:hover {
  background: var(--color-danger-surface, #fee2e2);
  border-color: var(--color-danger, #dc2626);
}

.lesson-content-cell {
  display: block;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: help;
}

/* --------------------------------------------------------------------------
   39. PAINEL DE CONFIGURAÇÕES
   -------------------------------------------------------------------------- */
.settings-panel {
  position: fixed;
  width: 260px;
  background: var(--color-white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: calc(var(--z-modal) + 20);
  opacity: 0;
  transform: translateY(6px) scale(.97);
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

.settings-panel--open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.settings-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  border-bottom: 1px solid var(--gray-100);
}

.settings-panel-title {
  font-size: .875rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.settings-panel-title i { color: var(--color-primary); font-size: .8rem; }

.settings-panel-close {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  font-size: .75rem;
  transition: all var(--transition-fast);
}
.settings-panel-close:hover { background: var(--gray-100); color: var(--text-primary); }

.settings-panel-body { padding: 8px 0 4px; }

.settings-section { padding: 4px 16px 8px; }

.settings-section-label {
  font-size: .6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--gray-100);
}
.settings-item:last-child { border-bottom: none; }

.settings-item-info { flex: 1; min-width: 0; }

.settings-item-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-primary);
}
.settings-item-label i { color: var(--color-primary); font-size: .8rem; width: 14px; text-align: center; }

.settings-item-desc {
  font-size: .75rem;
  color: var(--text-muted);
  margin-top: 2px;
  margin-left: 22px;
}

/* Toggle switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--gray-300);
  border-radius: var(--radius-full);
  transition: background var(--transition-base);
}
.toggle-slider::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: var(--color-white);
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 1px 4px rgba(0,0,0,.25);
}
.toggle-switch input:checked + .toggle-slider { background: var(--color-primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(18px); }