/* ==========================================================================
   Sistema de Gerenciamento Escolar - Estilos Globais e Componentes
   ========================================================================== */

:root {
  /* Cores Principais (Paleta Institucional Azul Escuro) */
  --primary-900: #0f172a;
  --primary-800: #1e293b;
  --primary-700: #334155;
  --primary-600: #475569;
  --primary-500: #2563eb;
  --primary-400: #3b82f6;
  --primary-100: #dbeafe;
  --primary-50:  #eff6ff;

  /* Neutros */
  --bg-main:     #f8fafc;
  --bg-surface:  #ffffff;
  --border-color:#e2e8f0;
  --text-main:   #0f172a;
  --text-muted:  #64748b;
  --text-light:  #94a3b8;

  /* Accents / Status */
  --color-success:     #16a34a;
  --color-success-bg:  #dcfce7;
  --color-danger:      #dc2626;
  --color-danger-bg:    #fee2e2;
  --color-warning:     #d97706;
  --color-warning-bg:   #fef3c7;
  --color-info:        #0284c7;
  --color-info-bg:      #e0f2fe;
  --color-purple:      #7c3aed;
  --color-purple-bg:    #f3e8ff;

  /* Fontes e Tamanhos */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */

  /* Espaçamentos (Múltiplos de 4px/8px) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* Bordas e Sombras */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Transição */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
  --sidebar-width: 260px;
}

/* Reset básico */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Layout Principal (App Shell)
   ========================================================================== */

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--primary-900);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition-normal);
}

.sidebar-brand {
  padding: var(--space-6) var(--space-4);
  font-size: var(--font-size-lg);
  font-weight: 700;
  border-bottom: 1px solid var(--primary-700);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-brand span {
  color: var(--primary-400);
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) 0;
  overflow-y: auto;
}

.sidebar-nav ul {
  list-style: none;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-6);
  color: #cbd5e1;
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  border-left: 4px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: #ffffff;
  background-color: var(--primary-800);
  border-left-color: var(--primary-400);
}

.sidebar-user {
  padding: var(--space-4);
  border-top: 1px solid var(--primary-700);
  background-color: rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-user-info {
  overflow: hidden;
}

.sidebar-user-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 0.75rem;
  color: var(--text-light);
  text-transform: uppercase;
}

/* Header Superior e Conteúdo */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--transition-normal);
}

.app-header {
  height: 64px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: 90;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary-800);
}

.header-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-900);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.content-area {
  padding: var(--space-6);
  flex: 1;
}

/* Page Header interno */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-900);
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 95;
}

/* ==========================================================================
   Componentes de UI Reutilizáveis
   ========================================================================== */

/* Cartões (Cards) */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-800);
}

/* Grid de Estatísticas / Dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--primary-50);
  color: var(--primary-500);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
}

.stat-info .stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-900);
  line-height: 1.2;
}

.stat-info .stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.5;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--primary-500);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-400);
}

.btn-secondary {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--primary-800);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-main);
  border-color: var(--primary-600);
}

.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
}

.btn-danger:hover:not(:disabled) {
  background-color: #b91c1c;
}

.btn-success {
  background-color: var(--color-success);
  color: #ffffff;
}

.btn-success:hover:not(:disabled) {
  background-color: #15803d;
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: 0.8125rem;
}

.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

/* Formulários */
.form-group {
  margin-bottom: var(--space-4);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--space-1);
}

label .required {
  color: var(--color-danger);
}

.form-control, .form-select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-family: inherit;
  color: var(--text-main);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-control:disabled, .form-select:disabled {
  background-color: var(--bg-main);
  cursor: not-allowed;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
}

.form-help {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.form-error {
  font-size: 0.75rem;
  color: var(--color-danger);
  margin-top: var(--space-1);
}

/* Tabelas */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-sm);
}

.table th {
  background-color: #f1f5f9;
  color: var(--primary-800);
  font-weight: 600;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
  white-space: nowrap;
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table tbody tr:hover {
  background-color: #f8fafc;
}

.table-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Badges / Tags de Status */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-3);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

/* Variações de Badge */
.badge-success, .badge-presente, .badge-nao_reivindicado, .badge-aprovado, .badge-letivo {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-danger, .badge-falta, .badge-reprovado, .badge-feriado {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.badge-warning, .badge-falta_justificada, .badge-aberta, .badge-recuperacao, .badge-recesso {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-info, .badge-devolvido, .badge-encerrada, .badge-evento {
  background-color: var(--color-info-bg);
  color: var(--color-info);
}

.badge-secondary {
  background-color: #f1f5f9;
  color: var(--primary-700);
}

/* Modais */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 550px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: translateY(-20px);
  transition: transform var(--transition-fast);
}

.modal-backdrop.show .modal-dialog {
  transform: translateY(0);
}

.modal-lg {
  max-width: 800px;
}

.modal-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--primary-900);
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  background-color: #f8fafc;
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* Toasts (Notificações) */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 380px;
  width: 100%;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--primary-900);
  color: #ffffff;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast-error {
  border-left: 4px solid var(--color-danger);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}

.toast-info {
  border-left: 4px solid var(--color-info);
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: 2px;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-size: 1.1rem;
}

@keyframes toastIn {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Estados de Loading e Vazio */
.loading-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid rgba(37, 99, 235, 0.2);
  border-radius: 50%;
  border-top-color: var(--primary-500);
  animation: spin 0.8s linear infinite;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  gap: var(--space-3);
  color: var(--text-muted);
}

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

.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-4);
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-2);
  opacity: 0.6;
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--space-1);
}

/* Barra de Progresso (Frequência / Porcentagem) */
.progress-bar-bg {
  width: 100%;
  height: 8px;
  background-color: #e2e8f0;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-success { background-color: var(--color-success); }
.progress-danger  { background-color: var(--color-danger); }
.progress-warning { background-color: var(--color-warning); }

/* ==========================================================================
   Componentes Específicos do Sistema Escolar
   ========================================================================== */

/* Botões de Chamada (P / F / FJ) */
.attendance-toggle {
  display: inline-flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.attendance-toggle button {
  padding: var(--space-1) var(--space-3);
  border: none;
  background-color: var(--bg-surface);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.attendance-toggle button + button {
  border-left: 1px solid var(--border-color);
}

.attendance-toggle button.active-p {
  background-color: var(--color-success);
  color: #ffffff;
}

.attendance-toggle button.active-f {
  background-color: var(--color-danger);
  color: #ffffff;
}

.attendance-toggle button.active-fj {
  background-color: var(--color-warning);
  color: #ffffff;
}

/* Grade Horária (Horários 5xN) */
.schedule-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: var(--space-2);
}

.schedule-table th {
  text-align: center;
  background-color: var(--primary-800);
  color: #ffffff;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
}

.schedule-table td {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  vertical-align: top;
  height: 80px;
  font-size: var(--font-size-sm);
}

.schedule-item {
  background-color: var(--primary-50);
  border-left: 3px solid var(--primary-500);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.schedule-item .subject {
  font-weight: 700;
  color: var(--primary-900);
}

.schedule-item .detail {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Calendário Escolar (Visão Mensal) */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
}

.calendar-day-header {
  text-align: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  padding: var(--space-2);
}

.calendar-day-cell {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  min-height: 90px;
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
}

.calendar-day-cell.other-month {
  opacity: 0.4;
  background-color: #f1f5f9;
}

.calendar-day-number {
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--space-1);
}

.calendar-event-tag {
  font-size: 0.7rem;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

/* Tela de Login & Recuperar Senha */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--primary-900);
  padding: var(--space-4);
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-900);
}

.auth-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--font-size-sm);
}

.auth-footer a {
  color: var(--primary-500);
  text-decoration: none;
  font-weight: 600;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Responsividade (Mobile & Tablet)
   ========================================================================== */

@media (max-width: 768px) {
  .app-sidebar {
    transform: translateX(-100%);
  }

  .app-sidebar.show {
    transform: translateX(0);
  }

  .sidebar-overlay.show {
    display: block;
  }

  .app-main {
    margin-left: 0;
  }

  .menu-toggle {
    display: block;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .schedule-table {
    display: block;
    overflow-x: auto;
  }
}