/**
 * ====================================================================
 * ESTILOS DO PAINEL ADMINISTRATIVO (ADMIN.CSS)
 * ====================================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1f2937;
  --bg-surface-glass: rgba(17, 24, 39, 0.85);
  --bg-hover: #374151;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #60a5fa;
  --primary-glow: rgba(37, 99, 235, 0.35);

  --success: #10b981;
  --success-hover: #059669;
  --success-glow: rgba(16, 185, 129, 0.35);

  --danger: #ef4444;
  --danger-hover: #dc2626;

  --warning: #f59e0b;
  --warning-hover: #d97706;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.15);

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;

  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

/* ------------------------------------------------------------------
   CABEÇALHO ADMIN
   ------------------------------------------------------------------ */
.admin-header {
  height: 70px;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.brand-info h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-badge-role {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(37, 99, 235, 0.15);
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid rgba(37, 99, 235, 0.3);
}

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

.btn-header-view {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-header-view:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.btn-logout-admin {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-logout-admin:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--danger);
}

/* ------------------------------------------------------------------
   CONTAINER PRINCIPAL
   ------------------------------------------------------------------ */
.admin-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
}

/* CARDS DE ESTATÍSTICAS */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}

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

.stat-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--primary-light); }
.stat-icon.green { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.stat-icon.purple { background: rgba(139, 92, 246, 0.15); color: #c084fc; }

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ------------------------------------------------------------------
   BARRA DE AÇÕES (TOOLBAR)
   ------------------------------------------------------------------ */
.toolbar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 280px;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 320px;
}

.search-box input {
  width: 100%;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px 10px 38px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: all 0.2s ease;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.select-module-filter {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* BOTÕES GERAIS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success);
  color: #fff;
  box-shadow: 0 4px 14px var(--success-glow);
}

.btn-success:hover {
  background: var(--success-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
  transform: translateY(-1px);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
}

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

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.btn-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-icon.delete:hover {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border-color: var(--danger);
}

.btn-icon.edit:hover {
  background: rgba(37, 99, 235, 0.2);
  color: var(--primary-light);
  border-color: var(--primary);
}

/* AVISO DE ALTERAÇÕES PENDENTES */
.unsaved-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--warning);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  animation: pulseWarning 2s infinite ease-in-out;
}

@keyframes pulseWarning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ------------------------------------------------------------------
   LISTA DE AULAS POR MÓDULOS
   ------------------------------------------------------------------ */
.modules-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.module-group {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.module-header {
  padding: 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.module-title-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.module-badge-icon {
  font-size: 1.1rem;
}

.module-title-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.module-lessons-count {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-surface-elevated);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.lessons-table {
  width: 100%;
  border-collapse: collapse;
}

.lessons-table th {
  text-align: left;
  padding: 10px 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
}

.lessons-table td {
  padding: 14px 1.25rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  font-size: 0.9rem;
}

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

.lessons-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* COLUNAS ESPECÍFICAS */
.col-order {
  width: 90px;
}

.col-order-buttons {
  display: flex;
  gap: 4px;
}

.btn-order {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.15s;
}

.btn-order:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.btn-order:not(:disabled):hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.col-id {
  width: 50px;
  font-weight: 700;
  color: var(--text-muted);
}

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

.lesson-title-text {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.lesson-desc-snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 450px;
}

.badge-duration {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-main);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.badge-video {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-family: monospace;
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(37, 99, 235, 0.2);
  cursor: pointer;
  transition: all 0.2s;
}

.badge-video:hover {
  background: rgba(37, 99, 235, 0.2);
  border-color: var(--primary);
}

.badge-attachments {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg-surface-elevated);
  padding: 3px 8px;
  border-radius: 12px;
}

.col-actions {
  text-align: right;
  white-space: nowrap;
}

.action-buttons-wrapper {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

/* LISTA VAZIA */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-surface);
  border: 1px dashed var(--border-light);
  border-radius: var(--radius-lg);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  max-width: 450px;
  margin-left: auto;
  margin-right: auto;
}

/* ------------------------------------------------------------------
   MODAIS (ADMIN)
   ------------------------------------------------------------------ */
.admin-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.admin-modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.admin-modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  transform: translateY(20px);
  transition: transform 0.25s ease;
  overflow: hidden;
}

.admin-modal-backdrop.active .admin-modal-card {
  transform: translateY(0);
}

.modal-header {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: color 0.2s;
}

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

.modal-body {
  padding: 1.75rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* FORMULÁRIO */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-group .form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

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

.form-control {
  width: 100%;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: all 0.2s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-control {
  min-height: 90px;
  resize: vertical;
}

.input-with-button {
  display: flex;
  gap: 8px;
}

/* GERENCIADOR DE ANEXOS */
.attachments-builder {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-top: 0.5rem;
}

.attachments-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

.attachment-row {
  display: grid;
  grid-template-columns: 1.5fr 2fr 0.8fr auto;
  gap: 8px;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.attachment-row input {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  color: var(--text-primary);
  font-size: 0.82rem;
  font-family: inherit;
  outline: none;
}

.attachment-row input:focus {
  border-color: var(--primary);
}

.btn-add-attachment {
  width: 100%;
  background: var(--bg-surface-elevated);
  border: 1px dashed var(--border-light);
  color: var(--text-secondary);
  padding: 8px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-add-attachment:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--primary);
}

/* MODAL DE LOGIN ADMIN */
.login-card {
  max-width: 420px;
  margin: auto;
  text-align: center;
}

.login-card .modal-body {
  padding: 2.5rem 2rem;
}

.login-icon-box {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto 1.5rem auto;
}

.login-error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 10px;
  display: none;
}

/* PREVIEW DO VÍDEO */
.video-preview-box {
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
}

.video-preview-box video {
  width: 100%;
  max-height: 400px;
  display: block;
}

/* TOAST */
.admin-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 200;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.admin-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.admin-toast.success {
  border-color: var(--success);
  background: #064e3b;
}

.admin-toast.error {
  border-color: var(--danger);
  background: #7f1d1d;
}

/* RESPONSIVIDADE */
@media (max-width: 768px) {
  .admin-header {
    padding: 0 1rem;
  }
  .admin-container {
    padding: 1rem;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
  }
  .attachment-row {
    grid-template-columns: 1fr;
  }
  .toolbar-card {
    flex-direction: column;
    align-items: stretch;
  }
  .toolbar-left {
    min-width: 100%;
    flex-direction: column;
  }
  .search-box {
    max-width: 100%;
  }
}