/* ===== VARIÁVEIS CSS ===== */
:root {
  /* Cores Primárias */
  --primary: #0d6efd;
  --primary-dark: #0a58ca;
  --secondary: #6c757d;
  --success: #198754;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #0dcaf0;
  --light: #f8f9fa;
  --dark: #212529;
  
  /* Tema Claro */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --border-color: #dee2e6;
  --shadow: rgba(0, 0, 0, 0.1);
  
  /* Sidebar */
  --sidebar-bg: #ffffff;
  --sidebar-border: #dee2e6;
  --sidebar-text: #495057;
  --sidebar-hover: #f8f9fa;
  --sidebar-active: #0d6efd;
  
  /* Header */
  --header-bg: #ffffff;
  --header-border: #dee2e6;
  
  /* Cards */
  --card-bg: #ffffff;
  --card-border: #dee2e6;
  --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  
  /* Inputs */
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --input-focus: #86b7fe;
  
  /* Transições */
  --transition: all 0.3s ease;
}

/* Tema Escuro */
[data-theme="dark"] {
  --bg-primary: #1a1d23;
  --bg-secondary: #212529;
  --bg-tertiary: #343a40;
  --text-primary: #ffffff;
  --text-secondary: #adb5bd;
  --text-muted: #6c757d;
  --border-color: #495057;
  --shadow: rgba(0, 0, 0, 0.3);
  
  --sidebar-bg: #1a1d23;
  --sidebar-border: #495057;
  --sidebar-text: #adb5bd;
  --sidebar-hover: #343a40;
  --sidebar-active: #0d6efd;
  
  --header-bg: #1a1d23;
  --header-border: #495057;
  
  --card-bg: #212529;
  --card-border: #495057;
  --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
  
  --input-bg: #212529;
  --input-border: #495057;
  --input-focus: #86b7fe;
}

/* ===== RESET E BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
}

/* ===== LAYOUT PRINCIPAL ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  z-index: 1000;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: 70px;
}

.sidebar-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.sidebar.collapsed .logo-text {
  display: none;
}

.btn-close-sidebar {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transition);
}

.btn-close-sidebar:hover {
  background-color: var(--sidebar-hover);
}

.sidebar-content {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.nav-list {
  list-style: none;
  padding: 0 1rem;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--sidebar-text);
  text-decoration: none;
  border-radius: 8px;
  transition: var(--transition);
  font-weight: 500;
}

.nav-link:hover {
  background-color: var(--sidebar-hover);
  color: var(--text-primary);
}

.nav-link.active {
  background-color: var(--primary);
  color: white;
}

.nav-link i {
  font-size: 1.25rem;
  width: 20px;
  text-align: center;
}

.sidebar.collapsed .nav-link span {
  display: none;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--sidebar-border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background-color: var(--bg-tertiary);
  border-radius: 8px;
}

.user-avatar {
  font-size: 2rem;
  color: var(--primary);
}

.user-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.user-role {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.sidebar.collapsed .user-details {
  display: none;
}

/* Main Content */
.main-content {
  margin-left: 280px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.main-content.expanded {
  margin-left: 70px;
}

.header {
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 999;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-toggle-sidebar {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  transition: var(--transition);
}

.btn-toggle-sidebar:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}

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

.theme-toggle {
  position: relative;
}

.theme-toggle .dark-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .light-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .dark-icon {
  display: inline-block;
}

.notification-badge {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  background-color: var(--danger);
  color: white;
  font-size: 0.7rem;
  padding: 0.15rem 0.4rem;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.btn-user {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.btn-user:hover {
  background-color: var(--bg-tertiary);
}

.page-content {
  flex: 1;
  padding: 2rem;
}

/* ===== COMPONENTES ===== */

/* Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem;
  font-weight: 600;
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
}

/* Botões */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: white;
}

.btn-secondary {
  background-color: var(--secondary);
  color: white;
}

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

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

.btn-warning {
  background-color: var(--warning);
  color: var(--dark);
}

.btn-outline-primary {
  background-color: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn-outline-primary:hover {
  background-color: var(--primary);
  color: white;
}

/* Forms */
.form-control {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
  outline: none;
  background-color: var(--input-bg);
  color: var(--text-primary);
}

.form-label {
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-select {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
}

/* Tabelas */
.table {
  color: var(--text-primary);
}

.table th {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
}

.table td {
  border-color: var(--border-color);
  vertical-align: middle;
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--bg-secondary);
}

.table-hover tbody tr:hover {
  background-color: var(--bg-tertiary);
}

/* Dropdowns */
.dropdown-menu {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.dropdown-item {
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  transition: var(--transition);
}

.dropdown-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.dropdown-header {
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.5rem 1rem;
}

.dropdown-divider {
  border-color: var(--border-color);
}

/* Notificações */
.notification-dropdown {
  min-width: 320px;
  max-height: 400px;
  overflow-y: auto;
}

.notification-item {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.notification-item:hover {
  background-color: var(--bg-tertiary);
}

.notification-item:last-child {
  border-bottom: none;
}

.notification-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.notification-time {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Modais */
.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.modal-header {
  border-bottom-color: var(--border-color);
}

.modal-footer {
  border-top-color: var(--border-color);
}

.modal-title {
  color: var(--text-primary);
}

/* Toast */
.toast {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.toast-header {
  background-color: var(--bg-secondary);
  border-bottom-color: var(--border-color);
}

/* Badges */
.badge {
  font-size: 0.75rem;
  padding: 0.35em 0.65em;
  border-radius: 6px;
}

/* Progress */
.progress {
  background-color: var(--bg-tertiary);
}

/* Spinner */
.spinner-border {
  width: 2rem;
  height: 2rem;
}

/* ===== LAYOUT ESPECÍFICO ===== */

/* Dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.5rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  text-align: center;
}

.stat-card.success {
  background: linear-gradient(135deg, var(--success), #146c43);
}

.stat-card.warning {
  background: linear-gradient(135deg, var(--warning), #d39e00);
  color: var(--dark);
}

.stat-card.info {
  background: linear-gradient(135deg, var(--info), #0aa2c0);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Layout Builder */
.layout-builder {
  display: grid;
  grid-template-columns: 300px 1fr 300px;
  gap: 2rem;
  height: calc(100vh - 200px);
}

.layout-sidebar {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  overflow-y: auto;
}

.layout-canvas {
  background-color: var(--card-bg);
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}

.canvas-container {
  width: 100%;
  height: 100%;
  background-color: #000;
  position: relative;
  border-radius: 8px;
}

.layout-element {
  position: absolute;
  border: 2px dashed var(--primary);
  background-color: rgba(13, 110, 253, 0.1);
  cursor: move;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: 500;
}

.layout-element:hover {
  border-color: var(--primary-dark);
  background-color: rgba(13, 110, 253, 0.2);
}

.layout-element.selected {
  border-color: var(--success);
  background-color: rgba(25, 135, 84, 0.1);
}

/* Media Grid */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.media-item {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.media-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.media-thumbnail {
  width: 100%;
  height: 120px;
  background-color: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--text-secondary);
}

.media-info {
  padding: 1rem;
}

.media-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.media-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 1200px) {
  .layout-builder {
    grid-template-columns: 250px 1fr 250px;
  }
}

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
  }
  
  .sidebar-overlay.show {
    display: block;
  }
  
  .layout-builder {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .header {
    padding: 1rem;
  }
  
  .page-content {
    padding: 1rem;
  }
  
  .page-title {
    font-size: 1.25rem;
  }
  
  .media-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .header-left {
    gap: 0.5rem;
  }
  
  .header-right {
    gap: 0.5rem;
  }
  
  .btn-user span {
    display: none;
  }
  
  .notification-dropdown {
    min-width: 280px;
  }
}

/* ===== UTILITÁRIOS ===== */
.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shadow-sm {
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.shadow {
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.shadow-lg {
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

.border-radius-lg {
  border-radius: 12px;
}

.border-radius-xl {
  border-radius: 16px;
}

/* ===== ANIMAÇÕES ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

/* ===== AUTH LAYOUT ===== */
.auth-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  padding: 2rem;
}

.auth-card {
  background-color: var(--card-bg);
  border-radius: 16px;
  padding: 3rem;
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  width: 100%;
  max-width: 400px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo img {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  margin-bottom: 1rem;
}

.auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}