/* ========================================
   SGM-IA — Design System Premium Dark Mode
   Alty Cel — Sistema de Manutenção com IA
   ======================================== */

:root {
  /* Cores principais */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card-hover: #1f2a42;
  --bg-input: #0f1729;
  --bg-sidebar: #0d1321;

  /* Acentos */
  --accent-primary: #3b82f6;
  --accent-secondary: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --accent-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  --accent-ia: linear-gradient(135deg, #8b5cf6, #ec4899);

  /* Texto */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #60a5fa;

  /* Status */
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;

  /* Bordas */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-active: rgba(59, 130, 246, 0.4);

  /* Dimensões */
  --sidebar-width: 260px;
  --header-height: 60px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.15);

  /* Transições */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

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

.logo-icon {
  font-size: 28px;
  width: 44px;
  height: 44px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--accent-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-menu {
  list-style: none;
  padding: 12px 10px;
  flex: 1;
}

.nav-item {
  margin-bottom: 2px;
}

.nav-divider {
  height: 1px;
  background: var(--border-color);
  margin: 12px 10px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link:hover {
  background: rgba(59, 130, 246, 0.08);
  color: var(--text-primary);
  transform: translateX(2px);
}

.nav-link.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent-primary);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--accent-primary);
  border-radius: 0 4px 4px 0;
}

.nav-highlight {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1)) !important;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.nav-highlight:hover {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(236, 72, 153, 0.18)) !important;
  border-color: rgba(139, 92, 246, 0.4);
}

.nav-icon {
  font-size: 1.15rem;
  width: 24px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
  animation: pulse-dot 2s infinite;
}

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

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: 30px;
  width: calc(100% - var(--sidebar-width));
}

.page-content {
  max-width: 1400px;
  margin: 0 auto;
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========================================
   STATS GRID
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.stat-card:hover::after {
  opacity: 1;
}

.stat-icon {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* ========================================
   CARDS & CONTAINERS
   ======================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--border-active);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ========================================
   DATA GRID (aparelhos, defeitos, etc.)
   ======================================== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.data-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}

.data-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

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

.data-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: rgba(59, 130, 246, 0.1);
  flex-shrink: 0;
}

.data-card-title {
  font-weight: 700;
  font-size: 1rem;
}

.data-card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.data-card-body {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.data-card-footer {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}

/* ========================================
   TAGS / BADGES
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.tag-blue { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.tag-purple { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.tag-green { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.tag-red { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.tag-yellow { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.tag-cyan { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }

/* ========================================
   FORMS
   ======================================== */
.form-group {
  margin-bottom: 16px;
}

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

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

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

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.25); }

.btn-success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}
.btn-success:hover { background: rgba(34, 197, 94, 0.25); }

.btn-sm { padding: 6px 12px; font-size: 0.78rem; }
.btn-lg { padding: 14px 28px; font-size: 0.95rem; }

.btn-ia {
  background: var(--accent-ia);
  color: white;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.3);
}
.btn-ia:hover {
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
  transform: translateY(-1px);
}

/* ========================================
   SEARCH BAR
   ======================================== */
.search-bar {
  position: relative;
  margin-bottom: 24px;
}

.search-bar input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-normal);
}

.search-bar input:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.search-bar::before {
  content: '🔍';
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
}

/* ========================================
   TOOLBAR
   ======================================== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

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

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

/* ========================================
   CHAT IA
   ======================================== */
.chat-container {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 160px);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.chat-header {
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-header-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-ia);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.chat-header-info h3 {
  font-size: 1rem;
  font-weight: 700;
}

.chat-header-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-message {
  max-width: 85%;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.7;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-message.user {
  align-self: flex-end;
  background: var(--accent-gradient);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-message.bot {
  align-self: flex-start;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 4px;
}

.chat-message.bot pre {
  background: var(--bg-primary);
  padding: 12px;
  border-radius: var(--radius-sm);
  margin: 8px 0;
  overflow-x: auto;
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.chat-input-area input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.chat-input-area input:focus {
  border-color: var(--accent-secondary);
}

.chat-model-select {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-model-select input {
  width: 200px;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.82rem;
  outline: none;
}

/* ========================================
   LOADING / TYPING INDICATOR
   ======================================== */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 10px 16px;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* ========================================
   MODAL
   ======================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateY(-20px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.modal-body {
  padding: 24px;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  min-width: 280px;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.info { border-left: 3px solid var(--info); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========================================
   EMPTY STATE
   ======================================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 1rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.empty-state-sub {
  font-size: 0.85rem;
}

/* ========================================
   TABLE (for details)
   ======================================== */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
}

.data-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table tr:hover td {
  background: rgba(59, 130, 246, 0.04);
}

/* ========================================
   TIMELINE (histórico)
   ======================================== */
.timeline {
  position: relative;
  padding-left: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.timeline-item:hover {
  border-color: var(--border-active);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-primary);
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.3);
}

.timeline-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 6px;
}

/* ========================================
   FILE UPLOAD
   ======================================== */
.file-drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  color: var(--text-muted);
}

.file-drop-zone:hover, .file-drop-zone.dragover {
  border-color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.05);
  color: var(--text-primary);
}

.file-drop-zone-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .data-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   TABS & DOCUMENTS (SGM-IA)
   ======================================== */
.tabs {
  display: flex;
  gap: 10px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 20px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 10px 15px;
  cursor: pointer;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.tab-btn:hover {
  color: var(--text-color);
}

.tab-btn.active {
  color: var(--text-accent);
  border-bottom-color: var(--text-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin: 15px 0;
  font-size: 0.85rem;
  line-height: 1.4;
}

.alert-info {
  background: rgba(59, 130, 246, 0.08);
  color: #60a5fa;
  border-left: 4px solid var(--accent-primary);
}

.doc-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-color);
  margin-bottom: 8px;
  transition: all 0.2s;
}

.doc-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--text-accent);
}

.doc-icon {
  font-size: 1.2rem;
}