/*
 * OrcomAi Workspace Stylesheet
 * Version 2.0.0 (Consolidated All Updates)
 */

/* ---------------------------------- */
/* 1. CSS Variables (Enhanced)        */
/* ---------------------------------- */

:root {
  /* Dark Mode (Default) */
  --bg: #0e0e0f;
  --bg-soft: #141416;
  --border: #2a2b2f;
  --fg: #f5f5f7;
  --muted: #a3a3a8;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-text: #ffffff;
  --primary-rgb: 59, 130, 246;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
  
  --danger: #e57373;
  --danger-soft: rgba(229, 115, 115, 0.1);
  --danger-rgb: 229, 115, 115;
  --success: #81c784;
  --success-soft: rgba(129, 199, 132, 0.1);
  --success-rgb: 129, 199, 132;
  --warning: #ffb74d;
  --warning-soft: rgba(255, 183, 77, 0.1);
  --warning-rgb: 255, 183, 77;
}

body.light {
  /* Light Mode */
  --bg: #ffffff;
  --bg-soft: #f5f6f7;
  --border: #e3e5e8;
  --fg: #0e0e0f;
  --muted: #61636b;
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-text: #ffffff;
  --primary-rgb: 59, 130, 246;
  --shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* ---------------------------------- */
/* 2. Base & Reset                    */
/* ---------------------------------- */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 16px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a {
  color: var(--primary);
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 6px;
}

/* ---------------------------------- */
/* 3. Layout & Structure              */
/* ---------------------------------- */

.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.main-content-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Sidebars */
.sidebar {
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  border-right: 1px solid var(--border);
  padding: 1rem;
  width: 280px;
  flex-shrink: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.sidebar.sidebar-left.collapsed {
  width: 70px;
}

.sidebar.sidebar-right {
  border-right: none;
  border-left: 1px solid var(--border);
  width: 350px;
}

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

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--fg);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text {
  transition: opacity 0.3s ease;
}

.sidebar-left.collapsed .logo-text,
.sidebar-left.collapsed .nav-text,
.sidebar-left.collapsed .user-info,
.sidebar-left.collapsed .logout-text,
.sidebar-left.collapsed .nav-badge {
  display: none;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.sidebar-toggle:hover {
  background: var(--bg-soft);
  color: var(--fg);
}

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

.sidebar-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
  margin: 0 0.5rem;
}

.nav-item:hover {
  background-color: var(--bg-soft);
  color: var(--fg);
}

.nav-item.active {
  background-color: var(--primary);
  color: var(--primary-text);
  font-weight: 600;
}

.nav-icon {
  font-size: 1.25rem;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.nav-text {
  font-weight: 500;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.nav-badge {
  background: var(--primary);
  color: white;
  border-radius: 12px;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: auto;
  min-width: 20px;
  text-align: center;
}

.nav-divider {
  height: 1px;
  background: var(--border);
  margin: 0.5rem 1rem;
}

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

.user-profile {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.user-profile-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  text-decoration: none;
  color: var(--fg);
  border-radius: 8px;
  transition: background-color 0.2s ease;
}

.user-profile-link:hover {
  background: var(--bg-soft);
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  flex-direction: column;
  transition: opacity 0.3s ease;
}

.username {
  font-weight: 600;
  font-size: 0.9rem;
}

.user-status {
  font-size: 0.75rem;
  color: var(--success);
}

.user-actions {
  display: flex;
  justify-content: center;
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  color: var(--muted);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

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

/* Main Content */
.main-content {
  flex-grow: 1;
  padding: 2rem;
  overflow-y: auto;
  background-color: var(--bg-soft);
}

.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--muted);
  font-size: 1rem;
}

.section-header {
  margin: 2rem 0 1rem;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  color: var(--fg);
}

.section-header p {
  color: var(--muted);
  margin: 0;
}

/* ---------------------------------- */
/* 4. Components                      */
/* ---------------------------------- */

/* Buttons */
.btn, .btn-primary, .btn-secondary, .btn-danger {
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  background-color: var(--bg-soft);
  color: var(--fg);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  font-weight: 600;
}

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

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--fg);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

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

.icon-button {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.icon-button:hover {
  background-color: var(--bg-soft);
  color: var(--fg);
}

/* Cards */
.card {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.card-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}

.card-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.card-body {
  padding: 1.5rem;
}

.card-body p {
  margin-bottom: 1rem;
  color: var(--muted);
}

/* Stats & Feature Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  font-size: 2rem;
  opacity: 0.8;
}

.stat-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--fg);
}

.stat-content p {
  margin: 0.25rem 0 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-link {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--primary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 500;
}

.stat-link:hover {
  text-decoration: underline;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.75rem 0;
  color: var(--fg);
}

.card-content p {
  color: var(--muted);
  margin: 0 0 1.5rem 0;
  line-height: 1.5;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  font-size: 1rem;
  box-sizing: border-box;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input[type="password"] {
  font-family: sans-serif;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.form-description {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.5rem;
  min-height: 1rem;
}

.password-input-container {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem;
}

.form-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Notifications & Alerts */
.notification {
  padding: 1rem;
  margin-bottom: 1.5rem;
  border-radius: 8px;
  border: 1px solid;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.notification.success {
  background-color: var(--success-soft);
  color: var(--success);
  border-color: var(--success);
}

.notification.error {
  background-color: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger);
}

.notification.warning {
  background-color: var(--warning-soft);
  color: var(--warning);
  border-color: var(--warning);
}

.notification.info {
  background-color: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  border-color: var(--primary);
}

.notification-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  max-width: 400px;
}

.notification-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem;
  margin-left: auto;
}

.notification-close:hover {
  color: var(--fg);
}

/* Loading Spinner */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  color: white;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
  margin-bottom: 1rem;
}

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

/* ---------------------------------- */
/* 5. Page Specific Styles            */
/* ---------------------------------- */

/* --- Dashboard (index.php) --- */
.quick-chat-section {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 2rem;
}

.quick-chat-form {
  margin-bottom: 1rem;
}

.model-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.model-selector label {
  font-weight: 500;
  color: var(--fg);
}

.model-selector select {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  color: var(--fg);
}

.chat-input-area {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
}

.chat-input-area textarea {
  flex: 1;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  color: var(--fg);
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
}

.chat-input-area textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.chat-response {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-top: 1rem;
  display: none;
}

.response-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.response-header strong {
  color: var(--fg);
}

.btn-copy {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
}

.btn-copy:hover {
  background: var(--bg);
  color: var(--fg);
}

.response-content {
  color: var(--fg);
  line-height: 1.5;
  white-space: pre-wrap;
}

/* --- API Keys (api-key.php) --- */
.api-key-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.api-keys-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.api-key-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.2s ease;
}

.api-key-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.key-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.service-info {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.service-icon {
  font-size: 1.5rem;
  margin-top: 0.25rem;
}

.service-details h4 {
  margin: 0 0 0.25rem 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.service-details p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.key-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-test, .btn-delete {
  background: none;
  border: none;
  padding: 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-test:hover {
  background: var(--primary);
  color: var(--primary-text);
}

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

.key-preview {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  margin-bottom: 1rem;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--muted);
  word-break: break-all;
}

.key-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.status-indicator.connected .status-dot {
  background: var(--success);
}

.status-indicator.error .status-dot {
  background: var(--danger);
}

.status-indicator.testing .status-dot {
  background: var(--warning);
  animation: pulse 1.5s infinite;
}

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

.last-tested {
  color: var(--muted);
  font-size: 0.7rem;
}

.service-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.service-status-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.service-status-card:hover {
  border-color: var(--primary);
}

.service-status-card .service-icon {
  font-size: 1.5rem;
}

.service-info h4 {
  margin: 0 0 0.25rem 0;
  font-size: 1rem;
}

.service-info p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.service-status {
  margin-left: auto;
}

.status {
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status.unknown {
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--border);
}

.status.connected {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid var(--success);
}

.status.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* --- Projects (projects.php) --- */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state h4 {
  margin: 0 0 0.5rem 0;
  color: var(--muted);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

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

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.project-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.project-name {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--fg);
}

.project-description {
  color: var(--muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.project-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.project-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* --- Project Details (project.php) --- */
.project-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  margin-bottom: 2rem;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.project-info h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg);
}

.project-description {
  margin: 0 0 1rem 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.project-stats {
  display: flex;
  gap: 1.5rem;
}

.stat {
  color: var(--muted);
  font-size: 0.9rem;
}

.stat strong {
  color: var(--fg);
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

.project-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Files Panel */
.files-panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  height: fit-content;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.panel-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.files-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 8px;
  transition: background-color 0.2s ease;
  margin-bottom: 0.5rem;
}

.file-item:hover {
  background: var(--bg-soft);
}

.file-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

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

.file-name {
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 0.25rem;
  word-break: break-word;
}

.file-meta {
  display: flex;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.file-status {
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
}

.status-analyzed {
  background: var(--success-soft);
  color: var(--success);
}

.status-processing {
  background: var(--warning-soft);
  color: var(--warning);
}

.status-error {
  background: var(--danger-soft);
  color: var(--danger);
}

.status-uploaded {
  background: var(--bg-soft);
  color: var(--muted);
}

.file-actions {
  opacity: 0;
  transition: opacity 0.2s ease;
}

.file-item:hover .file-actions {
  opacity: 1;
}

/* Chat Panel */
.chat-panel {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  height: 70vh;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.chat-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.chat-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.model-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-soft);
  padding: 0.4rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.welcome-message {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}

.welcome-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.welcome-content h4 {
  margin: 0 0 0.5rem 0;
  color: var(--muted);
}

.suggested-questions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.5rem;
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

.suggestion-btn {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--fg);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  font-size: 0.9rem;
}

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

/* Message Styles */
.message {
  display: flex;
  gap: 0.75rem;
  max-width: 85%;
  animation: messageSlideIn 0.3s ease-out;
}

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

.message-user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-assistant {
  align-self: flex-start;
}

.message-system {
  align-self: center;
  max-width: 90%;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.message-user .message-avatar {
  background: var(--primary);
  color: var(--primary-text);
}

.message-content {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
  flex: 1;
}

.message-user .message-content {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
}

.sender-name {
  font-weight: 600;
  color: var(--fg);
}

.message-user .sender-name {
  color: var(--primary-text);
}

.message-time {
  color: var(--muted);
  font-size: 0.7rem;
}

.message-user .message-time {
  color: rgba(255, 255, 255, 0.7);
}

.message-text {
  line-height: 1.5;
}

.message-text p {
  margin: 0 0 0.5rem 0;
}

.message-text p:last-child {
  margin-bottom: 0;
}

/* Typing Indicator */
.typing-indicator {
  display: none;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-soft);
}

.typing-indicator.show {
  display: flex;
}

.typing-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.typing-content {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.typing-dots {
  display: flex;
  gap: 0.25rem;
}

.typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.typing-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

.typing-text {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Chat Input */
.chat-input-container {
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.chat-form {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  max-width: 800px;
  margin: 0 auto;
}

.input-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.attachment-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.attachment-btn:hover {
  background: var(--bg-soft);
  color: var(--fg);
}

.message-input-container {
  flex: 1;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
  transition: all 0.2s ease;
}

.message-input-container:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

#chat-message-input {
  width: 100%;
  border: none;
  background: none;
  color: var(--fg);
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  outline: none;
  min-height: 24px;
  max-height: 120px;
}

.input-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

.char-count {
  color: var(--muted);
}

.quick-actions {
  display: flex;
  gap: 0.25rem;
}

.quick-action {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  transition: all 0.2s ease;
}

.quick-action:hover {
  background: var(--bg);
  color: var(--fg);
}

.send-button {
  background: var(--primary);
  color: var(--primary-text);
  border: none;
  border-radius: 8px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
  transform: scale(1.05);
}

.send-button:disabled {
  background: var(--muted);
  cursor: not-allowed;
  transform: none;
}

.input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
  transition: all 0.2s ease;
}

.input-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.context-files {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-soft);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.context-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
}

.clear-context {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.clear-context:hover {
  background: var(--danger-soft);
}

.context-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.context-file {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  border: 1px solid var(--border);
}

.context-remove {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 0.1rem;
  border-radius: 2px;
}

.context-remove:hover {
  background: var(--danger-soft);
}

/* Attached Files */
.attached-files {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.files-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.clear-files-btn {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.clear-files-btn:hover {
  background: var(--danger-soft);
}

.files-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
}

.file-icon {
  font-size: 0.9rem;
}

.file-name {
  color: var(--fg);
}

.file-remove {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 2px;
}

.file-remove:hover {
  background: var(--danger-soft);
}

/* Upload Components */
.upload-section {
  margin-bottom: 2rem;
}

.upload-tabs {
  display: flex;
  background: var(--bg-soft);
  border-radius: 8px;
  padding: 0.25rem;
  margin-bottom: 1rem;
}

.upload-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 0.5rem;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.upload-tab.active {
  background: var(--primary);
  color: white;
}

.upload-tab-content {
  display: none;
}

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

.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 1rem;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.05);
}

.upload-placeholder {
  color: var(--muted);
}

.upload-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.upload-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.supported-formats {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1rem;
  text-align: center;
}

.project-selector {
  margin-bottom: 1rem;
}

.project-selector label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--fg);
  font-size: 0.9rem;
}

.project-selector select, .project-selector input {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.upload-btn {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.upload-btn:disabled {
  background: var(--muted);
  cursor: not-allowed;
}

.upload-progress {
  background: var(--bg-soft);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.upload-progress h5 {
  margin: 0 0 0.75rem 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 4px;
  transition: width 0.3s ease;
  width: 0%;
}

.progress-text {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.file-list {
  max-height: 150px;
  overflow-y: auto;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
}

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

.file-name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-status {
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
}

.file-status.uploading {
  background: var(--warning);
  color: white;
}

.file-status.completed {
  background: var(--success);
  color: white;
}

.file-status.error {
  background: var(--danger);
  color: white;
}

.recent-files {
  margin-top: 1rem;
}

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

.file-entry {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  border-radius: 6px;
  transition: background-color 0.2s ease;
  cursor: pointer;
}

.file-entry:hover {
  background: var(--bg-soft);
}

.file-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

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

.file-name {
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: 0.7rem;
  color: var(--muted);
}

.refresh-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.refresh-btn:hover {
  background: var(--bg-soft);
  color: var(--fg);
}

/* Model Selector */
.model-selector {
  position: relative;
}

.model-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 160px;
}

.model-dropdown-btn:hover {
  background: var(--border);
}

.model-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  width: 280px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: none;
  margin-top: 0.5rem;
  max-height: 400px;
  overflow-y: auto;
}

.model-dropdown.show {
  display: block;
}

.model-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  border-bottom: 1px solid var(--border);
}

.model-option:last-child {
  border-bottom: none;
}

.model-option:hover {
  background: var(--bg-soft);
}

.model-option .model-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.model-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.model-info strong {
  font-size: 0.9rem;
  color: var(--fg);
}

.model-info small {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

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

.modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1.5rem;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.setting-group {
  margin-bottom: 1.5rem;
}

.setting-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--fg);
}

.setting-group input[type="range"] {
  width: 100%;
  margin-bottom: 0.5rem;
}

.setting-group small {
  color: var(--muted);
  font-size: 0.8rem;
}

/* Connection Status */
.connection-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

/* Header Actions */
.header-actions {
  display: flex;
  gap: 0.5rem;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.chat-title h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--fg);
}

/* Mobile Overlay */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  display: none;
}

.sidebar-overlay.mobile-open {
  display: block;
}

/* ---------------------------------- */
/* 6. Utility Classes                 */
/* ---------------------------------- */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }
.d-block { display: block; }

.flex-1 { flex: 1; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }
.gap-5 { gap: 3rem; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: 6px; }
.rounded-lg { border-radius: 12px; }

.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

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

.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--muted); }
.text-fg { color: var(--fg); }

/* ---------------------------------- */
/* 7. Responsive Design               */
/* ---------------------------------- */

@media (max-width: 1199px) {
  .sidebar {
    width: 240px;
  }
}

@media (max-width: 1024px) {
  .project-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .files-panel {
    max-height: 400px;
  }
  
  .chat-panel {
    height: 60vh;
  }
}

@media (max-width: 768px) {
  .main-wrapper {
    flex-direction: column;
    height: auto;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
    flex-direction: row;
    align-items: center;
    padding: 0.5rem 1rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  
  .sidebar.sidebar-right {
    display: none;
  }
  
  .sidebar-header {
    padding: 0.5rem;
  }
  
  .sidebar-nav {
    flex-grow: 1;
    overflow-x: auto;
  }
  
  .sidebar-nav ul {
    flex-direction: row;
    gap: 0;
  }
  
  .nav-item {
    padding: 0.5rem 0.75rem;
  }
  
  .sidebar-footer {
    display: none;
  }
  
  .main-content {
    padding: 1.5rem;
  }
  
  .page-header h1 {
    font-size: 1.8rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  
  .header-actions {
    justify-content: flex-start;
  }
  
  .project-stats {
    justify-content: space-between;
  }
  
  .project-layout {
    padding: 0 1rem;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .api-keys-grid {
    grid-template-columns: 1fr;
  }
  
  .service-status-grid {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .key-header {
    flex-direction: column;
    gap: 1rem;
  }
  
  .key-actions {
    align-self: flex-end;
  }
  
  .chat-wrapper .sidebar-left {
    display: none;
  }
  
  .chat-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .model-selector {
    width: 100%;
  }
  
  .model-selector select {
    width: 100%;
  }
  
  .chat-history {
    padding: 1rem;
  }
  
  .message {
    max-width: 95%;
  }
  
  .chat-input-container {
    padding: 1rem;
  }
  
  .chat-form {
    gap: 0.5rem;
  }
  
  .modal-content {
    width: 95%;
    margin: 1rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .chat-input-area {
    flex-direction: column;
  }
  
  .chat-input-area textarea {
    min-height: 100px;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: 1rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .api-key-stats {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .page-header h1 {
    font-size: 1.5rem;
  }
}

/* Print Styles */
@media print {
  .sidebar-left,
  .sidebar-right,
  .sidebar-toggle,
  .theme-toggle,
  .btn-primary,
  .notification-container {
    display: none !important;
  }
  
  .main-content {
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }
  
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
  
  .card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    break-inside: avoid;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High Contrast Support */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }
  
  .btn-primary {
    border: 2px solid currentColor;
  }
}

/* Focus styles for keyboard navigation */
.skip-link:focus,
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Focus visible polyfill fallback */
.focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Enhanced Styles for JavaScript-enabled browsers */
.enhanced .no-js-only {
  display: none !important;
}

.enhanced .js-only {
  display: block !important;
}

/* Scrollbar Styling */
.sidebar-nav::-webkit-scrollbar,
.sidebar-content::-webkit-scrollbar,
.chat-messages::-webkit-scrollbar,
.files-list::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track,
.sidebar-content::-webkit-scrollbar-track,
.chat-messages::-webkit-scrollbar-track,
.files-list::-webkit-scrollbar-track {
  background: var(--bg-soft);
}

.sidebar-nav::-webkit-scrollbar-thumb,
.sidebar-content::-webkit-scrollbar-thumb,
.chat-messages::-webkit-scrollbar-thumb,
.files-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover,
.sidebar-content::-webkit-scrollbar-thumb:hover,
.chat-messages::-webkit-scrollbar-thumb:hover,
.files-list::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}