:root {
  --bg-main: #0b0e14;
  --bg-card: rgba(22, 27, 39, 0.75);
  --bg-card-hover: rgba(30, 37, 54, 0.85);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(225, 48, 108, 0.5);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --ig-gradient: linear-gradient(135deg, #833ab4 0%, #fd1d1d 50%, #fcb045 100%);
  --ig-pink: #e1306c;
  --ig-purple: #833ab4;
  --accent-blue: #38bdf8;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(131, 58, 180, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(225, 48, 108, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(253, 29, 29, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
}

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

/* Sidebar */
.sidebar {
  width: 270px;
  background: rgba(15, 19, 28, 0.85);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border-glass);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px 8px;
  border-bottom: 1px solid var(--border-glass);
  margin-bottom: 24px;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--ig-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 22px;
  box-shadow: 0 4px 15px rgba(225, 48, 108, 0.35);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--ig-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-item button:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-item.active button {
  color: #fff;
  background: linear-gradient(90deg, rgba(225, 48, 108, 0.18), rgba(131, 58, 180, 0.12));
  border: 1px solid rgba(225, 48, 108, 0.3);
  box-shadow: 0 4px 12px rgba(225, 48, 108, 0.15);
}

.nav-item .icon {
  font-size: 1.15rem;
}

/* Sidebar Footer / Account Status */
.account-badge-card {
  padding: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.account-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--ig-pink);
  object-fit: cover;
}

.account-info {
  overflow: hidden;
  flex: 1;
}

.account-username {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.account-mode-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 12px;
  letter-spacing: 0.5px;
}

.mode-demo {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.mode-live {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Main Content Area */
.main-wrapper {
  margin-left: 270px;
  flex: 1;
  padding: 32px 40px;
  max-width: 1400px;
}

/* Top Bar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.page-heading h1 {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

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

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

/* Tab Panels */
.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Glass Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

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

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 2px;
}

/* Metrics KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.kpi-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: var(--transition);
}

.kpi-card:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  border-color: rgba(225, 48, 108, 0.25);
}

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.kpi-icon {
  font-size: 1.25rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.kpi-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 6px;
  color: var(--accent-green);
}

/* Analytics Charts & Heatmap Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1.1fr;
  gap: 24px;
  margin-bottom: 28px;
}

/* Heatmap Grid for Best Time to Post */
.heatmap-container {
  overflow-x: auto;
  margin-top: 12px;
}

.heatmap-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.heatmap-table th {
  padding: 6px 4px;
  color: var(--text-muted);
  font-weight: 600;
  text-align: center;
}

.heatmap-table td {
  padding: 5px 3px;
  text-align: center;
}

.heatmap-day-label {
  text-align: left !important;
  color: var(--text-secondary);
  font-weight: 600;
  padding-right: 12px !important;
  width: 70px;
}

.heatmap-cell {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  margin: 0 auto;
  transition: transform 0.2s;
  cursor: pointer;
}

.heatmap-cell:hover {
  transform: scale(1.3);
  z-index: 10;
  outline: 2px solid white;
}

/* Heatmap color intensity levels */
.heat-0 { background: rgba(255, 255, 255, 0.03); }
.heat-1 { background: rgba(225, 48, 108, 0.20); }
.heat-2 { background: rgba(225, 48, 108, 0.45); }
.heat-3 { background: rgba(225, 48, 108, 0.75); }
.heat-4 { background: rgba(253, 29, 29, 0.95); box-shadow: 0 0 8px rgba(253, 29, 29, 0.5); }

/* Best times recommendation badges */
.recom-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.recom-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
}

.recom-time-badge {
  background: var(--ig-gradient);
  color: white;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

/* Post Performance Gallery */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.post-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: rgba(225, 48, 108, 0.3);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.4);
}

.post-media-box {
  position: relative;
  width: 100%;
  height: 180px;
  background: #111;
  overflow: hidden;
}

.post-media-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.post-card:hover .post-media-box img {
  transform: scale(1.05);
}

.post-type-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  color: white;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
}

.post-content {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.post-caption-snippet {
  font-size: 0.85rem;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-stats-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-top: auto;
}

.stat-group {
  display: flex;
  gap: 10px;
}

.engagement-score {
  font-weight: 800;
  color: var(--ig-pink);
}

/* AI Studio Layout */
.ai-studio-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.92rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--ig-pink);
  box-shadow: 0 0 0 3px rgba(225, 48, 108, 0.2);
  background: rgba(255, 255, 255, 0.07);
}

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

.btn-group-toggle {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.toggle-pill {
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.toggle-pill.active, .toggle-pill:hover {
  background: rgba(225, 48, 108, 0.15);
  border-color: var(--ig-pink);
  color: #fff;
}

/* Primary Gradient Button */
.btn-primary {
  background: var(--ig-gradient);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 6px 20px rgba(225, 48, 108, 0.35);
  transition: var(--transition);
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(225, 48, 108, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Instagram Phone / Post Mockup */
.ig-mockup-card {
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.mockup-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mockup-user img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--ig-pink);
}

.mockup-username {
  font-size: 0.88rem;
  font-weight: 700;
  color: white;
}

.mockup-media-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, #1f2430, #151821);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 12px;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}

.mockup-media-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mockup-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 1.25rem;
  color: white;
}

.mockup-actions-left {
  display: flex;
  gap: 16px;
}

.mockup-caption-box {
  font-size: 0.86rem;
  line-height: 1.5;
  color: #f1f5f9;
  white-space: pre-wrap;
  max-height: 300px;
  overflow-y: auto;
  padding-right: 6px;
}

/* Hashtags Pills */
.hashtag-tier-box {
  margin-top: 16px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
}

.tier-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-badge {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.2);
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.78rem;
}

/* Content Calendar Cards */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.calendar-day-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: var(--transition);
}

.calendar-day-card:hover {
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
}

.cal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.cal-day-badge {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.cal-format-pill {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(225, 48, 108, 0.15);
  color: var(--ig-pink);
}

.cal-topic {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.cal-time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Table styles for Scheduler & Interactions */
.custom-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

.custom-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-glass);
  text-transform: uppercase;
}

.custom-table td {
  padding: 14px 16px;
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.status-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
}

.status-scheduled { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.status-published { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.status-failed { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

/* Comments Inbox */
.comment-item {
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.comment-author {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.comment-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.comment-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 6px 0;
}

.comment-reply-preview {
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--accent-green);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.82rem;
  color: var(--text-primary);
  margin-top: 8px;
}

/* Toast notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: rgba(18, 23, 34, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-left: 4px solid var(--ig-pink);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Responsive */
@media (max-width: 1024px) {
  .charts-grid, .ai-studio-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    width: 70px;
    padding: 16px 8px;
  }
  .brand-title, .brand-subtitle, .nav-item span:last-child, .account-info {
    display: none;
  }
  .main-wrapper {
    margin-left: 70px;
    padding: 20px;
  }
}