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

:root {
  /* Ultra-Premium Enterprise Light Theme (Stripe / Linear / Shopify Plus) */
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-hover: #f8fafc;

  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;
  --border-focus: #2563eb;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-tertiary: #94a3b8;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;

  --brand-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);

  /* Pazar Yeri Renk İmzaları */
  --trendyol-orange: #ea580c;
  --trendyol-bg: #fff7ed;
  --trendyol-border: #fed7aa;

  --hepsiburada-red: #e11d48;
  --hepsiburada-bg: #fff1f2;
  --hepsiburada-border: #fecdd3;

  --amazon-gold: #b45309;
  --amazon-bg: #fffbeb;
  --amazon-border: #fde68a;

  --meta-blue: #0284c7;
  --meta-bg: #f0f9ff;
  --meta-border: #bae6fd;

  /* Durum Renkleri */
  --success-bg: #f0fdf4;
  --success-text: #15803d;
  --success-border: #bbf7d0;

  --danger-bg: #fef2f2;
  --danger-text: #b91c1c;
  --danger-border: #fecaca;

  --warning-bg: #fffbeb;
  --warning-text: #b45309;
  --warning-border: #fde68a;

  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.07), 0 4px 6px -4px rgba(15, 23, 42, 0.03);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.011em;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Üst Header Bar */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 58px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
}

/* Logo & Marka */
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--brand-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.brand-name {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

/* Kanal Dropdown Seçici (Stripe / Linear Workspace Switcher) */
.channel-dropdown-wrapper {
  position: relative;
  display: inline-block;
}

.channel-dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 8px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-xs);
  outline: none;
  font-family: inherit;
}

.channel-dropdown-btn:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.channel-dropdown-btn[aria-expanded="true"] {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
  background: #ffffff;
}

.channel-dropdown-btn[aria-expanded="true"] .chevron-icon {
  transform: rotate(180deg);
}

.channel-dropdown-current-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.chevron-icon {
  color: var(--text-tertiary);
  transition: transform 0.2s ease;
  margin-left: 4px;
}

.channel-dropdown-btn * {
  pointer-events: none;
}

.channel-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  width: 320px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.16), 0 4px 10px -2px rgba(15, 23, 42, 0.08);
  z-index: 9999;
  display: none;
  overflow: hidden;
}

.channel-dropdown-menu.show {
  display: block !important;
  animation: dropdownFadeIn 0.15s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dropdown-header {
  padding: 10px 14px;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-subtle);
}

.dropdown-list {
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background 0.12s ease;
  cursor: pointer;
}

.dropdown-item:hover {
  background: #f8fafc;
}

.dropdown-item.active {
  background: #eff6ff;
}

.dropdown-item-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.dropdown-item-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.dropdown-item-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 4px;
}

.dropdown-item-sub {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

.dropdown-item-check {
  color: var(--primary);
  flex-shrink: 0;
}

.dropdown-footer {
  padding: 8px 12px;
  background: #f8fafc;
  border-top: 1px solid var(--border-subtle);
}

.dropdown-footer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  transition: color 0.12s ease;
}

.dropdown-footer-link:hover {
  color: var(--primary);
}

/* Ana Yapı (Grid & Sidebar) */
.app-wrapper {
  display: flex;
  flex: 1;
  width: 100%;
}

.app-sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  padding: 22px 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: calc(100vh - 58px);
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
  padding: 0 10px;
  margin-bottom: 8px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.12s ease;
}

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

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-link svg {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  stroke-width: 1.75;
}

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

/* İçerik Alanı: Sağdaki Boşluğu Yok Eden Tam Genişlik (100% Width) */
.main-content {
  flex: 1;
  min-width: 0;
  padding: 24px 32px;
  width: 100%;
}

.content-container {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

/* Kanal Başlık Şeridi (Channel Hero) */
.channel-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}

.channel-hero-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.channel-hero-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.channel-hero-avatar.trendyol {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  color: #ffffff;
}

.channel-hero-avatar.hepsiburada {
  background: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
  color: #ffffff;
}

.channel-hero-avatar.amazon {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #ffffff;
}

.channel-hero-avatar.meta {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
}

.channel-hero-avatar svg {
  width: 22px;
  height: 22px;
  stroke-width: 2.2;
}

.channel-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.channel-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

/* Metrik Grid (Renkli ve Canlı KPI Kartları) */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
  width: 100%;
}

.metric-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
  transition: all 0.15s ease;
}

.metric-card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.metric-card.accent-blue {
  border-top: 3px solid #2563eb;
}

.metric-card.accent-green {
  border-top: 3px solid #10b981;
}

.metric-card.accent-purple {
  border-top: 3px solid #8b5cf6;
}

.metric-card.accent-amber {
  border-top: 3px solid #f59e0b;
}

.metric-card.accent-red {
  border-top: 3px solid #ef4444;
}

.metric-card.accent-indigo {
  border-top: 3px solid #4f46e5;
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-muted);
}

.metric-icon-badge {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric-icon-badge.blue {
  background: #eff6ff;
  color: #2563eb;
  border: 1px solid #bfdbfe;
}

.metric-icon-badge.green {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}

.metric-icon-badge.purple {
  background: #f5f3ff;
  color: #7c3aed;
  border: 1px solid #ddd6fe;
}

.metric-icon-badge.amber {
  background: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}

.metric-icon-badge.red {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.metric-hint {
  font-size: 11.5px;
  color: var(--text-tertiary);
}

.metric-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.metric-pill.blue { background: #eff6ff; color: #1d4ed8; }
.metric-pill.green { background: #ecfdf5; color: #047857; }
.metric-pill.purple { background: #f5f3ff; color: #6d28d9; }
.metric-pill.amber { background: #fffbeb; color: #b45309; }
.metric-pill.red { background: #fef2f2; color: #b91c1c; }

/* Alt Sekmeler (Subnav Tabs) */
.subnav-tabs {
  display: flex;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
  width: 100%;
}

.subnav-tab {
  padding: 10px 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

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

.subnav-tab.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--primary);
}

.subnav-count {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 9999px;
  background: #f1f5f9;
  color: var(--text-secondary);
}

.subnav-tab.active .subnav-count {
  background: var(--primary-light);
  color: var(--primary);
}

/* Bilgi / Yapılandırma Uyarısı Çubuğu */
.notice-bar {
  padding: 13px 18px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  width: 100%;
}

/* Boş Durum (Empty State) Kartı */
.empty-state-card {
  padding: 48px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.empty-state-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: #f1f5f9;
  color: #64748b;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  border: 1px solid #e2e8f0;
}

.empty-state-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.empty-state-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  max-width: 440px;
  line-height: 1.5;
  margin-bottom: 16px;
}

/* Premium Kartlar */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.card:hover {
  border-color: #cbd5e1;
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: 0 3px 8px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-secondary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: #f8fafc;
  color: var(--text-primary);
  border-color: #cbd5e1;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Form Elemanları */
.form-label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 9px 13px;
  font-size: 13px;
  color: var(--text-primary);
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all 0.12s ease;
  box-shadow: var(--shadow-xs);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 5px;
  line-height: 1.4;
}

/* Rozetler (Pills) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 9999px;
  font-size: 11.5px;
  font-weight: 600;
  border: 1px solid transparent;
}

.badge-neutral {
  background: #f1f5f9;
  color: #475569;
  border-color: #e2e8f0;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: var(--success-border);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-color: var(--warning-border);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: var(--danger-border);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.success { background: #16a34a; box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.2); }
.status-dot.warning { background: #d97706; }
.status-dot.danger { background: #dc2626; }
.status-dot.neutral { background: #94a3b8; }

/* Tablo: Kenardan Kenara Tam Oturan Şık Izgara */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #ffffff;
  width: 100%;
  box-shadow: var(--shadow-xs);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.table th {
  padding: 11px 18px;
  background: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--border-color);
}

.table td {
  padding: 13px 18px;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-secondary);
}

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

.table tr:hover td {
  background: #fafafa;
}

/* ==========================================================================
   Responsive & Mobile Uyum Stilleri
   ========================================================================== */

/* Sunum & Analiz Özeti Sayfası Izgaraları */
.presentation-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.presentation-feature-card {
  padding: 14px;
  background: #f8fafc;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.presentation-feature-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.presentation-feature-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.presentation-feature-desc {
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.presentation-grid-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
}

.presentation-channel-card {
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  transition: all 0.15s ease;
}

.presentation-channel-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-xs);
}

.presentation-grid-modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 16px;
}

.presentation-module-card {
  padding: 16px;
  background: #f8fafc;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: transform 0.15s ease, background 0.15s ease;
}

.presentation-module-card:hover {
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

/* Entegrasyon & Dashboard Izgaraları */
.integrations-grid,
.dashboard-channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

/* Tablet & Orta Ekran (< 900px) */
@media (max-width: 900px) {
  .app-sidebar {
    display: none;
  }
  .main-content {
    padding: 20px 16px;
  }
}

/* Mobil Cihaz Uyumu (< 640px) */
@media (max-width: 640px) {
  .app-header {
    height: auto;
    min-height: 54px;
    padding: 8px 12px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .header-brand .brand-name {
    display: none; /* Mobilde sadece şık ikon kalsın */
  }

  .channel-dropdown-btn {
    padding: 4px 8px;
    max-width: 170px;
  }

  .channel-dropdown-btn span:nth-child(2) {
    max-width: 100px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .channel-dropdown-menu {
    position: fixed;
    top: 60px;
    left: 12px;
    right: 12px;
    width: auto;
    max-width: calc(100vw - 24px);
  }

  .main-content {
    padding: 14px 10px;
  }

  .card {
    padding: 16px !important;
    border-radius: var(--radius-sm);
  }

  .presentation-hero {
    padding: 18px !important;
  }

  .presentation-hero h1 {
    font-size: 19px !important;
  }

  .presentation-hero p {
    font-size: 12.5px !important;
  }

  .presentation-grid-4 {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .presentation-grid-channels {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .presentation-grid-modules {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .presentation-summary {
    flex-direction: column;
    align-items: stretch !important;
    gap: 12px;
  }

  .presentation-return-btn {
    width: 100%;
    justify-content: center;
  }

  .integrations-grid,
  .dashboard-channels-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .subnav-tabs {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    padding-bottom: 4px;
    gap: 6px;
  }

  .subnav-tab {
    flex: 0 0 auto;
    font-size: 12px;
    padding: 7px 12px;
  }
}

/* Çok Küçük Ekranlar (< 380px) */
@media (max-width: 380px) {
  .presentation-grid-channels {
    grid-template-columns: 1fr;
  }
  
  .app-header {
    padding: 8px 8px;
  }

  .btn {
    font-size: 12px;
    padding: 6px 10px;
  }
}