/* ============================================================
   StreamVault — Custom Styles (Tailwind Extension Layer)
   Teamseven Private Limited | https://teamseven.ltd
   ============================================================ */

/* ─── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ─── CSS Variables / Design Tokens ────────────────────────── */
:root {
  --sv-primary:        #EF4444;
  --sv-primary-dark:   #DC2626;
  --sv-primary-light:  #FCA5A5;
  --sv-accent:         #F97316;
  --sv-gradient:       linear-gradient(135deg, #EF4444 0%, #F97316 100%);

  /* Light mode surfaces */
  --sv-bg:             #FFFFFF;
  --sv-bg-secondary:   #F9F9F9;
  --sv-bg-tertiary:    #F0F0F0;
  --sv-border:         #E5E7EB;
  --sv-text:           #0F0F0F;
  --sv-text-muted:     #6B7280;
  --sv-text-subtle:    #9CA3AF;

  /* Sidebar */
  --sv-sidebar-w:      240px;
  --sv-sidebar-w-sm:   72px;

  /* Navbar */
  --sv-navbar-h:       64px;

  /* Radius */
  --sv-radius-sm:      8px;
  --sv-radius-md:      12px;
  --sv-radius-lg:      16px;
  --sv-radius-xl:      24px;
  --sv-radius-full:    9999px;

  /* Shadows */
  --sv-shadow-sm:      0 1px 3px rgba(0,0,0,.08);
  --sv-shadow-md:      0 4px 16px rgba(0,0,0,.10);
  --sv-shadow-lg:      0 8px 32px rgba(0,0,0,.12);
  --sv-shadow-glow:    0 0 24px rgba(239,68,68,.25);

  /* Transitions */
  --sv-transition:     0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --sv-transition-slow:0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Dark Mode Overrides ───────────────────────────────────── */
.dark {
  --sv-bg:             #0F0F0F;
  --sv-bg-secondary:   #1A1A1A;
  --sv-bg-tertiary:    #242424;
  --sv-border:         #2D2D2D;
  --sv-text:           #F9F9F9;
  --sv-text-muted:     #AAAAAA;
  --sv-text-subtle:    #717171;
  --sv-shadow-sm:      0 1px 3px rgba(0,0,0,.4);
  --sv-shadow-md:      0 4px 16px rgba(0,0,0,.5);
  --sv-shadow-lg:      0 8px 32px rgba(0,0,0,.6);
}

/* ─── Base Reset / Global ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--sv-bg);
  color: var(--sv-text);
  transition: background-color var(--sv-transition), color var(--sv-transition);
  overflow-x: hidden;
}

/* ─── Custom Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--sv-border);
  border-radius: var(--sv-radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--sv-text-subtle); }

/* ─── Layout Shell ──────────────────────────────────────────── */
.sv-app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.sv-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--sv-navbar-h);
  z-index: 100;
  background-color: var(--sv-bg);
  border-bottom: 1px solid var(--sv-border);
  transition: background-color var(--sv-transition), border-color var(--sv-transition);
}

.sv-body-wrap {
  display: flex;
  padding-top: var(--sv-navbar-h);
  min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sv-sidebar {
  position: fixed;
  top: var(--sv-navbar-h);
  left: 0;
  bottom: 0;
  width: var(--sv-sidebar-w);
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--sv-bg);
  border-right: 1px solid var(--sv-border);
  transition: width var(--sv-transition-slow), background-color var(--sv-transition), border-color var(--sv-transition);
  z-index: 90;
}

.sv-sidebar.collapsed { width: var(--sv-sidebar-w-sm); }

.sv-sidebar-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-radius: var(--sv-radius-md);
  margin: 2px 8px;
  color: var(--sv-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--sv-transition), color var(--sv-transition);
}

.sv-sidebar-link:hover {
  background-color: var(--sv-bg-tertiary);
}

.sv-sidebar-link.active {
  background-color: var(--sv-bg-tertiary);
  color: var(--sv-primary);
  font-weight: 600;
}

.sv-sidebar-link .link-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.sv-sidebar-link .link-label {
  transition: opacity var(--sv-transition), width var(--sv-transition-slow);
  overflow: hidden;
}

.sv-sidebar.collapsed .link-label {
  opacity: 0;
  width: 0;
}

.sv-sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sv-text-subtle);
  padding: 16px 24px 4px;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--sv-transition-slow);
}

.sv-sidebar.collapsed .sv-sidebar-section-title { opacity: 0; }

/* ─── Main Content ──────────────────────────────────────────── */
.sv-main {
  margin-left: var(--sv-sidebar-w);
  width: calc(100% - var(--sv-sidebar-w));
  padding: 24px;
  transition: margin-left var(--sv-transition-slow), width var(--sv-transition-slow);
}

.sv-main.sidebar-collapsed {
  margin-left: var(--sv-sidebar-w-sm);
  width: calc(100% - var(--sv-sidebar-w-sm));
}

/* ─── Video Cards ───────────────────────────────────────────── */
.sv-video-card {
  cursor: pointer;
  border-radius: var(--sv-radius-md);
  overflow: hidden;
  transition: transform var(--sv-transition);
}

.sv-video-card:hover { transform: translateY(-2px); }

.sv-thumbnail-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  background-color: var(--sv-bg-tertiary);
  border-radius: var(--sv-radius-md);
  overflow: hidden;
}

.sv-thumbnail-wrap img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--sv-transition-slow);
}

.sv-video-card:hover .sv-thumbnail-wrap img { transform: scale(1.04); }

.sv-duration-badge {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,.85);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.sv-video-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 3px;
  background: var(--sv-primary);
  border-radius: 0 0 2px 2px;
}

.sv-video-info { padding: 10px 0 4px; display: flex; gap: 10px; }

.sv-channel-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.sv-video-meta { flex: 1; min-width: 0; }

.sv-video-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--sv-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}

.sv-video-channel {
  font-size: 12px;
  color: var(--sv-text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}

.sv-verified-badge {
  width: 14px;
  height: 14px;
  fill: var(--sv-text-muted);
  flex-shrink: 0;
}

.sv-video-stats {
  font-size: 12px;
  color: var(--sv-text-muted);
  margin-top: 2px;
}

/* ─── Horizontal Scroll Row ─────────────────────────────────── */
.sv-scroll-row {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.sv-scroll-row::-webkit-scrollbar { height: 0; }

.sv-scroll-row > * { scroll-snap-align: start; flex-shrink: 0; }

/* ─── Category Chips ────────────────────────────────────────── */
.sv-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--sv-radius-full);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid var(--sv-border);
  background: var(--sv-bg);
  color: var(--sv-text);
  white-space: nowrap;
  transition: all var(--sv-transition);
  text-decoration: none;
}

.sv-chip:hover {
  background: var(--sv-bg-tertiary);
  border-color: var(--sv-text-subtle);
}

.sv-chip.active {
  background: var(--sv-text);
  color: var(--sv-bg);
  border-color: var(--sv-text);
}

.dark .sv-chip.active {
  background: var(--sv-text);
  color: var(--sv-bg);
}

/* ─── Search Bar ────────────────────────────────────────────── */
.sv-search-wrap {
  position: relative;
  flex: 1;
  max-width: 580px;
}

.sv-search-input {
  width: 100%;
  height: 40px;
  padding: 0 48px 0 16px;
  border: 1.5px solid var(--sv-border);
  border-radius: var(--sv-radius-full);
  background: var(--sv-bg-secondary);
  color: var(--sv-text);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--sv-transition), box-shadow var(--sv-transition);
  outline: none;
}

.sv-search-input:focus {
  border-color: var(--sv-primary);
  box-shadow: 0 0 0 3px rgba(239,68,68,.15);
  background: var(--sv-bg);
}

.sv-search-input::placeholder { color: var(--sv-text-subtle); }

.sv-search-btn {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: var(--sv-bg-tertiary);
  border-radius: 0 var(--sv-radius-full) var(--sv-radius-full) 0;
  border-left: 1.5px solid var(--sv-border);
  cursor: pointer;
  color: var(--sv-text-muted);
  transition: background-color var(--sv-transition);
}

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

/* ─── Buttons ───────────────────────────────────────────────── */
.sv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--sv-radius-full);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all var(--sv-transition);
  text-decoration: none;
  white-space: nowrap;
}

.sv-btn-primary {
  background: var(--sv-primary);
  color: #fff;
}
.sv-btn-primary:hover {
  background: var(--sv-primary-dark);
  box-shadow: var(--sv-shadow-glow);
  transform: translateY(-1px);
}

.sv-btn-ghost {
  background: var(--sv-bg-tertiary);
  color: var(--sv-text);
  border: 1.5px solid var(--sv-border);
}
.sv-btn-ghost:hover {
  background: var(--sv-border);
  border-color: var(--sv-text-subtle);
}

.sv-btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  background: var(--sv-bg-tertiary);
  color: var(--sv-text);
  border: 1.5px solid var(--sv-border);
}
.sv-btn-icon:hover { background: var(--sv-border); }

/* ─── Section Headers ───────────────────────────────────────── */
.sv-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.sv-section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--sv-text);
  font-family: 'Plus Jakarta Sans', sans-serif;
}

.sv-section-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--sv-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--sv-transition);
}
.sv-section-link:hover { gap: 8px; }

/* ─── Avatar ────────────────────────────────────────────────── */
.sv-avatar {
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

/* ─── Badge ─────────────────────────────────────────────────── */
.sv-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--sv-radius-full);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.sv-badge-red { background: rgba(239,68,68,.12); color: var(--sv-primary); }
.sv-badge-green { background: rgba(34,197,94,.12); color: #16a34a; }
.sv-badge-blue { background: rgba(59,130,246,.12); color: #2563eb; }
.sv-badge-live {
  background: var(--sv-primary);
  color: #fff;
  animation: sv-pulse 2s infinite;
}

/* ─── Live Indicator ────────────────────────────────────────── */
.sv-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sv-primary);
  display: inline-block;
  animation: sv-pulse 2s infinite;
}

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

/* ─── Video Player Page ─────────────────────────────────────── */
.sv-player-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
  border-radius: var(--sv-radius-lg);
  overflow: hidden;
}

.sv-player-embed {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.sv-player-thumbnail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.sv-player-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.3);
  cursor: pointer;
  transition: background var(--sv-transition);
}
.sv-player-overlay:hover { background: rgba(0,0,0,.45); }

.sv-play-btn-large {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(255,255,255,.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--sv-transition), background var(--sv-transition);
}
.sv-play-btn-large:hover { transform: scale(1.1); background: #fff; }

/* ─── Like / Dislike Bar ────────────────────────────────────── */
.sv-action-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.sv-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: var(--sv-radius-full);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  background: var(--sv-bg-tertiary);
  color: var(--sv-text);
  font-family: inherit;
  transition: background-color var(--sv-transition);
}
.sv-action-btn:hover { background: var(--sv-border); }
.sv-action-btn.liked { background: rgba(239,68,68,.12); color: var(--sv-primary); }

/* ─── Description Box ───────────────────────────────────────── */
.sv-description-box {
  background: var(--sv-bg-secondary);
  border-radius: var(--sv-radius-md);
  padding: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sv-text);
  border: 1px solid var(--sv-border);
}

/* ─── Comment ───────────────────────────────────────────────── */
.sv-comment {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--sv-border);
}
.sv-comment:last-child { border-bottom: none; }

.sv-comment-body { flex: 1; }
.sv-comment-author {
  font-size: 13px;
  font-weight: 600;
  color: var(--sv-text);
  margin-bottom: 4px;
}
.sv-comment-text {
  font-size: 14px;
  color: var(--sv-text);
  line-height: 1.6;
}
.sv-comment-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}
.sv-comment-action-btn {
  font-size: 12px;
  font-weight: 500;
  color: var(--sv-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
  font-family: inherit;
  transition: color var(--sv-transition);
}
.sv-comment-action-btn:hover { color: var(--sv-text); }

/* ─── Channel Page ──────────────────────────────────────────── */
.sv-channel-banner {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--sv-radius-lg);
  background: var(--sv-bg-tertiary);
}

.sv-channel-header-card {
  background: var(--sv-bg);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ─── Tabs ───────────────────────────────────────────────────── */
.sv-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--sv-border);
  margin-bottom: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.sv-tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--sv-text-muted);
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  position: relative;
  transition: color var(--sv-transition);
  text-decoration: none;
  white-space: nowrap;
}

.sv-tabs::-webkit-scrollbar { display: none; }

.sv-tab::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: var(--sv-primary);
  transform: scaleX(0);
  transition: transform var(--sv-transition);
}

.sv-tab:hover { color: var(--sv-text); }
.sv-tab.active { color: var(--sv-primary); font-weight: 600; }
.sv-tab.active::after { transform: scaleX(1); }

/* ─── Toast Notification ────────────────────────────────────── */
#sv-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.sv-toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--sv-bg-secondary);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius-md);
  box-shadow: var(--sv-shadow-lg);
  font-size: 14px;
  font-weight: 500;
  color: var(--sv-text);
  min-width: 260px;
  pointer-events: all;
  animation: sv-toast-in 0.3s ease forwards;
}

.sv-toast.hiding { animation: sv-toast-out 0.3s ease forwards; }

.sv-toast-icon { width: 18px; height: 18px; flex-shrink: 0; }
.sv-toast-success .sv-toast-icon { color: #22c55e; }
.sv-toast-error .sv-toast-icon { color: var(--sv-primary); }
.sv-toast-info .sv-toast-icon { color: #3b82f6; }

@keyframes sv-toast-in {
  from { opacity: 0; transform: translateY(12px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes sv-toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(12px) scale(.97); }
}

/* ─── Skeleton Loading ──────────────────────────────────────── */
.sv-skeleton {
  background: linear-gradient(90deg,
    var(--sv-bg-tertiary) 25%,
    var(--sv-border) 50%,
    var(--sv-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: sv-shimmer 1.6s infinite;
  border-radius: var(--sv-radius-sm);
}

@keyframes sv-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ─── Hero Banner ───────────────────────────────────────────── */
.sv-hero-banner {
  position: relative;
  border-radius: var(--sv-radius-xl);
  overflow: hidden;
  height: 380px;
  background: var(--sv-bg-tertiary);
}

.sv-hero-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sv-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0,0,0,.85) 0%,
    rgba(0,0,0,.5) 50%,
    rgba(0,0,0,.1) 100%
  );
}

.sv-hero-content {
  position: absolute;
  bottom: 0; left: 0;
  padding: 40px;
  max-width: 520px;
}

/* ─── Dropdown Menu ─────────────────────────────────────────── */
.sv-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--sv-bg);
  border: 1px solid var(--sv-border);
  border-radius: var(--sv-radius-md);
  box-shadow: var(--sv-shadow-lg);
  z-index: 200;
  overflow: hidden;
  animation: sv-dropdown-in .15s ease;
}

@keyframes sv-dropdown-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sv-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--sv-text);
  cursor: pointer;
  transition: background-color var(--sv-transition);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.sv-dropdown-item:hover { background: var(--sv-bg-tertiary); }
.sv-dropdown-item svg { width: 16px; height: 16px; color: var(--sv-text-muted); flex-shrink: 0; }
.sv-dropdown-divider { height: 1px; background: var(--sv-border); margin: 4px 0; }

/* ─── Trending List Item ────────────────────────────────────── */
.sv-list-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid var(--sv-border);
  cursor: pointer;
  transition: opacity var(--sv-transition);
}
.sv-list-item:last-child { border-bottom: none; }
.sv-list-item:hover { opacity: 0.8; }

.sv-list-thumb {
  width: 168px;
  height: 94px;
  border-radius: var(--sv-radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--sv-bg-tertiary);
}

/* ─── Search Results ────────────────────────────────────────── */
.sv-search-result-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--sv-border);
  cursor: pointer;
}
.sv-search-result-item:last-child { border-bottom: none; }

.sv-search-thumb {
  width: 246px;
  height: 138px;
  border-radius: var(--sv-radius-md);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--sv-bg-tertiary);
}

/* ─── Empty State ───────────────────────────────────────────── */
.sv-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
  gap: 16px;
}

.sv-empty-icon {
  width: 72px;
  height: 72px;
  color: var(--sv-text-subtle);
}

/* ─── Subscribe Button ──────────────────────────────────────── */
.sv-subscribe-btn {
  padding: 10px 22px;
  border-radius: var(--sv-radius-full);
  background: var(--sv-text);
  color: var(--sv-bg);
  font-size: 14px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: opacity var(--sv-transition), transform var(--sv-transition);
}
.sv-subscribe-btn:hover { opacity: 0.85; transform: scale(1.02); }
.sv-subscribe-btn.subscribed {
  background: var(--sv-bg-tertiary);
  color: var(--sv-text);
  border: 1.5px solid var(--sv-border);
}

/* ─── Footer ─────────────────────────────────────────────────── */
.sv-footer {
  background: var(--sv-bg-secondary);
  border-top: 1px solid var(--sv-border);
  margin-left: var(--sv-sidebar-w);
  width: calc(100% - var(--sv-sidebar-w));
  transition: margin-left var(--sv-transition-slow), width var(--sv-transition-slow);
}

.sv-footer.sidebar-collapsed {
  margin-left: var(--sv-sidebar-w-sm);
  width: calc(100% - var(--sv-sidebar-w-sm));
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .sv-sidebar { width: var(--sv-sidebar-w-sm); }
  .sv-sidebar .link-label,
  .sv-sidebar .sv-sidebar-section-title { opacity: 0; width: 0; overflow: hidden; }
  .sv-main { margin-left: var(--sv-sidebar-w-sm); width: calc(100% - var(--sv-sidebar-w-sm)); }
  .sv-footer { margin-left: var(--sv-sidebar-w-sm); width: calc(100% - var(--sv-sidebar-w-sm)); }
}

@media (max-width: 768px) {
  /* Sidebar is always off-screen on mobile — collapsed class must not shrink it */
  .sv-sidebar,
  .sv-sidebar.collapsed {
    transform: translateX(-100%);
    width: var(--sv-sidebar-w);
  }
  .sv-sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: var(--sv-shadow-lg);
  }
  /* Show full labels when drawer is open, regardless of collapsed class */
  .sv-sidebar.mobile-open .link-label,
  .sv-sidebar.collapsed.mobile-open .link-label {
    opacity: 1;
    width: auto;
    overflow: visible;
  }
  .sv-sidebar.mobile-open .sv-sidebar-section-title,
  .sv-sidebar.collapsed.mobile-open .sv-sidebar-section-title {
    opacity: 1;
  }
  /* Remove all sidebar-driven margins on mobile */
  .sv-main,
  .sv-main.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
    padding: 16px;
  }
  .sv-footer,
  .sv-footer.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
  }
  .sv-search-wrap { max-width: 100%; }
  .sv-hero-banner { height: 220px; }
  .sv-hero-content { padding: 20px; }
  .sv-search-result-item { flex-direction: column; }
  .sv-search-thumb { width: 100%; height: auto; aspect-ratio: 16/9; }
}

@media (max-width: 480px) {
  .sv-action-bar { gap: 6px; }
  .sv-action-btn { padding: 7px 12px; font-size: 13px; }
  .sv-channel-header-card { flex-direction: column; text-align: center; }
}

/* ─── Mobile Overlay ─────────────────────────────────────────── */
.sv-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 89;
}
.sv-sidebar-overlay.active { display: block; }

/* ─── Video Grid Layouts ─────────────────────────────────────── */
.sv-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.sv-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sv-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

@media (max-width: 1280px) { .sv-grid-4 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 1024px) { .sv-grid-4 { grid-template-columns: repeat(2, 1fr); } .sv-grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .sv-grid-4, .sv-grid-3, .sv-grid-2 { grid-template-columns: repeat(2, 1fr); gap: 12px; } }
@media (max-width: 400px) { .sv-grid-4, .sv-grid-3, .sv-grid-2 { grid-template-columns: 1fr; } }

/* ─── Notification Badge ─────────────────────────────────────── */
.sv-notif-badge {
  position: absolute;
  top: -2px; right: -2px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--sv-primary);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--sv-bg);
}

/* ─── Progress Bar (page load) ───────────────────────────────── */
#sv-progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: var(--sv-gradient);
  z-index: 9999;
  transition: width 0.3s ease;
  border-radius: 0 3px 3px 0;
}