/* YouTube Studio Desktop & Mobile Application CSS */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-primary, #F9F9F9);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-primary, #0F0F0F);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* Main App Shell Structure */
.app-shell {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary, #F9F9F9);
  position: relative;
}

/* Header */
.app-header {
  height: var(--header-height, 56px);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-surface, #FFFFFF);
  border-bottom: 1px solid var(--border-color, #E5E5E5);
  position: sticky;
  top: 0;
  z-index: var(--z-header, 100);
}

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

.menu-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-primary, #0F0F0F);
}

.menu-toggle-btn:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 6px;
}

.yt-play-icon {
  display: block;
  flex-shrink: 0;
}

.header-brand-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary, #0F0F0F);
  letter-spacing: -0.4px;
}

/* Header Search Container */
.header-search-container {
  flex: 1;
  max-width: 640px;
  margin: 0 24px;
  position: relative;
  display: flex;
  align-items: center;
}

.header-search-input {
  width: 100%;
  height: 40px;
  padding: 0 36px 0 40px;
  border-radius: 20px;
  border: 1px solid var(--border-color, #CCCCCC);
  background-color: var(--bg-primary, #F9F9F9);
  font-size: 14px;
  color: var(--text-primary, #0F0F0F);
  outline: none;
  transition: all var(--transition-fast, 0.15s ease);
}

.header-search-input:focus {
  border-color: var(--yt-blue, #065FD4);
  background-color: var(--bg-surface, #FFFFFF);
  box-shadow: 0 0 0 1px var(--yt-blue, #065FD4);
}

.search-input-icon {
  position: absolute;
  left: 12px;
  color: var(--text-secondary, #606060);
  pointer-events: none;
}

.search-clear-btn {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  font-size: 14px;
  color: var(--text-secondary, #606060);
  cursor: pointer;
}

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

/* Create Button */
.btn-create {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  border-radius: 18px;
  border: 1px solid var(--border-color, #CCCCCC);
  background-color: var(--bg-surface, #FFFFFF);
  color: var(--text-primary, #0F0F0F);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast, 0.15s ease);
}

.btn-create:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-primary, #0F0F0F);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast, 0.15s ease);
}

.icon-btn:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

.mobile-search-btn {
  display: none;
}

.avatar-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border-color, #E5E5E5);
  cursor: pointer;
}

/* Profile Dropdown Menu */
.profile-menu-container {
  position: relative;
}

.profile-dropdown-menu {
  position: absolute;
  top: 44px;
  right: 0;
  width: 260px;
  background: var(--bg-surface, #FFFFFF);
  border: 1px solid var(--border-color, #E5E5E5);
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-lg, 0 12px 32px rgba(0,0,0,0.12));
  z-index: var(--z-modal, 300);
  overflow: hidden;
}

.dropdown-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
}

.avatar-circle-sm {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.dropdown-user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #0F0F0F);
}

.user-handle {
  font-size: 12px;
  color: var(--text-secondary, #606060);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-color, #E5E5E5);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  font-size: 13.5px;
  color: var(--text-primary, #0F0F0F);
  text-decoration: none;
  transition: background-color var(--transition-fast, 0.15s ease);
}

.dropdown-item:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

/* App Body Structure */
.app-body {
  display: flex;
  flex: 1;
  position: relative;
  min-height: calc(100vh - var(--header-height, 56px));
}

/* Desktop Sidebar */
.app-sidebar {
  width: var(--sidebar-width, 240px);
  background-color: var(--bg-surface, #FFFFFF);
  border-right: 1px solid var(--border-color, #E5E5E5);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition-normal, 0.25s ease);
  position: sticky;
  top: var(--header-height, 56px);
  height: calc(100vh - var(--header-height, 56px));
  z-index: var(--z-sidebar, 90);
}

.app-sidebar.collapsed {
  width: var(--sidebar-collapsed-width, 72px);
}

.app-sidebar.collapsed .sidebar-label {
  display: none;
}

.sidebar-nav {
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 44px;
  padding: 0 16px;
  border-radius: var(--radius-sm, 8px);
  border: none;
  background: transparent;
  color: var(--text-secondary, #606060);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: background-color var(--transition-fast, 0.15s ease), color var(--transition-fast, 0.15s ease);
}

.sidebar-item:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
  color: var(--text-primary, #0F0F0F);
}

.sidebar-item.active {
  background-color: #FCE8E6;
  color: var(--yt-red, #FF0000);
  font-weight: 600;
}

.sidebar-item.active svg {
  color: var(--yt-red, #FF0000);
  fill: var(--yt-red, #FF0000);
}

/* App Viewport Container */
.app-viewport {
  flex: 1;
  padding: 24px 32px;
  max-width: var(--content-max-width, 1440px);
  margin: 0 auto;
  width: 100%;
  overflow-y: auto;
}

/* Bottom Nav (Hidden on Desktop) */
.bottom-nav {
  display: none;
}

.sidebar-backdrop {
  display: none;
}


/* 3. Channel Identity Row */
.channel-profile-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-top: 4px;
}

.profile-avatar-lg {
  width: 82px;
  height: 82px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.profile-details {
  display: flex;
  flex-direction: column;
}

.channel-name-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
}

.om-badge {
  background-color: var(--purple-badge);
  color: #FFFFFF;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.subscriber-count {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-top: 2px;
}

.subscriber-label {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* 4. Section Headers */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.section-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.section-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.view-all-btn {
  background: #FFFFFF;
  border: 1px solid #E0E0E0;
  padding: 5px 14px;
  border-radius: 18px;
  font-size: 12px;
  font-weight: 600;
  color: #0F0F0F;
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-all-btn:hover, .view-all-btn.active {
  background: #0F0F0F;
  color: #FFFFFF;
  border-color: #0F0F0F;
}

/* 5. Channel Analytics Cards */
.analytics-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.analytics-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 86px;
}

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
}

/* 6. Video Analytics Cards */
.video-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.video-main-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.video-thumb-box {
  width: 76px;
  height: 62px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background-color: #000000;
  position: relative;
}

.video-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.video-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-time-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Metrics Icon Bar */
.video-stats-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-divider);
  padding-top: 12px;
  font-size: 14px;
  color: var(--text-primary);
}

.stats-group {
  display: flex;
  align-items: center;
  gap: 20px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.chevron-btn {
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Expandable Section */
.expandable-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 2px;
}

.expandable-details.collapsed {
  display: none;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text-primary);
}

.detail-label {
  color: var(--text-secondary);
}

.detail-value {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-check-green {
  color: var(--green-success);
  display: inline-flex;
}

/* 7. Content Tab Components */
.filter-chips-wrapper {
  position: relative;
  margin-bottom: 16px;
}

.filter-chips-row {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  overflow-y: hidden;
  margin: 0 -16px;
  padding: 0 16px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  scroll-behavior: smooth;
}

.filter-chips-row::-webkit-scrollbar {
  display: none;
}

.chip-btn {
  flex: 0 0 auto;
  height: 32px;
  background: #F2F2F2;
  border: none;
  padding: 0 10px 0 12px;
  border-radius: 8px;
  font-family: 'Montserrat', 'Roboto', sans-serif;
  font-size: 16.4px;
  font-weight: 500;
  letter-spacing: 0;
  color: #0F0F0F;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}

.chip-btn svg {
  flex-shrink: 0;
  display: block;
}

.chip-btn:active {
  background: #E5E5E5;
}

.chip-btn.active {
  background: #0F0F0F;
  color: #FFFFFF;
}

.chip-btn.icon-only {
  width: 41px;
  padding: 0;
  justify-content: center;
}

/* Filter Dropdown Popup Menu */
.filter-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  background: #FFFFFF;
  border: 1px solid #E5E5E5;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 100;
  min-width: 170px;
  padding: 6px 0;
  display: none;
}

.filter-dropdown-menu.show {
  display: block;
}

.dropdown-item {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: #0F0F0F;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.12s ease;
}

.dropdown-item:hover {
  background: #F5F5F5;
}

.dropdown-item.selected {
  font-weight: 700;
  color: #0F0F0F;
}

/* Horizontal Scroll Lists */
.horizontal-scroll-list {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 16px;
  margin-bottom: 24px;
  scrollbar-width: none;
}

.horizontal-scroll-list::-webkit-scrollbar {
  display: none;
}

.expanded-vertical-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.expanded-shorts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.content-video-card {
  width: 175px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.content-thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 12px;
  overflow: hidden;
  background-color: #000000;
}

.content-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.duration-badge {
  position: absolute;
  bottom: 4px;
  right: 4px;
  background: rgba(0, 0, 0, 0.85);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 4px;
}

.content-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 4px;
}

.content-video-title {
  font-size: 13px;
  font-weight: 600;
  color: #0F0F0F;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.three-dots-btn {
  color: #606060;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  padding: 0 2px;
}

.content-stats-sub {
  font-size: 12px;
  color: #606060;
  display: flex;
  gap: 10px;
  align-items: center;
}

.content-stats-sub > span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
}

.short-card {
  width: 128px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.short-thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 9/16;
  border-radius: 12px;
  overflow: hidden;
  background-color: #000000;
}

.short-title {
  font-size: 13px;
  font-weight: 600;
  color: #0F0F0F;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-card {
  width: 180px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.playlist-thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 12px;
  overflow: hidden;
  background-color: #000000;
}

.playlist-overlay-badge {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 42%;
  background: rgba(0, 0, 0, 0.85);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  gap: 4px;
}

/* 8. Analytics Screen Styles */
.analytics-subnav-tabs {
  display: flex;
  gap: 20px;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 4px;
  margin-bottom: 16px;
  background: #FFFFFF;
  margin-left: -16px;
  margin-right: -16px;
  padding-left: 20px;
  padding-right: 20px;
}

.analytics-tab-btn {
  background: none;
  border: none;
  padding: 10px 0;
  font-size: 14.5px;
  font-weight: 500;
  color: #606060;
  cursor: pointer;
  position: relative;
}

.analytics-tab-btn.active {
  color: #0F0F0F;
  font-weight: 700;
}

.analytics-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2.5px;
  background-color: #0F0F0F;
  border-radius: 2px 2px 0 0;
}

.notice-banner-card {
  background-color: #F2F2F2;
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notice-header {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.notice-icon {
  width: 20px;
  height: 20px;
  border: 1.8px solid #0F0F0F;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.notice-text {
  font-size: 13.5px;
  color: #0F0F0F;
  line-height: 1.35;
  flex: 1;
}

.notice-close-btn {
  color: #0F0F0F;
  font-size: 16px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0 4px;
  line-height: 1;
}

.notice-learn-btn {
  background-color: #FFFFFF;
  border: 1px solid #E0E0E0;
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: #0F0F0F;
  text-align: center;
  cursor: pointer;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  margin-bottom: 24px;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #E0E0E0;
}

.dot.active {
  background-color: #0F0F0F;
}

.analytics-metric-chart-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 20px;
  min-width: 280px;
  width: 82%;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.02);
}

.discovery-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 18px 20px;
  min-width: 260px;
  width: 80%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 4px rgba(0,0,0,0.02);
}

/* 9. Earn Tab Styles (Matching Earn Tab Screenshot) */
.earn-tab-container {
  padding: 4px 0 24px 0;
}

.earn-main-title {
  font-size: 24px;
  font-weight: 800;
  color: #0F0F0F;
  margin-bottom: 14px;
  letter-spacing: -0.4px;
}

.next-milestone-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.next-milestone-label {
  font-size: 13.5px;
  font-weight: 500;
  color: #606060;
}

.lock-icon-badge {
  background: #EBEBEB;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.earn-sub-title {
  font-size: 19px;
  font-weight: 700;
  color: #0F0F0F;
  margin-top: 8px;
  margin-bottom: 6px;
}

.earn-description {
  font-size: 13.5px;
  color: #606060;
  line-height: 1.45;
  margin-bottom: 20px;
}

.earn-cards-scroll {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 12px;
  margin-bottom: 4px;
  scrollbar-width: none;
  scroll-snap-type: x mandatory;
}

.earn-cards-scroll::-webkit-scrollbar {
  display: none;
}

.earn-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 24px 20px;
  min-width: 235px;
  width: 72%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
  scroll-snap-align: start;
}

.earn-card-illustration {
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.earn-card-title {
  font-size: 18px;
  font-weight: 700;
  color: #0F0F0F;
  margin-bottom: 8px;
}

.earn-card-desc {
  font-size: 13.5px;
  color: #606060;
  line-height: 1.4;
}

.earn-eligibility-title {
  font-size: 20px;
  font-weight: 700;
  color: #0F0F0F;
  margin-top: 24px;
  margin-bottom: 14px;
}

.earn-info-banner {
  background-color: #F8F9FA;
  border-radius: 16px;
  padding: 16px 18px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.earn-info-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.earn-info-icon {
  color: #0F0F0F;
  display: flex;
  align-items: center;
  justify-content: center;
}

.earn-info-text {
  font-size: 14.5px;
  font-weight: 700;
  color: #0F0F0F;
}

.earn-info-link {
  font-size: 13.5px;
  font-weight: 600;
  color: #0F0F0F;
  text-decoration: underline;
  margin-left: 26px;
  cursor: pointer;
}

.earn-progress-section {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 20px;
}

.earn-progress-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.earn-progress-track {
  width: 100%;
  height: 6px;
  background-color: #ECECEC;
  border-radius: 3px;
  overflow: hidden;
}

.earn-progress-fill {
  height: 100%;
  background-color: #065FD4;
  border-radius: 3px;
  transition: width 0.4s ease-in-out;
}

.earn-progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.earn-progress-current {
  font-size: 14.5px;
  font-weight: 700;
  color: #0F0F0F;
}

.earn-progress-subtext {
  font-size: 12.5px;
  color: #606060;
  margin-top: 2px;
}

.earn-progress-target {
  font-size: 14.5px;
  font-weight: 500;
  color: #888888;
}

/* Dashboard Comments Cards (Matching Reference Image 1) */
.dashboard-comments-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.dashboard-comment-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.dashboard-comment-card:active {
  transform: scale(0.99);
}

.dashboard-comment-video-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid #F0F0F0;
  margin-bottom: 12px;
}

.dashboard-comment-video-title {
  font-size: 13.5px;
  font-weight: 600;
  color: #0F0F0F;
  line-height: 1.35;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.dashboard-comment-video-thumb {
  width: 44px;
  height: 54px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.dashboard-comment-user-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.dashboard-comment-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

.dashboard-comment-content {
  flex: 1;
}

.dashboard-comment-author-time {
  font-size: 13px;
  color: #606060;
  margin-bottom: 4px;
}

.dashboard-comment-text {
  font-size: 14px;
  color: #0F0F0F;
  line-height: 1.35;
}

/* Top Recent Videos Subpage (Matching Reference Image 2) */
.top-recent-videos-page {
  padding: 4px 0 24px 0;
}

.subpage-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-top: 4px;
}

.subpage-back-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0F0F0F;
  border-radius: 50%;
}

.subpage-back-btn:hover {
  background-color: #F0F0F0;
}

.subpage-title {
  font-size: 20px;
  font-weight: 800;
  color: #0F0F0F;
  letter-spacing: -0.3px;
}

.period-header-section {
  margin-bottom: 24px;
}

.period-title {
  font-size: 22px;
  font-weight: 800;
  color: #0F0F0F;
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}

.period-subtitle {
  font-size: 13px;
  color: #606060;
  line-height: 1.4;
}

.top-videos-list {
  display: flex;
  flex-direction: column;
}

.top-video-row {
  display: flex;
  align-items: center;
  padding: 10px 8px;
  border-radius: 10px;
  transition: background 0.15s ease;
}

.top-video-row.active-highlight {
  background-color: #F2F2F2;
}

.rank-num {
  font-size: 14px;
  font-weight: 500;
  color: #606060;
  width: 24px;
  flex-shrink: 0;
  text-align: center;
}

.top-video-thumb {
  width: 44px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  margin: 0 10px;
}

.top-video-thumb.placeholder {
  background-color: #EBEBEB;
}

.top-video-title {
  font-size: 13.5px;
  color: #0F0F0F;
  line-height: 1.35;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.top-video-views {
  font-size: 14px;
  font-weight: 500;
  color: #0F0F0F;
  min-width: 28px;
  text-align: right;
  flex-shrink: 0;
}

/* Video Details & Edit Video Subpages (Matching Reference Images 1, 2 & 3) */
.video-details-subpage, .edit-video-subpage {
  padding: 4px 0 24px 0;
}

.subpage-action-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-top: 4px;
}

.subpage-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-action-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0F0F0F;
  border-radius: 50%;
}

.header-action-icon-btn:hover {
  background-color: #F0F0F0;
}

.details-banner-thumb-container, .edit-banner-thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  background-color: #000000;
  margin-bottom: 16px;
}

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

.banner-duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.85);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.thumb-edit-overlay-btn {
  position: absolute;
  top: 10px;
  left: 10px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  backdrop-filter: blur(4px);
  transition: transform 0.1s ease;
}

.thumb-edit-overlay-btn:active {
  transform: scale(0.95);
}

.details-video-title {
  font-size: 18px;
  font-weight: 800;
  color: #0F0F0F;
  line-height: 1.35;
  margin-bottom: 6px;
  letter-spacing: -0.2px;
}

.details-published-meta {
  font-size: 13px;
  color: #606060;
  margin-bottom: 16px;
}

.details-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 16px 18px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.details-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.card-row-label {
  font-size: 14.5px;
  color: #606060;
  font-weight: 500;
}

.card-row-val {
  font-size: 14.5px;
  color: #0F0F0F;
  font-weight: 600;
  display: flex;
  align-items: center;
}

.details-card-divider {
  height: 1px;
  background-color: #F0F0F0;
  margin: 10px 0;
}

.performance-card-title {
  font-size: 18px;
  font-weight: 800;
  color: #0F0F0F;
  margin-bottom: 2px;
}

.performance-time-subtitle {
  font-size: 13px;
  color: #606060;
  margin-bottom: 14px;
}

.performance-metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-top: 1px solid #F0F0F0;
}

.metric-row-label {
  font-size: 14.5px;
  color: #0F0F0F;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.info-circle-btn {
  font-size: 14px;
  color: #606060;
}

.metric-row-val {
  font-size: 14.5px;
  color: #0F0F0F;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.down-arrow-circle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #EBEBEB;
  color: #606060;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

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

.view-all-pill-btn {
  background: #FFFFFF;
  border: 1px solid #E0E0E0;
  border-radius: 18px;
  padding: 4px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: #0F0F0F;
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-all-pill-btn:hover {
  background: #0F0F0F;
  color: #FFFFFF;
  border-color: #0F0F0F;
}

.no-comments-banner-box {
  background-color: #F8F9FA;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  color: #606060;
  font-size: 14px;
}

/* Edit Video Subpage (Matching Reference Image 3) */
.save-pill-btn {
  background-color: #0F0F0F;
  color: #FFFFFF;
  border: none;
  border-radius: 18px;
  padding: 6px 18px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.save-pill-btn:hover {
  opacity: 0.85;
}

.edit-form-container {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 16px 18px;
  margin-top: 12px;
}

.edit-field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.edit-field-label {
  font-size: 12px;
  color: #606060;
  font-weight: 500;
}

.edit-field-input.title-textarea {
  width: 100%;
  border: none;
  outline: none;
  font-size: 15px;
  font-weight: 600;
  color: #0F0F0F;
  font-family: inherit;
  resize: none;
  line-height: 1.35;
  background: transparent;
}

.edit-field-divider {
  height: 1px;
  background-color: #F0F0F0;
  margin: 14px 0;
}

.edit-field-option-row {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  padding: 2px 0;
}

.edit-option-icon {
  flex-shrink: 0;
  color: #0F0F0F;
}

.edit-option-text-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.edit-option-label {
  font-size: 12px;
  color: #606060;
  font-weight: 500;
}

.edit-option-val {
  font-size: 14.5px;
  font-weight: 600;
  color: #0F0F0F;
  line-height: 1.3;
}

/* Nav Item SVG states */
.nav-item .nav-earn-active-svg {
  display: none;
}
.nav-item .nav-earn-inactive-svg {
  display: block;
}
.nav-item.active .nav-earn-active-svg {
  display: block;
}
.nav-item.active .nav-earn-inactive-svg {
  display: none;
}

/* Modal Dialogs */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: var(--z-modal, 300);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
  animation: fadeIn 0.2s ease;
}

.modal-card {
  background-color: var(--bg-surface, #FFFFFF);
  border-radius: var(--radius-lg, 18px);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg, 0 12px 32px rgba(0,0,0,0.12));
  padding: 24px;
}

.modal-card-sm {
  max-width: 400px;
}

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

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary, #0F0F0F);
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-secondary, #606060);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary, #0F0F0F);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-color, #CCCCCC);
  background-color: var(--bg-surface, #FFFFFF);
  font-size: 14px;
  color: var(--text-primary, #0F0F0F);
  outline: none;
  font-family: inherit;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--yt-blue, #065FD4);
  box-shadow: 0 0 0 1px var(--yt-blue, #065FD4);
}

.thumb-upload-dropzone {
  border: 2px dashed var(--border-color, #CCCCCC);
  border-radius: var(--radius-md, 12px);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-primary, #F9F9F9);
  transition: border-color 0.15s ease;
}

.thumb-upload-dropzone:hover {
  border-color: var(--yt-blue, #065FD4);
}

.thumb-preview-img {
  width: 120px;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 6px;
}

.dropzone-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropzone-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--yt-blue, #065FD4);
}

.dropzone-sub {
  font-size: 11px;
  color: var(--text-secondary, #606060);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.btn-primary {
  background-color: var(--yt-blue, #065FD4);
  color: #FFFFFF;
  border: none;
  border-radius: 18px;
  padding: 8px 20px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--yt-blue-hover, #0056B3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary, #0F0F0F);
  border: 1px solid var(--border-color, #CCCCCC);
  border-radius: 18px;
  padding: 8px 18px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover, #F2F2F2);
}

.btn-danger {
  background-color: var(--red-error, #DC2626);
  color: #FFFFFF;
  border: none;
  border-radius: 18px;
  padding: 8px 20px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
}

.btn-danger:hover {
  opacity: 0.9;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: var(--z-toast, 400);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background-color: #0F0F0F;
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-sm, 8px);
  font-size: 13.5px;
  font-weight: 500;
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.15));
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.25s ease;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* RESPONSIVE MEDIA QUERIES FOR TABLET & MOBILE */
@media (max-width: 768px) {
  .header-search-container {
    display: none;
  }
  
  .mobile-search-btn {
    display: flex;
  }
  
  .btn-create-label {
    display: none;
  }
  
  .btn-create {
    padding: 0 10px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    justify-content: center;
  }
  
  .app-sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 260px !important;
    height: 100vh;
    z-index: var(--z-overlay, 200);
    box-shadow: var(--shadow-lg, 0 12px 32px rgba(0,0,0,0.15));
    transition: left var(--transition-normal, 0.25s ease);
  }

  .app-sidebar.drawer-open {
    left: 0;
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 180;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  .sidebar-backdrop.active {
    opacity: 1;
    pointer-events: auto;
  }

  .app-viewport {
    padding: 16px 16px 80px 16px;
  }

  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height, 60px);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color, #E5E5E5);
    z-index: var(--z-header, 100);
  }

  .toast-container {
    bottom: 72px;
    right: 16px;
    left: 16px;
  }
}

@media (max-width: 480px) {
  
  .channel-profile-row {
    gap: 12px;
  }

  .profile-avatar-lg {
    width: 64px;
    height: 64px;
  }

  .subscriber-count {
    font-size: 22px;
  }
}

@media (max-width: 320px) {
  .app-header {
    padding: 0 8px;
  }

  .header-actions {
    gap: 6px;
  }
  
  .app-viewport {
    padding: 12px 10px 76px 10px;
  }
}