/* ==========================================================================
   YouTube Thumbnail Downloader & Grabber (Tool 31) - GuinRank V7 Canonical Suite
   Standard: Canonical YouTube Suite Standard (_agent/YOUTUBE.md)
   Architecture: Zero-Regression Engineering Protocol
   ========================================================================== */

html.modal-open,
body.modal-open {
    overflow: hidden !important;
    height: 100vh !important;
}

.thumbnail-downloader-container {
    width: 100%;
    max-width: 1380px;
    margin: 0 auto;
    padding: 24px 20px 80px;
    font-family: inherit;
    color: var(--text-main, #1e293b);
    position: relative;
    transition: max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.thumbnail-downloader-container.is-wide-mode {
    max-width: 100% !important;
    width: 100% !important;
    padding-left: 32px;
    padding-right: 32px;
}

.thumbnail-downloader-container.is-wide-mode .console-features,
.thumbnail-downloader-container.is-wide-mode .unified-search-container,
.thumbnail-downloader-container.is-wide-mode .thd-workspace-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
}

#thumbnail-downloader-app svg.lucide,
.thumbnail-downloader-container svg.lucide {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.tool-loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 360px;
}

.tool-content-state.none {
    display: none;
}

.tool-content-state.show {
    display: block;
    animation: thdFadeIn 0.25s ease;
}

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

/* Ambient Subtle Background Glow */
.cpg-ambient-glow {
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 650px;
    height: 260px;
    background: radial-gradient(circle, var(--primary-light, rgba(249, 115, 22, 0.12)) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    opacity: 0.8;
}

/* --- 1. Top Compliance Micro Badge --- */
.hero-compliance-row {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
    position: relative;
    z-index: 10;
}

.yt-compliance-micro-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.yt-compliance-micro-pill:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.yt-compliance-micro-pill i,
.yt-compliance-micro-pill svg {
    width: 14px !important;
    height: 14px !important;
    color: var(--primary-color);
}

.micro-info-icon {
    opacity: 0.6;
}

/* --- 2. Canonical Hero Header --- */
.console-hero {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 32px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--primary-light, rgba(249, 115, 22, 0.1));
    border: 1px solid var(--primary-color);
    border-radius: 999px;
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 800;
    margin-bottom: 16px;
}

.hero-badge i,
.hero-badge svg {
    width: 14px;
    height: 14px;
}

.hero-title {
    font-size: 34px;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.hero-title .gradient-text {
    font-style: normal;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover, #ea580c) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 720px;
    margin: 0 auto 24px;
}

.hero-features-belt {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.hfb-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.hfb-icon {
    width: 15px;
    height: 15px;
}

.text-green { color: var(--success-color, #10b981) !important; }
.text-amber { color: var(--warning-color, #f59e0b) !important; }
.text-blue  { color: var(--info-color, #3b82f6) !important; }
.text-purple{ color: var(--primary-color) !important; }

/* --- 3. UNIFIED SEARCH & COMMAND BAR --- */
.unified-search-container {
    max-width: 1040px;
    margin: 0 auto 36px;
    position: relative;
    z-index: 100;
}

.unified-search-bar {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 8px 6px 14px;
    box-shadow: var(--shadow-md);
    transition: all 0.25s ease;
    gap: 6px;
}

.unified-search-container.is-focused .unified-search-bar,
.unified-search-bar:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light, rgba(249, 115, 22, 0.15));
}

.search-segment {
    position: relative;
    display: flex;
    align-items: center;
}

.search-divider {
    width: 1px;
    height: 32px;
    background: var(--border-color);
    margin: 0 4px;
    flex-shrink: 0;
}

.dropdown-segment {
    cursor: pointer;
    user-select: none;
}

.dropdown-segment .segment-content {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 12px;
    transition: background 0.2s ease;
}

.dropdown-segment:hover .segment-content {
    background: var(--bg-body);
}

.channel-avatar-sm {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.channel-meta-inline {
    display: flex;
    flex-direction: column;
    min-width: 135px;
    max-width: 210px;
    text-align: start;
}

.segment-text {
    font-size: 13px;
    font-weight: 800;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.channel-handle-sub {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chevron-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.glass-menu {
    position: absolute;
    top: calc(100% + 10px);
    inset-inline-start: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg, 0 20px 35px -10px rgba(0, 0, 0, 0.15));
    z-index: 999;
    min-width: 260px;
    padding: 8px;
    backdrop-filter: blur(14px);
}

.dropdown-header {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-list {
    list-style: none;
    margin: 0;
    padding: 4px 0;
    max-height: 280px;
    overflow-y: auto;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.15s ease;
}

.dropdown-item:hover {
    background: var(--bg-body);
    color: var(--primary-color);
}

.dropdown-item.selected {
    background: var(--primary-light);
    color: var(--primary-color);
}

.dropdown-add-channel {
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
    padding-top: 6px;
}

.add-channel-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 12px;
    font-weight: 800;
}

.input-segment {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0 10px;
    gap: 10px;
}

.search-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.search-input {
    width: 100%;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    outline: none;
    padding: 8px 0;
}

.search-input::placeholder {
    color: var(--text-muted);
    font-weight: 500;
}

.clear-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
}

.btn-execute-audit {
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: 14px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-execute-audit:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-execute-audit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-inner {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.credit-pill-badge {
    background: rgba(255, 255, 255, 0.22);
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
}

.loader-spin {
    animation: spinAnim 1s linear infinite;
}

@keyframes spinAnim {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Action Toolbar */
.cmo-action-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    padding: 0 4px;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 10px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.toolbar-btn.btn-export {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Progress & Error */
.cmo-fetching-box {
    margin-top: 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 14px 18px;
}

.cmo-fetching-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 700;
}

.cmo-fetching-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
}

.cmo-progress-bg {
    width: 100%;
    height: 6px;
    background: var(--bg-body);
    border-radius: 999px;
    overflow: hidden;
}

.cmo-progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.25s ease;
}

.cmo-error-banner {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 12px;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger-color, #ef4444);
    font-size: 13px;
    font-weight: 700;
}

/* --- 4. CANONICAL 6 BENTO FEATURES CLUSTERS --- */
.console-features {
    max-width: 1180px;
    margin: 0 auto;
}

.bento-features-cluster {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.bento-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    padding: 26px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
}

.bento-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.bento-card.bc-wide-top {
    grid-column: span 2;
}

.bento-card.bc-tall {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.bento-card.bc-wide-mid {
    grid-column: span 2;
}

.bento-decor-icon {
    position: absolute;
    inset-inline-end: -15px;
    bottom: -15px;
    opacity: 0.04;
    pointer-events: none;
}

.bento-decor-icon svg {
    width: 120px;
    height: 120px;
}

.dashed-ring-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    border: 1.5px dashed var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: var(--primary-light);
}

.bc-icon-wrapper svg {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
}

.bc-title {
    font-size: 17px;
    font-weight: 800;
    margin: 0 0 8px;
    color: var(--text-main);
}

.bc-desc {
    font-size: 13.5px;
    line-height: 1.6;
    color: var(--text-muted);
    margin: 0;
}

/* ==========================================================================
   5. EXCLUSIVE RESULTS WORKSPACE FOR TOOL 31 (THUMBNAIL STUDIO)
   ========================================================================== */

.thd-workspace-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 5.1 Quick Channel Recent Videos Strip */
.thd-channel-strip-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
}

.strip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.strip-title-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 800;
    color: var(--text-main);
}

.strip-icon {
    width: 16px;
    height: 16px;
    color: var(--primary-color);
}

.strip-count-pill {
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: 11px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 999px;
}

.strip-hint {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

.strip-carousel {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 6px;
}

.strip-video-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 250px;
    max-width: 270px;
    padding: 8px;
    border-radius: 14px;
    background: var(--bg-body);
    border: 1.5px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.strip-video-pill:hover,
.strip-video-pill.active {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.strip-thumb {
    width: 68px;
    height: 38px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
}

.strip-meta {
    overflow: hidden;
    flex: 1;
}

.strip-vid-title {
    font-size: 12px;
    font-weight: 800;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.strip-vid-sub {
    font-size: 10.5px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* 5.2 Top KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-sm);
}

.kpi-icon-wrap {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary-color);
    flex-shrink: 0;
}

.kpi-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.kpi-value {
    font-size: 20px;
    font-weight: 900;
    color: var(--text-main);
}

.kpi-unit {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
}

/* 5.3 Master 4K Cinema Preview Theater & Color Palette Studio */
.thd-main-studio-grid {
    display: grid;
    grid-template-columns: 1.65fr 1fr;
    gap: 22px;
    align-items: stretch;
}

.thd-stage-card,
.thd-palette-card,
.thd-section-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.stage-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.stage-title-block {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    flex: 1;
    min-width: 240px;
}

.stage-live-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-color);
    margin-top: 8px;
    box-shadow: 0 0 0 4px var(--primary-light);
    flex-shrink: 0;
}

.stage-video-title {
    font-size: 17px;
    font-weight: 800;
    margin: 0 0 6px;
    color: var(--text-main);
    line-height: 1.35;
}

.stage-video-sub {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
}

.stage-handle-badge,
.stage-id-pill {
    padding: 2px 8px;
    border-radius: 6px;
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-family: monospace;
}

.stage-overlay-Controls {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    background: var(--bg-body);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.overlay-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 9px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 11.5px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s ease;
}

.overlay-pill svg {
    width: 13px;
    height: 13px;
}

.overlay-pill.active {
    background: var(--primary-color);
    color: #ffffff;
}

/* Cinema Viewport & Overlays */
.thd-cinema-viewport {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #090d16;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stage-master-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: filter 0.3s ease;
}

.thd-cinema-viewport.is-squint-blur .stage-master-image {
    filter: blur(8px) contrast(1.08);
}

.stage-res-floating-badge {
    position: absolute;
    top: 14px;
    inset-inline-start: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(10px);
    color: #ffffff;
    font-size: 11.5px;
    font-weight: 800;
    border: 1px solid rgba(255, 255, 255, 0.16);
    pointer-events: none;
}

.stage-res-floating-badge svg {
    width: 13px;
    height: 13px;
    color: var(--primary-color);
}

/* Overlay 1: YouTube Timestamp Safe Zone */
.yt-timestamp-overlay-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.yt-top-right-watch-icons {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.yt-mock-icon {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.yt-mock-icon svg {
    width: 15px;
    height: 15px;
}

.yt-danger-zone-box {
    position: absolute;
    right: 8px;
    bottom: 10px;
    padding: 8px 12px;
    border: 2px dashed rgba(249, 115, 22, 0.9);
    background: rgba(249, 115, 22, 0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.danger-zone-label {
    font-size: 10px;
    font-weight: 900;
    color: #ffffff;
    background: var(--primary-color);
    padding: 2px 6px;
    border-radius: 4px;
}

.yt-duration-chip {
    background: rgba(0, 0, 0, 0.88);
    color: #ffffff;
    font-size: 13px;
    font-weight: 800;
    padding: 3px 7px;
    border-radius: 5px;
    font-family: Roboto, Arial, sans-serif;
}

.yt-progress-red-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
}

.yt-progress-red-fill {
    width: 38%;
    height: 100%;
    background: var(--primary-color);
}

/* Overlay 2: Rule of Thirds Grid */
.yt-thirds-grid-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grid-line-v {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1.5px;
    background: rgba(255, 255, 255, 0.55);
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.grid-line-v.v1 { left: 33.333%; }
.grid-line-v.v2 { left: 66.666%; }

.grid-line-h {
    position: absolute;
    left: 0;
    right: 0;
    height: 1.5px;
    background: rgba(255, 255, 255, 0.55);
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.grid-line-h.h1 { top: 33.333%; }
.grid-line-h.h2 { top: 66.666%; }

.focal-intersection {
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2.5px solid var(--primary-color);
    background: rgba(255, 255, 255, 0.9);
    transform: translate(-50%, -50%);
}

.focal-intersection.p1 { left: 33.333%; top: 33.333%; }
.focal-intersection.p2 { left: 66.666%; top: 33.333%; }
.focal-intersection.p3 { left: 33.333%; top: 66.666%; }
.focal-intersection.p4 { left: 66.666%; top: 66.666%; }

/* Stage Action Footer */
.stage-action-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.stage-Format-buttons,
.stage-utility-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-stage-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 12px;
    border: none;
    background: var(--primary-color);
    color: #ffffff;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-stage-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-stage-secondary,
.btn-stage-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-main);
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-stage-secondary:hover,
.btn-stage-icon:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Color Palette Studio Card */
.palette-card-header {
    margin-bottom: 16px;
}

.palette-title,
.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 800;
    margin: 0 0 4px;
    color: var(--text-main);
}

.card-title-icon {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
}

.palette-subtitle,
.section-subtitle {
    font-size: 12.5px;
    color: var(--text-muted);
    margin: 0;
}

.palette-spectrum-bar {
    display: flex;
    width: 100%;
    height: 24px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.spectrum-segment {
    height: 100%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.spectrum-segment:hover {
    transform: scaleY(1.15);
}

.palette-swatches-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 18px;
}

.swatch-row-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 12px;
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.swatch-row-item:hover {
    border-color: var(--primary-color);
    transform: translateX(2px);
}

.swatch-color-preview {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    flex-shrink: 0;
}

.swatch-info {
    flex: 1;
}

.swatch-hex-line {
    display: flex;
    align-items: center;
    gap: 8px;
}

.swatch-hex-code {
    font-size: 13px;
    font-weight: 900;
    font-family: monospace;
    color: var(--text-main);
}

.swatch-pct-badge {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--text-muted);
    background: var(--card-bg);
    padding: 1px 6px;
    border-radius: 6px;
}

.swatch-role-text {
    font-size: 11.5px;
    color: var(--text-muted);
    margin-top: 2px;
}

.btn-copy-hex {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
}

.thd-advisory-box {
    background: var(--primary-light);
    border: 1px solid var(--primary-color);
    border-radius: 14px;
    padding: 14px;
}

.advisory-head {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.advisory-text {
    font-size: 12px;
    line-height: 1.55;
    color: var(--text-main);
    margin: 0;
}

/* 5.4 Multi-Resolution Download Matrix */
.section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.thd-resolutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(275px, 1fr));
    gap: 18px;
}

.res-variant-card {
    background: var(--bg-body);
    border: 1.5px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    transition: all 0.2s ease;
}

.res-variant-card:hover,
.res-variant-card.is-active-stage {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.res-thumb-wrap {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #090d16;
    cursor: pointer;
    overflow: hidden;
}

.res-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.res-thumb-wrap:hover .res-thumb-img {
    transform: scale(1.04);
}

.res-badge-top {
    position: absolute;
    top: 10px;
    inset-inline-start: 10px;
    background: var(--primary-color);
    color: #ffffff;
    font-size: 10.5px;
    font-weight: 900;
    padding: 3px 8px;
    border-radius: 6px;
}

.res-badge-bottom {
    position: absolute;
    bottom: 8px;
    inset-inline-end: 8px;
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 6px;
}

.res-hover-preview-hint {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 800;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.res-thumb-wrap:hover .res-hover-preview-hint {
    opacity: 1;
}

.res-card-body {
    padding: 14px;
}

.res-card-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.res-variant-name {
    font-size: 13px;
    font-weight: 800;
    margin: 0;
    color: var(--text-main);
}

.res-size-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    background: var(--card-bg);
    padding: 2px 7px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.res-actions-row {
    display: flex;
    gap: 6px;
}

.btn-res-dl {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 8px 10px;
    border-radius: 9px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-main);
    font-size: 11.5px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-res-dl svg {
    width: 13px;
    height: 13px;
}

.btn-res-dl.primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
}

.btn-res-dl:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-res-dl.primary:hover {
    background: var(--primary-hover);
    color: #ffffff;
}

.btn-res-dl.icon-only {
    flex: 0 0 36px;
}

/* 5.5 Storyboard Grid */
.thd-storyboard-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.storyboard-card {
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.sb-img-wrap {
    position: relative;
    aspect-ratio: 4 / 3;
    background: #090d16;
}

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

.sb-frame-tag {
    position: absolute;
    top: 10px;
    inset-inline-start: 10px;
    background: rgba(0, 0, 0, 0.78);
    color: #ffffff;
    font-size: 11px;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 6px;
}

.sb-footer {
    padding: 12px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.sb-label {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-main);
}

.sb-btns {
    display: flex;
    gap: 6px;
}

/* 5.6 YouTube Mobile & Desktop Feed Simulator */
.sim-controls-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.sim-pill-group {
    display: flex;
    background: var(--bg-body);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    gap: 4px;
}

.sim-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
}

.sim-toggle-btn svg {
    width: 14px;
    height: 14px;
}

.sim-toggle-btn.active {
    background: var(--primary-color);
    color: #ffffff;
}

.thd-simulator-stage {
    border-radius: 18px;
    padding: 28px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--border-color);
    transition: all 0.25s ease;
}

.thd-simulator-stage.sim-theme-dark {
    background: #0f0f0f;
    color: #f1f1f1;
}

.thd-simulator-stage.sim-theme-light {
    background: #f8fafc;
    color: #0f0f0f;
}

.yt-mobile-mockup-card {
    width: 100%;
    max-width: 400px;
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid rgba(148, 163, 184, 0.25);
    background: inherit;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.yt-mob-statusbar {
    display: flex;
    justify-content: space-between;
    padding: 10px 16px;
    font-size: 11px;
    font-weight: 800;
    opacity: 0.8;
}

.yt-mob-thumb-box {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
}

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

.yt-mob-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
}

.yt-mob-meta-row {
    display: flex;
    gap: 12px;
    padding: 14px 16px 18px;
}

.yt-mob-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.yt-mob-title {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.yt-mob-subline {
    font-size: 12px;
    opacity: 0.7;
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

/* Desktop Sidebar Mockup */
.yt-desktop-sidebar-mockup {
    width: 100%;
    max-width: 520px;
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.yt-desk-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.yt-desk-thumb-box {
    position: relative;
    width: 180px;
    aspect-ratio: 16 / 9;
    border-radius: 10px;
    overflow: hidden;
    flex-shrink: 0;
    background: #000;
}

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

.yt-desk-info {
    flex: 1;
}

.yt-desk-title {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}

.yt-desk-author,
.yt-desk-stats {
    font-size: 12px;
    opacity: 0.7;
    line-height: 1.4;
}

.yt-desk-new-badge {
    display: inline-block;
    margin-top: 6px;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 800;
    border-radius: 4px;
    background: rgba(148, 163, 184, 0.2);
}

/* Toast Notification */
.thd-toast {
    position: fixed;
    bottom: 28px;
    inset-inline-end: 28px;
    background: var(--card-bg);
    border: 1.5px solid var(--primary-color);
    color: var(--text-main);
    padding: 12px 20px;
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 800;
    z-index: 99999;
}

.thd-toast svg {
    color: var(--primary-color);
    width: 18px;
    height: 18px;
}

/* --- 6. ROOT-LEVEL MODAL (Zero-Scroll Trap) --- */
.custom-modal-backdrop {
    position: fixed !important;
    inset: 0 !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    margin: 0 !important;
    padding: 20px !important;
    background: rgba(0, 0, 0, 0.65) !important;
    backdrop-filter: blur(12px) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.modal-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    width: 100%;
    max-width: 580px;
    overflow: hidden !important;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
}

.modal-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-title {
    font-size: 16px;
    font-weight: 800;
    margin: 0;
    color: var(--text-main);
}

.modal-close-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
}

.modal-body {
    padding: 22px;
    overflow-y: auto !important;
    max-height: calc(85vh - 135px);
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-main);
}

.modal-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.btn-modal-close {
    padding: 8px 18px;
    border-radius: 10px;
    border: none;
    background: var(--primary-color);
    color: #ffffff;
    font-weight: 800;
    cursor: pointer;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .thd-main-studio-grid {
        grid-template-columns: 1fr;
    }
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .bento-features-cluster {
        grid-template-columns: 1fr;
    }
    .bento-card.bc-wide-top,
    .bento-card.bc-wide-mid,
    .bento-card.bc-tall {
        grid-column: span 1;
        grid-row: span 1;
    }
    .thd-storyboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .unified-search-bar {
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
    }
    .search-divider {
        display: none;
    }
    .kpi-grid {
        grid-template-columns: 1fr;
    }
}