/* KV-Tube - YouTube Clone Design System */

/* ===== YouTube Dark Theme Colors ===== */
:root {
    --yt-bg-primary: #0f0f0f;
    --yt-bg-secondary: #333333;
    --yt-bg-elevated: #282828;
    --yt-bg-hover: #444444;
    --yt-bg-active: #3ea6ff;

    --yt-text-primary: #f1f1f1;
    --yt-text-secondary: #aaaaaa;
    --yt-text-disabled: #717171;
    --yt-static-white: #ffffff;

    --yt-accent-red: #ff0000;
    --yt-accent-blue: #3ea6ff;

    --yt-border: rgba(255, 255, 255, 0.1);
    --yt-divider: rgba(255, 255, 255, 0.2);

    --yt-header-height: 56px;
    --yt-sidebar-width: 240px;
    --yt-sidebar-mini: 72px;

    --yt-radius-sm: 4px;
    --yt-radius-md: 8px;
    --yt-radius-lg: 12px;
    --yt-radius-xl: 16px;
    --yt-radius-xl: 16px;
    --yt-radius-pill: 9999px;
}

[data-theme="light"] {
    --yt-bg-primary: #ffffff;
    --yt-bg-secondary: #f2f2f2;
    --yt-bg-elevated: #e5e5e5;
    --yt-bg-hover: #e5e5e5;

    --yt-text-primary: #0f0f0f;
    --yt-text-secondary: #606060;
    --yt-text-disabled: #909090;

    --yt-border: rgba(0, 0, 0, 0.1);
    --yt-divider: rgba(0, 0, 0, 0.1);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--yt-bg-primary);
    /* Fix white bar issue */
}

body {
    font-family: 'Roboto', 'Arial', sans-serif;
    background-color: var(--yt-bg-primary);
    color: var(--yt-text-primary);
    line-height: 1.4;
    overflow-x: hidden;
    min-height: 100vh;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Hide scrollbar globally but allow scroll */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--yt-bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--yt-bg-hover);
}

/* ===== App Layout ===== */
.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== Header (YouTube Style) ===== */
.yt-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--yt-header-height);
    background: var(--yt-bg-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1000;
    border-bottom: 1px solid var(--yt-border);
}

.yt-header-start {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 200px;
}

.yt-header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    max-width: 728px;
    margin: 0 40px;
}

.yt-header-end {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 200px;
    justify-content: flex-end;
}

/* Menu Button */
.yt-menu-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--yt-text-primary);
    transition: background 0.2s;
}

.yt-menu-btn:hover {
    background: var(--yt-bg-hover);
}

/* Logo */
.yt-logo {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 20px;
    font-weight: 600;
    color: var(--yt-text-primary);
}

.yt-logo-icon {
    width: 90px;
    height: 20px;
    background: var(--yt-accent-red);
    border-radius: var(--yt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Search Bar */
.yt-search-form {
    display: flex;
    flex: 1;
    max-width: 600px;
}

.yt-search-input {
    flex: 1;
    height: 40px;
    background: var(--yt-bg-secondary);
    border: 1px solid var(--yt-border);
    border-right: none;
    border-radius: 20px 0 0 20px;
    padding: 0 16px;
    font-size: 16px;
    color: var(--yt-text-primary);
    outline: none;
}

.yt-search-input:focus {
    border-color: var(--yt-accent-blue);
}

.yt-search-input::placeholder {
    color: var(--yt-text-disabled);
}

.yt-search-btn {
    width: 64px;
    height: 40px;
    background: var(--yt-bg-secondary);
    border: 1px solid var(--yt-border);
    border-radius: 0 20px 20px 0;
    color: var(--yt-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.yt-search-btn:hover {
    background: var(--yt-bg-hover);
}

/* Header Icons */
.yt-icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--yt-text-primary);
    font-size: 20px;
    transition: background 0.2s;
}

.yt-icon-btn:hover {
    background: var(--yt-bg-hover);
}

/* Avatar */
.yt-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--yt-accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
}

.yt-signin-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius-pill);
    color: var(--yt-accent-blue);
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

.yt-signin-btn:hover {
    background: rgba(62, 166, 255, 0.1);
}

/* ===== Sidebar (YouTube Style) ===== */
.yt-sidebar {
    position: fixed;
    top: var(--yt-header-height);
    left: 0;
    bottom: 0;
    width: var(--yt-sidebar-width);
    background: var(--yt-bg-primary);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 0;
    z-index: 900;
    transition: width 0.2s, transform 0.2s;
}

.yt-sidebar.collapsed {
    width: var(--yt-sidebar-mini);
}

.yt-sidebar-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 10px 12px 10px 24px;
    color: var(--yt-text-primary);
    font-size: 14px;
    border-radius: var(--yt-radius-lg);
    margin: 0 12px;
    transition: background 0.2s;
}

.yt-sidebar-item:hover {
    background: var(--yt-bg-hover);
}

.yt-sidebar-item.active {
    background: var(--yt-bg-secondary);
    font-weight: 500;
}

.yt-sidebar-item i {
    font-size: 18px;
    width: 22px;
    text-align: center;
}

.yt-sidebar-item span {
    white-space: nowrap;
}

.yt-sidebar.collapsed .yt-sidebar-item {
    flex-direction: column;
    gap: 6px;
    padding: 16px 0;
    margin: 0;
    border-radius: 0;
}

.yt-sidebar.collapsed .yt-sidebar-item span {
    font-size: 10px;
}

.yt-sidebar-divider {
    height: 1px;
    background: var(--yt-border);
    margin: 12px 0;
}

.yt-sidebar-title {
    padding: 8px 24px;
    font-size: 14px;
    color: var(--yt-text-secondary);
    font-weight: 500;
}

/* ===== Main Content ===== */
.yt-main {
    margin-top: var(--yt-header-height);
    margin-left: var(--yt-sidebar-width);
    padding: 24px;
    min-height: calc(100vh - var(--yt-header-height));
    transition: margin-left 0.2s;
}

.yt-main.sidebar-collapsed {
    margin-left: var(--yt-sidebar-mini);
}

/* ===== Category Pills ===== */
.yt-categories {
    display: flex;
    gap: 12px;
    padding: 12px 0 24px;
    overflow-x: auto;
    scrollbar-width: none;
    flex-wrap: nowrap;
    -ms-overflow-style: none;
}

.yt-categories::-webkit-scrollbar {
    display: none;
}

.yt-category-pill {
    padding: 8px 12px;
    background: var(--yt-bg-secondary);
    border-radius: var(--yt-radius-pill);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    color: var(--yt-text-primary);
    transition: background 0.2s;
}

.yt-category-pill:hover {
    background: var(--yt-bg-hover);
}

.yt-category-pill.active {
    background: var(--yt-text-primary);
    color: var(--yt-bg-primary);
}

/* ===== Video Grid ===== */
.yt-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px 16px;
}

/* ===== Video Card (YouTube Style) ===== */
.yt-video-card {
    cursor: pointer;
    border-radius: var(--yt-radius-lg);
    overflow: hidden;
    transition: transform 0.1s;
}

.yt-video-card:hover {
    transform: scale(1.02);
}

.yt-thumbnail-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--yt-radius-lg);
    overflow: hidden;
    background: var(--yt-bg-secondary);
}

.yt-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.3s ease;
}

.yt-thumbnail.loaded {
    opacity: 1;
}

.yt-video-card:hover .yt-thumbnail {
    transform: scale(1.05);
}

.yt-duration {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 4px;
    border-radius: var(--yt-radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.yt-video-details {
    display: flex;
    gap: 12px;
    padding: 12px 0;
}

.yt-channel-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--yt-bg-secondary);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--yt-text-primary);
}

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

.yt-video-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--yt-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.yt-channel-name {
    font-size: 12px;
    color: var(--yt-text-secondary);
    margin-bottom: 2px;
}

.yt-channel-name:hover {
    color: var(--yt-text-primary);
}

.yt-video-stats {
    font-size: 12px;
    color: var(--yt-text-secondary);
}

/* ===== Watch Page ===== */
.yt-watch-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
    max-width: 1800px;
}

.yt-player-section {
    width: 100%;
}

.yt-player-container {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--yt-radius-lg);
    overflow: hidden;
}

.yt-video-info {
    padding: 16px 0;
}

.yt-video-info h1 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
}

.yt-video-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.yt-action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--yt-bg-secondary);
    border-radius: var(--yt-radius-pill);
    font-size: 14px;
    font-weight: 500;
    color: var(--yt-text-primary);
    transition: background 0.2s;
}

.yt-action-btn:hover {
    background: var(--yt-bg-hover);
}

.yt-channel-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--yt-border);
}

.yt-channel-details {
    display: flex;
    align-items: center;
    gap: 12px;
}

.yt-channel-avatar-lg {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--yt-bg-secondary);
}

.yt-subscribe-btn {
    padding: 10px 16px;
    background: var(--yt-text-primary);
    color: var(--yt-bg-primary);
    border-radius: var(--yt-radius-pill);
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.yt-subscribe-btn:hover {
    opacity: 0.9;
}

.yt-description-box {
    background: var(--yt-bg-secondary);
    border-radius: var(--yt-radius-lg);
    padding: 12px;
    margin-top: 16px;
    cursor: pointer;
}

.yt-description-box:hover {
    background: var(--yt-bg-hover);
}

.yt-description-stats {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.yt-description-text {
    font-size: 14px;
    color: var(--yt-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Suggested Videos */
.yt-suggested {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    position: sticky;
    top: 80px;
    padding-right: 8px;
}

/* Custom scrollbar for suggested videos */
.yt-suggested::-webkit-scrollbar {
    width: 6px;
}

.yt-suggested::-webkit-scrollbar-track {
    background: transparent;
}

.yt-suggested::-webkit-scrollbar-thumb {
    background: var(--yt-border);
    border-radius: 3px;
}

.yt-suggested::-webkit-scrollbar-thumb:hover {
    background: var(--yt-text-secondary);
}

.yt-suggested-card {
    display: flex;
    gap: 8px;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--yt-radius-md);
    transition: background 0.2s;
}

.yt-suggested-card:hover {
    background: var(--yt-bg-secondary);
}

.yt-suggested-thumb {
    width: 168px;
    aspect-ratio: 16/9;
    border-radius: var(--yt-radius-md);
    object-fit: cover;
    flex-shrink: 0;
}

.yt-suggested-info {
    flex: 1;
    min-width: 0;
}

.yt-suggested-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}

.yt-suggested-channel {
    font-size: 12px;
    color: var(--yt-text-secondary);
}

.yt-suggested-stats {
    font-size: 12px;
    color: var(--yt-text-secondary);
}

/* ===== Auth Pages ===== */
.yt-auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - var(--yt-header-height) - 100px);
}

.yt-auth-card {
    background: var(--yt-bg-secondary);
    border-radius: var(--yt-radius-lg);
    padding: 48px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.yt-auth-card h2 {
    font-size: 24px;
    margin-bottom: 8px;
}

.yt-auth-card p {
    color: var(--yt-text-secondary);
    margin-bottom: 24px;
}

.yt-form-group {
    margin-bottom: 16px;
    text-align: left;
}

.yt-form-group label {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--yt-text-secondary);
}

.yt-form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--yt-bg-primary);
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius-md);
    font-size: 16px;
    color: var(--yt-text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.yt-form-input:focus {
    border-color: var(--yt-accent-blue);
}

.yt-btn-primary {
    width: 100%;
    padding: 12px 24px;
    background: var(--yt-accent-blue);
    color: var(--yt-bg-primary);
    border-radius: var(--yt-radius-md);
    font-size: 16px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.yt-btn-primary:hover {
    opacity: 0.9;
}

/* ===== Loader ===== */
/* ===== Loader (SOTA Quantum Style) ===== */
.yt-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 300px;
    color: var(--yt-text-secondary);
    background: transparent;
}

/* Spinner removed */

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .yt-watch-layout {
        grid-template-columns: 1fr;
    }

    .yt-suggested {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    .yt-suggested-card {
        flex-direction: column;
    }

    .yt-suggested-thumb {
        width: 100%;
    }
}

@media (max-width: 1024px) {
    .yt-sidebar {
        transform: translateX(-100%);
    }

    .yt-sidebar.open {
        transform: translateX(0);
    }

    .yt-main {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .yt-header-center {
        display: flex;
        /* Show search on mobile */
        margin: 0 8px;
        max-width: none;
        flex: 1;
        justify-content: center;
    }

    .yt-search-input {
        padding: 0 12px;
        font-size: 14px;
        border-radius: 18px 0 0 18px;
    }

    .yt-search-btn {
        width: 48px;
        border-radius: 0 18px 18px 0;
    }

    .yt-mobile-search {
        display: none;
        /* Hide icon since bar is visible */
    }

    .yt-signin-text {
        display: none;
    }

    .yt-video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        padding: 0 4px;
    }

    .yt-video-card {
        border-radius: 0;
        padding: 12px;
    }

    .yt-thumbnail-container {
        border-radius: 12px;
    }

    .yt-main {
        padding: 12px;
    }

    .yt-categories {
        padding: 8px 0 16px;
        gap: 8px;
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        white-space: nowrap;
    }

    .yt-category-pill {
        padding: 6px 10px;
        font-size: 13px;
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .yt-video-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .yt-main {
        padding: 16px;
    }
}

/* Mobile Search Bar */
.yt-mobile-search {
    display: none;
}

.yt-mobile-search-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--yt-header-height);
    background: var(--yt-bg-primary);
    display: none;
    align-items: center;
    gap: 12px;
    padding: 0 12px;
    z-index: 1100;
}

.yt-mobile-search-bar.active {
    display: flex;
}

.yt-mobile-search-bar input {
    flex: 1;
    height: 40px;
    background: var(--yt-bg-secondary);
    border: none;
    border-radius: 20px;
    padding: 0 16px;
    font-size: 16px;
    color: var(--yt-text-primary);
    outline: none;
}

.yt-back-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--yt-text-primary);
}

/* Sidebar Overlay (Mobile) */
.yt-sidebar-overlay {
    position: fixed;
    top: var(--yt-header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 899;
    display: none;
}

.yt-sidebar-overlay.active {
    display: block;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.yt-video-card {
    animation: fadeIn 0.3s ease forwards;
}

/* Stagger animation for grid */
.yt-video-card:nth-child(1) {
    animation-delay: 0.05s;
}

.yt-video-card:nth-child(2) {
    animation-delay: 0.1s;
}

.yt-video-card:nth-child(3) {
    animation-delay: 0.15s;
}

.yt-video-card:nth-child(4) {
    animation-delay: 0.2s;
}

.yt-video-card:nth-child(5) {
    animation-delay: 0.25s;
}

.yt-video-card:nth-child(6) {
    animation-delay: 0.3s;
}

/* ===== Skeleton Loader (Shimmer) ===== */
.skeleton {
    background: var(--yt-bg-secondary);
    background: linear-gradient(90deg,
            var(--yt-bg-secondary) 25%,
            var(--yt-bg-hover) 50%,
            var(--yt-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

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

    100% {
        background-position: -200% 0;
    }
}

.skeleton-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skeleton-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--yt-radius-lg);
}

.skeleton-details {
    display: flex;
    gap: 12px;
}

.skeleton-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-title {
    height: 14px;
    width: 90%;
}

.skeleton-meta {
    height: 12px;
    width: 60%;
}

.skeleton-short {
    width: 180px;
    height: 320px;
    border-radius: 12px;
    background: var(--yt-bg-secondary);
    background: linear-gradient(90deg,
            var(--yt-bg-secondary) 25%,
            var(--yt-bg-hover) 50%,
            var(--yt-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    flex-shrink: 0;
}

.skeleton-comment {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.skeleton-comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--yt-bg-secondary);
}

.skeleton-comment-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-line {
    height: 12px;
    border-radius: 4px;
    background: var(--yt-bg-secondary);
    background: linear-gradient(90deg,
            var(--yt-bg-secondary) 25%,
            var(--yt-bg-hover) 50%,
            var(--yt-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Friendly Empty State */
.yt-empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: var(--yt-text-secondary);
}

.yt-empty-icon {
    font-size: 48px;
    margin-bottom: 24px;
    opacity: 0.5;
}

.yt-empty-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--yt-text-primary);
}

.yt-empty-desc {
    font-size: 14px;
    margin-bottom: 24px;
}

/* ===== Horizontal Video Card (Suggested/Sidebar) ===== */
.yt-video-card-horizontal {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    border-radius: var(--yt-radius-md);
    transition: background 0.2s;
    padding: 6px;
}

.yt-video-card-horizontal:hover {
    background: var(--yt-bg-hover);
}

.yt-thumb-container-h {
    position: relative;
    width: 140px;
    aspect-ratio: 16/9;
    border-radius: var(--yt-radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--yt-bg-secondary);
}

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

.yt-details-h {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.yt-title-h {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.3;
    color: var(--yt-text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.yt-meta-h {
    font-size: 12px;
    color: var(--yt-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Floating Back Button */
.yt-floating-back {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: var(--yt-accent-blue);
    color: white;
    border-radius: 50%;
    display: none;
    /* Hidden on desktop */
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    z-index: 2000;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    border: none;
}

.yt-floating-back:active {
    transform: scale(0.95);
    background: #2c95dd;
}

@media (max-width: 768px) {
    .yt-floating-back {
        display: flex;
        /* Show only on mobile */
    }
}

/* Mobile V2 Overrides */
@media (max-width: 768px) {
    .yt-video-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
        padding: 0 4px !important;
    }

    .yt-video-card {
        padding: 4px !important;
    }

    .yt-categories {
        display: flex !important;
        flex-wrap: nowrap !important;
        grid-template-rows: none !important;
        padding-right: 16px !important;
        white-space: nowrap !important;
    }

    .yt-floating-back {
        background: var(--yt-accent-red) !important;
    }

    .yt-floating-back:active {
        background: #cc0000 !important;
    }
}

/* Mobile V4 Overrides - Pixel Perfect Polish */
@media (max-width: 768px) {

    /* Optimize Categories */
    .yt-categories {
        padding: 8px 0 8px 8px !important;
        /* Left padding for start, no right padding */
        width: 100% !important;
        mask-image: linear-gradient(to right, black 95%, transparent 100%);
        -webkit-mask-image: linear-gradient(to right, black 95%, transparent 100%);
    }

    .yt-chip {
        font-size: 12px !important;
        padding: 6px 12px !important;
        height: 30px !important;
        border-radius: 6px !important;
    }

    /* Maximize Thumbnails */
    .yt-main {
        padding: 0 !important;
        /* Edge to edge */
    }

    .yt-video-grid {
        gap: 1px !important;
        /* Minimal gap */
        padding: 0 !important;
        background: var(--yt-bg-primary);
    }

    .yt-video-card,
    .skeleton-card {
        padding: 0 !important;
        margin-bottom: 4px !important;
    }

    .yt-thumbnail-container,
    .skeleton-thumb {
        border-radius: 6px !important;
    }

    .yt-video-details {
        padding: 6px 8px 12px !important;
    }

    .yt-video-title {
        font-size: 13px !important;
        line-height: 1.2 !important;
    }

    /* Reduce header padding to match */
    .yt-header {
        padding: 0 12px !important;
    }

    /* Filter bar spacing */
    .yt-filter-bar {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
}