/**
 * Douyin Desktop Styles - 桌面端样式
 * Matching the exact Douyin web design
 */

/* Show only on desktop */
.desktop-only {
    display: none !important;
}

@media (min-width: 1024px) {
    /* Desktop theme overrides to match Douyin web */
    :root {
        --bg-primary: #f8f8f8;
        --bg-secondary: #ffffff;
        --bg-tertiary: #f7f7f9;
        --bg-card: #ffffff;
        --text-primary: #161823;
        --text-secondary: rgba(22, 24, 35, 0.75);
        --text-tertiary: rgba(22, 24, 35, 0.5);
        --text-disabled: rgba(22, 24, 35, 0.34);
        --border-primary: rgba(22, 24, 35, 0.12);
        --border-secondary: rgba(22, 24, 35, 0.06);
        --nav-height-desktop: 64px;
        --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.08);
    }

    /* Force mobile chrome off on desktop */
    .mobile-only,
    .bottom-nav,
    .progress-bar {
        display: none !important;
    }

    .desktop-only {
        display: block !important;
    }

    /* ===== Desktop Layout ===== */
    .desktop-layout {
        display: flex !important;
        flex-direction: column;
        height: 100vh;
        background: var(--bg-primary);
    }

    body {
        background: var(--bg-primary);
    }

    /* ===== Desktop Header ===== */
    .desktop-header {
        height: var(--nav-height-desktop);
        border-bottom: 1px solid var(--border-primary);
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 32px;
        background: var(--bg-secondary);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: var(--z-sticky);
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    }

    /* Desktop language dropdown */
    .lang-dropdown-desktop button {
        border: 1px solid var(--border-primary);
        color: var(--text-primary);
        background: var(--bg-secondary);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }

    .lang-dropdown-desktop button:hover {
        background: rgba(22, 24, 35, 0.04);
    }

    #langMenuDesktop {
        background: #ffffff;
        border: 1px solid var(--border-primary);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    }

    #langMenuDesktop a {
        color: var(--text-primary) !important;
    }

    #langMenuDesktop a:hover {
        background: rgba(22, 24, 35, 0.04) !important;
    }

    /* Logo Container */
    .logo-container {
        display: flex;
        align-items: center;
        gap: 10px;
        cursor: pointer;
        transition: opacity var(--transition-fast);
    }

    .logo-container:hover {
        opacity: 0.85;
    }

    .logo-svg {
        height: 32px;
        width: auto;
    }

    .logo-text {
        font-weight: 700;
        font-size: 22px;
        letter-spacing: -0.5px;
        color: #161823;
    }

    /* Search Bar */
    .search-bar {
        flex: 1;
        max-width: 520px;
        margin: 0 48px;
        position: relative;
    }

    .search-wrapper {
        display: flex;
        align-items: center;
        background: #f1f2f3;
        border-radius: 8px;
        overflow: hidden;
        border: 1px solid transparent;
        transition: all var(--transition-fast);
    }

    .search-wrapper:focus-within {
        border-color: var(--border-primary);
        box-shadow: 0 0 0 2px rgba(34, 90, 255, 0.08);
        background: #ffffff;
    }

    .search-input {
        flex: 1;
        height: 40px;
        background: transparent;
        border: none;
        padding: 0 16px;
        color: var(--text-primary);
        font-size: var(--font-base);
    }

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

    .search-divider {
        width: 1px;
        height: 20px;
        background: var(--border-primary);
    }

    .search-btn {
        width: 52px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        cursor: pointer;
        transition: background var(--transition-fast);
    }

    .search-btn:hover {
        background: rgba(22, 24, 35, 0.04);
    }

    .search-btn svg {
        width: 20px;
        height: 20px;
        fill: var(--text-primary);
    }

    /* Header Actions */
    .header-actions {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .upload-btn {
        height: 36px;
        padding: 0 16px;
        background: var(--douyin-pink);
        border: none;
        border-radius: var(--radius-sm);
        display: flex;
        align-items: center;
        gap: 8px;
        cursor: pointer;
        transition: all var(--transition-fast);
        font-weight: 600;
        font-size: var(--font-base);
        color: #fff;
        text-decoration: none;
        box-shadow: 0 6px 16px rgba(254, 44, 85, 0.3);
    }

    .upload-btn:hover {
        background: #ff3b5e;
        box-shadow: 0 8px 18px rgba(254, 44, 85, 0.38);
    }

    .upload-btn svg {
        width: 18px;
        height: 18px;
        fill: #fff;
    }

    .action-icon {
        position: relative;
        cursor: pointer;
        padding: 8px;
        border-radius: var(--radius-md);
        transition: background var(--transition-fast);
    }

    .action-icon:hover {
        background: rgba(22, 24, 35, 0.06);
    }

    .action-icon svg {
        width: 24px;
        height: 24px;
        fill: var(--text-primary);
    }

    .badge {
        position: absolute;
        top: 4px;
        right: 4px;
        background: var(--douyin-pink);
        color: var(--text-primary);
        font-size: 10px;
        padding: 2px 5px;
        border-radius: var(--radius-full);
        min-width: 16px;
        text-align: center;
        font-weight: 600;
    }

    .header-avatar {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        cursor: pointer;
        background: linear-gradient(135deg, #eaeaea 0%, #f5f5f5 100%);
        overflow: hidden;
        transition: opacity var(--transition-fast);
        border: 1px solid var(--border-primary);
    }

    .header-avatar:hover {
        opacity: 0.9;
    }

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

    .login-btn {
        padding: 8px 20px;
        background: #fff;
        color: var(--text-primary);
        font-weight: 600;
        font-size: var(--font-base);
        border-radius: var(--radius-sm);
        cursor: pointer;
        transition: all var(--transition-fast);
        border: 1px solid var(--border-primary);
    }

    .login-btn:hover {
        background: #f6f6f6;
    }

    /* ===== Main Layout ===== */
    .main-layout {
        display: flex;
        margin-top: var(--nav-height-desktop);
        height: calc(100vh - var(--nav-height-desktop));
        background: var(--bg-primary);
    }

    /* ===== Sidebar ===== */
    .sidebar {
        width: 260px;
        flex-shrink: 0;
        overflow-y: auto;
        padding: 16px 0 12px;
        border-right: 1px solid var(--border-primary);
        background: var(--bg-secondary);
        position: fixed;
        left: 0;
        top: var(--nav-height-desktop);
        height: calc(100vh - var(--nav-height-desktop));
    }

    .nav-group {
        padding: 0 0 var(--spacing-lg);
        border-bottom: 1px solid var(--border-secondary);
        margin-bottom: var(--spacing-lg);
    }

    .sidebar-link {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 18px;
        color: var(--text-primary);
        font-size: var(--font-lg);
        font-weight: 700;
        border-radius: 12px;
        transition: all var(--transition-fast);
        margin: 4px 12px;
    }

    .sidebar-link:hover {
        background: rgba(22, 24, 35, 0.04);
    }

    .sidebar-link.active {
        color: var(--text-primary);
        background: #f6f6f6;
        box-shadow: inset 2px 0 0 var(--douyin-pink);
    }

    .sidebar-link.active svg {
        fill: var(--douyin-pink);
    }

    .sidebar-link svg {
        width: 26px;
        height: 26px;
        fill: var(--text-primary);
    }

    /* Suggested Accounts */
    .suggested-section {
        padding: 0 var(--spacing-lg);
    }

    .suggested-title {
        font-size: var(--font-sm);
        color: var(--text-tertiary);
        margin-bottom: var(--spacing-lg);
        font-weight: 600;
        letter-spacing: 0.3px;
        text-transform: none;
    }

    .account-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 8px 0;
        cursor: pointer;
        transition: opacity var(--transition-fast);
    }

    .account-item:hover {
        opacity: 0.85;
    }

    .account-avatar {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        overflow: hidden;
    }

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

    .account-info {
        flex: 1;
        overflow: hidden;
    }

    .account-name {
        font-size: var(--font-base);
        font-weight: 700;
        color: var(--text-primary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: flex;
        align-items: center;
        gap: 4px;
    }

    .verified-badge {
        width: 14px;
        height: 14px;
        fill: var(--douyin-cyan);
    }

    .account-desc {
        font-size: var(--font-sm);
        color: var(--text-tertiary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .see-all-btn {
        color: var(--douyin-pink);
        font-size: var(--font-base);
        font-weight: 600;
        cursor: pointer;
        padding: var(--spacing-md) 0;
        transition: opacity var(--transition-fast);
    }

    .see-all-btn:hover {
        opacity: 0.85;
    }

    /* Footer Links */
    .sidebar-footer {
        padding: var(--spacing-xl) var(--spacing-lg);
        margin-top: auto;
    }

    .footer-links {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 12px;
        margin-bottom: var(--spacing-md);
    }

    .footer-links a {
        font-size: var(--font-sm);
        color: var(--text-tertiary);
        transition: color var(--transition-fast);
    }

    .footer-links a:hover {
        color: var(--text-secondary);
        text-decoration: underline;
    }

    .copyright {
        font-size: var(--font-xs);
        color: var(--text-disabled);
    }

    /* ===== Feed Container ===== */
    .feed-container {
        flex: 1;
        margin-left: 260px;
        overflow-y: scroll;
        scroll-snap-type: y mandatory;
        scroll-snap-stop: always;
        scroll-padding: 0;
        height: calc(100vh - var(--nav-height-desktop));
        display: flex;
        flex-direction: column;
        align-items: center;
        background: var(--bg-primary);
        padding: 0;
    }

    /* ===== Desktop Video Card ===== */
    .desktop-video-card {
        width: 100%;
        max-width: 1200px;
        height: calc(100vh - var(--nav-height-desktop));
        padding: 16px 0;
        scroll-snap-align: start;
        scroll-snap-stop: always;
        display: flex;
        justify-content: center;
        align-items: center;
        border-bottom: none;
        box-sizing: border-box;
    }

    .video-card-inner {
        display: flex;
        width: 100%;
        gap: 24px;
        background: var(--bg-card);
        border-radius: 16px;
        padding: 24px 28px;
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border-secondary);
        margin: 0 24px;
        align-items: flex-start;
        max-height: calc(100vh - var(--nav-height-desktop) - 32px);
        overflow: hidden;
    }

    .card-avatar {
        width: 64px;
        height: 64px;
        border-radius: 50%;
        flex-shrink: 0;
        cursor: pointer;
        overflow: hidden;
        background: linear-gradient(135deg, #f3f3f3 0%, #e9e9e9 100%);
        transition: opacity var(--transition-fast);
        border: 1px solid var(--border-primary);
    }

    .card-avatar:hover {
        opacity: 0.92;
    }

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

    .card-content {
        flex: 1;
        min-width: 0;
        display: flex;
        flex-direction: column;
        max-height: 100%;
        overflow: hidden;
    }

    .card-header {
        margin-bottom: var(--spacing-md);
        flex-shrink: 0;
    }

    .card-author-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 4px;
        gap: 12px;
    }

    .card-author {
        display: flex;
        align-items: baseline;
        gap: 8px;
        cursor: pointer;
    }

    .author-name {
        font-size: var(--font-xl);
        font-weight: 700;
        color: var(--text-primary);
        transition: text-decoration var(--transition-fast);
    }

    .author-name:hover {
        text-decoration: underline;
    }

    .author-id {
        font-size: var(--font-base);
        color: var(--text-tertiary);
    }

    .follow-button {
        padding: 8px 18px;
        border: none;
        background: var(--douyin-pink);
        color: #fff;
        font-weight: 700;
        font-size: var(--font-base);
        border-radius: var(--radius-sm);
        cursor: pointer;
        transition: all var(--transition-fast);
    }

    .follow-button:hover {
        background: #ff3b5e;
    }

    .follow-button.following {
        background: #f6f6f6;
        color: var(--text-secondary);
    }

    .card-desc {
        font-size: var(--font-lg);
        color: var(--text-primary);
        line-height: 1.6;
        margin-bottom: 10px;
    }

    .card-tags a {
        color: var(--douyin-pink);
        font-weight: 600;
        transition: color var(--transition-fast);
    }

    .card-tags a:hover {
        color: #ff3b5e;
    }

    .card-music {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: var(--font-sm);
        color: var(--text-secondary);
        cursor: pointer;
        transition: color var(--transition-fast);
    }

    .card-music:hover {
        color: var(--text-primary);
    }

    .card-music svg {
        width: 14px;
        height: 14px;
        fill: currentColor;
    }

    /* Video Player Desktop */
    .video-wrapper-desktop {
        display: flex;
        gap: 16px;
        margin-top: 0;
        align-items: center;
        flex: 1;
        min-height: 0;
    }

    /* ===== Desktop comment panel (light theme) ===== */
    .panel,
    .comment-panel,
    .share-panel {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }

    .comment-list {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }

    .comment-item {
        border-bottom: 1px solid var(--border-secondary);
    }

    .comment-input-wrap {
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-primary);
    }

    .comment-input {
        background: #f1f2f3;
        border: 1px solid var(--border-secondary);
        color: var(--text-primary);
    }

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

    .comment-send {
        background: var(--douyin-pink);
        color: #fff;
        border: none;
    }

    .comment-send:disabled {
        background: rgba(22, 24, 35, 0.08);
        color: var(--text-disabled);
    }

    .video-player-desktop {
        width: 520px;
        max-height: calc(100vh - var(--nav-height-desktop) - 180px);
        aspect-ratio: 9 / 16;
        background: #000;
        border-radius: 16px;
        overflow: hidden;
        position: relative;
        cursor: pointer;
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
        align-self: center;
        flex-shrink: 0;
    }

    .video-player-desktop video {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .video-player-desktop:hover .video-controls {
        opacity: 1;
    }

    .video-controls {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: var(--spacing-md);
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
        opacity: 0;
        transition: opacity var(--transition-fast);
    }

    .video-progress {
        width: 100%;
        height: 3px;
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
        cursor: pointer;
    }

    .video-progress-fill {
        height: 100%;
        background: var(--text-primary);
        border-radius: 2px;
        transition: width 0.1s linear;
    }

    /* Desktop Actions */
    .desktop-actions {
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        gap: 14px;
        padding-bottom: 14px;
        min-width: 88px;
        align-items: center;
    }

    .action-btn-desktop {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 6px;
        cursor: pointer;
        transition: all var(--transition-fast);
        color: var(--text-secondary);
    }

    .action-btn-desktop:hover {
        opacity: 0.9;
    }

    .action-btn-desktop .icon-circle {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: rgba(22, 24, 35, 0.04);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: background var(--transition-fast);
    }

    .action-btn-desktop:hover .icon-circle {
        background: rgba(22, 24, 35, 0.07);
    }

    .action-btn-desktop svg {
        width: 24px;
        height: 24px;
        fill: var(--text-primary);
    }

    .action-btn-desktop.liked svg {
        fill: var(--douyin-pink);
    }

    .action-btn-desktop.liked .icon-circle {
        background: rgba(254, 44, 85, 0.12);
    }

    .action-text {
        font-size: var(--font-sm);
        color: var(--text-secondary);
        font-weight: 600;
    }

    .action-btn-desktop.liked .action-text {
        color: var(--douyin-pink);
    }

    /* Bookmark/Saved state */
    .action-btn-desktop.saved svg {
        fill: #ffc107;
    }

    .action-btn-desktop.saved .icon-circle {
        background: rgba(255, 193, 7, 0.12);
    }

    .action-btn-desktop.saved .action-text {
        color: #ffc107;
    }

    /* Floating Music Disc */
    .floating-disc {
        width: 46px;
        height: 46px;
        position: relative;
        animation: rotateDisc 5s linear infinite;
    }

    .floating-disc.paused {
        animation-play-state: paused;
    }

    .floating-disc-bg {
        width: 100%;
        height: 100%;
        background: #f1f1f2;
        border-radius: 50%;
        position: absolute;
    }

    .floating-disc-cover {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 28px;
        height: 28px;
        border-radius: 50%;
        overflow: hidden;
        background: linear-gradient(135deg, #f3f3f3 0%, #e9e9e9 100%);
    }

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

    /* ===== Desktop Comment Panel ===== */
    .desktop-comment-panel {
        position: fixed;
        right: 0;
        top: var(--nav-height-desktop);
        width: 400px;
        height: calc(100vh - var(--nav-height-desktop));
        background: #fff;
        border-left: 1px solid var(--border-primary);
        transform: translateX(100%);
        transition: transform var(--transition-slow);
        z-index: var(--z-modal);
        display: flex;
        flex-direction: column;
        box-shadow: -6px 0 16px rgba(0, 0, 0, 0.06);
    }

    .desktop-comment-panel.show {
        transform: translateX(0);
    }
}

/* Large Desktop */
@media (min-width: 1440px) {
    .sidebar {
        width: 280px;
    }

    .feed-container {
        margin-left: 280px;
    }

    .desktop-video-card {
        max-width: 1280px;
    }

    .video-player-desktop {
        width: 560px;
    }
}