/* 视频作品展示网站样式 */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --accent-primary: #e63946;
    --accent-secondary: #f4a261;
    --text-primary: #f1faee;
    --text-secondary: #a8dadc;
    --text-muted: #6c757d;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* 顶部导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.95), transparent);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.brand-icon {
    color: var(--accent-primary);
    font-size: 20px;
}

.brand-text {
    font-family: var(--font-display);
    font-size: 28px;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 12px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.nav-btn:active {
    transform: scale(0.95);
}

/* 视频容器 */
.video-container {
    position: relative;
    width: 100%;
    height: 100vh;
    background: #000;
    overflow: hidden;
}

.main-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    /* 禁用视频相关功能 */
    -webkit-user-select: none;
    user-select: none;
    pointer-events: auto;
}

/* 隐藏原生 controls */
.main-video::-webkit-media-controls {
    display: none !important;
}

/* 隐藏下载按钮 */
.main-video::-webkit-media-controls-download-button {
    display: none !important;
}

/* Firefox 隐藏下载 */
.main-video::-moz-media-controls-download-button {
    display: none !important;
}

/* 视频覆盖层 */
.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-xl) var(--spacing-md);
    padding-top: 100px;
    background: linear-gradient(
        to top,
        rgba(10, 10, 10, 0.9) 0%,
        rgba(10, 10, 10, 0.4) 40%,
        transparent 100%
    );
    pointer-events: none;
    transition: var(--transition-normal);
    z-index: 10;
}

.video-overlay.hidden {
    opacity: 0;
}

.video-info {
    transform: translateY(0);
    transition: var(--transition-normal);
}

.video-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 6vw, 64px);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.video-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.play-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: var(--transition-normal);
    pointer-events: none;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
}

.play-indicator.show {
    opacity: 1;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

/* 视频控制栏 */
.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 24px;
    background: linear-gradient(to top, rgba(10, 10, 10, 0.95), transparent);
    opacity: 1;
    transform: translateY(0);
    z-index: 100;
}

.progress-container {
    width: 100%;
    height: 20px;
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    position: relative;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: visible;
}

.progress-container:hover .progress-bar {
    height: 6px;
}

.progress-filled {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s linear;
}

.progress-handle {
    position: absolute;
    top: 50%;
    left: 0%;
    width: 14px;
    height: 14px;
    background: var(--text-primary);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.progress-container:hover .progress-handle {
    transform: translate(-50%, -50%) scale(1);
}

.controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.controls-left,
.controls-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.controls-left {
    flex: 1;
}

.controls-right {
    flex-shrink: 0;
}

/* 音量控制 */
.volume-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.volume-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    flex-shrink: 0;
}

.volume-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.volume-slider {
    width: 70px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    cursor: pointer;
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.control-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.time-display {
    font-size: 14px;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
    min-width: 90px;
}

.cache-status {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 4px;
}

/* 侧边菜单 */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 380px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 200;
    transform: translateX(-100%);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
}

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

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-family: var(--font-display);
    font-size: 24px;
    letter-spacing: 2px;
}

.close-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.video-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.video-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
    border: 2px solid transparent;
}

.video-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(4px);
}

.video-item.active {
    border-color: var(--accent-primary);
    background: rgba(230, 57, 70, 0.1);
}

.video-item-thumb {
    width: 120px;
    height: 68px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.video-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
}

.video-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.video-item-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.video-item-cache {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--accent-secondary);
    margin-top: 4px;
}

.video-item-cache svg {
    width: 12px;
    height: 12px;
}

/* 遮罩层 */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    backdrop-filter: blur(4px);
}

.overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* 提示消息 */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    border-left: 3px solid var(--accent-primary);
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast-message {
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        padding: 0 var(--spacing-sm);
    }

    .brand-text {
        font-size: 22px;
    }

    .video-overlay {
        padding: var(--spacing-lg) var(--spacing-sm);
        padding-top: 80px;
    }

    .video-title {
        font-size: 28px;
    }

    .video-controls {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .time-display {
        display: none;
    }

    .cache-status {
        display: none;
    }

    .sidebar {
        width: 100%;
        max-width: 100%;
    }

    .video-item-thumb {
        width: 100px;
        height: 56px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 加载动画 */
.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}