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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius: 16px;
    --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #818cf8;
        --primary-dark: #6366f1;
        --secondary-color: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-light: #94a3b8;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-card: #1e293b;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    padding: 0;
    margin: 0;
}

.app-container {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 0;
}

.container {
    width: 100%;
    max-width: 480px;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 0;
}

/* 头部样式 */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 30px 25px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.header .subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* 公告栏样式 */
.announcement-bar {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 12px 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 50px;
}

.announcement-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    animation: bounce 2s infinite;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.announcement-content {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 24px;
}

.announcement-text {
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.4;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.announcement-text.scrollable {
    display: block;
    -webkit-line-clamp: unset;
    white-space: nowrap;
    animation: scrollText 25s linear infinite;
}

.announcement-text .song-name {
    color: #ffd700;
    font-weight: 600;
    margin: 0 4px;
}

.announcement-text .highlight {
    color: #ff6b6b;
    font-weight: 700;
}

.announcement-text .new-badge {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 2px 6px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-right: 6px;
    animation: pulse 2s infinite;
}

/* 公告栏动画 */
@keyframes scrollText {
    0% {
        transform: translateX(100%);
    }

    5% {
        transform: translateX(0);
    }

    95% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-100%);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-4px);
    }

    60% {
        transform: translateY(-2px);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.announcement-bar:hover .announcement-text.scrollable {
    animation-play-state: paused;
}

/* 服务器信息 */
.server-info {
    background: var(--bg-secondary);
    padding: 15px 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* 控制区域 */
.controls-section {
    padding: 25px;
    background: var(--bg-primary);
}

/* 播放信息 */
.player-info {
    text-align: center;
    margin-bottom: 25px;
}

#nowPlaying {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    min-height: 24px;
}

/* 进度条样式 */
.progress-container {
    margin-bottom: 20px;
    position: relative;
}

#progressBar {
    width: 100%;
    height: 12px;
    border-radius: 6px;
    background: var(--bg-secondary);
    overflow: visible;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    -webkit-appearance: none;
}

#progressBar::-webkit-slider-track {
    width: 100%;
    height: 12px;
    border-radius: 6px;
    background: var(--bg-secondary);
    border: none;
}

#progressBar::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 2px solid white;
    transition: all 0.2s ease;
    margin-top: -3px;
}

#progressBar::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--primary-dark);
}

#timeDisplay {
    font-size: 0.8rem;
    color: var(--text-light);
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
}

/* 控制按钮 */
.control-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.btn {
    padding: 14px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.btn.primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn.refresh {
    background: #10b981;
    color: white;
}

.btn.refresh:hover {
    background: #059669;
}

.btn:disabled {
    background: #cbd5e0;
    color: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

/* 播放模式 */
.play-mode {
    display: flex;
    justify-content: center;
    gap: 20px;
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.play-mode label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.play-mode input[type="radio"] {
    accent-color: var(--primary-color);
}

/* 播放列表 */
.playlist-section {
    background: var(--bg-primary);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.playlist-header {
    padding: 20px 25px 15px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.playlist-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

#songCount {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: normal;
}

/* 搜索容器 */
.search-container {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

#searchInput {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--bg-secondary);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 16px;
    transition: all 0.3s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
}

#searchInput::placeholder {
    color: var(--text-light);
}

.btn.search-clear {
    padding: 6px 10px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.8rem;
    min-width: auto;
}

.btn.search-clear:hover {
    background: var(--primary-color);
    color: white;
}

#loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.playlist {
    max-height: 400px;
    overflow-y: auto;
    padding: 0 15px 15px;
}

/* 滚动条样式 */
.playlist::-webkit-scrollbar {
    width: 6px;
}

.playlist::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.playlist::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.song-item {
    padding: 12px 15px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-secondary);
    border: 1px solid transparent;
}

.song-item:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.song-item.playing {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-color: var(--primary-dark);
}

.song-index {
    font-size: 0.8rem;
    color: var(--text-light);
    min-width: 25px;
}

.song-item.playing .song-index {
    color: rgba(255, 255, 255, 0.8);
}

.song-name {
    flex: 1;
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.2);
}

/* 搜索高亮 */
.search-highlight {
    background-color: rgba(255, 235, 59, 0.3);
    padding: 1px 2px;
    border-radius: 2px;
}

/* 无搜索结果 */
.no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.no-results-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.no-results h4 {
    margin-bottom: 10px;
    color: var(--text-secondary);
}

.no-results p {
    font-size: 0.9rem;
}

/* 搜索状态样式 */
.no-results .loading-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

/* 上传区域 */
.upload-area {
    border: 2px dashed var(--primary-color);
    border-radius: var(--radius);
    padding: 40px 25px;
    text-align: center;
    margin: 15px;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: var(--primary-dark);
    background: var(--bg-primary);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.7;
}

.upload-area h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

.upload-area p {
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.upload-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}

/* 消息提示 */
.file-info {
    background: #d1fae5;
    border: 1px solid #a7f3d0;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin: 15px;
    font-size: 0.9rem;
    color: #065f46;
    text-align: center;
}

.error {
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-sm);
    padding: 25px;
    margin: 15px;
    text-align: center;
    color: #dc2626;
}

.error h4 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* 加载动画 */
.loading-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {

    0%,
    20% {
        content: '.';
    }

    40% {
        content: '..';
    }

    60% {
        content: '...';
    }

    80%,
    100% {
        content: '';
    }
}

/* 移动端优化 */
@media (max-width: 480px) {
    .app-container {
        padding: 0;
    }

    .container {
        border-radius: var(--radius);
    }

    .header {
        padding: 25px 20px 20px;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    /* 公告栏移动端优化 */
    .announcement-bar {
        padding: 10px 15px;
        gap: 10px;
        min-height: auto;
    }

    .announcement-icon {
        font-size: 1rem;
        width: 28px;
        height: 28px;
        margin-top: 1px;
    }

    .announcement-text {
        font-size: 0.85rem;
        line-height: 1.3;
    }

    .announcement-text.scrollable {
        animation: scrollText 20s linear infinite;
    }

    .announcement-text .new-badge {
        font-size: 0.75rem;
        padding: 1px 5px;
    }

    .controls-section {
        padding: 20px;
    }

    .control-buttons {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .btn {
        padding: 12px;
        font-size: 0.85rem;
    }

    .play-mode {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }

    .server-info {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .playlist-header {
        padding: 15px 20px 10px;
    }

    .playlist {
        max-height: 300px;
        padding: 0 10px 10px;
    }

    .song-item {
        padding: 10px 12px;
        gap: 8px;
    }

    .upload-area {
        margin: 10px;
        padding: 30px 20px;
    }

    .upload-buttons {
        flex-direction: column;
        align-items: center;
    }

    .upload-buttons .btn {
        width: 100%;
        max-width: 200px;
    }

    /* 移动端搜索优化 */
    .search-container {
        margin-top: 8px;
    }

    #searchInput {
        padding: 10px 12px;
        font-size: 16px !important;
    }

    /* 移动端进度条优化 */
    #progressBar {
        height: 16px;
    }

    #progressBar::-webkit-slider-track {
        height: 16px;
        border-radius: 8px;
    }

    #progressBar::-webkit-slider-thumb {
        width: 22px;
        height: 22px;
        margin-top: -4px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 360px) {
    .announcement-bar {
        padding: 8px 12px;
        gap: 8px;
    }

    .announcement-text {
        font-size: 0.8rem;
        -webkit-line-clamp: 2;
        display: -webkit-box;
        white-space: normal;
        animation: none !important;
    }

    .announcement-text.scrollable {
        display: -webkit-box;
        white-space: normal;
        animation: none !important;
    }
}

.announcement-text.force-scroll {
    white-space: nowrap;
    animation: scrollText 25s linear infinite;
}

.announcement-text.force-multiline {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    white-space: normal;
    animation: none;
}

.song-item {
    animation: fadeIn 0.3s ease;
}

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

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

/* 底部备案信息 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 15px 25px;
    text-align: center;
}

.icp-info {
    font-size: 0.8rem;
    color: var(--text-light);
}

.icp-info a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.icp-info a:hover {
    color: var(--primary-color);
}

/* 移动端底部优化 */
@media (max-width: 480px) {
    .footer {
        padding: 12px 20px;
    }

    .icp-info {
        font-size: 0.75rem;
    }
}