/**
 * Music Scraper - 移动端样式
 * 移动端专属布局和组件
 */

/* ==================== 状态栏背景填充 ==================== */
/* 确保 iOS Safari 状态栏区域有正确的背景色 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--safe-area-top);
    background: var(--bg-primary);
    z-index: 9999;
}

/* ==================== 应用容器 ==================== */
.app-container {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh; /* 动态视口高度，更好的移动端支持 */
    padding-top: var(--safe-area-top);
    padding-bottom: calc(var(--safe-area-bottom) + 20px);
    z-index: 1;
    display: flex;
    flex-direction: column;
}

/* ==================== 顶部导航栏 ==================== */
.app-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--gradient-header);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-sticky);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 60px;
}

/* 返回按钮链接 */
.header-back {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-cyan);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.header-back svg {
    width: 24px;
    height: 24px;
}

.header-back:hover {
    background: color-mix(in srgb, var(--neon-cyan) 10%, transparent);
}

.header-back:active {
    transform: scale(0.9);
}

.header-title {
    flex: 1;
    text-align: center;
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    text-shadow: var(--glow-text);
}

/* 返回按钮 */
.btn-back {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-cyan);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.btn-back:hover {
    background: color-mix(in srgb, var(--neon-cyan) 10%, transparent);
    color: var(--neon-pink);
}

.btn-back:active {
    background: color-mix(in srgb, var(--neon-cyan) 20%, transparent);
    transform: scale(0.95);
}

/* ==================== 主内容区 ==================== */
.main-content {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch; /* iOS 平滑滚动 */
}

/* ==================== Logo ==================== */
.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl) 0;
}

.logo-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.logo-tagline {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ==================== 功能卡片 ==================== */
.feature-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, color-mix(in srgb, var(--neon-cyan) 20%, transparent), color-mix(in srgb, var(--neon-purple) 20%, transparent));
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--neon-cyan);
}

.feature-content {
    flex: 1;
    min-width: 0;
}

.feature-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.feature-arrow {
    width: 24px;
    height: 24px;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* ==================== 统计卡片 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.stat-value {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--neon-cyan);
    text-shadow: var(--glow-text);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* ==================== 文件浏览器 ==================== */
.file-browser {
    flex: 1;
}

/* 路径导航 */
.path-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-input);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
}

.path-nav::-webkit-scrollbar {
    display: none;
}

.path-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background: var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.path-item:hover,
.path-item.active {
    color: var(--neon-cyan);
    background: color-mix(in srgb, var(--neon-cyan) 10%, transparent);
}

.path-separator {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* 文件列表 */
.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-item:active {
    transform: scale(0.98);
}

.file-item.selected {
    border-color: var(--neon-cyan);
    background: color-mix(in srgb, var(--neon-cyan) 5%, transparent);
}

.file-item-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.file-item-icon.folder {
    background: linear-gradient(135deg, color-mix(in srgb, var(--neon-orange) 20%, transparent), color-mix(in srgb, var(--neon-orange) 15%, transparent));
    color: var(--neon-orange);
}

.file-item-icon.music {
    background: linear-gradient(135deg, color-mix(in srgb, var(--neon-cyan) 20%, transparent), color-mix(in srgb, var(--neon-purple) 20%, transparent));
    color: var(--neon-cyan);
}

.file-item-icon svg {
    width: 24px;
    height: 24px;
}

.file-item-info {
    flex: 1;
    min-width: 0;
}

.file-item-name {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.file-item-meta {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.file-item-check {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.file-item.selected .file-item-check {
    background: var(--neon-cyan);
    border-color: var(--neon-cyan);
    color: var(--text-inverse);
}

/* ==================== 音乐项（带封面） ==================== */
.music-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.music-item:active {
    transform: scale(0.98);
}

.music-cover {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
}

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

.music-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.music-cover-placeholder svg {
    width: 28px;
    height: 28px;
    color: var(--text-tertiary);
}

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

.music-title {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.music-artist {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.music-status {
    flex-shrink: 0;
}

/* ==================== 底部操作栏 ==================== */
.bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
    background: var(--gradient-header);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    z-index: var(--z-sticky);
}

.bottom-bar-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.bottom-bar .btn {
    flex: 1;
}

/* 选择计数 */
.select-count {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.select-count strong {
    color: var(--neon-cyan);
}

/* ==================== 迷你播放条 ==================== */
.player-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    padding: 0 var(--spacing-md);
    padding-bottom: var(--safe-area-bottom);
    background: var(--gradient-modal);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: var(--z-sticky);
}

.player-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

.player-cover {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

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

.player-title {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
}

.player-artist {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.player-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.player-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.player-btn:active {
    background: var(--border-color);
}

.player-btn.play {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: var(--text-inverse);
}

/* ==================== 搜索结果列表 ==================== */
.search-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.search-result-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.search-result-cover {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

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

.search-result-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.search-result-meta {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.search-result-source {
    display: inline-flex;
}

/* ==================== 元数据编辑表单 ==================== */
.metadata-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 封面预览 */
.cover-preview {
    width: 100%;
    aspect-ratio: 1;
    max-width: 200px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
}

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

.cover-preview-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: var(--bg-secondary);
    color: var(--text-tertiary);
}

.cover-preview-placeholder svg {
    width: 48px;
    height: 48px;
}

/* ==================== 弹窗 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    width: 100%;
    max-height: 90vh;
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    padding: var(--spacing-lg);
    padding-bottom: calc(var(--spacing-lg) + var(--safe-area-bottom));
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-handle {
    width: 40px;
    height: 4px;
    background: var(--border-color);
    border-radius: var(--radius-full);
    margin: 0 auto var(--spacing-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
}

/* ==================== Toast 提示 ==================== */
.toast-container {
    position: fixed;
    top: calc(var(--safe-area-top) + 60px);
    left: var(--spacing-md);
    right: var(--spacing-md);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: slideInDown 0.3s ease forwards;
}

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--text-primary);
}

.toast.success { border-color: var(--color-success); }
.toast.success .toast-icon { color: var(--color-success); }

.toast.error { border-color: var(--color-error); }
.toast.error .toast-icon { color: var(--color-error); }

.toast.warning { border-color: var(--color-warning); }
.toast.warning .toast-icon { color: var(--color-warning); }

.toast.info { border-color: var(--color-info); }
.toast.info .toast-icon { color: var(--color-info); }

/* Toast 退出动画 */
.toast.leaving {
    animation: fadeInUp 0.3s ease reverse forwards;
}

/* ==================== 设置页面 ==================== */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-sm);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
}

.settings-item-info {
    flex: 1;
}

.settings-item-label {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.settings-item-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

/* 开关 */
.toggle {
    width: 52px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    padding: 2px;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.toggle.active {
    background: var(--neon-cyan);
}

.toggle-handle {
    width: 28px;
    height: 28px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.toggle.active .toggle-handle {
    transform: translateX(20px);
}