/**
 * Focus Mode Styles
 * 专注模式样式
 * @version 2.0.0
 */

/* 专注模式覆盖层 */
.focus-mode-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    cursor: none;
}

.focus-mode-overlay.active {
    opacity: 1;
}

/* 隐藏主要UI元素当专注模式激活时 */
.focus-mode-active .header,
.focus-mode-active .category-section,
.focus-mode-active .audio-player {
    opacity: 0;
    pointer-events: none;
}

/* 中央播放/暂停按钮 */
.focus-center-play-btn {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 3px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.focus-center-play-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
}

.focus-center-play-btn:active {
    transform: scale(0.95);
}

/* 底部迷你控制栏 */
.focus-mini-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.4s ease-in-out;
}

.focus-mini-controls.show {
    opacity: 1;
    transform: translateY(0);
}

/* 曲目信息 */
.focus-track-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    color: white;
    max-width: 300px;
}

.focus-track-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.focus-track-category {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* 控制按钮组 */
.focus-control-buttons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.focus-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.focus-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.05);
}

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

.focus-play-btn {
    width: 60px;
    height: 60px;
    font-size: 24px;
    border-width: 3px;
}

/* 音量控制 */
.focus-volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 20px;
}

.focus-volume-slider {
    width: 120px;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.2);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.focus-volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.focus-volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.focus-volume-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.focus-volume-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* 退出按钮 */
.focus-exit-btn {
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid rgba(239, 68, 68, 0.5);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.focus-exit-btn:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.7);
    transform: scale(1.05);
}

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

/* 提示文字 */
.focus-hint-text {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    text-align: center;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    pointer-events: none;
}

.focus-hint-text.show {
    opacity: 1;
}

/* 专注模式图标高亮 */
#focusModeToggle.active {
    background: rgba(102, 102, 255, 0.2);
    color: #6666ff;
}

/* 移动端优化 */
@media (max-width: 768px) {
    /* 中央播放按钮 */
    .focus-center-play-btn {
        width: 100px;
        height: 100px;
        font-size: 40px;
    }

    /* 底部控制栏 */
    .focus-mini-controls {
        height: auto;
        padding: 20px 15px;
        flex-wrap: wrap;
        gap: 15px;
    }

    /* 曲目信息 */
    .focus-track-info {
        width: 100%;
        max-width: none;
        order: 1;
        text-align: center;
    }

    .focus-track-title {
        font-size: 16px;
    }

    .focus-track-category {
        font-size: 12px;
    }

    /* 控制按钮组 */
    .focus-control-buttons {
        width: 100%;
        order: 2;
        justify-content: center;
        gap: 10px;
    }

    .focus-btn {
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    .focus-play-btn {
        width: 55px;
        height: 55px;
        font-size: 22px;
    }

    /* 音量控制 */
    .focus-volume-control {
        width: 100%;
        order: 3;
        justify-content: center;
    }

    .focus-volume-slider {
        flex: 1;
        max-width: 200px;
    }

    /* 退出按钮 */
    .focus-exit-btn {
        width: 100%;
        order: 4;
        padding: 10px 20px;
        font-size: 13px;
    }

    /* 提示文字 */
    .focus-hint-text {
        top: 20px;
        font-size: 12px;
        padding: 0 20px;
    }
}

/* 平板端优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .focus-center-play-btn {
        width: 110px;
        height: 110px;
        font-size: 44px;
    }

    .focus-mini-controls {
        padding: 0 30px;
    }

    .focus-track-info {
        max-width: 250px;
    }
}

/* 横屏模式 */
@media (max-width: 768px) and (orientation: landscape) {
    .focus-mini-controls {
        height: 80px;
        padding: 10px 20px;
        flex-wrap: nowrap;
    }

    .focus-track-info {
        width: auto;
        flex: 1;
        text-align: left;
    }

    .focus-control-buttons {
        width: auto;
        flex: 0 0 auto;
    }

    .focus-volume-control {
        width: auto;
        flex: 0 0 auto;
    }

    .focus-exit-btn {
        width: auto;
        padding: 8px 16px;
        font-size: 12px;
    }

    .focus-center-play-btn {
        width: 80px;
        height: 80px;
        font-size: 32px;
    }
}

/* 暗色主题适配 */
[data-theme="dark"] .focus-mode-overlay {
    background: rgba(0, 0, 0, 0.98);
}

[data-theme="dark"] .focus-center-play-btn {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

/* 亮色主题适配 */
[data-theme="light"] .focus-mode-overlay {
    background: rgba(255, 255, 255, 0.98);
}

[data-theme="light"] .focus-center-play-btn {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.2);
    color: #333;
}

[data-theme="light"] .focus-mini-controls {
    background: linear-gradient(to top, rgba(255, 255, 255, 0.9), transparent);
}

[data-theme="light"] .focus-track-title,
[data-theme="light"] .focus-btn,
[data-theme="light"] .focus-volume-control {
    color: #333;
}

[data-theme="light"] .focus-track-category {
    color: rgba(0, 0, 0, 0.6);
}

[data-theme="light"] .focus-hint-text {
    color: rgba(0, 0, 0, 0.5);
}

/* 无障碍支持 - 减少动画 */
@media (prefers-reduced-motion: reduce) {
    .focus-mode-overlay,
    .focus-mini-controls,
    .focus-hint-text,
    .focus-center-play-btn,
    .focus-btn,
    .focus-exit-btn {
        transition: none;
    }

    .focus-center-play-btn:hover,
    .focus-btn:hover,
    .focus-exit-btn:hover {
        transform: none;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .focus-center-play-btn {
        border-width: 4px;
        border-color: white;
    }

    .focus-btn {
        border-width: 3px;
        border-color: white;
    }

    .focus-exit-btn {
        border-width: 3px;
    }
}

/* 焦点样式 */
.focus-center-play-btn:focus,
.focus-btn:focus,
.focus-exit-btn:focus {
    outline: 3px solid rgba(102, 102, 255, 0.8);
    outline-offset: 3px;
}

.focus-volume-slider:focus {
    outline: 2px solid rgba(102, 102, 255, 0.8);
    outline-offset: 2px;
}

/* 加载动画 */
@keyframes focusPulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

.focus-mode-overlay.loading .focus-center-play-btn {
    animation: focusPulse 2s ease-in-out infinite;
}

/* 打印模式 - 隐藏专注模式 */
@media print {
    .focus-mode-overlay {
        display: none !important;
    }
}

/* 触摸设备优化 */
@media (pointer: coarse) {
    .focus-center-play-btn {
        width: 110px;
        height: 110px;
    }

    .focus-btn {
        width: 55px;
        height: 55px;
        font-size: 22px;
    }

    .focus-play-btn {
        width: 65px;
        height: 65px;
        font-size: 26px;
    }

    /* 增大触摸目标 */
    .focus-exit-btn {
        padding: 15px 30px;
        font-size: 15px;
    }
}