/* 基础样式设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    /* 浅色模式颜色 */
    --bg-light-primary: linear-gradient(145deg, #f7f4f0, #faf5f2);
    --text-light-primary: #2c3e50;
    --text-light-secondary: #7f8c8d;
    --ui-light-accent: #3498db;
    --ui-light-secondary: #e9ecef;
    --card-light-bg: rgba(255, 255, 255, 0.7);
    --card-light-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    --record-light-color: linear-gradient(145deg, #2980b9, #3498db);
    --record-light-label: #f8f9fa;
    
    /* 深色模式颜色 */
    --bg-dark-primary: linear-gradient(145deg, #1a1e2e, #101426);
    --text-dark-primary: #ecf0f1;
    --text-dark-secondary: #bdc3c7;
    --ui-dark-accent: #3498db;
    --ui-dark-secondary: #2c3e50;
    --card-dark-bg: rgba(44, 62, 80, 0.7);
    --card-dark-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    --record-dark-color: linear-gradient(145deg, #2c3e50, #3498db);
    --record-dark-label: #2c3e50;
    
    /* 共用变量 */
    --border-radius-large: 28px;
    --border-radius-medium: 16px;
    --border-radius-small: 10px;
    --transition-standard: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: var(--bg-dark-primary);
        --text-primary: var(--text-dark-primary);
        --text-secondary: var(--text-dark-secondary);
        --ui-accent: var(--ui-dark-accent);
        --ui-secondary: var(--ui-dark-secondary);
        --card-bg: var(--card-dark-bg);
        --card-shadow: var(--card-dark-shadow);
        --record-color: var(--record-dark-color);
        --record-label: var(--record-dark-label);
    }
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: var(--bg-light-primary);
        --text-primary: var(--text-light-primary);
        --text-secondary: var(--text-light-secondary);
        --ui-accent: var(--ui-light-accent);
        --ui-secondary: var(--ui-light-secondary);
        --card-bg: var(--card-light-bg);
        --card-shadow: var(--card-light-shadow);
        --record-color: var(--record-light-color);
        --record-label: var(--record-light-label);
    }
}

body, html {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
    height: 100%;
    background-color: #f5f5f7;
    color: var(--text-primary);
    line-height: 1.5;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

/* 容器样式 */
.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* iPhone 设备模型 */
.iphone-model {
    position: relative;
    width: 375px;
    height: 812px;
    background: #1a1a1a;
    border-radius: 55px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2),
                0 0 0 1px rgba(255, 255, 255, 0.1),
                inset 0 0 0 2px rgba(255, 255, 255, 0.05);
    padding: 12px;
    /* 设备光影效果 */
    background: linear-gradient(to bottom right, #2c2c2c 0%, #1a1a1a 40%, #0a0a0a 100%);
    transition: var(--transition-standard);
}

.iphone-model:before {
    content: '';
    position: absolute;
    width: 150px;
    height: 30px;
    background: #0a0a0a;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    border-bottom-left-radius: 18px;
    border-bottom-right-radius: 18px;
    z-index: 3;
}

/* iPhone 屏幕 */
.iphone-screen {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 45px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 状态栏 */
.status-bar {
    height: 44px;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    position: relative;
    z-index: 10;
}

.time {
    font-weight: 600;
    font-size: 14px;
}

.status-icons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.signal-icon {
    display: flex;
    align-items: flex-end;
    height: 12px;
    gap: 1px;
}

.signal-icon .bar {
    width: 3px;
    background-color: var(--text-primary);
    border-radius: 1px;
}

.signal-icon .bar:nth-child(1) {
    height: 4px;
}

.signal-icon .bar:nth-child(2) {
    height: 6px;
}

.signal-icon .bar:nth-child(3) {
    height: 8px;
}

.signal-icon .bar:nth-child(4) {
    height: 10px;
}

.wifi-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 12px;
    width: 14px;
    position: relative;
}

.wifi-icon .wave {
    position: absolute;
    bottom: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    border: 1px solid transparent;
    border-top-color: var(--text-primary);
    transform: rotate(135deg);
}

.wifi-icon .wave:nth-child(2) {
    width: 10px;
    height: 10px;
}

.wifi-icon .wave:nth-child(3) {
    width: 14px;
    height: 14px;
}

.battery-icon {
    width: 22px;
    height: 12px;
    border: 1px solid var(--text-primary);
    border-radius: 3px;
    padding: 1px;
    position: relative;
}

.battery-icon:after {
    content: '';
    position: absolute;
    width: 2px;
    height: 4px;
    background: var(--text-primary);
    right: -3px;
    top: 50%;
    transform: translateY(-50%);
    border-top-right-radius: 2px;
    border-bottom-right-radius: 2px;
}

.battery-icon .battery-level {
    height: 100%;
    width: 70%;
    background-color: var(--text-primary);
    border-radius: 1px;
}

/* APP 内容 */
.app-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 10px 20px 20px;
    position: relative;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    margin-bottom: 20px;
}

.app-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition-standard);
}

.settings-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* 中心播放区域 */
.playback-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px 0 30px;
}

.record-player {
    width: 230px;
    height: 230px;
    position: relative;
    margin-bottom: 20px;
}

.record {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--record-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: rotating 20s linear infinite;
    animation-play-state: running;
    position: relative;
    overflow: hidden;
}

.record:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-radial-gradient(
        circle at center,
        transparent 0,
        transparent 5px,
        rgba(0, 0, 0, 0.1) 5px,
        rgba(0, 0, 0, 0.1) 7px
    );
    border-radius: 50%;
    opacity: 0.2;
}

.record-label {
    width: 80px;
    height: 80px;
    background-color: var(--record-label);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    z-index: 2;
}

.play-button {
    width: 60px;
    height: 60px;
    background-color: var(--ui-accent);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-standard);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.play-icon {
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 16px;
    border-color: transparent transparent transparent white;
    margin-left: 3px;
}

.sound-name {
    font-size: 22px;
    font-weight: 500;
    margin-top: 10px;
    background: linear-gradient(90deg, var(--ui-accent), #9b59b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

/* 白噪音选择区域 */
.sound-selection {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 30px;
}

.sound-card {
    width: calc(20% - 10px);
    aspect-ratio: 1;
    background: var(--card-bg);
    border-radius: var(--border-radius-medium);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-standard);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    padding: 10px;
}

.sound-card.active {
    box-shadow: 0 0 0 2px var(--ui-accent), var(--card-shadow);
    transform: translateY(-2px);
}

.sound-icon {
    font-size: 24px;
    margin-bottom: 8px;
}

.sound-label {
    font-size: 12px;
    font-weight: 500;
    text-align: center;
    color: var(--text-primary);
}

/* 底部控制栏 */
.bottom-controls {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-icon {
    font-size: 18px;
    color: var(--text-secondary);
}

.slider-container {
    flex: 1;
    height: 36px;
    display: flex;
    align-items: center;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--ui-secondary);
    outline: none;
    transition: var(--transition-standard);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--ui-accent);
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: var(--transition-standard);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.timer-options {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.timer-btn {
    flex: 1;
    background: var(--card-bg);
    border: none;
    border-radius: var(--border-radius-small);
    padding: 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-standard);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.timer-btn.active {
    background-color: var(--ui-accent);
    color: white;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

/* 底部指示器 */
.home-indicator {
    width: 120px;
    height: 5px;
    background-color: var(--text-secondary);
    border-radius: 2.5px;
    margin: 10px auto;
    opacity: 0.5;
}

/* 动画定义 */
@keyframes rotating {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 媒体查询适配 */
@media (max-width: 500px) {
    .iphone-model {
        width: 100%;
        height: 100vh;
        border-radius: 0;
        padding: 0;
    }
    
    .iphone-screen {
        border-radius: 0;
    }
    
    .iphone-model:before {
        display: none;
    }
    
    .record-player {
        width: 200px;
        height: 200px;
    }
    
    .sound-selection {
        justify-content: center;
    }
    
    .sound-card {
        width: calc(33.33% - 10px);
    }
}

/* 自定义动画效果 */
.record-player:hover .record {
    animation-play-state: running;
}

.record-player:active .play-button {
    transform: scale(0.95);
}

.sound-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.settings-btn:active,
.play-button:active,
.timer-btn:active {
    transform: scale(0.95);
}