:root {
    --bg-color: #0d1117;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-green: #3fb950;
    --accent-blue: #58a6ff;
    --border-color: #30363d;
    --panel-bg: #161b22;
    --dot-color: rgba(255, 255, 255, 0.05);
    
    --font-mono: 'VT323', monospace;
    --font-sans: 'Noto Sans SC', sans-serif;
}

body.theme-light {
    --bg-color: #f6f8fa;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --accent-green: #1a7f37;
    --accent-blue: #0969da;
    --border-color: #d0d7de;
    --panel-bg: #ffffff;
    --dot-color: rgba(0, 0, 0, 0.08);
}

body.theme-light .app-container {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

body.theme-light .avatar, 
body.theme-light .icon-btn.primary {
    background-color: #f3f4f6;
}

body.theme-light .theme-toggle .btn.active {
    background: var(--text-primary);
    color: var(--panel-bg);
}

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

body {
    background-color: var(--bg-color);
    background-image: radial-gradient(var(--dot-color) 1px, transparent 1px);
    background-size: 15px 15px;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-container {
    width: 100%;
    max-width: 900px;
    height: 90vh;
    max-height: 800px;
    background-color: rgba(13, 17, 23, 0.95);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    overflow: hidden;
}

/* 左右布局容器 */
.main-content {
    display: flex;
    flex-grow: 1;
    gap: 30px;
    overflow: hidden;
    margin-bottom: 20px;
}

.left-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 350px;
    border-right: 1px solid var(--border-color);
    padding-right: 30px;
    min-height: 0; /* 关键：防止子元素内容撑破容器，使其能正确计算溢出和滚动 */
}

.right-panel {
    flex: 1.5;
    display: flex;
    flex-direction: column;
    min-width: 400px;
    min-height: 0;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

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

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #232a35;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.logo h1 {
    font-family: var(--font-mono);
    font-size: 24px;
    letter-spacing: 2px;
    color: var(--text-primary);
    font-weight: normal;
}

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

.btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 10px;
    cursor: pointer;
    text-transform: uppercase;
    font-weight: 600;
}

.btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.theme-toggle {
    display: flex;
    background: var(--panel-bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.theme-toggle .btn {
    border: none;
    border-radius: 0;
}

.theme-toggle .btn.active {
    background: var(--text-primary);
    color: var(--bg-color);
}

/* Clock Section */
.clock-section {
    text-align: center;
    margin-bottom: 20px;
}

.digital-clock {
    font-family: var(--font-mono);
    font-size: 64px;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: 5px;
    margin-bottom: 5px;
}

.date-info {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--accent-green);
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    background: rgba(63, 185, 80, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
}

.dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-green);
    border-radius: 50%;
    animation: blink 1s infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Player Section */
.player-section {
    background: var(--panel-bg);
    border-radius: 15px;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.player-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.equalizer {
    display: flex;
    gap: 3px;
    height: 15px;
    align-items: flex-end;
}

.bar {
    width: 4px;
    background-color: var(--accent-green);
    border-radius: 2px;
}

.bar1 { height: 10px; animation: eq 1s infinite; }
.bar2 { height: 15px; animation: eq 1.2s infinite; }
.bar3 { height: 8px; animation: eq 0.8s infinite; }

@keyframes eq {
    50% { height: 4px; }
}

.track-details {
    flex-grow: 1;
}

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

.track-status {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.player-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 15px;
}

.main-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.control-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
}

.control-btn:hover {
    color: var(--text-primary);
}

.control-text {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
}

.volume-slider {
    flex-grow: 1;
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    background: var(--border-color);
    border-radius: 2px;
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.time-text {
    font-family: var(--font-mono);
    font-size: 12px;
}

.progress-bar-bg {
    flex-grow: 1;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--text-primary);
    width: 0%;
}

/* Divider & Queue */
.section-divider {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.live-channel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.channel-name {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 16px;
}

.hollow-dot {
    width: 8px;
    height: 8px;
    border: 2px solid var(--accent-green);
    border-radius: 50%;
}

.channel-status {
    color: var(--accent-green);
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
}

.connection-status {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

/* Playlist Section */
.playlist {
    list-style: none;
    flex-grow: 1;
    overflow-y: auto;
    padding-right: 5px;
    margin-bottom: 10px;
}

.playlist::-webkit-scrollbar {
    width: 4px;
}
.playlist::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.playlist-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    margin-bottom: 10px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.playlist-item:hover {
    border-color: var(--text-primary);
    transform: translateX(4px);
    box-shadow: -4px 4px 0 rgba(63, 185, 80, 0.1);
}

.playlist-item.active {
    border-color: var(--accent-green);
    background: rgba(63, 185, 80, 0.05);
}

.playlist-item .song-info {
    display: flex;
    flex-direction: column;
}

.playlist-item .s-name {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 2px;
}

.playlist-item .s-artist {
    color: var(--text-secondary);
    font-size: 12px;
    font-family: var(--font-mono);
}

.playlist-item .play-icon {
    color: var(--accent-green);
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.2s;
}

.playlist-item:hover .play-icon, 
.playlist-item.active .play-icon {
    opacity: 1;
}

/* Chat Section */
.chat-section {
    flex-grow: 1;
    overflow-y: auto;
    margin-bottom: 20px;
    padding-right: 5px;
}

.chat-section::-webkit-scrollbar {
    width: 4px;
}
.chat-section::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.chat-message {
    background: var(--panel-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

.message-header {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 15px;
}

.message-content {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.6;
}

.message-meta {
    display: flex;
    align-items: center;
    gap: 15px;
}

.msg-time {
    font-family: var(--font-mono);
    font-size: 12px;
}

.replay-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 12px;
    cursor: pointer;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 5px;
}

.replay-btn:hover {
    color: var(--text-primary);
}

/* Input Section */
.input-section {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.input-box {
    flex-grow: 1;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
}

.input-box input {
    width: 100%;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 14px;
    outline: none;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn.primary {
    background: #232a35;
    color: var(--text-primary);
}

.icon-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

/* Footer */
.footer {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
}