/**
 * WebRTC 录音工具 - Notion 风格样式
 * 支持系统主题自动切换（light/dark）
 */

/* ==================== CSS 变量 - 主题系统 ==================== */
:root {
    /* 通用 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --transition: all 0.15s ease;
    
    /* 浅色主题（默认） */
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f5;
    --bg-tertiary: #edece9;
    --bg-hover: rgba(55, 53, 47, 0.08);
    --bg-active: rgba(55, 53, 47, 0.16);
    
    --text-primary: #37352f;
    --text-secondary: #787774;
    --text-tertiary: #9b9a97;
    
    --border-color: rgba(55, 53, 47, 0.09);
    --border-color-strong: rgba(55, 53, 47, 0.16);
    
    --accent-color: #2383e2;
    --accent-hover: #1a6fc9;
    --accent-light: rgba(35, 131, 226, 0.1);
    
    --success-color: #0f7b6c;
    --success-bg: rgba(15, 123, 108, 0.1);
    
    --danger-color: #e03e3e;
    --danger-bg: rgba(224, 62, 62, 0.1);
    
    --warning-color: #dfab01;
    --warning-bg: rgba(223, 171, 1, 0.1);
    
    /* 录音相关 */
    --record-color: #eb5757;
    --meter-gradient: linear-gradient(90deg, #0f7b6c, #dfab01, #eb5757);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* 深色主题 - 跟随系统 */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #191919;
        --bg-secondary: #202020;
        --bg-tertiary: #2f2f2f;
        --bg-hover: rgba(255, 255, 255, 0.055);
        --bg-active: rgba(255, 255, 255, 0.1);
        
        --text-primary: rgba(255, 255, 255, 0.9);
        --text-secondary: rgba(255, 255, 255, 0.6);
        --text-tertiary: rgba(255, 255, 255, 0.4);
        
        --border-color: rgba(255, 255, 255, 0.094);
        --border-color-strong: rgba(255, 255, 255, 0.16);
        
        --accent-color: #529cca;
        --accent-hover: #68afd6;
        --accent-light: rgba(82, 156, 202, 0.15);
        
        --success-color: #4dab9a;
        --success-bg: rgba(77, 171, 154, 0.15);
        
        --danger-color: #ff6b6b;
        --danger-bg: rgba(255, 107, 107, 0.15);
        
        --warning-color: #f5c542;
        --warning-bg: rgba(245, 197, 66, 0.15);
        
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
}

/* ==================== 重置和基础 ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== 主布局 - 两栏结构 ==================== */
.app {
    display: flex;
    height: 100vh;
    max-height: 100vh;
}

/* 左侧边栏 */
.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    margin-bottom: 8px;
}

.logo-icon {
    font-size: 24px;
}

.logo-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 面板卡片 */
.panel {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 14px;
}

.panel-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

/* ==================== 音频源开关 ==================== */
.source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.toggle-input {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 36px;
    height: 20px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    transition: var(--transition);
}

.toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: var(--bg-primary);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.toggle-input:checked + .toggle-slider {
    background: var(--accent-color);
}

.toggle-input:checked + .toggle-slider::after {
    transform: translateX(16px);
}

.toggle-text {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

/* 状态徽章 */
.status-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.status-badge.connected {
    background: var(--success-bg);
    color: var(--success-color);
}

.status-badge.recording {
    background: var(--danger-bg);
    color: var(--danger-color);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* 下拉选择框 */
.select-input {
    width: 100%;
    padding: 8px 12px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    outline: none;
    cursor: pointer;
    transition: var(--transition);
    margin: 8px 0;
}

.select-input:hover {
    border-color: var(--border-color-strong);
}

.select-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* 提示文字 */
.hint-text {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 8px;
    line-height: 1.4;
}

/* ==================== 音频电平表 ==================== */
.meter-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.meter-label {
    font-size: 12px;
    color: var(--text-secondary);
    width: 50px;
    flex-shrink: 0;
}

.meter-track {
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    width: 0%;
    background: var(--meter-gradient);
    border-radius: 3px;
    transition: width 0.1s ease-out;
}

/* ==================== 主内容区 ==================== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px 32px;
    gap: 20px;
    overflow-y: auto;
}

/* 录音控制面板 */
.recorder-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

/* 计时器显示 */
.timer-display {
    font-size: 48px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    letter-spacing: -1px;
}

/* 按钮组 */
.button-row {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon {
    font-size: 12px;
}

.btn-record {
    background: var(--record-color);
    color: white;
}

.btn-record:hover:not(:disabled) {
    filter: brightness(1.1);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
}

.btn-stop {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-stop:hover:not(:disabled) {
    background: var(--danger-bg);
    color: var(--danger-color);
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger-color);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger-color);
    color: white;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

/* ==================== 录音列表 ==================== */
.recordings-panel {
    flex: 1;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 16px 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.recordings-list {
    flex: 1;
    overflow-y: auto;
}

.empty-message {
    color: var(--text-tertiary);
    text-align: center;
    padding: 40px 20px;
    font-size: 13px;
}

/* 录音项 */
.recording-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
}

.recording-item:last-child {
    border-bottom: none;
}

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

.recording-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    word-break: break-word;
}

.recording-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.recording-player {
    width: 100%;
    max-width: 280px;
    height: 32px;
    border-radius: var(--border-radius);
}

.recording-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ==================== 响应式适配 ==================== */
@media (max-width: 900px) {
    .app {
        flex-direction: column;
        overflow-y: auto;
    }
    
    .sidebar {
        width: 100%;
        min-width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-content {
        padding: 16px;
    }
}

/* 13寸 MacBook Air 适配 (1440x900 或 1280x800 缩放) */
@media (max-height: 800px) {
    .sidebar {
        padding: 12px;
        gap: 12px;
    }
    
    .panel {
        padding: 12px;
    }
    
    .panel-title {
        margin-bottom: 8px;
    }
    
    .main-content {
        padding: 16px 24px;
        gap: 16px;
    }
    
    .recorder-panel {
        padding: 16px;
        gap: 14px;
    }
    
    .timer-display {
        font-size: 40px;
    }
    
    .recordings-panel {
        padding: 12px 16px;
    }
}