/*!
 * Apple-inspired Minimalist UI for Sight-Reading Generator
 * IC Studio 视奏工具 - 专业级视奏旋律生成器
 * 
 * Copyright © 2025. All rights reserved. Igor Chen - icstudio.club
 * 
 * Author: Igor Chen
 * Website: https://icstudio.club
 * Email: service@icstudio.club
 * 
 * Version: 20250908 - Updated for cache control
 */
:root {
    /* Apple-style color palette - Light Mode */
    --primary-blue: #007AFF;
    --secondary-blue: #5AC8FA;
    --neutral-white: #FFFFFF;
    --neutral-light: #F2F2F7;
    --neutral-medium: #C7C7CC;
    --neutral-dark: #8E8E93;
    --neutral-black: #1D1D1F;
    --accent-green: #34C759;
    --accent-orange: #FF9500;
    --accent-purple: #AF52DE;
    --background-blur: rgba(255, 255, 255, 0.8);
    --card-shadow: rgba(0, 0, 0, 0.04);
    --card-shadow-hover: rgba(0, 0, 0, 0.08);
    --card-shadow-focus: rgba(0, 122, 255, 0.15);
    --border-color: rgba(0, 0, 0, 0.06);
    --border-color-medium: rgba(0, 0, 0, 0.08);
    --body-bg: #f5f5f7;
    
    /* Typography system */
    --font-system: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, Menlo, monospace;
}

/* Dark mode color palette - Apple-inspired blue-gray theme */
[data-theme="dark"] {
    --primary-blue: #0A84FF;
    --secondary-blue: #64D2FF;
    --neutral-white: #2C2C2E;      /* Cards/containers */
    --neutral-light: #3A3A3C;      /* Slightly lighter containers */
    --neutral-medium: #48484A;     /* Input fields, borders */
    --neutral-dark: #8E8E93;       /* Secondary text */
    --neutral-black: #F2F2F7;      /* Primary text */
    --accent-green: #32D74B;
    --accent-orange: #FF9F0A;
    --accent-purple: #BF5AF2;
    --background-blur: rgba(44, 44, 46, 0.8);
    --card-shadow: rgba(0, 0, 0, 0.4);
    --card-shadow-hover: rgba(0, 0, 0, 0.6);
    --card-shadow-focus: rgba(10, 132, 255, 0.3);
    --border-color: rgba(255, 255, 255, 0.15);
    --border-color-medium: rgba(255, 255, 255, 0.25);
    --body-bg: #1D1D1F;            /* Apple-style dark gray background */
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    background: var(--body-bg);
    background-image: 
        /* 音符装饰 - 圆形音符头 */
        radial-gradient(circle at 15% 20%, rgba(0, 0, 0, 0.06) 1px, transparent 1px),
        radial-gradient(circle at 85% 35%, rgba(0, 0, 0, 0.05) 1.5px, transparent 1.5px),
        radial-gradient(circle at 25% 70%, rgba(0, 0, 0, 0.06) 1px, transparent 1px),
        radial-gradient(circle at 75% 85%, rgba(0, 0, 0, 0.05) 1.5px, transparent 1.5px),
        radial-gradient(circle at 45% 15%, rgba(0, 0, 0, 0.06) 1px, transparent 1px),
        radial-gradient(circle at 65% 60%, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
        /* 五线谱线条暗示 */
        linear-gradient(90deg, rgba(0, 0, 0, 0.025) 1px, transparent 1px),
        /* 骰子点装饰 */
        radial-gradient(circle at 10% 10%, rgba(0, 0, 0, 0.035) 2px, transparent 2px),
        radial-gradient(circle at 90% 20%, rgba(0, 0, 0, 0.035) 2px, transparent 2px),
        radial-gradient(circle at 20% 90%, rgba(0, 0, 0, 0.035) 2px, transparent 2px),
        radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.035) 2px, transparent 2px),
        radial-gradient(circle at 50% 45%, rgba(0, 0, 0, 0.03) 1.5px, transparent 1.5px),
        /* 音乐符号形状暗示 */
        linear-gradient(45deg, rgba(0, 0, 0, 0.015) 0.5px, transparent 0.5px),
        linear-gradient(-45deg, rgba(0, 0, 0, 0.015) 0.5px, transparent 0.5px);
    background-size: 
        /* 音符大小 */
        200px 200px, 250px 250px, 180px 180px, 220px 220px, 160px 160px, 190px 190px,
        /* 五线谱 */
        100% 60px,
        /* 骰子点 */
        150px 150px, 180px 180px, 200px 200px, 160px 160px, 120px 120px,
        /* 音乐符号 */
        80px 80px, 80px 80px;
    background-position: 
        /* 音符位置 */
        0 0, 20px 30px, 40px 60px, 60px 90px, 80px 20px, 100px 50px,
        /* 五线谱位置 */
        0 0,
        /* 骰子点位置 */
        0 0, 30px 40px, 50px 70px, 70px 10px, 90px 80px,
        /* 音乐符号位置 */
        10px 10px, 10px 10px;
    background-repeat: repeat;
    min-height: 100vh;
    padding: 20px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: #ffffff;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: 18px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px var(--card-shadow);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    z-index: 1;
    border-top: 8px solid #007bff58/* base accent line */
}



/* Header - Apple style */
.header {
    background: #007bff05;
    color: #1d1d1f;
    padding: 40px 30px;
    text-align: center;
    border-bottom: 1px solid #d2d2d7;
}


.header h1 {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    font-size: 3.2rem;
    margin-bottom: 12px;
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #1d1d1f;
}

.header p {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    color: #86868b;
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: -0.022em;
    line-height: 1.381;
}

/* Controls section with Apple card styling */
.controls {
    padding: 30px;
    background: #fbfbfd;
    border-bottom: 1px solid #d2d2d7;
}

.control-row {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 24px;
    align-items: flex-start;
    background: #fbfbfd;
}

.control-row:last-of-type {
    justify-content: center;
    margin-bottom: 0;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-width: 160px;
}

.control-group label {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    font-weight: 400;
    color: #1d1d1f;
    font-size: 1rem;
    letter-spacing: 0.01em;
}

/* Apple-style form controls */
select, input {
    font-family: var(--font-system);
    padding: 14px 18px;
    border: 1px solid var(--border-color-soft);
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 400;
    color: #1d1d1f;
    background: #ffffff !important;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

select:focus, input:focus {
    outline: none;
    border-color: #007aff;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
    background: #ffffff !important;
    transform: translateY(-1px);
}

select:hover, input:hover {
    border-color: var(--border-color-medium);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
    background: #ffffff !important;
    transform: translateY(-1px);
}

select:active, select:focus:active {
    background: #ffffff !important;
    border-color: #007aff;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}

select option {
    background: #ffffff !important;
    color: #1d1d1f !important;
}

/* Apple-style range slider */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: #d2d2d7;
    border-radius: 2px;
    padding: 0;
    border: none;
    transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: #ffffff;
    border: 4px solid #007aff;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.08),
        0 4px 16px rgba(0, 122, 255, 0.12);
}

input[type="range"]::-webkit-slider-thumb:hover {
    border-color: #0056cc;
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(0.95);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: #ffffff;
    border: 2px solid #007aff;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

/* Main page metronome toggle button */
.metronome-toggle-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    background: var(--primary-blue);
    border: none;
    border-radius: 50%;
    color: #FFFFFF;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.metronome-toggle-btn:hover {
    background: #005FCC;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.4);
}

.metronome-toggle-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.metronome-toggle-btn.active {
    background: var(--accent-orange);
    animation: metronome-pulse 0.5s ease-in-out infinite alternate;
}

.metronome-toggle-btn.active:hover {
    background: #E6850E;
}

@keyframes metronome-pulse {
    from {
        box-shadow: 0 2px 8px rgba(255, 149, 10, 0.3);
    }
    to {
        box-shadow: 0 4px 16px rgba(255, 149, 10, 0.6);
    }
}

/* Dark mode metronome button */
[data-theme="dark"] .metronome-toggle-btn {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .metronome-toggle-btn:hover {
    background: #1E8FFF !important;
}

[data-theme="dark"] .metronome-toggle-btn.active {
    background: var(--accent-orange) !important;
}

/* BPM input styling */
.bpm-input {
    width: 65px;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    background: var(--neutral-white);
    color: var(--neutral-black);
    transition: all 0.2s ease;
    cursor: pointer;
}

.bpm-input:hover {
    border-color: var(--border-color-medium);
    background: var(--neutral-light);
}

.bpm-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
    background: var(--neutral-white);
    cursor: text;
}

/* Dark mode BMP input */
[data-theme="dark"] .bpm-input {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .bpm-input:hover {
    background: var(--neutral-medium) !important;
    border-color: var(--border-color-medium) !important;
}

[data-theme="dark"] .bpm-input:focus {
    background: var(--neutral-light) !important;
    border-color: var(--primary-blue) !important;
}

/* Main page metronome control styling */
.metronome-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Reduce spacing specifically for metronome group */
.metronome-group {
    margin-left: -16px !important;
}

.bpm-input-control {
    width: 85px;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    background: #ffffff !important;
    color: #1d1d1f;
    transition: all 0.2s ease;
    cursor: pointer;
    font-family: var(--font-system);
}

.bpm-input-control:focus {
    outline: none;
    border-color: #007aff;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
    background: #ffffff !important;
    transform: translateY(-1px);
}

.bpm-input-control:hover {
    border-color: var(--border-color-medium);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
    background: #ffffff !important;
    transform: translateY(-1px);
}

/* Dark mode BPM input control */
[data-theme="dark"] .bpm-input-control {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .bpm-input-control:hover {
    background: var(--neutral-medium) !important;
    border-color: var(--border-color-medium) !important;
}

[data-theme="dark"] .bpm-input-control:focus {
    background: var(--neutral-light) !important;
    border-color: var(--primary-blue) !important;
}

/* BPM拖动状态样式 */
.bpm-input-control.dragging {
    background: var(--neutral-light) !important;
    border-color: var(--primary-blue) !important;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
    cursor: ns-resize !important;
    transform: translateY(-1px);
}

[data-theme="dark"] .bpm-input-control.dragging {
    background: var(--neutral-medium) !important;
    border-color: var(--primary-blue) !important;
    box-shadow: 0 0 0 3px var(--card-shadow-focus);
    cursor: ns-resize !important;
    transform: translateY(-1px);
}

/* Header Compact Metronome Styles */
.header-metronome {
    display: flex;
    align-items: center;
}

.metronome-compact {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--neutral-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 12px;
    box-shadow: 0 2px 8px var(--card-shadow);
    transition: all 0.2s ease;
}

.metronome-compact:hover {
    box-shadow: 0 4px 16px var(--card-shadow-hover);
    transform: translateY(-1px);
}

.metronome-bpm {
    display: flex;
    align-items: center;
    gap: 4px;
}

.bpm-display {
    width: 45px;
    padding: 2px 6px;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    color: var(--neutral-black);
    outline: none;
}

.bpm-display:focus {
    background: var(--neutral-light);
    border-radius: 4px;
}

.bpm-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--neutral-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metronome-play-btn {
    width: 28px;
    height: 28px;
    padding: 0;
    background: var(--primary-blue);
    border: none;
    border-radius: 50%;
    color: #FFFFFF;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.metronome-play-btn:hover {
    background: #005FCC;
    transform: scale(1.05);
}

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

.metronome-play-btn.active {
    background: var(--accent-orange);
    animation: header-metronome-pulse 0.6s ease-in-out infinite alternate;
}

.metronome-play-btn.active:hover {
    background: #E6850E;
}

.metronome-beat-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neutral-medium);
    transition: all 0.1s ease;
    opacity: 0.6;
}

.metronome-beat-indicator.beat {
    background: var(--accent-green);
    transform: scale(1.5);
    opacity: 1;
    box-shadow: 0 0 6px var(--accent-green);
}

@keyframes header-metronome-pulse {
    from {
        box-shadow: 0 0 0 0 rgba(255, 149, 10, 0.4);
    }
    to {
        box-shadow: 0 0 0 4px rgba(255, 149, 10, 0.1);
    }
}

/* Dark mode styles for header metronome */
[data-theme="dark"] .metronome-compact {
    background: var(--neutral-white) !important;
    border-color: var(--border-color) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .metronome-compact:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .bpm-display {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .bpm-display:focus {
    background: var(--neutral-light) !important;
}

[data-theme="dark"] .bpm-label {
    color: var(--neutral-dark) !important;
}

[data-theme="dark"] .metronome-play-btn {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .metronome-play-btn:hover {
    background: #1E8FFF !important;
}

[data-theme="dark"] .metronome-play-btn.active {
    background: var(--accent-orange) !important;
}

[data-theme="dark"] .metronome-beat-indicator {
    background: var(--neutral-medium) !important;
}

[data-theme="dark"] .metronome-beat-indicator.beat {
    background: var(--accent-green) !important;
}

/* Original spacing restored */

/* Radio button styling */
.radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.radio-item:hover {
    background-color: #f2f2f7;
}

.radio-item input[type="radio"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: #007aff;
    cursor: pointer;
}

.radio-item label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--neutral-text-secondary);
    cursor: pointer;
    text-transform: none;
    font-variant: normal;
    letter-spacing: -0.01em;
}

/* Apple-style buttons */
.buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.button-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

button {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 14px;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    letter-spacing: -0.01em;
    position: relative !important;
    overflow: visible;
    pointer-events: auto !important;
    z-index: 100 !important;
}

.btn-primary {
    padding: 18px 36px;
    background: #007aff;
    color: white;
    border-color: #007aff;
    box-shadow:  0 3px 6px rgba(0, 122, 255, 0.3);
    font-size: 1.2rem;
    font-weight: 600;
}

.btn-primary:hover {
    background: #005FCC;
    border-color: #0056cc;
    transform: translateY(-2px);
    box-shadow: 
        0 8px 24px rgba(0, 122, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 
        0 4px 16px rgba(0, 122, 255, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    padding: 14px 28px;
    background: #f2f2f7;
    color: #1d1d1f;
    border-color: #d2d2d7;
    border: 1px solid var(--border-color-soft);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

.btn-secondary:hover {
    background: #e8e8ed;
    border-color: #b8b8bf;
    transform: translateY(-2px);
    box-shadow: 
        0 4px 16px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border-color: #b8b8bf;
    color: #1d1d1f;
}

.btn-secondary:active {
    transform: translateY(-1px);
    background: #e8e8ed;
    color: #1d1d1f;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.12),
        inset 0 1px 0 rgba(0, 0, 0, 0.05);
}

.btn-select-all {
    background: #f2f2f7 !important;
    border: 1px solid #d2d2d7 !important;
    padding: 10px 18px !important;
    font-size: 0.95rem !important;
    font-weight: 600 !important;
    border: none !important;
    color: #1d1d1f !important;
    border-radius: 10px !important;
    transition: all 0.3s ease !important;
}

.btn-select-all:hover {
    background: #e8e8ed !important;
    border-color: #b8b8bf !important;
    transform: translateY(-1px) !important;
}

/* Score container with Apple-style card - MUSIC CLARITY OPTIMIZED */
.score-container {
    padding: 50px 40px;
    background: #007bff05;
    min-height: 550px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: relative;
}

/* Force score container to always be light for music sheet visibility */
[data-theme="dark"] .score-container {
    background: #007bff05;
}

[data-theme="dark"] #score {
    background: #FFFFFF !important;
    color: #000000 !important;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .empty-score-message {
    color: #6B6B6B !important;
}

.score-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
    border-radius: 2px;
    opacity: 0.25;
}

#score {
    width: 100%;
    max-width: 1200px;
    background: #FFFFFF; /* 纯白背景确保乐谱清晰 */
    border-radius: 16px;
    border: 1px solid var(--border-color);
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 2px 16px rgba(0, 0, 0, 0.04),
        0 8px 32px rgba(0, 0, 0, 0.02),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    overflow: visible;
    position: relative;
}

#score:hover {
    box-shadow: 
        0 4px 24px rgba(0, 0, 0, 0.06),
        0 12px 48px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

#score:focus-within {
    box-shadow: 
        0 4px 24px var(--card-shadow-focus),
        0 12px 48px rgba(0, 122, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

/* Apple-style modals - FIXED */
.modal {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: rgba(0, 0, 0, 0.5) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: none;
    justify-content: center !important;
    align-items: center !important;
    z-index: 9999 !important;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: auto !important;
}

.modal.show {
    display: flex !important;
    opacity: 1 !important;
}

/* CRITICAL: Allow JavaScript to override display property */
.modal[style*="display: flex"],
.modal[style*="display:flex"],
.modal[style*="display: block"],
.modal[style*="display:block"] {
    display: flex !important;
    opacity: 1 !important;
    z-index: 9999 !important;
}

.modal-content {
    background: #ffffff !important;
    border-radius: 16px !important;
    max-width: 600px !important;
    width: 90% !important;
    max-height: 90vh !important;
    overflow: visible !important;
    box-shadow: 0 20px 64px rgba(0, 0, 0, 0.15) !important;
    border: 1px solid var(--border-color-soft) !important;
    transform: scale(1) !important;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative !important;
    z-index: 10000 !important;
    pointer-events: auto !important;
}

.modal.show .modal-content {
    transform: scale(1) !important;
}

.modal-header {
    background: #ffffff !important;
    color: #1d1d1f;
    padding: 28px 32px !important;
    border-bottom: 1px solid #d2d2d7;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    position: relative !important;
    z-index: 10001 !important;
    border-top: 14px solid #007bff83/* base accent line */
}

.modal-header::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
    border-radius: 1px;
    opacity: 0.3;
}

.modal-header h3 {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, 'Microsoft YaHei', sans-serif;
    margin: 0;
    font-size: 1.7rem;
    font-weight: 600;
    color: #1d1d1f;
    letter-spacing: -0.043em;
}

.close-modal, .close-btn {
    background: var(--neutral-soft) !important;
    border: none !important;
    border-radius: 8px !important;
    font-size: 1.2rem !important;
    cursor: pointer !important;
    color: var(--neutral-text-light) !important;
    width: 32px !important;
    height: 32px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: all 0.3s ease !important;
    position: relative !important;
    z-index: 10002 !important;
    pointer-events: auto !important;
}

.close-modal:hover, .close-btn:hover {
    background: var(--neutral-soft) !important;
    color: var(--neutral-text) !important;
    transform: scale(1.1) !important;
}

.modal-body {
    padding: 32px !important;
    max-height: calc(90vh - 120px) !important;
    overflow-y: auto !important;
    position: relative !important;
    z-index: 10001 !important;
    pointer-events: auto !important;
}

/* Checkbox styling */
.rhythm-section {
    margin-bottom: 32px;
}

.rhythm-section h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    padding: 14px 18px;
    border-radius: 10px;
    transition: all 0.3s ease;
    background: #ffffff
}

.checkbox-item:hover {
    background: #f2f2f7;
    border-color: var(--neutral-medium);
    transform: translateY(-1px);
}

.checkbox-item input[type="checkbox"] {
    width: 22px;
    height: 22px;
    accent-color: #007aff;
    cursor: pointer;
    border-radius: 4px var(--primary-blue), var(--accent-purple);
}

.checkbox-item span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--neutral-text-secondary);
    letter-spacing: -0.01em;
}

/* Advanced settings section */
#rhythmAdvancedSettings, #articulationAdvancedSettings {
    background: var(--neutral-soft);
    border-radius: 12px;
    border: 1px solid var(--primary-blue), var(--accent-purple);
    padding: 24px;
    margin-top: 24px;
}

.rhythm-frequency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.frequency-item {
    background: #f2f2f7;
    border: 1px solid #d2d2d7;
    padding: 16px;
    border-radius: 10px;
}

.frequency-item label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 8px;
    text-transform: none;
    font-variant: normal;
}

/* Modal buttons */
.modal-buttons {
    display: flex !important;
    gap: 12px !important;
    justify-content: flex-end !important;
    margin-top: 32px !important;
    padding-top: 24px !important;
    border-top: 1px solid var(--border-color) !important;
    position: relative !important;
    z-index: 10002 !important;
    pointer-events: auto !important;
}

/* All modal elements should be interactive */
.modal *, .modal-content *, .modal-body *, .modal-header *, .modal-buttons * {
    pointer-events: auto !important;
    position: relative !important;
}

/* Empty score message */
.empty-score-message {
    text-align: center;
    color: var(--neutral-text-light);
    font-size: 1.1rem;
    font-weight: 450;
    padding: 40px;
    letter-spacing: -0.01em;
}

/* Hide OSMD elements */
.osmd-title,
.osmd-subtitle, 
.osmd-composer,
.osmd-lyricist,
.osmd-credits,
.osmd-part-name,
text[class*="title"],
text[class*="Title"], 
text[class*="composer"],
text[class*="Composer"],
text[class*="part-name"],
text[class*="PartName"] {
    display: none !important;
    visibility: hidden !important;
}

#score svg {
    display: block !important;
    margin: 0 auto !important;
    border-radius: 8px;
}


/* Responsive design with Apple-style breakpoints */
@media (max-width: 599px) {
    body { 
        padding: 12px; 
    }
    
    .container {
        border-radius: 12px;
    }
    
    .header { 
        padding: 32px 24px; 
    }
    
    .header h1 { 
        font-size: 2rem; 
    }
    
    .controls { 
        padding: 24px; 
    }
    
    .control-row { 
        flex-direction: column; 
        align-items: stretch;
        gap: 20px; 
    }
    
    .buttons { 
        flex-direction: column;
        gap: 16px;
    }
    
    .button-group {
        justify-content: center;
    }
    
    .checkbox-grid { 
        grid-template-columns: 1fr; 
    }
    
    .modal-content { 
        width: 95%;
        border-radius: 12px;
    }
    
    .modal-body {
        padding: 24px;
    }
    
    .score-container { 
        padding: 16px; 
    }
    
    #score { 
        border-radius: 8px;
        min-height: 240px; 
    }
    
    button {
        padding: 12px 24px;
        font-size: 1rem;
    }
    
    .btn-primary {
        padding: 16px 32px;
        font-size: 1.1rem;
    }
}

@media (min-width: 600px) and (max-width: 899px) {
    .score-container { 
        padding: 24px; 
    }
    
    .control-row { 
        gap: 20px; 
    }
}

@media (min-width: 900px) {
    .control-row { 
        gap: 28px; 
    }
    
    .container:hover {
        box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
        transform: translateY(-2px);
    }
}

/* Note: Dark mode is now controlled by data-theme attribute instead of prefers-color-scheme */

/* Smooth animations and micro-interactions */
* {
    scroll-behavior: smooth;
}

button, .checkbox-item, select, input {
    will-change: transform;
}

/* CRITICAL FIX: Ensure buttons are clickable */
button {
    pointer-events: auto !important;
    z-index: 100 !important;
    position: relative !important;
    cursor: pointer !important;
}

/* Ensure all interactive elements are clickable */
select, input, .radio-item, .checkbox-item {
    pointer-events: auto !important;
    z-index: 50 !important;
    position: relative !important;
}

/* Fix for any potential overlay blocking clicks */
.control-row, .buttons, .button-group {
    pointer-events: auto !important;
    position: relative !important;
    z-index: 10 !important;
}

/* Ensure no pseudo-elements block clicks */
button::before,
button::after {
    pointer-events: none !important;
}

/* Focus indicators for accessibility */
button:focus-visible,
select:focus-visible,
input:focus-visible,
.checkbox-item:focus-within {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* 添加伪元素来创建更复杂的音乐装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        /* 高音谱号暗示 - 椭圆形装饰 */
        radial-gradient(ellipse 3px 8px at 25% 25%, rgba(0, 0, 0, 0.025) 40%, transparent 41%),
        radial-gradient(ellipse 8px 3px at 75% 75%, rgba(0, 0, 0, 0.025) 40%, transparent 41%),
        /* 音符连线暗示 */
        linear-gradient(30deg, transparent 48%, rgba(0, 0, 0, 0.02) 49%, rgba(0, 0, 0, 0.02) 51%, transparent 52%),
        linear-gradient(-30deg, transparent 48%, rgba(0, 0, 0, 0.02) 49%, rgba(0, 0, 0, 0.02) 51%, transparent 52%),
        /* 骰子面暗示 */
        linear-gradient(90deg, rgba(0, 0, 0, 0.012) 1px, transparent 1px),
        linear-gradient(0deg, rgba(0, 0, 0, 0.012) 1px, transparent 1px);
    background-size: 
        400px 400px, 350px 350px,
        300px 300px, 280px 280px,
        120px 120px, 120px 120px;
    background-position: 
        100px 150px, 250px 300px,
        0 100px, 200px 50px,
        0 0, 0 0;
    pointer-events: none;
    z-index: -1;
}

/* Dark mode background decorations */
[data-theme="dark"] body::before {
    background-image: 
        /* 高音谱号暗示 - 椭圆形装饰 (白色在深色背景上) */
        radial-gradient(ellipse 3px 8px at 25% 25%, rgba(255, 255, 255, 0.04) 40%, transparent 41%),
        radial-gradient(ellipse 8px 3px at 75% 75%, rgba(255, 255, 255, 0.04) 40%, transparent 41%),
        /* 音符连线暗示 */
        linear-gradient(30deg, transparent 48%, rgba(255, 255, 255, 0.03) 49%, rgba(255, 255, 255, 0.03) 51%, transparent 52%),
        linear-gradient(-30deg, transparent 48%, rgba(255, 255, 255, 0.03) 49%, rgba(255, 255, 255, 0.03) 51%, transparent 52%),
        /* 骰子面暗示 */
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

/* Dark mode styles for all UI elements */
[data-theme="dark"] .container {
    background: var(--neutral-white);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .controls {
    background: transparent;
}

/* Dark mode buttons */
[data-theme="dark"] .btn-primary {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
    border-color: var(--primary-blue) !important;
    box-shadow: 0 4px 20px rgba(10, 132, 255, 0.3);
}

[data-theme="dark"] .btn-primary:hover {
    background: #1E8FFF !important;
    box-shadow: 0 6px 25px rgba(10, 132, 255, 0.4);
}

[data-theme="dark"] .btn-secondary {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--neutral-medium) !important;
}

/* Dark mode form elements */
[data-theme="dark"] select {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] select:hover {
    background: var(--neutral-medium) !important;
    border-color: var(--border-color-medium) !important;
}

[data-theme="dark"] input[type="range"] {
    background: var(--neutral-medium);
}

[data-theme="dark"] input[type="range"]::-webkit-slider-thumb {
    background: #FFFFFF;
    border-color: var(--primary-blue);
}

[data-theme="dark"] input[type="radio"] {
    border-color: var(--border-color-medium);
}

[data-theme="dark"] input[type="radio"]:checked {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

/* Dark mode text colors */
[data-theme="dark"] label,
[data-theme="dark"] .control-group label {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] span {
    color: var(--neutral-dark) !important;
}

/* Dark mode modal styling */
[data-theme="dark"] .modal {
    background: rgba(0, 0, 0, 0.8) !important;
}

[data-theme="dark"] .modal-content {
    background: var(--neutral-white) !important;
    border-color: var(--border-color) !important;
    box-shadow: 0 20px 64px rgba(0, 0, 0, 0.8) !important;
}

[data-theme="dark"] .modal-header {
    background: var(--neutral-white) !important;
    border-bottom-color: var(--border-color) !important;
}

[data-theme="dark"] .modal-header h3 {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .modal-body {
    background: var(--neutral-white) !important;
    color: var(--neutral-black) !important;
}

/* Dark mode checkbox and form elements in modals */
[data-theme="dark"] .checkbox-item {
    background: var(--neutral-light) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .checkbox-item:hover {
    background: var(--neutral-medium) !important;
}

[data-theme="dark"] .checkbox-item span {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .checkbox-item input[type="checkbox"] {
    accent-color: var(--primary-blue) !important;
}

/* Dark mode advanced settings sections */
[data-theme="dark"] #rhythmAdvancedSettings,
[data-theme="dark"] #articulationAdvancedSettings {
    background: var(--neutral-light) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .frequency-item {
    background: var(--neutral-medium) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .frequency-item label {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .rhythm-section h4 {
    color: var(--neutral-black) !important;
}

/* Dark mode radio items in modals */
[data-theme="dark"] .radio-item {
    background: transparent !important;
}

[data-theme="dark"] .radio-item:hover {
    background: var(--neutral-light) !important;
}

[data-theme="dark"] .radio-item label {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .radio-item input[type="radio"] {
    accent-color: var(--primary-blue) !important;
}

/* Dark mode close button */
[data-theme="dark"] .close-modal,
[data-theme="dark"] .close-btn {
    background: var(--neutral-medium) !important;
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .close-modal:hover,
[data-theme="dark"] .close-btn:hover {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
}

/* Dark mode select all button */
[data-theme="dark"] .btn-select-all {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .btn-select-all:hover {
    background: var(--neutral-medium) !important;
}

/* Dark mode header styling */
[data-theme="dark"] .header {
    background: var(--neutral-white) !important;
    border-bottom-color: var(--border-color) !important;
}

[data-theme="dark"] .header h1 {
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .header p {
    color: var(--neutral-dark) !important;
}

/* Dark mode controls section */
[data-theme="dark"] .controls {
    background: var(--neutral-white) !important;
    border-bottom-color: var(--border-color) !important;
}

[data-theme="dark"] .control-row {
    background: transparent !important;
}

/* Dark mode theme switcher styling in dark mode */
[data-theme="dark"] .theme-switcher {
    background: var(--neutral-light) !important;
    border-color: var(--border-color) !important;
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .theme-switcher:hover {
    background: var(--neutral-medium) !important;
}

/* Dark mode language switcher adjustments */
[data-theme="dark"] .language-btn {
    background: var(--primary-blue) !important;
    border-color: var(--primary-blue) !important;
    color: #FFFFFF !important;
    box-shadow: 0 2px 8px rgba(10, 132, 255, 0.4);
}

[data-theme="dark"] .language-btn:hover {
    background: #1E8FFF !important;
    border-color: #1E8FFF !important;
    box-shadow: 0 4px 16px rgba(10, 132, 255, 0.5);
}

[data-theme="dark"] .language-menu {
    background: var(--neutral-white) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .language-option {
    background: var(--neutral-white) !important;
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .language-option:hover {
    background: var(--neutral-light) !important;
    color: var(--primary-blue) !important;
}

[data-theme="dark"] .language-option:active {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

/* Settings Dropdown Styles */
.header {
    position: relative;
}

.settings-dropdown {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    z-index: 9998;
}

.settings-btn {
    background: var(--neutral-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-black) !important;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 8px var(--card-shadow);
    white-space: nowrap;
    min-width: 100px;
    justify-content: center;
}

.settings-btn:hover {
    background: var(--neutral-light);
    border-color: var(--border-color-medium);
    color: var(--neutral-black) !important;
    box-shadow: 0 4px 16px var(--card-shadow-hover);
    transform: translateY(-1px);
}

.settings-btn:active {
    background: var(--neutral-medium);
    color: var(--neutral-black) !important;
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--card-shadow);
}

.settings-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: var(--neutral-white);
    border-radius: 16px;
    box-shadow: 0 12px 48px var(--card-shadow-hover);
    overflow: visible;
    z-index: 9999;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid var(--border-color);
}

.settings-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.settings-section {
    padding: 0;
}

.settings-section:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.settings-section-title {
    padding: 16px 20px 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--neutral-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--neutral-light);
}

.theme-options,
.language-options {
    padding: 8px 0;
}

.theme-option,
.language-option {
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 400;
    color: var(--neutral-black);
    background: var(--neutral-white);
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    position: relative;
    z-index: 10000;
}

.theme-option:hover,
.language-option:hover {
    background: var(--primary-blue);
    color: #FFFFFF;
}

.theme-option:active,
.language-option:active {
    background: #005FCC;
    color: #FFFFFF;
}

.theme-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* Metronome Controls Styles */
.metronome-controls {
    padding: 16px 0;
}

.metronome-tempo {
    margin-bottom: 16px;
}

.metronome-tempo label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--neutral-dark);
    margin-bottom: 8px;
}

.tempo-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.tempo-input {
    width: 80px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    background: var(--neutral-white);
    color: var(--neutral-black);
}

.tempo-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
}

.tempo-preset-buttons {
    display: flex;
    gap: 6px;
}

.tempo-preset {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--neutral-light);
    color: var(--neutral-black);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.tempo-preset:hover {
    background: var(--primary-blue);
    color: #FFFFFF;
    border-color: var(--primary-blue);
}

.metronome-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.metronome-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--primary-blue);
    color: #FFFFFF;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.metronome-btn:hover {
    background: #005FCC;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.metronome-btn.active {
    background: var(--accent-orange);
}

.metronome-btn.active:hover {
    background: #E6850E;
}

.metronome-icon {
    font-size: 16px;
}

.metronome-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--neutral-medium);
    transition: all 0.1s ease;
}

.metronome-indicator.beat {
    background: var(--accent-green);
    transform: scale(1.3);
    box-shadow: 0 0 8px var(--accent-green);
}

/* Dark mode metronome styles */
[data-theme="dark"] .tempo-input {
    background: var(--neutral-light) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .tempo-preset {
    background: var(--neutral-medium) !important;
    color: var(--neutral-black) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .tempo-preset:hover {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .metronome-btn {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .metronome-btn:hover {
    background: #1E8FFF !important;
}

[data-theme="dark"] .metronome-btn.active {
    background: var(--accent-orange) !important;
}

[data-theme="dark"] .metronome-indicator {
    background: var(--neutral-medium) !important;
}

[data-theme="dark"] .metronome-indicator.beat {
    background: var(--accent-green) !important;
}

/* Dark mode settings styles */
[data-theme="dark"] .settings-btn {
    background: var(--neutral-light) !important;
    border-color: var(--border-color) !important;
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .settings-btn:hover {
    background: var(--neutral-medium) !important;
    border-color: var(--border-color-medium) !important;
}

[data-theme="dark"] .settings-menu {
    background: var(--neutral-white) !important;
    border-color: var(--border-color) !important;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.8) !important;
    z-index: 9999 !important;
}

[data-theme="dark"] .settings-section-title {
    background: var(--neutral-light) !important;
    color: var(--neutral-dark) !important;
}

[data-theme="dark"] .theme-option,
[data-theme="dark"] .language-option {
    background: var(--neutral-white) !important;
    color: var(--neutral-black) !important;
}

[data-theme="dark"] .theme-option:hover,
[data-theme="dark"] .language-option:hover {
    background: var(--primary-blue) !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .theme-option:active,
[data-theme="dark"] .language-option:active {
    background: #005FCC !important;
    color: #FFFFFF !important;
}

/* Language Switcher Styles (legacy - keep for compatibility) */

/* Override global button styles specifically for language button */
button.language-btn {
    color: #FFFFFF !important;
    background: #007AFF !important;
}

button.language-btn:hover {
    color: #FFFFFF !important;
    background: #0056CC !important;
}

button.language-btn:active {
    color: #FFFFFF !important;
    background: #004499 !important;
}

button.language-btn:focus {
    color: #FFFFFF !important;
    background: #007AFF !important;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: relative;
}

.header-text {
    flex: 1;
    text-align: center;
}

.header-controls {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    z-index: 9997;
    padding: 0 0;
}

/* Theme Switcher Styles */
.theme-switcher {
    background: var(--neutral-white);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px var(--card-shadow);
}

.theme-switcher:hover {
    background: var(--neutral-light);
    box-shadow: 0 4px 16px var(--card-shadow-hover);
    transform: translateY(-1px);
}

.theme-switcher:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--card-shadow);
}

/* Override global button styles for theme switcher */
button.theme-switcher {
    color: var(--neutral-black) !important;
    background: var(--neutral-white) !important;
}

button.theme-switcher:hover {
    color: var(--neutral-black) !important;
    background: var(--neutral-light) !important;
}

.language-switcher {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.language-btn {
    background: #007AFF;
    border: 1px solid #007AFF;
    border-radius: 12px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: #FFFFFF !important;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
    white-space: nowrap;
    min-width: 120px;
    justify-content: center;
}

.language-btn:hover {
    background: #0056CC;
    border-color: #0056CC;
    color: #FFFFFF !important;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.4);
    transform: translateY(-1px);
}

.language-btn:active {
    background: #004499;
    color: #FFFFFF !important;
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

/* 风格3: 毛玻璃效果 - 备选方案2 
.language-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-black);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
    min-width: 140px;
    justify-content: center;
}

.language-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.language-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}
*/

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--card-shadow-hover);
    overflow: hidden;
    z-index: 1000;
    min-width: 140px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

/* Show menu on hover */
.language-switcher:hover .language-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 400;
    color: #1d1d1f;
    background: #FFFFFF;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.language-option:hover {
    background: #E3F2FD !important;
    color: #007AFF !important;
}

.language-option:active {
    background: #007AFF !important;
    color: #FFFFFF !important;
}

/* Additional override for language options */
.language-menu .language-option:hover {
    background: #E3F2FD !important;
    color: #1d1d1f !important;
}

.language-menu .language-option:active {
    background: #007AFF !important;
    color: #FFFFFF !important;
}

/* Note: Language switcher dark mode styles are handled by [data-theme="dark"] selectors */

/* Responsive adjustments */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
        align-items: center;
        position: static;
    }
    
    .header-text {
        text-align: center;
        order: 2;
    }
    
    .header-controls {
        position: static;
        transform: none;
        justify-content: center;
        order: 1;
        gap: 16px;
        flex-wrap: wrap;
    }
    
    .settings-dropdown {
        align-items: center;
    }
    
    .settings-menu {
        left: 50%;
        transform: translateX(-50%) translateY(-10px);
        min-width: 240px;
    }
    
    .settings-menu.show {
        transform: translateX(-50%) translateY(0);
    }
    
    .settings-btn {
        min-width: 120px;
        padding: 12px 20px;
    }
    
    .metronome-compact {
        padding: 6px 10px;
        gap: 6px;
    }
    
    .bpm-display {
        width: 40px;
        font-size: 13px;
    }
    
    .metronome-play-btn {
        width: 26px;
        height: 26px;
        font-size: 11px;
    }
    
    .metronome-beat-indicator {
        width: 6px;
        height: 6px;
    }
}