@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --primary-color: #ffd700;
    --primary-light: #ffed4e;
    --background-dark: #0a0a0a;
    --background-medium: #1a1a1a;
    --background-light: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-accent: #e0e0e0;
    --border-color: rgba(255, 215, 0, 0.1);
    --border-hover: rgba(255, 215, 0, 0.3);
    --glass-bg: rgba(42, 42, 42, 0.8);
    --input-bg: rgba(10, 10, 10, 0.8);
}

[data-theme="gold"] {
    --primary-color: #ffd700;
    --primary-light: #ffed4e;
    --background-dark: #0a0a0a;
    --background-medium: #1a1a1a;
}

[data-theme="neon"] {
    --primary-color: #00ffff;
    --primary-light: #66ffff;
    --background-dark: #0a0a15;
    --background-medium: #1a1a2e;
}

[data-theme="purple"] {
    --primary-color: #8b5cf6;
    --primary-light: #a78bfa;
    --background-dark: #0f0a1a;
    --background-medium: #1e1a2e;
}

[data-theme="fire"] {
    --primary-color: #ff4444;
    --primary-light: #ff6666;
    --background-dark: #1a0a0a;
    --background-medium: #2e1a1a;
}

[data-theme="fresh"] {
    --primary-color: #00ff88;
    --primary-light: #66ffaa;
    --background-dark: #0a1a0a;
    --background-medium: #1a2e1a;
}

[data-theme="pink"] {
    --primary-color: #ff44aa;
    --primary-light: #ff66bb;
    --background-dark: #1a0a15;
    --background-medium: #2e1a25;
}

[data-theme="cyan"] {
    --primary-color: #44aaff;
    --primary-light: #66bbff;
    --background-dark: #0a151a;
    --background-medium: #1a252e;
}

[data-theme="clean"] {
    --primary-color: #ffffff;
    --primary-light: #f0f0f0;
    --background-dark: #1a1a1a;
    --background-medium: #2a2a2a;
}

[data-theme="sunset"] {
    --primary-color: #ff8800;
    --primary-light: #ffaa44;
    --background-dark: #1a1000;
    --background-medium: #2e2200;
}

[data-theme="indigo"] {
    --primary-color: #4f46e5;
    --primary-light: #7c3aed;
    --background-dark: #0a0a1a;
    --background-medium: #1a1a2e;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--background-dark) 0%, var(--background-medium) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    font-size: 14px;
}

.container {
    max-width: 540px;
    margin: 0 auto;
    padding: 24px 12px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    padding-top: 40px;
}

.header-controls {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-bottom: 20px;
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
}

.theme-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 12px;
    backdrop-filter: blur(6px);
    position: relative;
    z-index: 11;
}

.theme-arrow {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 3px;
    transition: all 0.2s ease;
    user-select: none;
}

.theme-arrow:hover {
    background: var(--primary-color);
    color: #000000;
}

.theme-arrow:active {
    transform: scale(0.9);
}

.theme-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 80px;
    text-align: center;
    user-select: none;
}

.lang-toggle {
    padding: 6px 12px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(6px);
    position: relative;
    z-index: 11;
    min-width: 36px;
    text-align: center;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.lang-toggle:hover {
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.lang-toggle:active {
    transform: scale(0.95);
}

.logo-container {
    margin: 20px 0 9px 0;
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-image {
    max-height: 360px;
    width: auto;
    max-width: 100%;
    transition: all 0.3s ease;
    position: relative;
}

.logo-container::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    border-radius: 1px;
}

.header p {
    font-size: 0.66rem;
    color: var(--text-secondary);
    font-weight: 400;
    max-width: 360px;
    margin: 15px auto 0;
    line-height: 1.4;
}

.audio-init-section {
    margin: 20px 0;
    padding: 20px;
    background: rgba(255, 193, 7, 0.1);
    border: 2px solid rgba(255, 193, 7, 0.3);
    border-radius: 8px;
    text-align: center;
}

.audio-warning h4 {
    color: #ffc107;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.audio-warning p {
    color: var(--text-secondary);
    font-size: 0.7rem;
    margin-bottom: 15px;
    line-height: 1.4;
}

.init-audio-btn {
    background: linear-gradient(135deg, #ffc107 0%, #ffed4a 100%);
    color: #000;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.init-audio-btn:hover {
    background: linear-gradient(135deg, #ffed4a 0%, #ffc107 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 193, 7, 0.3);
}

.init-audio-btn:active {
    transform: translateY(-1px) scale(0.98);
}

.main-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(6px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.main-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.6;
}

.file-section {
    margin-bottom: 18px;
    padding: 15px;
    background: rgba(26, 26, 26, 0.6);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.file-section h3 {
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: 'JetBrains Mono', monospace;
}

.file-input-wrapper {
    position: relative;
    margin-bottom: 9px;
}

input[type="file"] {
    opacity: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: pointer;
    z-index: 2;
}

.file-label {
    display: block;
    width: 100%;
    padding: 9px 12px;
    background: var(--input-bg);
    border: 2px dashed var(--border-hover);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.57rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    font-weight: 500;
}

.file-label:hover {
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-1px);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin: 18px 0;
    padding: 15px;
    background: rgba(26, 26, 26, 0.4);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-group label {
    font-size: 0.54rem;
    font-weight: 600;
    color: var(--text-accent);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: 'JetBrains Mono', monospace;
}

input[type="number"] {
    padding: 7px 9px;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.1);
    transform: translateY(-1px);
}

.checkbox-group {
    display: flex;
    align-items: center;
    padding: 9px 12px;
    background: rgba(26, 26, 26, 0.4);
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 12px 0;
}

.checkbox-group:hover {
    background: rgba(255, 215, 0, 0.05);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.checkbox-group input[type="checkbox"] {
    width: 12px;
    height: 12px;
    margin-right: 7px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--text-accent);
    cursor: pointer;
    flex: 1;
}

.action-buttons {
    display: flex;
    gap: 9px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 18px 0;
}

button {
    padding: 9px 18px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: #000000;
    border: none;
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 0.57rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 84px;
    position: relative;
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

button:hover:not(:disabled)::before {
    left: 100%;
}

button:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 215, 0, 0.3);
}

button:active:not(:disabled) {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 4px 8px rgba(255, 215, 0, 0.2);
}

button:disabled {
    background: rgba(100, 100, 100, 0.3);
    color: rgba(255, 255, 255, 0.4);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

button.secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-color);
}

.status {
    margin: 15px 0;
    padding: 12px 15px;
    background: rgba(26, 26, 26, 0.6);
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
    font-size: 0.57rem;
    line-height: 1.4;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 400;
}

.progress-container {
    margin: 12px 0;
}

.progress {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    width: 0%;
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.2) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.2) 50%, rgba(255, 255, 255, 0.2) 75%, transparent 75%, transparent);
    background-size: 15px 15px;
    animation: progressStripes 1s linear infinite;
}

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loader-content {
    text-align: center;
    background: var(--glass-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(6px);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

.loader-content p {
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 500;
}

audio {
    width: 100%;
    margin: 9px 0;
    height: 44px;
    background: linear-gradient(135deg, var(--background-light) 0%, var(--background-medium) 100%);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    outline: none;
}

audio::-webkit-media-controls-panel {
    background: linear-gradient(135deg, var(--background-light) 0%, var(--background-medium) 100%);
    border-radius: 7px;
}

audio::-webkit-media-controls-play-button {
    filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.2);
    margin: 0 8px;
    transition: all 0.2s ease;
}

audio::-webkit-media-controls-pause-button {
    filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.2);
    margin: 0 8px;
    transition: all 0.2s ease;
}

audio::-webkit-media-controls-play-button:hover,
audio::-webkit-media-controls-pause-button:hover {
    filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.5);
    transform: scale(1.1);
}

audio::-webkit-media-controls-timeline {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin: 0 8px;
    height: 4px;
}

audio::-webkit-media-controls-current-time-display,
audio::-webkit-media-controls-time-remaining-display {
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

audio::-webkit-media-controls-volume-slider {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    height: 4px;
}

audio::-webkit-media-controls-mute-button {
    filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.2);
    transition: all 0.2s ease;
}

audio::-webkit-media-controls-mute-button:hover {
    filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.5);
    transform: scale(1.1);
}

audio::-webkit-media-controls-timeline-container,
audio::-webkit-media-controls-time-remaining-display,
audio::-webkit-media-controls-current-time-display {
    color: var(--text-primary);
}

audio::-webkit-media-controls-volume-control-container {
    margin-right: 8px;
}

audio:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.2);
}

audio:hover {
    border-color: var(--border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes progressStripes {
    0% { background-position: 0 0; }
    100% { background-position: 15px 0; }
}

.hidden {
    display: none !important;
}

@media (max-width: 768px) {
    .container {
        padding: 12px 9px;
    }
    
    .logo-image {
        max-height: 300px;
    }
    
    .header p {
        font-size: 0.6rem;
    }
    
    .main-panel {
        padding: 15px 12px;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
        gap: 9px;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    button {
        width: 100%;
        max-width: 180px;
    }
    
    .header-controls {
        position: static;
        justify-content: center;
        margin-bottom: 15px;
    }
    
    .header {
        padding-top: 0;
    }
    
    audio {
        height: 36px;
    }
    
    audio::-webkit-media-controls-current-time-display,
    audio::-webkit-media-controls-time-remaining-display {
        font-size: 9px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 9px 6px;
    }
    
    .logo-image {
        max-height: 255px;
    }
    
    .main-panel {
        padding: 12px 9px;
    }
    
    .file-section {
        padding: 9px;
    }
    
    .controls-grid {
        padding: 9px;
    }
    
    audio {
        height: 32px;
    }
    
    .header-controls {
        gap: 8px;
    }
    
    .theme-selector {
        padding: 4px 8px;
    }
    
    .theme-label {
        min-width: 60px;
        font-size: 10px;
    }
    
    .lang-toggle {
        padding: 4px 8px;
        font-size: 10px;
    }
}

@media (orientation: landscape) and (max-height: 600px) {
    .container {
        padding: 9px 12px;
    }
    
    .header {
        margin-bottom: 18px;
    }
    
    .logo-image {
        max-height: 225px;
    }
    
    .main-panel {
        padding: 18px;
    }
}

.main-panel:hover {
    border-color: var(--border-hover);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
}

.file-input-wrapper.drag-hover .file-label {
    border-color: var(--primary-color);
    background: rgba(255, 215, 0, 0.1);
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.2);
}

.main-panel::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255, 215, 0, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 215, 0, 0.05) 0%, transparent 50%);
    pointer-events: none;
    border-radius: inherit;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        var(--primary-color) 0%, 
        var(--primary-light) 25%,
        var(--primary-color) 50%,
        var(--primary-light) 75%,
        var(--primary-color) 100%);
    background-size: 20px 100%;
    animation: audioViz 1.5s ease-in-out infinite;
    opacity: 0.7;
}

@keyframes audioViz {
    0%, 100% { transform: scaleX(1); }
    50% { transform: scaleX(1.1); }
}

.control-group input:focus {
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.2);
}

.status {
    border-left-width: 3px;
    border-left-style: solid;
    border-left-color: var(--primary-color);
    position: relative;
}

.status::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.container {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#braveWarning {
    animation: slideDownWarning 0.4s ease-out;
}

@keyframes slideDownWarning {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#braveWarning button:hover {
    background: #f8f9fa !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.2);
}

@media (hover: none) {
    button:hover:not(:disabled) {
        transform: none;
        box-shadow: 0 6px 12px rgba(255, 215, 0, 0.2);
    }
    
    .file-label:hover {
        transform: none;
    }
    
    .checkbox-group:hover {
        transform: none;
    }
    
    audio:hover {
        border-color: var(--border-color);
        box-shadow: none;
    }
    
    audio::-webkit-media-controls-play-button:hover,
    audio::-webkit-media-controls-pause-button:hover {
        filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.2);
        transform: none;
    }
    
    audio::-webkit-media-controls-mute-button:hover {
        filter: invert(1) sepia(1) saturate(5) hue-rotate(35deg) brightness(1.2);
        transform: none;
    }
}