/* Pomodoro Timer with Music - Main Stylesheet */

/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #ef4444;
    --primary-dark: #dc2626;
    --primary-light: #fca5a5;
    --secondary: #6366f1;
    --secondary-dark: #4f46e5;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.8);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border: #475569;
    --border-light: #334155;
    
    /* Gradients */
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    --gradient-5: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-ocean: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-forest: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-night: linear-gradient(135deg, #232526 0%, #414345 100%);
    --gradient-aurora: linear-gradient(135deg, #7f7fd5 0%, #86a8e7 50%, #91eae4 100%);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    min-height: 100vh;
    position: relative;
}

/* Background Container */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: var(--gradient-ocean);
    transition: background var(--transition-slow);
}

.background-container.custom-image {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.background-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
}

.header-content {
    flex: 1;
}

.brand-title {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.header-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.control-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.control-btn:active {
    transform: translateY(0);
}

/* Timer Section */
.timer-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) 0;
}

/* Mode Tabs */
.mode-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
}

.mode-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mode-tab:hover {
    color: var(--text-primary);
}

.mode-tab.active {
    background: rgba(239, 68, 68, 0.9);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Timer Display */
.timer-display {
    margin-bottom: var(--spacing-2xl);
}

.timer-circle {
    position: relative;
    width: 320px;
    height: 320px;
}

.timer-progress {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 8;
}

.progress-bar {
    fill: none;
    stroke: var(--primary);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 1131;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1s linear;
    filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.5));
}

.timer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.timer-time {
    font-size: 4.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    display: block;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.timer-mode {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Timer Controls */
.timer-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.timer-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.timer-btn.primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
}

.timer-btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

.timer-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.timer-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Session Counter */
.session-counter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.session-count {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
}

/* Features Section */
.features-section {
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-xl);
}

.features-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

.modal-content.modal-sm {
    max-width: 350px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* Music Controls */
.music-controls {
    margin-bottom: var(--spacing-xl);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.volume-control label {
    font-weight: 500;
    min-width: 60px;
}

.volume-control input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.volume-control span {
    min-width: 40px;
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* YouTube Input */
.youtube-input {
    margin-bottom: var(--spacing-xl);
}

.youtube-input h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.input-group input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-primary {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    background: var(--primary);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.full-width {
    width: 100%;
    margin-top: var(--spacing-md);
}

/* Music List */
.music-list h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

#musicLibrary {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.music-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.music-item.playing {
    border-color: var(--primary);
    background: rgba(239, 68, 68, 0.1);
}

.music-item-title {
    flex: 1;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.music-item-controls {
    display: flex;
    gap: var(--spacing-xs);
}

.music-item-controls button {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.music-item-controls button:hover {
    background: rgba(255, 255, 255, 0.2);
}

.music-item-controls button.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--primary);
}

/* Task Input */
.task-input {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.task-input input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.task-input input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Tasks List */
.tasks-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.task-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.task-item.completed {
    opacity: 0.5;
}

.task-item.completed .task-text {
    text-decoration: line-through;
}

.task-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.task-checkbox.checked {
    background: var(--primary);
    border-color: var(--primary);
}

.task-checkbox.checked::after {
    content: '✓';
    color: white;
    font-size: 0.875rem;
}

.task-text {
    flex: 1;
    font-size: 0.875rem;
}

.task-delete {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.task-delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--primary);
}

/* Background Options */
.bg-options h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.bg-options h3:first-child {
    margin-top: 0;
}

.bg-presets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--spacing-sm);
}

.bg-preset {
    padding: var(--spacing-md);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.bg-preset:hover {
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.bg-preset.active {
    border-color: var(--primary);
    background: rgba(239, 68, 68, 0.1);
}

.custom-bg {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.custom-bg input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.custom-bg input:focus {
    outline: none;
    border-color: var(--primary);
}

.file-upload {
    margin-top: var(--spacing-md);
}

.upload-label {
    display: block;
    padding: var(--spacing-md);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    text-align: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.upload-label:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.05);
}

/* Custom Time Input */
.time-input-group {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.time-input {
    flex: 1;
}

.time-input label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.time-input input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 1.125rem;
    text-align: center;
}

.time-input input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .brand-title {
        font-size: 1.5rem;
    }
    
    .mode-tabs {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .mode-tab {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.75rem;
    }
    
    .timer-circle {
        width: 260px;
        height: 260px;
    }
    
    .timer-time {
        font-size: 3.5rem;
    }
    
    .timer-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .timer-btn {
        padding: var(--spacing-sm) var(--spacing-xl);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .timer-circle {
        width: 220px;
        height: 220px;
    }
    
    .timer-time {
        font-size: 3rem;
    }
    
    .modal-content {
        margin: var(--spacing-md);
        max-height: 90vh;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Fullscreen Mode */
body.fullscreen-mode .features-section,
body.fullscreen-mode .footer,
body.fullscreen-mode .mode-tabs,
body.fullscreen-mode .session-counter,
body.fullscreen-mode .timer-controls .timer-btn:not(.primary) {
    display: none !important;
}

body.fullscreen-mode .main-content {
    justify-content: center;
    padding: var(--spacing-lg);
}

body.fullscreen-mode .timer-section {
    padding: 0;
}

body.fullscreen-mode .timer-circle {
    width: 400px;
    height: 400px;
}

body.fullscreen-mode .timer-time {
    font-size: 5.5rem;
}

@media (max-width: 768px) {
    body.fullscreen-mode .timer-circle {
        width: 300px;
        height: 300px;
    }
    
    body.fullscreen-mode .timer-time {
        font-size: 4rem;
    }
}

/* Play Mode Control */
.play-mode-control {
    margin-top: var(--spacing-lg);
}

.play-mode-control label {
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.play-mode-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.play-mode-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
}

.play-mode-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.play-mode-btn.active {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--primary);
    color: var(--text-primary);
}

/* Share Buttons */
.share-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.share-btn {
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.share-btn.twitter {
    background: #1da1f2;
    color: white;
}

.share-btn.twitter:hover {
    background: #1a91da;
}

.share-btn.facebook {
    background: #4267b2;
    color: white;
}

.share-btn.facebook:hover {
    background: #365899;
}

.share-btn.linkedin {
    background: #0077b5;
    color: white;
}

.share-btn.linkedin:hover {
    background: #006097;
}

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

.share-btn.copy:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Footer Links */
.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-copyright {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Mute Button */
#muteBtn.muted .sound-on {
    display: none;
}

#muteBtn.muted .sound-off {
    display: block !important;
}

#muteBtn:not(.muted) .sound-off {
    display: none;
}

/* Brand Title Link */
.brand-title {
    text-decoration: none;
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    display: inline-block;
}

.brand-title:hover {
    opacity: 0.9;
}