/* Audio Trimmer Tool - Light Theme */
:root {
    /* Tool-specific colors */
    --audio-trimmer-primary: #ec4899;
    --audio-trimmer-primary-hover: #db2777;
    --audio-trimmer-secondary: #2ecc71;
    --audio-trimmer-warning: #f39c12;
    --audio-trimmer-danger: #e74c3c;
    --audio-trimmer-bg: var(--bg-primary);
    --audio-trimmer-card-bg: var(--bg-secondary);
    --audio-trimmer-border: #e9ecef;
    --audio-trimmer-text: var(--text-primary);
    --audio-trimmer-text-light: #6c757d;
    --audio-trimmer-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --audio-trimmer-hover: #f1f3f4;
    
    /* Waveform colors */
    --waveform-bg: var(--bg-tertiary);
    --waveform-line: var(--primary-color);
    --waveform-selection: rgba(52, 152, 219, 0.3);
    --waveform-selection-border: var(--primary-color);
    --playhead-color: #e74c3c;
}

[data-theme="dark"] {
    --audio-trimmer-danger: #f87171;
    --audio-trimmer-border: #374151;
}

/* Tool Layout */
.tool-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Upload Section */
.upload-section {
    background: var(--audio-trimmer-card-bg);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--audio-trimmer-shadow);
}

.upload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--audio-trimmer-border);
}

.upload-header h3 {
    color: var(--audio-trimmer-text);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.file-info {
    background: var(--audio-trimmer-primary);
    color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.9rem;
}

.upload-area {
    border: 3px dashed var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--audio-trimmer-bg);
}

.upload-area:hover {
    border-color: var(--audio-trimmer-primary);
    background: var(--audio-trimmer-hover);
}

.upload-area.dragover {
    border-color: var(--audio-trimmer-secondary);
    background: rgba(46, 204, 113, 0.1);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.upload-text {
    margin: 0 0 0.5rem 0;
    color: var(--audio-trimmer-text);
    font-size: 1.1rem;
}

.upload-formats {
    margin: 0;
    color: var(--audio-trimmer-text-light);
    font-size: 0.9rem;
}

.upload-progress {
    margin-top: 1rem;
}

.progress-bar {
    height: 8px;
    background: var(--audio-trimmer-border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--audio-trimmer-primary);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: var(--audio-trimmer-text-light);
    font-size: 0.9rem;
}

/* Waveform Section */
.waveform-section {
    background: var(--audio-trimmer-card-bg);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--audio-trimmer-shadow);
}

.waveform-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--audio-trimmer-border);
}

.waveform-header h3 {
    color: var(--audio-trimmer-text);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.playback-controls {
    display: flex;
    gap: 0.5rem;
}

.btn-play,
.btn-pause,
.btn-stop {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-play {
    background: var(--audio-trimmer-secondary);
    color: var(--bg-primary);
}

.btn-play:hover {
    background: var(--success-color);
}

.btn-pause {
    background: var(--audio-trimmer-warning);
    color: var(--bg-primary);
}

.btn-pause:hover {
    background: #e67e22;
}

.btn-stop {
    background: var(--audio-trimmer-danger);
    color: var(--bg-primary);
}

.btn-stop:hover {
    background: #c0392b;
}

.waveform-container {
    position: relative;
    margin: 2rem 0;
    border: 2px solid var(--audio-trimmer-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--waveform-bg);
}

#waveformCanvas {
    display: block;
    width: 100%;
    height: 200px;
    cursor: crosshair;
}

.selection-overlay {
    position: absolute;
    top: 0;
    height: 100%;
    background: var(--waveform-selection);
    border-left: 2px solid var(--waveform-selection-border);
    border-right: 2px solid var(--waveform-selection-border);
    pointer-events: none;
    display: none;
}

.playhead {
    position: absolute;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--playhead-color);
    pointer-events: none;
    display: none;
}

.time-info {
    display: flex;
    justify-content: space-between;
    color: var(--audio-trimmer-text-light);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* Trim Controls */
.trim-controls {
    background: var(--audio-trimmer-card-bg);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--audio-trimmer-shadow);
}

.trim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--audio-trimmer-border);
}

.trim-header h3 {
    color: var(--audio-trimmer-text);
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.btn-reset {
    background: var(--audio-trimmer-text-light);
    color: var(--bg-primary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-reset:hover {
    background: var(--audio-trimmer-text);
}

.trim-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.time-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.time-input-group label {
    font-weight: 600;
    color: var(--audio-trimmer-text);
    font-size: 0.95rem;
}

.time-input-group input {
    padding: 0.75rem;
    border: 2px solid var(--audio-trimmer-border);
    border-radius: 8px;
    background: var(--audio-trimmer-bg);
    color: var(--audio-trimmer-text);
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}

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

.time-unit {
    color: var(--audio-trimmer-text-light);
    font-size: 0.9rem;
    margin-top: -0.3rem;
}

.duration-display {
    grid-column: 1 / -1;
    text-align: center;
    padding: 1rem;
    background: var(--audio-trimmer-bg);
    border-radius: 8px;
    border: 1px solid var(--audio-trimmer-border);
}

.selection-duration {
    font-weight: 600;
    color: var(--audio-trimmer-primary);
    font-size: 1.1rem;
}

.trim-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-preview,
.btn-trim {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-preview {
    background: var(--audio-trimmer-warning);
    color: var(--bg-primary);
}

.btn-preview:hover {
    background: #e67e22;
    transform: translateY(-2px);
}

.btn-trim {
    background: var(--audio-trimmer-primary);
    color: var(--bg-primary);
}

.btn-trim:hover {
    background: var(--audio-trimmer-primary-hover);
    transform: translateY(-2px);
}

/* Export Section */
.export-section {
    background: var(--audio-trimmer-card-bg);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--audio-trimmer-shadow);
}

.export-header h3 {
    color: var(--audio-trimmer-text);
    margin: 0 0 2rem 0;
    font-size: 1.5rem;
    font-weight: 600;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--audio-trimmer-border);
}

.export-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-group label {
    font-weight: 600;
    color: var(--audio-trimmer-text);
    font-size: 0.95rem;
}

.setting-group select {
    padding: 0.75rem;
    border: 2px solid var(--audio-trimmer-border);
    border-radius: 8px;
    background: var(--audio-trimmer-bg);
    color: var(--audio-trimmer-text);
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}

.setting-group select:focus {
    outline: none;
    border-color: var(--audio-trimmer-primary);
}

.export-actions {
    text-align: center;
    margin-bottom: 2rem;
}

.btn-download {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    background: var(--audio-trimmer-secondary);
    color: var(--bg-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: var(--success-color);
    transform: translateY(-2px);
}

.trimmed-audio-player {
    background: var(--audio-trimmer-bg);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 8px;
    padding: 1.5rem;
}

.trimmed-audio-player h4 {
    margin: 0 0 1rem 0;
    color: var(--audio-trimmer-text);
}

.trimmed-audio-player audio {
    width: 100%;
}

.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .tool-layout {
        gap: 1.5rem;
    }
    
    .upload-section,
    .waveform-section,
    .trim-controls,
    .export-section {
        padding: 1.5rem;
    }
    
    .waveform-header,
    .trim-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .playback-controls {
        width: 100%;
        justify-content: center;
    }
    
    .trim-inputs,
    .export-settings {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .trim-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-preview,
    .btn-trim,
    .btn-download {
        min-width: 200px;
    }
    
    #waveformCanvas {
        height: 150px;
    }
}

/* Instructions Section */
.instructions-section {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #e9ecef 100%);
    padding: 4rem 0;
    margin: 3rem 0;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.section-title {
    color: var(--audio-trimmer-text);
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--audio-trimmer-primary), var(--audio-trimmer-secondary));
    border-radius: 2px;
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.instruction-item {
    background: var(--bg-primary);
    border: 1px solid var(--audio-trimmer-border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.instruction-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--audio-trimmer-primary), var(--audio-trimmer-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.instruction-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    border-color: var(--audio-trimmer-primary);
}

.instruction-item:hover::before {
    opacity: 1;
}

.instruction-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    filter: grayscale(0.3);
    transition: filter 0.3s ease;
}

.instruction-item:hover .instruction-icon {
    filter: grayscale(0);
}

.instruction-item h3 {
    color: var(--audio-trimmer-text);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.instruction-item:hover h3 {
    color: var(--audio-trimmer-primary);
}

.instruction-item p {
    color: var(--audio-trimmer-text-light);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* Enhanced Mobile Responsiveness for Instructions */
@media (max-width: 768px) {
    .instructions-section {
        padding: 2.5rem 0;
        margin: 2rem 0;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .instructions-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .instruction-item {
        padding: 1.5rem;
    }
    
    .instruction-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
    }
    
    .instruction-item h3 {
        font-size: 1.2rem;
    }
    
    .instruction-item p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .instructions-section {
        padding: 2rem 0;
        margin: 1.5rem 0;
    }
    
    .section-title {
        font-size: 1.6rem;
        margin-bottom: 1.5rem;
    }
    
    .instruction-item {
        padding: 1.25rem;
    }
    
    .instruction-icon {
        font-size: 2.2rem;
        margin-bottom: 0.75rem;
    }
    
    .instruction-item h3 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    
    .instruction-item p {
        font-size: 0.85rem;
    }
}


/* Tool Hero Meta Pills */
.tool-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.meta-pill {
    background: rgba(236, 72, 153, 0.12);
    color: #831843;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    border: 1px solid rgba(236, 72, 153, 0.25);
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
    padding: 4rem 0;
    margin: 3rem 0;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    background: var(--bg-primary);
    border: 1px solid #f9a8d4;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ec4899, #f472b6);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(236, 72, 153, 0.15);
    border-color: #ec4899;
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    filter: grayscale(0.3);
    transition: filter 0.3s ease;
}

.feature-item:hover .feature-icon {
    filter: grayscale(0);
}

.feature-item h4 {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.feature-item:hover h4 {
    color: #ec4899;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
}

/* Dark mode element overrides */
[data-theme="dark"] .tool-card {
    background: var(--bg-card, #1e293b);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] .tool-hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--input-bg, #1e293b);
    color: var(--text-primary, #f8fafc);
    border-color: var(--border-color, #334155);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted, #64748b);
}

[data-theme="dark"] .tab-btn.active {
    color: white;
}

[data-theme="dark"] label {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3,
[data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6 {
    color: var(--text-primary, #f8fafc);
}

[data-theme="dark"] p {
    color: var(--text-secondary, #cbd5e1);
}