/* Full Width Two-Column Layout */
.vocal-remover.full-width {
    padding: 0 0 60px;
    min-height: 100vh;
}

/* Embed mode - compact layout without extra space */
body.embed-mode .vocal-remover.full-width {
    min-height: auto !important;
    padding-bottom: 20px !important;
}

/* Override main-content styles in embed mode */
body.embed-mode .main-content {
    padding-bottom: 0 !important;
    margin-bottom: 0 !important;
    min-height: auto !important;
    background: #2c2c2e !important;
}
[data-theme="light"] body.embed-mode .main-content,
html[data-theme="light"] body.embed-mode .main-content {
    background: #f8fafc !important;
}

/* Remove any footer/bottom space in embed mode */
body.embed-mode,
body.embed-mode html {
    min-height: auto !important;
    overflow-x: hidden !important;
}
body.embed-mode footer,
body.embed-mode .footer,
body.embed-mode .site-footer {
    display: none !important;
}

/* Hide FAQ in embed mode */
body.embed-mode .vr-faq-full {
    display: none !important;
}

/* Page-level layout: content + tools sidebar */
.vr-page-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    padding: 0 32px 30px 32px;
}

.vr-full-container {
    flex: 1;
    min-width: 0;
}

/* Unified card layout */
.vr-card {
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 24px;
    padding: 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    margin-bottom: 32px;
}
[data-theme="dark"] .vr-card {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.12);
    box-shadow: none;
}
.vr-inner-grid { display: grid; grid-template-columns: 1fr 280px; gap: 0; }
.vr-form-side { display: flex; flex-direction: column; padding-right: 20px; }
.vr-info-side { border-left: 1px solid rgba(0,0,0,0.06); padding-left: 32px; display: flex; flex-direction: column; gap: 16px; }
[data-theme="dark"] .vr-info-side { border-left-color: rgba(255,255,255,0.12); }

.vr-main-header {
    margin-bottom: 32px;
    padding: 40px 32px 0 32px;
    text-align: center;
}

.vr-main-header h1 {
    font-size: 2.9rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}

.vr-main-header p {
    color: #64748b;
    font-size: 1.1rem;
    margin: 0 auto 10px;
    line-height: 1.6;
}

/* Stretch inner containers to full width */
.vocal-remover .upload-container,
.vocal-remover .processing-container,
.vocal-remover .results-container,
.vocal-remover .error-container {
    max-width: none;
}

.vr-stats-card,
.vr-demo-card,
.vr-howto-card,
.vr-tips-card,
.vr-formats-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.vr-stats-card {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.stat-row {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-num {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
}

.stat-lbl {
    font-size: 0.75rem;
    color: #9ca3af;
    text-transform: uppercase;
}

/* Demo Card */
.vr-demo-card h3,
.vr-howto-card h3,
.vr-tips-card h3,
.vr-formats-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.demo-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* iOS Style - Demo Play Button */
.demo-item .demo-play-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: #2c2c2e;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.demo-item .demo-play-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

.demo-item .demo-play-btn:active {
    background: #d1d1d6;
    transform: scale(0.98);
}

.demo-item .demo-play-btn.playing {
    background: #e8f5e9;
}

[data-theme="dark"] .demo-item .demo-play-btn {
    background: transparent;
    color: #f5f5f7;
}
[data-theme="dark"] .demo-item .demo-play-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .demo-item .demo-play-btn.playing {
    background: rgba(52, 199, 89, 0.15);
}

.demo-icon-sm {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.demo-icon-sm.original,
.demo-icon-sm.vocals,
.demo-icon-sm.instrumental,
.demo-icon-sm.drums { background: transparent; border: 1px solid rgba(0, 0, 0, 0.15); color: #333; }

[data-theme="dark"] .demo-icon-sm.original,
[data-theme="dark"] .demo-icon-sm.vocals,
[data-theme="dark"] .demo-icon-sm.instrumental,
[data-theme="dark"] .demo-icon-sm.drums { border-color: rgba(255, 255, 255, 0.2); color: #fff; }

.demo-name {
    flex: 1;
    text-align: left;
}

.demo-item .play-icon,
.demo-item .pause-icon {
    flex-shrink: 0;
    opacity: 0.6;
}

/* Howto Card */
.howto-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.howto-step {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: #d1d5db;
}

.howto-step .step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid #2c2c2e;
    color: #2c2c2e;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: none;
}

[data-theme="dark"] .howto-step .step-num {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

/* Tips Card */
.vr-tips-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.vr-tips-card li {
    font-size: 0.85rem;
    color: #9ca3af;
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.vr-tips-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
}

/* Formats Card */
/* iOS Style - Format Tags */
.format-tags {
    display: flex;
    flex-wrap: nowrap;
    gap: 6px;
    margin-bottom: 8px;
}

.format-tags span {
    padding: 5px 10px;
    background: transparent;
    border: 1px solid #d2d2d7;
    border-radius: 14px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #2c2c2e;
}

[data-theme="dark"] .format-tags span {
    background: transparent;
    border-color: #48484a;
    color: #f5f5f7;
}

.format-note {
    font-size: 0.75rem;
    color: #6b7280;
    margin: 0;
}

/* FAQ Full Width */
.vr-faq-full {
    max-width: 1100px;
    margin: 0 auto 48px;
}

.vr-faq-full h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
    text-align: center;
}

.faq-grid-full {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* Light Mode for New Elements */
@media (prefers-color-scheme: light) {
    .vr-main-header h1 { color: #1f2937; }
    .vr-main-header p { color: #6b7280; }
    .vr-stats-card, .vr-demo-card, .vr-howto-card, .vr-tips-card, .vr-formats-card {
        background: #fff;
        border-color: #e2e8f0;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }
    .stat-num { color: #1f2937; }
    .vr-demo-card h3, .vr-howto-card h3, .vr-tips-card h3, .vr-formats-card h3 { color: #1f2937; }
    .demo-item .demo-play-btn {
        background: transparent;
        border: none;
        color: #2c2c2e;
    }
    .demo-item .demo-play-btn:hover { background: rgba(0, 0, 0, 0.04); }
    .howto-step { color: #4b5563; }
    .vr-tips-card li { color: #6b7280; }
    .format-tags span {
        background: transparent;
        border: 1px solid #d2d2d7;
        color: #2c2c2e;
    }
    .vr-faq-full h2 { color: #1f2937; }
}

[data-theme="light"] .vr-main-header h1 { color: #1f2937; }
[data-theme="light"] .vr-main-header p { color: #6b7280; }
[data-theme="light"] .vr-stats-card,
[data-theme="light"] .vr-demo-card,
[data-theme="light"] .vr-howto-card,
[data-theme="light"] .vr-tips-card,
[data-theme="light"] .vr-formats-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .stat-num { color: #1f2937; }
[data-theme="light"] .vr-demo-card h3,
[data-theme="light"] .vr-howto-card h3,
[data-theme="light"] .vr-tips-card h3,
[data-theme="light"] .vr-formats-card h3 { color: #1f2937; }
[data-theme="light"] .demo-item .demo-play-btn {
    background: transparent;
    border: none;
    color: #2c2c2e;
}
[data-theme="light"] .demo-item .demo-play-btn:hover { background: rgba(0, 0, 0, 0.04); }
[data-theme="light"] .howto-step { color: #4b5563; }
[data-theme="light"] .vr-tips-card li { color: #6b7280; }
[data-theme="light"] .format-tags span {
    background: transparent;
    border: 1px solid #d2d2d7;
    color: #2c2c2e;
}
[data-theme="light"] .vr-faq-full h2 { color: #1f2937; }

/* Responsive */
@media (max-width: 992px) {
    .vr-inner-grid { grid-template-columns: 1fr; }
    .vr-form-side { padding-right: 0; }
    .vr-info-side { border-left: none; border-top: 1px solid rgba(0,0,0,0.06); padding-left: 0; padding-top: 24px; margin-top: 24px; }
    [data-theme="dark"] .vr-info-side { border-top-color: rgba(255,255,255,0.12); }
}

@media (max-width: 768px) {
    .vr-info-side,
    .vr-faq-full,
    .output-options {
        display: none !important;
    }
    .vr-page-layout {
        padding: 0 16px 30px 16px;
    }
    .vr-main-header h1 {
        font-size: 1.75rem;
    }
}

/* Old styles below - keep for upload area etc */
.vocal-remover {
    padding: 24px 0 80px;
    min-height: 70vh;
}

.studio-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.studio-breadcrumb a {
    color: #ffffff;
    text-decoration: none;
    transition: opacity 0.2s;
}

.studio-breadcrumb a:hover {
    opacity: 0.8;
}

@media (prefers-color-scheme: light) {
    .studio-breadcrumb a {
        color: #181820;
    }
}

[data-theme="light"] .studio-breadcrumb a {
    color: #181820;
}

.vocal-remover-header {
    text-align: center;
    margin-bottom: 48px;
}

.vocal-remover-header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (prefers-color-scheme: light) {
    .vocal-remover-header h1 {
        background: linear-gradient(135deg, #181820 0%, #181820 100%);
        -webkit-background-clip: text;
        background-clip: text;
    }
}

[data-theme="light"] .vocal-remover-header h1 {
    background: linear-gradient(135deg, #181820 0%, #181820 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.vocal-remover-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin: 0 auto;
    max-width: 850px;
    line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    .vocal-remover-header p {
        color: #1d1d1f;
    }
}

[data-theme="dark"] .vocal-remover-header p {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .vocal-remover-header p {
        color: #4b5563;
    }
}

[data-theme="light"] .vocal-remover-header p {
    color: #4b5563;
}

/* Auth Required Card */
.auth-required-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    max-width: 480px;
    margin: 0 auto 48px;
}

.auth-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .auth-icon {
        background: rgba(31, 41, 55, 0.1);
        color: #181820;
    }
}

[data-theme="light"] .auth-icon {
    background: rgba(31, 41, 55, 0.1);
    color: #181820;
}

.auth-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.auth-required-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.auth-required-card p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.auth-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}


/* Upload Container */
.upload-container {
    max-width: 100%;
    width: 100%;
    margin: 0 0 64px;
}

.upload-area {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px dashed rgba(255, 255, 255, 0.25);
    border-radius: 24px;
    padding: 80px 48px;
    min-height: 580px;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-area:hover::before,
.upload-area.dragover::before {
    opacity: 1;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: light) {
    .upload-area {
        background: rgba(31, 41, 55, 0.03);
        border-color: rgba(31, 41, 55, 0.3);
    }
    .upload-area::before {
        background: radial-gradient(circle at 50% 0%, rgba(31, 41, 55, 0.1) 0%, transparent 70%);
    }
    .upload-area:hover,
    .upload-area.dragover {
        border-color: #181820;
        box-shadow: 0 20px 40px rgba(31, 41, 55, 0.15);
    }
}

[data-theme="light"] .upload-area {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .upload-area::before {
    background: radial-gradient(circle at 50% 0%, rgba(30, 41, 59, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .upload-area:hover,
[data-theme="light"] .upload-area.dragover {
    border-color: #1e293b;
    box-shadow: 0 20px 40px rgba(30, 41, 59, 0.12);
}

.upload-icon {
    color: #ffffff;
    margin-bottom: 20px;
    opacity: 0.9;
}

@media (prefers-color-scheme: light) {
    .upload-icon {
        color: #181820;
    }
}

[data-theme="light"] .upload-icon {
    color: #181820;
}

.upload-content h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.upload-formats {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
    letter-spacing: 0.3px;
}

/* OR Divider */
.upload-divider {
    display: flex;
    align-items: center;
    margin: 28px 0 24px;
    padding: 0 20px;
}

.upload-divider::before,
.upload-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
}

.upload-divider span {
    padding: 0 16px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

[data-theme="light"] .upload-divider::before,
[data-theme="light"] .upload-divider::after {
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .upload-divider span {
    color: rgba(0, 0, 0, 0.35);
}

/* URL Input Section */
.url-input-section {
    padding: 0 20px;
    text-align: left;
}

.url-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

[data-theme="light"] .url-label {
    color: rgba(0, 0, 0, 0.6);
}

.url-input-wrapper {
    display: flex;
    gap: 10px;
}

.url-input {
    flex: 1;
    padding: 14px 18px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: #fff;
    outline: none;
    transition: all 0.2s ease;
}

.url-input::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.url-input:focus {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.12);
}

[data-theme="light"] .url-input {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.12);
    color: #1e293b;
}

[data-theme="light"] .url-input::placeholder {
    color: rgba(0, 0, 0, 0.35);
}

[data-theme="light"] .url-input:focus {
    border-color: rgba(0, 0, 0, 0.3);
    background: rgba(0, 0, 0, 0.06);
}

.url-submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1.5px solid #2c2c2e;
    border-radius: 12px;
    color: #2c2c2e;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.url-submit-btn:hover {
    transform: scale(1.05);
    background: rgba(0, 0, 0, 0.05);
    box-shadow: none;
}

[data-theme="dark"] .url-submit-btn {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

[data-theme="dark"] .url-submit-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.url-submit-btn:active {
    transform: scale(0.98);
}

.url-submit-btn:disabled {
    opacity: 1;
    cursor: not-allowed;
    transform: none;
}

/* Separation Tabs Container */
.separation-tabs-container {
    display: flex;
    justify-content: center;
    margin-top: 20px;
    margin-bottom: 10px;
}

/* Separation Tabs - iOS Style */
.separation-tabs {
    display: inline-flex;
    gap: 0;
    padding: 4px;
    background: rgba(118, 118, 128, 0.12);
    border-radius: 22px;
}

.sep-tab {
    cursor: pointer;
    transition: all 0.2s ease;
}

.sep-tab input {
    display: none;
}

.sep-tab-content {
    display: block;
    text-align: center;
    padding: 10px 28px;
    font-weight: 500;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    border-radius: 18px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.sep-tab input:checked + .sep-tab-content {
    background: rgba(255, 255, 255, 0.95);
    color: #000;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 3px 1px rgba(0, 0, 0, 0.04);
}

.sep-tab:hover:not(:has(input:checked)) .sep-tab-content {
    color: rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .separation-tabs {
    background: rgba(118, 118, 128, 0.12);
}

[data-theme="light"] .sep-tab-content {
    color: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .sep-tab input:checked + .sep-tab-content {
    background: #fff;
    color: #000;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 3px 1px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .sep-tab:hover:not(:has(input:checked)) .sep-tab-content {
    color: rgba(0, 0, 0, 0.7);
}

/* Progress */
.upload-progress {
    padding: 24px;
}

.progress-icon {
    margin-bottom: 16px;
}

.spinner {
    animation: spin 1s linear infinite;
}

.spinner-small {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.progress-bar {
    width: 100%;
    max-width: 300px;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 100px;
    overflow: hidden;
    margin: 20px auto 12px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffffff, #e5e7eb, #ffffff);
    background-size: 200% 100%;
    border-radius: 100px;
    width: 0%;
    transition: width 0.3s ease;
    animation: shimmer 2s infinite linear;
}

@media (prefers-color-scheme: light) {
    .progress-fill {
        background: linear-gradient(90deg, #181820, #181820, #181820);
        background-size: 200% 100%;
    }
}

[data-theme="light"] .progress-fill {
    background: linear-gradient(90deg, #181820, #181820, #181820);
    background-size: 200% 100%;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.upload-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 24px;
    padding: 16px 24px;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border);
}
[data-theme="dark"] .upload-info {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}
[data-theme="light"] .upload-info {
    background: #f9fafb;
    border: 2px solid #e2e8f0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.info-item {
    display: flex;
    gap: 8px;
    font-size: 0.9rem;
    align-items: center;
}

.info-label {
    color: var(--text-muted);
}

.info-value {
    font-weight: 600;
    color: var(--text);
}

/* Results */
.results-container {
    max-width: none;
    margin: 0;
    background: none;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
}

.results-header {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    text-align: center;
}

.results-header h2 {
    font-size: 1.5rem;
    margin: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    line-height: 1.4;
}

.results-checkmark {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .results-checkmark {
        color: #181820;
    }
}

[data-theme="light"] .results-checkmark {
    color: #181820;
}

/* Master Player */
.master-player {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    margin-bottom: 24px;
}

@media (prefers-color-scheme: light) {
    .master-player {
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid rgba(0, 0, 0, 0.06);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
}

[data-theme="light"] .master-player {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.master-play-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 1.5px solid #2c2c2e;
    background: transparent;
    color: #2c2c2e;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
    box-shadow: none;
}

.master-play-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: scale(1.05);
    box-shadow: none;
}

[data-theme="dark"] .master-play-btn {
    border-color: #fff;
    background: transparent;
    color: #fff;
}

[data-theme="dark"] .master-play-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.master-progress-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.master-time {
    font-size: 0.875rem;
    font-weight: 500;
    color: #ffffff;
    font-variant-numeric: tabular-nums;
    min-width: 45px;
}

@media (prefers-color-scheme: light) {
    .master-time {
        color: #181820;
    }
}

[data-theme="light"] .master-time {
    color: #181820;
}

.master-progress {
    flex: 1;
    height: 8px;
    background: var(--border);
    border-radius: 100px;
    cursor: pointer;
    position: relative;
}

.master-progress-fill {
    height: 100%;
    background: #9ca3af;
    border-radius: 100px;
    width: 0%;
    transition: width 0.1s linear;
}

@media (prefers-color-scheme: light) {
    .master-progress-fill {
        background: #181820;
    }
}

[data-theme="light"] .master-progress-fill {
    background: #181820;
}

/* Volume Control */
.stem-volume {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.volume-icon {
    color: #9ca3af;
    flex-shrink: 0;
}

@media (prefers-color-scheme: light) {
    .volume-icon {
        color: #6b7280;
    }
}

[data-theme="light"] .volume-icon {
    color: #6b7280;
}

.volume-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 100px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: #9ca3af;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #9ca3af;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

@media (prefers-color-scheme: light) {
    .volume-slider::-webkit-slider-thumb {
        background: #181820;
    }
    .volume-slider::-moz-range-thumb {
        background: #181820;
    }
}

[data-theme="light"] .volume-slider::-webkit-slider-thumb {
    background: #181820;
}

[data-theme="light"] .volume-slider::-moz-range-thumb {
    background: #181820;
}

.volume-value {
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 32px;
    text-align: right;
}

.stems-grid {
    display: grid;
    gap: 12px;
    margin-bottom: 24px;
}

.stem-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.stem-item:hover {
    border-color: var(--border);
    background: var(--card-bg);
}

@media (prefers-color-scheme: light) {
    .stem-item {
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid rgba(0, 0, 0, 0.06);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }
    .stem-item:hover {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }
}

[data-theme="light"] .stem-item {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .stem-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.stem-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 8px;
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .stem-icon {
        color: #181820;
    }
}

[data-theme="light"] .stem-icon {
    color: #181820;
}

.stem-icon svg {
    width: 20px;
    height: 20px;
}

/* Individual stem play button */
.stem-play-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--bg-secondary);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.stem-play-btn:hover {
    background: #181820;
    color: #ffffff;
}

.stem-play-btn.playing {
    background: #181820;
    color: #1d1d1f;
}

@media (prefers-color-scheme: light) {
    .stem-play-btn:hover,
    .stem-play-btn.playing {
        background: #181820;
        color: #1d1d1f;
    }
}

[data-theme="light"] .stem-play-btn:hover,
[data-theme="light"] .stem-play-btn.playing {
    background: #181820;
    color: #1d1d1f;
}

.stem-info {
    flex: 0 0 auto;
    min-width: 120px;
}

.stem-name {
    font-weight: 600;
    margin-bottom: 0;
}

.stem-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.stem-progress {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 100px;
    cursor: pointer;
    position: relative;
    min-width: 80px;
}

.stem-progress:hover {
    height: 8px;
}

.stem-progress-fill {
    height: 100%;
    background: #9ca3af;
    border-radius: 100px;
    width: 0%;
    transition: width 0.1s linear;
}

@media (prefers-color-scheme: light) {
    .stem-progress-fill {
        background: #181820;
    }
}

[data-theme="light"] .stem-progress-fill {
    background: #181820;
}

.stem-time {
    font-size: 0.7rem;
    color: #9ca3af;
    font-variant-numeric: tabular-nums;
    min-width: 32px;
    text-align: center;
}

@media (prefers-color-scheme: light) {
    .stem-time {
        color: #6b7280;
    }
}

[data-theme="light"] .stem-time {
    color: #6b7280;
}

.stem-volume-control {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.stem-volume-control .volume-icon {
    color: #9ca3af;
    flex-shrink: 0;
    cursor: pointer;
    transition: color 0.2s;
}

.stem-volume-control .volume-icon:hover {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .stem-volume-control .volume-icon {
        color: #6b7280;
    }
    .stem-volume-control .volume-icon:hover {
        color: #181820;
    }
}

[data-theme="light"] .stem-volume-control .volume-icon {
    color: #6b7280;
}

[data-theme="light"] .stem-volume-control .volume-icon:hover {
    color: #181820;
}

.stem-volume-control .volume-slider {
    flex: 1;
    min-width: 150px;
}

/* Audio Player */
.stem-player {
    display: flex;
    align-items: center;
    gap: 10px;
}

.player-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: #ffffff;
    color: #181820;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.player-btn:hover {
    background: #e5e7eb;
    transform: scale(1.05);
}

@media (prefers-color-scheme: light) {
    .player-btn {
        background: #181820;
        color: #1d1d1f;
    }
    .player-btn:hover {
        background: #181820;
    }
}

[data-theme="light"] .player-btn {
    background: #181820;
    color: #1d1d1f;
}

[data-theme="light"] .player-btn:hover {
    background: #181820;
}

.player-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
    min-width: 36px;
    flex-shrink: 0;
}

.player-progress {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 100px;
    cursor: pointer;
    position: relative;
    min-width: 100px;
}

.player-progress:hover {
    height: 8px;
}

.player-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffffff, #e5e7eb);
    border-radius: 100px;
    width: 0%;
    transition: width 0.1s linear;
    position: relative;
}

@media (prefers-color-scheme: light) {
    .player-progress-fill {
        background: linear-gradient(90deg, #181820, #181820);
    }
}

[data-theme="light"] .player-progress-fill {
    background: linear-gradient(90deg, #181820, #181820);
}

.player-progress-fill::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.2s;
}

.player-progress:hover .player-progress-fill::after {
    opacity: 1;
}

.stem-actions {
    display: flex;
    gap: 8px;
}

.stem-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    text-decoration: none;
}

.stem-btn:hover {
    border-color: #ffffff;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: light) {
    .stem-btn:hover {
        border-color: #181820;
        color: #181820;
        background: rgba(31, 41, 55, 0.1);
    }
}

[data-theme="light"] .stem-btn:hover {
    border-color: #181820;
    color: #181820;
    background: rgba(31, 41, 55, 0.1);
}

.stem-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.7;
    white-space: nowrap;
}

.download-btn.disabled,
.download-btn:disabled {
    opacity: 0.5;
    cursor: wait;
}

.download-btn .spin {
    animation: spin 1s linear infinite;
}

.results-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 16px;
}

.results-notice {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* How It Works */
.vr-how-it-works {
    max-width: 700px;
    margin: 48px auto 0;
    padding: 32px 0;
}

.vr-how-it-works h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    text-align: center;
}

[data-theme="light"] .vr-how-it-works h3 {
    color: #181820;
}

.vr-steps {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
    overflow: visible;
}

.vr-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    position: relative;
    overflow: visible;
}

.vr-step:not(:last-child) {
    margin-right: 60px;
}

.vr-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 13px;
    left: calc(50% + 18px);
    width: 64px;
    height: 3px;
    background: #181820;
    border-radius: 2px;
    z-index: 0;
}

.step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid #2c2c2e;
    color: #2c2c2e;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    box-shadow: none;
}

[data-theme="dark"] .step-num {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

.step-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

[data-theme="light"] .step-text {
    color: #4b5563;
}

/* Error */
.error-container {
    max-width: none;
    margin: 0;
    background: none;
    border: none;
    border-radius: 0;
    padding: 24px 0;
    text-align: center;
}

.error-icon {
    color: #ef4444;
    margin-bottom: 16px;
}

.error-container h3 {
    margin-bottom: 8px;
}

.error-container p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* How it works */
.how-it-works {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 0;
}

.how-it-works h2 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
}

@media (prefers-color-scheme: dark) {
    .how-it-works h2 {
        color: #ffffff;
    }
}

[data-theme="dark"] .how-it-works h2 {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .how-it-works h2 {
        color: #181820;
    }
}

[data-theme="light"] .how-it-works h2 {
    color: #181820;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
    z-index: 0;
}

.step {
    text-align: center;
    padding: 0 16px;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1.5px solid #2c2c2e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: #2c2c2e;
    margin: 0 auto 12px;
    box-shadow: none;
}

[data-theme="light"] .step-number {
    background: #2c2c2e !important;
    border: 1.5px solid #2c2c2e;
    color: #fff;
}

[data-theme="dark"] .step-number {
    background: transparent;
    border-color: #fff;
    color: #fff;
    box-shadow: none;
}

.step h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.step p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

@media (prefers-color-scheme: dark) {
    .step h4 {
        color: #ffffff;
    }
    .step p {
        color: #ffffff;
    }
}

[data-theme="dark"] .step h4 {
    color: #ffffff;
}

[data-theme="dark"] .step p {
    color: #ffffff;
}

/* Dark mode - stronger borders and text (for :root.dark theme) */
:root.dark .auth-required-card,
:root.dark .error-container,
:root.dark .project-item { border: 1px solid rgba(255, 255, 255, 0.5) !important; }
:root.dark .step p { color: #ffffff; }
:root.dark label { color: #ffffff; }

@media (prefers-color-scheme: light) {
    .step h4 {
        color: #181820;
    }
    .step p {
        color: #6b7280;
    }
}

[data-theme="light"] .step h4 {
    color: #181820;
}

[data-theme="light"] .step p {
    color: #6b7280;
}

/* My Projects */
.my-projects {
    margin: 48px 0 0;
    padding-top: 24px;
    padding-bottom: 80px;
}

.my-projects h2 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

@media (prefers-color-scheme: dark) {
    .my-projects h2 {
        color: #ffffff;
    }
}

[data-theme="dark"] .my-projects h2 {
    color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .my-projects h2 {
        color: #181820;
    }
}

[data-theme="light"] .my-projects h2 {
    color: #181820;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.project-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    transition: all 0.2s ease;
}

.project-item:hover {
    border-color: #ffffff;
}

@media (prefers-color-scheme: light) {
    .project-item {
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid rgba(0, 0, 0, 0.06);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    }
    .project-item:hover {
        border-color: rgba(0, 0, 0, 0.12);
    }
}

[data-theme="light"] .project-item {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .project-item:hover {
    border-color: rgba(0, 0, 0, 0.12);
}

.project-item.processing {
    opacity: 0.7;
}

.project-item.failed {
    border-color: rgba(239, 68, 68, 0.3);
}

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

.project-name {
    font-weight: 600;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.project-status {
    padding: 2px 8px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
}

.project-status.status-completed {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.project-status.status-processing {
    background: rgba(255, 255, 255, 0.15);
    color: #1d1d1f;
}

@media (prefers-color-scheme: light) {
    .project-status.status-processing {
        background: rgba(31, 41, 55, 0.15);
        color: #181820;
    }
}

[data-theme="light"] .project-status.status-processing {
    background: rgba(31, 41, 55, 0.15);
    color: #181820;
}

.project-status.status-failed {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.project-actions {
    flex-shrink: 0;
    margin-left: 16px;
    display: flex;
    gap: 8px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
    border-radius: 10px;
}

.btn-sm.btn-delete {
    background: transparent;
    color: #9ca3af;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 50px;
}

.btn-sm.btn-delete:hover {
    background: transparent;
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.4);
}

@media (prefers-color-scheme: light) {
    .btn-sm.btn-delete {
        border-color: #1d1d1f;
        color: #6b7280;
    }
    .btn-sm.btn-delete:hover {
        background: transparent;
        color: #1f2937;
        border-color: rgba(0, 0, 0, 0.3);
    }
}

[data-theme="light"] .btn-sm.btn-delete {
    border-color: #1d1d1f;
    color: #6b7280;
}

[data-theme="light"] .btn-sm.btn-delete:hover {
    background: transparent;
    color: #1f2937;
    border-color: rgba(0, 0, 0, 0.3);
}

/* Override btn-primary - iOS pill style */
.vocal-remover .btn-primary {
    background: #fff !important;
    border: 1px solid #d2d2d7 !important;
    border-radius: 22px;
    color: #2c2c2e !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
    padding: 12px 24px;
    font-weight: 500;
}

.vocal-remover .btn-primary:hover {
    background: #f5f5f7 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

.vocal-remover .btn-primary svg {
    stroke: #2c2c2e !important;
}

[data-theme="dark"] .vocal-remover .btn-primary {
    background: rgba(255, 255, 255, 0.15) !important;
    border: 1px solid #48484a !important;
    color: #fff !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) !important;
}
[data-theme="dark"] .vocal-remover .btn-primary:hover {
    background: rgba(255, 255, 255, 0.22) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25) !important;
}

[data-theme="dark"] .vocal-remover .btn-primary svg {
    stroke: #fff !important;
}

/* iOS pill style for secondary button */
.vocal-remover .btn-secondary {
    background: #ffffff !important;
    color: #1d1d1f !important;
    border: 1px solid #d1d5db !important;
    border-radius: 980px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    padding: 12px 24px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.vocal-remover .btn-secondary:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.vocal-remover .btn-secondary svg {
    stroke: #1d1d1f !important;
}

[data-theme="dark"] .vocal-remover .btn-secondary {
    background: transparent !important;
    color: #f5f5f7 !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    box-shadow: none !important;
}

[data-theme="dark"] .vocal-remover .btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.5) !important;
}

[data-theme="dark"] .vocal-remover .btn-secondary svg {
    stroke: #f5f5f7 !important;
}

/* Responsive */
@media (max-width: 768px) {
    .vocal-remover-header h1 {
        font-size: 1.75rem;
    }

    .upload-area {
        padding: 32px 24px;
    }

    .sep-tab-content {
        padding: 14px 16px;
        font-size: 0.85rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .results-actions {
        flex-direction: column;
    }

    .auth-buttons {
        flex-direction: column;
    }

    .master-player {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .master-play-btn {
        width: 56px;
        height: 56px;
    }

    .master-progress-wrapper {
        width: 100%;
    }

    .stem-item {
        display: flex;
        flex-wrap: nowrap;
        padding: 12px 14px;
        gap: 10px;
        align-items: center;
    }

    .stem-icon {
        width: 28px;
        height: 28px;
        flex-shrink: 0;
    }

    .stem-info {
        flex: 0 0 auto;
        min-width: 80px;
    }

    .stem-name {
        font-size: 0.85rem;
        font-weight: 600;
        margin-bottom: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .stem-volume-control {
        flex: 1;
        max-width: none;
        gap: 6px;
    }

    .stem-volume-control .volume-slider {
        flex: 1;
        min-width: 60px;
    }

    .stem-actions {
        display: flex;
        gap: 6px;
        flex-shrink: 0;
    }

    .stem-btn {
        width: 36px;
        height: 36px;
    }

    .stems-grid {
        gap: 8px;
    }

    .master-player {
        padding: 16px;
        gap: 12px;
        border-radius: 16px;
    }

    .master-play-btn {
        width: 48px;
        height: 48px;
    }
}

/* Social Proof Stats */
.social-proof {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    margin-bottom: 48px;
    padding: 20px 32px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.stat-label {
    font-size: 0.85rem;
    color: #9ca3af;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

@media (prefers-color-scheme: light) {
    .social-proof {
        background: rgba(0, 0, 0, 0.02);
        border-color: rgba(0, 0, 0, 0.08);
    }
    .stat-number {
        color: #1f2937;
    }
    .stat-divider {
        background: rgba(0, 0, 0, 0.1);
    }
}

[data-theme="light"] .social-proof {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .stat-number {
    color: #1f2937;
}

[data-theme="light"] .stat-divider {
    background: rgba(0, 0, 0, 0.1);
}

/* Audio Demo Section */
.audio-demo-section {
    margin-bottom: 48px;
    text-align: center;
}

.audio-demo-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}

.demo-subtitle {
    color: #9ca3af;
    margin-bottom: 24px;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.demo-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px 16px;
    transition: all 0.2s ease;
}

.demo-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.demo-card-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.demo-card-header span {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
}

.demo-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.demo-icon.original,
.demo-icon.vocals,
.demo-icon.instrumental,
.demo-icon.drums { background: transparent; border: 1px solid rgba(0, 0, 0, 0.15); color: #333; }

[data-theme="dark"] .demo-icon.original,
[data-theme="dark"] .demo-icon.vocals,
[data-theme="dark"] .demo-icon.instrumental,
[data-theme="dark"] .demo-icon.drums { border-color: rgba(255, 255, 255, 0.2); color: #fff; }

/* iOS Style - Demo Play Button (general) */
.demo-play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: #2c2c2e;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.demo-play-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

.demo-play-btn:active {
    background: #d1d1d6;
    transform: scale(0.98);
}

.demo-play-btn.playing {
    background: #e8f5e9;
}

[data-theme="dark"] .demo-play-btn {
    background: transparent;
    color: #f5f5f7;
}
[data-theme="dark"] .demo-play-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}
[data-theme="dark"] .demo-play-btn.playing {
    background: rgba(52, 199, 89, 0.15);
}

@media (prefers-color-scheme: light) {
    .audio-demo-section h2 { color: #1f2937; }
    .demo-card {
        background: #fff;
        border-color: #e2e8f0;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }
    .demo-card:hover {
        border-color: #cbd5e1;
        background: #fff;
    }
    .demo-card-header span { color: #1f2937; }
    .demo-play-btn {
        background: transparent;
        border: none;
        color: #2c2c2e;
    }
    .demo-play-btn:hover {
        background: rgba(0, 0, 0, 0.04);
    }
}

[data-theme="light"] .audio-demo-section h2 { color: #1f2937; }
[data-theme="light"] .demo-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .demo-card:hover {
    border-color: rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.9);
}
[data-theme="light"] .demo-card-header span { color: #1f2937; }
[data-theme="light"] .demo-play-btn {
    background: transparent;
    border: none;
    color: #2c2c2e;
}
[data-theme="light"] .demo-play-btn:hover {
    background: rgba(0, 0, 0, 0.04);
}

/* iOS Style - Output Options */
/* Single row output options */
.output-options {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    gap: 32px;
    margin: 24px 0;
    padding: 16px 24px;
    background: transparent;
    border: none;
    border-radius: 12px;
}
[data-theme="dark"] .output-options {
    background: transparent;
}
[data-theme="light"] .output-options {
    background: transparent;
}

.options-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

/* Visual separator between option groups */
.options-group:not(:last-child) {
    padding-right: 32px;
    border-right: 1px solid rgba(0, 0, 0, 0.1);
}
[data-theme="dark"] .options-group:not(:last-child) {
    border-right-color: rgba(255, 255, 255, 0.15);
}
[data-theme="light"] .options-group:not(:last-child) {
    border-right-color: rgba(0, 0, 0, 0.08);
}

@media (max-width: 768px) {
    .output-options {
        flex-wrap: wrap;
        gap: 16px 24px;
        padding: 16px 20px;
    }
    .options-group:not(:last-child) {
        padding-right: 24px;
    }
}

@media (max-width: 540px) {
    .output-options {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px 20px;
    }
    .options-group {
        flex-direction: row;
        align-items: center;
    }
    .options-group:not(:last-child) {
        padding-right: 20px;
        border-right: 1px solid rgba(0, 0, 0, 0.08);
        border-bottom: none;
    }
    [data-theme="dark"] .options-group:not(:last-child) {
        border-right-color: rgba(255, 255, 255, 0.1);
    }
    .stem-checkboxes {
        gap: 8px;
    }
}

/* Options Label - inline */
.options-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}
[data-theme="dark"] .options-label {
    color: #8e8e93;
}
[data-theme="light"] .options-label {
    color: #6b7280;
}

/* Stem Checkboxes - Simple inline */
.stem-checkboxes {
    display: flex;
    gap: 12px;
    flex-wrap: nowrap;
}

.stem-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: default;
}

.stem-checkbox input {
    display: none;
}

.stem-checkbox .checkmark {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    background: transparent;
    border: 1.5px solid #2c2c2e;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stem-checkbox .checkmark::after {
    content: '';
    width: 4px;
    height: 8px;
    border: solid #2c2c2e;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    margin-top: -2px;
}

.stem-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: #2c2c2e;
}

[data-theme="dark"] .stem-checkbox .checkmark {
    background: transparent;
    border-color: #fff;
}
[data-theme="dark"] .stem-checkbox .checkmark::after {
    border-color: #fff;
}
[data-theme="dark"] .stem-name {
    color: #f5f5f7;
}

/* iOS Style - Format Selector */
.format-selector {
    display: flex;
    gap: 8px;
    background: transparent;
    border-radius: 0;
    padding: 0;
}

.format-option {
    cursor: pointer;
}

.format-option input {
    display: none;
}

.format-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 20px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #8e8e93;
    transition: all 0.2s ease;
}

.format-option input:checked + .format-badge {
    background: #ffffff;
    color: #2c2c2e;
    font-weight: 500;
    border: 1px solid #d2d2d7;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .format-selector {
    background: transparent;
}
[data-theme="dark"] .format-badge {
    color: #8e8e93;
}
[data-theme="dark"] .format-option input:checked + .format-badge {
    background: #2c2c2e;
    color: #f5f5f7;
    border-color: #48484a;
    box-shadow: none;
}

[data-theme="light"] .stem-checkbox {
    background: transparent;
}
[data-theme="light"] .stem-checkbox .checkmark {
    background: transparent;
    border-color: #2c2c2e;
}
[data-theme="light"] .stem-checkbox .checkmark::after {
    border-color: #2c2c2e;
}
[data-theme="light"] .stem-name { color: #2c2c2e; }
[data-theme="light"] .format-selector {
    background: transparent;
}
[data-theme="light"] .format-badge {
    background: transparent;
    border: 1px solid transparent;
    color: #8e8e93;
}
[data-theme="light"] .format-option input:checked + .format-badge {
    background: #ffffff;
    color: #2c2c2e;
    font-weight: 500;
    border: 1px solid #d2d2d7;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* Mode Selector (Fast/Quality) */
.mode-selector {
    display: flex;
    gap: 8px;
}

.mode-option {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.mode-option input {
    display: none;
}

.mode-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #9ca3af;
    transition: all 0.2s ease;
}

.mode-badge svg {
    opacity: 0.7;
}

.mode-time {
    font-size: 0.7rem;
    color: #6b7280;
}

.mode-option input:checked + .mode-badge {
    border-color: transparent;
    color: #fff;
}

.mode-option input:checked + .mode-badge.mode-fast {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.mode-option input:checked + .mode-badge.mode-quality {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

.mode-option input:checked + .mode-badge svg {
    opacity: 1;
}

[data-theme="light"] .mode-badge {
    background: #fff;
    border-color: #e2e8f0;
    color: #6b7280;
}

[data-theme="light"] .mode-option input:checked + .mode-badge.mode-fast {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: #fff;
}

[data-theme="light"] .mode-option input:checked + .mode-badge.mode-quality {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: #fff;
}

@media (max-width: 768px) {
    .mode-selector {
        gap: 6px;
    }
    .mode-badge {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    .mode-time {
        font-size: 0.65rem;
    }
}

/* FAQ Section */
.vr-faq-section {
    max-width: 900px;
    margin: 48px auto;
    padding: 0 16px;
}

.vr-faq-section h2 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 32px;
    color: #fff;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.faq-item {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 20px;
    transition: all 0.2s ease;
}

.faq-item:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.faq-question svg {
    flex-shrink: 0;
    color: #1e293b;
}

.faq-answer {
    font-size: 0.9rem;
    color: #9ca3af;
    line-height: 1.6;
    padding-left: 32px;
}

@media (prefers-color-scheme: light) {
    .vr-faq-section h2 { color: #1f2937; }
    .faq-item {
        background: #fff;
        border-color: #e2e8f0;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }
    .faq-item:hover { border-color: #cbd5e1; }
    .faq-question { color: #1f2937; }
    .faq-answer { color: #6b7280; }
}

[data-theme="light"] .vr-faq-section h2 { color: #1f2937; }
[data-theme="light"] .faq-item {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
[data-theme="light"] .faq-item:hover { border-color: rgba(0, 0, 0, 0.1); }
[data-theme="light"] .faq-question { color: #1f2937; }
[data-theme="light"] .faq-question svg { color: #1e293b; }
[data-theme="light"] .faq-answer { color: #6b7280; }

/* Tips Section */
.tips-section {
    max-width: 800px;
    margin: 48px auto;
    text-align: center;
}

.tips-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: #fff;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    text-align: left;
}

.tip-icon {
    font-size: 1.25rem;
}

.tip-item span:last-child {
    font-size: 0.9rem;
    color: #d1d5db;
}

@media (prefers-color-scheme: light) {
    .tips-section h3 { color: #1f2937; }
    .tip-item {
        background: #fff;
        border-color: #e2e8f0;
    }
    .tip-item span:last-child { color: #4b5563; }
}

[data-theme="light"] .tips-section h3 { color: #1f2937; }
[data-theme="light"] .tip-item {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .tip-item span:last-child { color: #4b5563; }

/* Responsive for new sections */
@media (max-width: 768px) {
    .social-proof {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }
    .stat-divider {
        width: 60px;
        height: 1px;
    }
    .demo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .demo-grid {
        grid-template-columns: 1fr;
    }
    .stem-checkboxes {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 8px;
    }
    .format-selector {
        flex-wrap: nowrap;
    }
}

/* ========== CONTENT SECTIONS ========== */
.pc-section {
    margin: 40px 0 0;
    padding: 48px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.pc-section:first-of-type { margin-top: 48px; }
[data-theme="light"] .pc-section { border-top-color: rgba(0, 0, 0, 0.06); }

.pc-section h2 {
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #ffffff;
}
[data-theme="light"] .pc-section h2 { color: #1f2937; }

.pc-section-subtitle {
    text-align: center;
    color: #9ca3af;
    font-size: 0.9rem;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
[data-theme="light"] .pc-section-subtitle { color: #6b7280; }

.pc-features { padding-top: 48px; }
.pc-features h2 { margin-bottom: 32px; }

.pc-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.pc-feature-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 28px 20px;
    text-align: center;
    transition: all 0.3s ease;
}
[data-theme="light"] .pc-feature-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}
.pc-feature-card:hover { transform: translateY(-4px); }
[data-theme="light"] .pc-feature-card:hover { box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1); }

.pc-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #d1d5db;
}
[data-theme="light"] .pc-feature-icon {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: #374151;
}

.pc-feature-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #ffffff;
}
[data-theme="light"] .pc-feature-card h3 { color: #1f2937; }

.pc-feature-card p {
    font-size: 0.8rem;
    color: #9ca3af;
    line-height: 1.5;
    margin: 0;
    text-align: left;
}
[data-theme="light"] .pc-feature-card p { color: #6b7280; }

.pc-usecases { padding-top: 48px; }
.pc-usecases h2 { margin-bottom: 24px; }

.pc-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.pc-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #d1d5db;
    transition: all 0.2s ease;
}
.pc-pill:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.04);
}
[data-theme="light"] .pc-pill {
    border-color: rgba(0, 0, 0, 0.12);
    color: #374151;
    background: transparent;
}
[data-theme="light"] .pc-pill:hover {
    border-color: rgba(0, 0, 0, 0.25);
    background: rgba(0, 0, 0, 0.03);
}

.pc-pill svg { opacity: 0.6; flex-shrink: 0; }

.pc-technology { padding-top: 48px; }
.pc-technology h2 { margin-bottom: 24px; }

.pc-tech-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 32px;
}
[data-theme="light"] .pc-tech-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.pc-tech-content {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.pc-tech-icon {
    width: 64px;
    height: 64px;
    min-width: 64px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #d1d5db;
}
[data-theme="light"] .pc-tech-icon {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: #374151;
}

.pc-tech-content h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #ffffff;
}
[data-theme="light"] .pc-tech-content h3 { color: #1f2937; }

.pc-tech-content p {
    font-size: 0.85rem;
    color: #9ca3af;
    line-height: 1.65;
    margin: 0 0 10px;
}
.pc-tech-content p:last-child { margin-bottom: 0; }
[data-theme="light"] .pc-tech-content p { color: #6b7280; }

.pc-faq { padding-top: 48px; }
.pc-faq h2 { margin-bottom: 24px; }

.pc-faq-list {
    max-width: none;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pc-faq-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.2s ease;
}
[data-theme="light"] .pc-faq-item {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.pc-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    color: #ffffff;
    text-align: left;
    gap: 12px;
}
[data-theme="light"] .pc-faq-question { color: #1f2937; }
.pc-faq-question:hover { background: rgba(255, 255, 255, 0.03); }
[data-theme="light"] .pc-faq-question:hover { background: rgba(0, 0, 0, 0.02); }

.pc-faq-question svg {
    flex-shrink: 0;
    color: #9ca3af;
    transition: transform 0.3s ease;
}
.pc-faq-item.open .pc-faq-question svg { transform: rotate(180deg); }

.pc-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.pc-faq-item.open .pc-faq-answer {
    max-height: 800px;
    padding: 0 22px 18px;
}

.pc-faq-answer p {
    font-size: 0.85rem;
    color: #9ca3af;
    line-height: 1.65;
    margin: 0;
}
[data-theme="light"] .pc-faq-answer p { color: #6b7280; }

.pc-related { padding-top: 48px; padding-bottom: 24px; }
.pc-related h2 { margin-bottom: 24px; }

.pc-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.pc-related-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 28px 20px;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
}
[data-theme="light"] .pc-related-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}
.pc-related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
}
[data-theme="light"] .pc-related-card:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.12);
}

.pc-related-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    color: #d1d5db;
}
[data-theme="light"] .pc-related-icon {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: #374151;
}

.pc-related-card h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: #ffffff;
}
[data-theme="light"] .pc-related-card h4 { color: #1f2937; }

.pc-related-card p {
    font-size: 0.78rem;
    color: #9ca3af;
    line-height: 1.5;
    margin: 0;
}
[data-theme="light"] .pc-related-card p { color: #6b7280; }

@media (max-width: 1100px) {
    .pc-features-grid { grid-template-columns: repeat(2, 1fr); }
    .pc-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .pc-section { padding-top: 36px; margin-top: 28px; }
    .pc-section h2 { font-size: 1.2rem; }
    .pc-features-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .pc-related-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .pc-tech-content { flex-direction: column; align-items: center; text-align: center; }
    .pc-pills { gap: 8px; }
    .pc-pill { padding: 8px 16px; font-size: 0.8rem; }
}

@media (max-width: 600px) {
    .pc-features-grid { grid-template-columns: 1fr; }
    .pc-related-grid { grid-template-columns: 1fr; }
}