:root {
    --sc-primary: #3b82f6;
    --sc-primary-dark: #2563eb;
    --sc-secondary: #64748b;
    --sc-success: #10b981;
    --sc-text-main: #0f172a;
    --sc-text-sub: #475569;
    --sc-bg: #f8fafc;
    --sc-card-bg: #ffffff;
    --sc-border: #e2e8f0;
    --sc-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sc-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.sc-landing-page {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--sc-bg);
    color: var(--sc-text-main);
    line-height: 1.5;
    width: 100%;
    margin: 0;
    padding: 0;
}

.sc-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.sc-navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--sc-border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1;
}

.sc-navbar .sc-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sc-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--sc-text-main);
}

.sc-logo i {
    color: var(--sc-primary);
    font-size: 24px;
}

.sc-version-pill {
    background: #eff6ff;
    color: var(--sc-primary);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* Hero Section */
.sc-hero {
    padding: 80px 0;
    overflow: hidden;
}

.sc-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.sc-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    color: var(--sc-text-sub);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    margin-bottom: 24px;
}

.sc-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--sc-success);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.sc-hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--sc-text-main);
}

.sc-text-gradient {
    background: linear-gradient(135deg, var(--sc-primary) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sc-hero-desc {
    font-size: 18px;
    color: var(--sc-text-sub);
    margin-bottom: 40px;
    line-height: 1.6;
}

.sc-hero-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
}

.sc-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
    cursor: pointer;
}

.sc-btn-primary {
    background: var(--sc-primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.5);
}

.sc-btn-primary:hover {
    background: var(--sc-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
    color: white;
}

.sc-btn-lg {
    padding: 16px 32px;
}

.sc-btn i {
    font-size: 24px;
}

.sc-btn-text {
    display: flex;
    flex-direction: column;
    align-items: start;
    line-height: 1.2;
}

.sc-btn-text .title {
    font-weight: 700;
    font-size: 16px;
}

.sc-btn-text .subtitle {
    font-size: 12px;
    opacity: 0.9;
    font-weight: 400;
}

.sc-btn.disabled {
    background: var(--sc-secondary);
    cursor: not-allowed;
    box-shadow: none;
}

.sc-hero-meta {
    margin-top: 16px;
    font-size: 13px;
    color: var(--sc-text-sub);
}

.sc-secondary-downloads {
    margin-top: 32px;
    font-size: 14px;
    color: var(--sc-text-sub);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

.sc-secondary-downloads a {
    color: var(--sc-primary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px dashed transparent;
}

.sc-secondary-downloads a:hover {
    border-bottom-color: var(--sc-primary);
}

/* Window Frame */
.sc-window-frame {
    background: #1e293b;
    border-radius: 12px;
    box-shadow: var(--sc-shadow-lg);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.5s ease;
}

.sc-window-frame:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.sc-window-header {
    background: #0f172a;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #334155;
}

.sc-window-dots {
    display: flex;
    gap: 6px;
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.red { background: #ef4444; }
.yellow { background: #fbbf24; }
.green { background: #22c55e; }

.sc-window-title {
    flex: 1;
    text-align: center;
    color: #94a3b8;
    font-size: 12px;
    font-family: monospace;
}

/* Features */
.sc-features {
    padding: 80px 0;
    background: #ffffff;
}

.sc-section-header {
    text-align: center;
    margin-bottom: 60px;
}

.sc-section-header h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--sc-text-main);
}

.sc-section-header p {
    color: var(--sc-text-sub);
    font-size: 18px;
}

.sc-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.sc-feature-card {
    background: var(--sc-bg);
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.sc-feature-card:hover {
    transform: translateY(-5px);
    background: white;
    border-color: var(--sc-border);
    box-shadow: var(--sc-shadow);
}

.sc-feature-icon {
    width: 48px;
    height: 48px;
    background: #eff6ff;
    color: var(--sc-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.sc-feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--sc-text-main);
}

.sc-feature-card p {
    color: var(--sc-text-sub);
    font-size: 15px;
    line-height: 1.6;
}

/* Changelog / Version History */
.sc-changelog {
    padding: 80px 0;
}

.sc-changelog-card {
    background: white;
    border-radius: 24px;
    padding: 48px;
    box-shadow: var(--sc-shadow);
    border: 1px solid var(--sc-border);
}

.sc-changelog-card h3 {
    font-size: 24px;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--sc-border);
}

.sc-timeline {
    position: relative;
    padding-left: 20px;
}

.sc-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
}

.sc-timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.sc-timeline-item:last-child {
    padding-bottom: 0;
}

.sc-timeline-marker {
    position: absolute;
    left: -17px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--sc-primary);
    z-index: 1;
}

.sc-timeline-item:first-child .sc-timeline-marker {
    border-color: var(--sc-success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.sc-timeline-content {
    margin-left: 24px;
}

.sc-timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.sc-timeline-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--sc-text-main);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sc-version-tag {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
}

.sc-version-tag.latest {
    background: #dcfce7;
    color: #166534;
}

.sc-version-date {
    font-size: 14px;
    font-weight: 400;
    color: var(--sc-text-sub);
}

.sc-timeline-download {
    font-size: 13px;
    color: var(--sc-primary);
    text-decoration: none;
    background: #eff6ff;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.sc-timeline-download:hover {
    background: #dbeafe;
}

.sc-timeline-body {
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
}

.sc-change-group {
    margin-bottom: 20px;
}

.sc-change-group:last-child {
    margin-bottom: 0;
}

.sc-change-group h4 {
    font-size: 14px;
    color: var(--sc-text-main);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sc-change-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sc-change-group li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 6px;
    color: var(--sc-text-sub);
    font-size: 14px;
}

.sc-change-group li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #cbd5e1;
}

.sc-version-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.sc-gallery-item {
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--sc-border);
    transition: all 0.2s;
    height: 80px;
}

.sc-gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.sc-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Carousel */
.sc-carousel-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    background: #000;
}

.ptg-carousel-wrapper {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
}

.ptg-slide {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0; transition: opacity 0.5s ease-in-out;
}
.ptg-slide.active { opacity: 1; z-index: 1; }
.ptg-slide img { width: 100%; height: 100%; object-fit: contain; cursor: pointer; }

.ptg-no-image {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    color: #475569; gap: 12px;
}
.ptg-no-image i { font-size: 48px; }

.ptg-carousel-dots {
    position: absolute; bottom: 16px; left: 0; right: 0;
    display: flex; justify-content: center; gap: 8px; z-index: 2;
}
.ptg-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,0.5); cursor: pointer;
    transition: all 0.2s;
}
.ptg-dot.active { background: white; transform: scale(1.2); }

/* Modal */
.ptg-modal {
    display: none; position: fixed; z-index: 9999;
    left: 0; top: 0; width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.9);
    backdrop-filter: blur(5px);
}
.ptg-modal.show { display: flex; justify-content: center; align-items: center; }
.ptg-modal-body { position: relative; max-width: 90%; max-height: 90vh; }
.ptg-modal-body img { 
    max-width: 100%; max-height: 90vh; 
    border-radius: 8px; box-shadow: 0 0 20px rgba(0,0,0,0.5); 
    transition: transform 0.3s ease;
    cursor: zoom-in;
}
.ptg-close-btn {
    position: absolute; top: -40px; right: -40px;
    background: none; border: none; color: white; font-size: 30px; cursor: pointer;
    opacity: 0.8; transition: opacity 0.2s;
}
.ptg-close-btn:hover { opacity: 1; }
.ptg-nav-btn {
    position: absolute; top: 50%; transform: translateY(-50%);
    background: rgba(255,255,255,0.1); border: none; color: white;
    width: 48px; height: 48px; border-radius: 50%; cursor: pointer;
    transition: background 0.2s;
}
.ptg-nav-btn:hover { background: rgba(255,255,255,0.2); }
.ptg-prev { left: -60px; }
.ptg-next { right: -60px; }
.ptg-image-counter { text-align: center; color: white; margin-top: 16px; font-variant-numeric: tabular-nums; }

[data-bs-theme="dark"] .sc-landing-page,
body.dark-open .sc-landing-page,
.sc-landing-page[data-theme="dark"] {
    --sc-text-main: #e2e8f0;
    --sc-text-sub: #94a3b8;
    --sc-bg: #0b1220;
    --sc-card-bg: #0f172a;
    --sc-border: #1f2a44;
    --sc-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.35), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --sc-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

[data-bs-theme="dark"] .sc-landing-page .sc-navbar,
body.dark-open .sc-landing-page .sc-navbar,
.sc-landing-page[data-theme="dark"] .sc-navbar {
    background: rgba(10, 14, 24, 0.85);
    border-bottom-color: var(--sc-border);
}

[data-bs-theme="dark"] .sc-landing-page .sc-version-pill,
body.dark-open .sc-landing-page .sc-version-pill,
.sc-landing-page[data-theme="dark"] .sc-version-pill {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

[data-bs-theme="dark"] .sc-landing-page .sc-hero-badge,
body.dark-open .sc-landing-page .sc-hero-badge,
.sc-landing-page[data-theme="dark"] .sc-hero-badge {
    background: #0f172a;
    color: var(--sc-text-sub);
    box-shadow: 0 2px 6px rgba(0,0,0,0.35);
}

[data-bs-theme="dark"] .sc-landing-page .sc-features,
body.dark-open .sc-landing-page .sc-features,
.sc-landing-page[data-theme="dark"] .sc-features {
    background: #0f172a;
}

[data-bs-theme="dark"] .sc-landing-page .sc-feature-card,
body.dark-open .sc-landing-page .sc-feature-card,
.sc-landing-page[data-theme="dark"] .sc-feature-card {
    background: #111827;
    border-color: var(--sc-border);
}

[data-bs-theme="dark"] .sc-landing-page .sc-feature-card:hover,
body.dark-open .sc-landing-page .sc-feature-card:hover,
.sc-landing-page[data-theme="dark"] .sc-feature-card:hover {
    background: #0f172a;
    border-color: var(--sc-border);
}

[data-bs-theme="dark"] .sc-landing-page .sc-changelog-card,
body.dark-open .sc-landing-page .sc-changelog-card,
.sc-landing-page[data-theme="dark"] .sc-changelog-card {
    background: #0f172a;
    border-color: var(--sc-border);
}

[data-bs-theme="dark"] .sc-landing-page .sc-timeline::before,
body.dark-open .sc-landing-page .sc-timeline::before,
.sc-landing-page[data-theme="dark"] .sc-timeline::before {
    background: var(--sc-border);
}

[data-bs-theme="dark"] .sc-landing-page .sc-timeline-marker,
body.dark-open .sc-landing-page .sc-timeline-marker,
.sc-landing-page[data-theme="dark"] .sc-timeline-marker {
    background: #0f172a;
}

[data-bs-theme="dark"] .sc-landing-page .sc-version-tag.latest,
body.dark-open .sc-landing-page .sc-version-tag.latest,
.sc-landing-page[data-theme="dark"] .sc-version-tag.latest {
    background: #064e3b;
    color: #a7f3d0;
}

[data-bs-theme="dark"] .sc-landing-page .sc-timeline-download,
body.dark-open .sc-landing-page .sc-timeline-download,
.sc-landing-page[data-theme="dark"] .sc-timeline-download {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

[data-bs-theme="dark"] .sc-landing-page .sc-timeline-body,
body.dark-open .sc-landing-page .sc-timeline-body,
.sc-landing-page[data-theme="dark"] .sc-timeline-body {
    background: #111827;
}

[data-bs-theme="dark"] .sc-landing-page .sc-window-title,
body.dark-open .sc-landing-page .sc-window-title,
.sc-landing-page[data-theme="dark"] .sc-window-title {
    color: #cbd5e1;
}

[data-bs-theme="dark"] .sc-landing-page .sc-carousel-container,
body.dark-open .sc-landing-page .sc-carousel-container,
.sc-landing-page[data-theme="dark"] .sc-carousel-container {
    background: #0b1220;
}

[data-bs-theme="dark"] .sc-landing-page .ptg-no-image,
body.dark-open .sc-landing-page .ptg-no-image,
.sc-landing-page[data-theme="dark"] .ptg-no-image {
    color: #94a3b8;
}

[data-bs-theme="dark"] .sc-landing-page .ptg-dot,
body.dark-open .sc-landing-page .ptg-dot,
.sc-landing-page[data-theme="dark"] .ptg-dot {
    background: rgba(255,255,255,0.35);
}

[data-bs-theme="dark"] .sc-landing-page .ptg-dot.active,
body.dark-open .sc-landing-page .ptg-dot.active,
.sc-landing-page[data-theme="dark"] .ptg-dot.active {
    background: #e2e8f0;
}

/* Responsive */
@media (max-width: 992px) {
    .sc-hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
    .sc-hero-content { margin: 0 auto; }
    .sc-hero-actions { justify-content: center; flex-direction: column; align-items: center; }
    .sc-secondary-downloads { justify-content: center; }
    .sc-hero-title { font-size: 36px; }
    .sc-window-frame { transform: none; margin-top: 20px; }
    .sc-window-frame:hover { transform: none; }
}

@media (max-width: 600px) {
    .sc-hero-title { font-size: 32px; }
    .sc-btn-lg { width: 100%; justify-content: center; }
    .sc-navbar .sc-container { flex-direction: column; gap: 12px; }
    
    .sc-timeline-marker { left: -14px; width: 12px; height: 12px; }
    .sc-timeline::before { left: 6px; }
    .sc-timeline-content { margin-left: 16px; }
    .sc-timeline-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    .sc-changelog-card { padding: 24px; }
}