/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: #1c2128;
    --border: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #00bcd4;
    --accent-hover: #00acc1;
    --accent-subtle: rgba(0, 188, 212, 0.15);
    --success: #3fb950;
    --danger: #f85149;
    --warning: #d29922;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --transition: 0.2s ease;
    --container-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

main {
    flex: 1;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

img {
    max-width: 100%;
    height: auto;
}

/* === Container === */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navbar === */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-logo:hover {
    color: var(--text-primary);
}

.nav-logo img {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--border);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.925rem;
    font-weight: 500;
    transition: color var(--transition);
}

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

.nav-links a.btn-primary {
    color: #fff;
}

.nav-links a.btn-primary:hover {
    color: #fff;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* === Hero === */
.hero {
    text-align: center;
    padding: 100px 0 80px;
    background: radial-gradient(ellipse at 50% 0%, rgba(0, 188, 212, 0.08) 0%, transparent 60%);
}

.hero-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 3px solid var(--border);
    margin-bottom: 24px;
    box-shadow: 0 0 30px rgba(0, 188, 212, 0.15);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.hero h1 .accent {
    color: var(--accent);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.platforms {
    margin-top: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.platforms-label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.platforms-icons {
    display: flex;
    gap: 20px;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.platform-item svg {
    opacity: 0.7;
}

/* === Screenshot Section === */
.screenshot-section {
    padding: 40px 0 80px;
    text-align: center;
}

/* === Carousel === */
.carousel {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
}

.carousel-track-wrapper {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    background: var(--bg-secondary);
}

.carousel-track {
    display: flex;
    transition: transform 0.4s ease;
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.carousel-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}

.carousel-prev {
    left: -20px;
}

.carousel-next {
    right: -20px;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: var(--text-muted);
    opacity: 0.4;
    cursor: pointer;
    padding: 0;
    transition: opacity var(--transition), background var(--transition);
}

.carousel-dot.active {
    opacity: 1;
    background: var(--accent);
}

/* === Section Styles === */
.section {
    padding: 80px 0;
}

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

.section-title h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* === Features Grid === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.7;
}

/* === Testimonials === */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.testimonial-card blockquote {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.testimonial-author {
    font-weight: 600;
    font-size: 0.925rem;
}

.testimonial-role {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* === Pricing === */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.pricing-card.featured {
    border-color: var(--accent);
    position: relative;
    box-shadow: 0 0 30px rgba(0, 188, 212, 0.1);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #000;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 16px 0;
}

.pricing-price .period {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.pricing-price .currency {
    font-size: 1.5rem;
    vertical-align: super;
}

.pricing-features {
    list-style: none;
    margin: 24px 0;
    flex: 1;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.925rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li::before {
    content: "\2713";
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-features li.disabled {
    color: var(--text-muted);
    text-decoration: line-through;
}

.pricing-features li.disabled::before {
    content: "\2717";
    color: var(--text-muted);
}

/* === Comparison Table === */
.comparison-table {
    max-width: 800px;
    margin: 60px auto 0;
    border-collapse: collapse;
    width: 100%;
}

.comparison-table th,
.comparison-table td {
    padding: 14px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table td {
    font-size: 0.925rem;
}

.comparison-table td:nth-child(2),
.comparison-table td:nth-child(3),
.comparison-table th:nth-child(2),
.comparison-table th:nth-child(3) {
    text-align: center;
    width: 120px;
}

.check {
    color: var(--success);
}

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

/* === Forms === */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* === Legal Pages === */
.legal-page {
    max-width: 800px;
    margin: 60px auto;
    padding: 0 24px;
}

.legal-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.legal-page .legal-updated {
    color: var(--text-secondary);
    font-size: 0.925rem;
    margin-bottom: 40px;
}

.legal-page h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 16px;
}

.legal-page h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
}

.legal-page p,
.legal-page li {
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 12px;
}

.legal-page ul,
.legal-page ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.legal-page a {
    color: var(--accent);
}

.legal-page a:hover {
    text-decoration: underline;
}

/* === Page Cards === */
.page-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    max-width: 500px;
    margin: 60px auto;
}

.page-card h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.page-card .subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* === Success Page === */
.success-page {
    text-align: center;
    padding: 80px 0;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 24px;
    display: block;
}

.license-display {
    background: var(--bg-tertiary);
    border: 2px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 32px auto;
    max-width: 480px;
    position: relative;
}

.license-key {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--accent);
    word-break: break-all;
    user-select: all;
}

.copy-btn {
    margin-top: 16px;
    background: var(--accent-subtle);
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 8px 20px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    transition: all var(--transition);
}

.copy-btn:hover {
    background: var(--accent);
    color: #000;
}

.instructions {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin: 32px auto;
    max-width: 480px;
    text-align: left;
}

.instructions h3 {
    margin-bottom: 12px;
    font-size: 1rem;
}

.instructions ol {
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.925rem;
}

.instructions li {
    margin-bottom: 8px;
}

/* === Account Page === */
.account-info {
    margin-top: 24px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-value {
    font-weight: 600;
    font-size: 0.95rem;
}

.info-note {
    color: var(--text-muted);
    font-size: 0.825rem;
    margin-top: 8px;
    padding: 0 0 14px;
    border-bottom: 1px solid var(--border);
    line-height: 1.5;
}

.status-active {
    color: var(--success);
}

.status-expired {
    color: var(--danger);
}

.status-cancelled {
    color: var(--warning);
}

/* === Alert === */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-size: 0.925rem;
}

.alert-error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid rgba(248, 81, 73, 0.3);
    color: var(--danger);
}

.alert-success {
    background: rgba(63, 185, 80, 0.1);
    border: 1px solid rgba(63, 185, 80, 0.3);
    color: var(--success);
}

/* === Footer === */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 0.925rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.825rem;
}

/* === CTA Section === */
.cta-section {
    text-align: center;
    padding: 80px 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(0, 188, 212, 0.06) 0%, transparent 60%);
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

/* === Responsive === */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.25rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .page-card {
        margin: 40px 16px;
        padding: 32px 24px;
    }

    .comparison-table {
        font-size: 0.85rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

    .license-key {
        font-size: 1.1rem;
    }
}

/* === Language Selector === */
.lang-selector {
    position: relative;
}

.lang-selector-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    font-family: inherit;
    padding: 6px 12px;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.03em;
}

.lang-selector-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.lang-selector-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    max-height: 320px;
    overflow-y: auto;
    z-index: 200;
    padding: 4px 0;
}

.lang-selector.open .lang-selector-dropdown {
    display: block;
}

.lang-option {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition);
    text-decoration: none;
}

.lang-option:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.lang-option.active {
    color: var(--accent);
}

@media (max-width: 768px) {
    .lang-selector {
        width: 100%;
    }

    .lang-selector-btn {
        width: 100%;
        justify-content: center;
    }

    .lang-selector-dropdown {
        position: static;
        box-shadow: none;
        border: 1px solid var(--border);
        margin-top: 4px;
        max-height: 200px;
    }

}