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

:root {
    --primary: #212121;
    --primary-light: #2d2d2d;
    --accent: #00B0FF;
    --accent-glow: rgba(0, 176, 255, 0.15);
    --text: #FFFFFF;
    --text-dim: #AAAAAA;
    --surface: #1a1a1a;
    --surface-hover: #2a2a2a;
    --border: rgba(255, 255, 255, 0.08);
    --radius: 16px;
    --max-width: 1100px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--surface);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.2s;
}
a:hover {
    opacity: 0.8;
}

/* ===== Header / Nav ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(26, 26, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.8rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
}

.nav-brand img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--text);
    opacity: 1;
}

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

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(0, 176, 255, 0.08) 0%, transparent 60%),
        var(--surface);
}

.hero-content {
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    background: var(--accent-glow);
    border: 1px solid rgba(0, 176, 255, 0.2);
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.stars {
    color: #FFD700;
    letter-spacing: 1px;
}

.final-star {
    background: linear-gradient(90deg, #FFD700 60%, #555 60%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.hero h1 .accent {
    background: linear-gradient(135deg, var(--accent), #40C4FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-dim);
    max-width: 540px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}
.btn:hover {
    transform: translateY(-2px);
    opacity: 1;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 176, 255, 0.25);
}
.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(0, 176, 255, 0.35);
}

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

.btn img.play-icon {
    height: 20px;
}

/* ===== Section Base ===== */
.section {
    padding: 5rem 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-dim);
    font-size: 1.05rem;
}

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.2rem;
}

.feature-card {
    background: var(--primary);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 1.8rem;
    transition: border-color 0.3s, transform 0.2s;
}
.feature-card:hover {
    border-color: rgba(0, 176, 255, 0.3);
    border-left-color: var(--accent);
    transform: translateY(-3px);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===== Comparison Table ===== */
.comparison-section {
    padding: 5rem 1.5rem;
}

.comparison-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: var(--primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 0.85rem 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.comparison-table thead th {
    background: var(--primary-light);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text);
}

.comparison-table thead th:not(:first-child) {
    text-align: center;
    width: 90px;
}

.comparison-table td:not(:first-child) {
    text-align: center;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background: var(--surface-hover);
}

.check {
    color: var(--accent);
    font-weight: 700;
}

.cross {
    color: #666;
}

/* ===== CTA ===== */
.cta {
    text-align: center;
    padding: 4rem 1.5rem 5rem;
}

.cta h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.cta p {
    color: var(--text-dim);
    margin-bottom: 1.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: 2rem 1.5rem;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-left {
    color: var(--text-dim);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.footer-links a {
    color: var(--text-dim);
    font-size: 0.85rem;
}
.footer-links a:hover {
    color: var(--text);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 5rem 1.2rem 3rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .comparison-table th,
    .comparison-table td {
        padding: 0.7rem 0.8rem;
        font-size: 0.85rem;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}