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

:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a26;
    --border: #1e1e2e;
    --text: #e4e4e7;
    --text-muted: #8b8b9e;
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --accent: #00d2ff;
    --gradient: linear-gradient(135deg, #6c5ce7 0%, #00d2ff 100%);
    --gradient-text: linear-gradient(135deg, #a29bfe 0%, #00d2ff 50%, #6c5ce7 100%);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(0,0,0,.4);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
code {
    background: rgba(108,92,231,.15);
    color: var(--primary-light);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: .9em;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

/* ── Buttons ──────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: .95rem;
    transition: all .3s ease;
    border: none;
    cursor: pointer;
}
.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(108,92,231,.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(108,92,231,.5);
}
.btn-secondary {
    background: rgba(255,255,255,.06);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    background: rgba(255,255,255,.1);
    border-color: var(--primary);
}
.btn-nav {
    background: rgba(108,92,231,.15);
    color: var(--primary-light);
    padding: 8px 20px;
    font-size: .85rem;
}
.btn-nav:hover { background: rgba(108,92,231,.25); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* ── Header ───────────────────────────────────────────────────────── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: background .3s, backdrop-filter .3s;
}
.header.scrolled {
    background: rgba(10,10,15,.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
}
.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: #fff;
}
.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}
.nav-links a {
    color: var(--text-muted);
    font-size: .9rem;
    font-weight: 500;
    transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.burger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all .3s;
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: .35;
}
.hero-glow--1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -150px;
    animation: float 8s ease-in-out infinite;
}
.hero-glow--2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}
.hero-avatar {
    width: 180px;
    height: 180px;
    border-radius: 40px;
    margin: 0 auto 28px;
    animation: fadeInUp .5s ease;
    box-shadow: 0 12px 40px rgba(108,92,231,.3);
}
.hero-badge {
    display: inline-block;
    background: rgba(108,92,231,.15);
    border: 1px solid rgba(108,92,231,.3);
    color: var(--primary-light);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .5px;
    margin-bottom: 24px;
    animation: fadeInUp .6s ease;
}
.hero-title {
    font-size: clamp(2.2rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -.02em;
    margin-bottom: 20px;
    animation: fadeInUp .6s ease .1s both;
}
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 32px;
    animation: fadeInUp .6s ease .2s both;
}
.hero-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp .6s ease .3s both;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 56px;
    animation: fadeInUp .6s ease .4s both;
}
.stat {
    display: flex;
    align-items: center;
    gap: 12px;
}
.stat-icon { font-size: 1.6rem; }
.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    display: block;
}
.stat-label {
    font-size: .75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Section common ───────────────────────────────────────────────── */
section { padding: 100px 0; }
.section-header {
    text-align: center;
    margin-bottom: 56px;
}
.section-tag {
    display: inline-block;
    background: rgba(108,92,231,.1);
    border: 1px solid rgba(108,92,231,.2);
    color: var(--primary-light);
    padding: 4px 14px;
    border-radius: 50px;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.section-title {
    font-size: clamp(1.6rem, 4vw, 2.6rem);
    font-weight: 800;
    line-height: 1.2;
}

/* ── Features ─────────────────────────────────────────────────────── */
.features { background: linear-gradient(180deg, var(--bg) 0%, #0d0d14 100%); }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all .3s ease;
}
.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(108,92,231,.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(108,92,231,.1);
}
.feature-card--accent {
    background: linear-gradient(135deg, rgba(108,92,231,.12) 0%, rgba(0,210,255,.06) 100%);
    border-color: rgba(108,92,231,.25);
}
.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.feature-card p {
    color: var(--text-muted);
    font-size: .9rem;
    line-height: 1.6;
}

/* ── How it works ─────────────────────────────────────────────────── */
.how { background: var(--bg); }
.instruction-wrap {
    text-align: center;
    margin-bottom: 48px;
}
.instruction-img {
    max-width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0,0,0,.4);
}
.steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 640px;
    margin: 0 auto;
    position: relative;
}
.steps::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 20px;
    bottom: 20px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    opacity: .3;
}
.step {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    padding: 28px 0;
    position: relative;
}
.step-num {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--primary-light);
    position: relative;
    z-index: 1;
}
.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.step-content p {
    color: var(--text-muted);
    font-size: .95rem;
}

/* ── Commands ─────────────────────────────────────────────────────── */
.commands {
    background: linear-gradient(180deg, var(--bg) 0%, #0d0d14 100%);
}
.commands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    max-width: 860px;
    margin: 0 auto;
}
.cmd {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    transition: all .2s;
}
.cmd:hover {
    border-color: rgba(108,92,231,.3);
    background: var(--bg-card-hover);
}
.cmd code {
    font-weight: 600;
    white-space: nowrap;
}
.cmd span {
    color: var(--text-muted);
    font-size: .85rem;
}

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq { background: var(--bg); }
.faq-list {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color .2s;
}
.faq-item:hover,
.faq-item[open] { border-color: rgba(108,92,231,.3); }

.faq-item summary {
    padding: 18px 24px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--primary-light);
    transition: transform .3s;
}
.faq-item[open] summary::after {
    transform: rotate(45deg);
}
.faq-item p {
    padding: 0 24px 18px;
    color: var(--text-muted);
    font-size: .9rem;
    line-height: 1.7;
}

/* ── Section desc ─────────────────────────────────────────────────── */
.section-desc {
    color: var(--text-muted);
    max-width: 560px;
    margin: 12px auto 0;
    font-size: .95rem;
    line-height: 1.6;
}

/* ── Database ─────────────────────────────────────────────────────── */
.database { background: linear-gradient(180deg, #0d0d14 0%, var(--bg) 100%); }
.db-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}
.db-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color .3s;
}
.db-card:hover { border-color: rgba(108,92,231,.3); }
.db-card--wide { grid-column: 1 / -1; }
.db-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.db-icon { font-size: 1.6rem; }
.db-card-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-light);
    font-family: 'SF Mono', 'Fira Code', monospace;
}
.db-badge {
    background: rgba(108,92,231,.12);
    color: var(--text-muted);
    padding: 3px 10px;
    border-radius: 50px;
    font-size: .72rem;
    font-weight: 500;
}
.db-fields {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}
.db-field {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .85rem;
    color: var(--text-muted);
    padding: 4px 0;
}
.db-key {
    background: rgba(108,92,231,.2);
    color: var(--primary-light);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: .7rem;
    font-weight: 600;
    font-family: monospace;
}
.db-dot {
    width: 6px;
    height: 6px;
    background: var(--border);
    border-radius: 50%;
    flex-shrink: 0;
}
.db-type {
    margin-left: auto;
    color: var(--accent);
    font-size: .75rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    opacity: .7;
}
.db-desc {
    color: var(--text-muted);
    font-size: .85rem;
    line-height: 1.5;
    border-top: 1px solid var(--border);
    padding-top: 12px;
}
.db-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.db-flow-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    font-size: .9rem;
    font-weight: 500;
}
.db-flow-icon { font-size: 1.2rem; }
.db-flow-arrow {
    color: var(--primary-light);
    font-size: 1.4rem;
    font-weight: 700;
}

/* ── Media types ──────────────────────────────────────────────────── */
.media-types { background: linear-gradient(180deg, var(--bg) 0%, #0d0d14 100%); }
.media-grid {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    max-width: 700px;
    margin: 0 auto;
}
.media-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    min-width: 100px;
    transition: all .3s;
}
.media-item:hover {
    border-color: rgba(108,92,231,.3);
    transform: translateY(-3px);
}
.media-icon { font-size: 2rem; }
.media-label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* ── Security ─────────────────────────────────────────────────────── */
.security { background: var(--bg); }
.security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.security-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all .3s;
}
.security-card:hover {
    border-color: rgba(0,210,255,.3);
    transform: translateY(-3px);
}
.security-icon {
    font-size: 2rem;
    margin-bottom: 14px;
}
.security-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.security-card p {
    color: var(--text-muted);
    font-size: .9rem;
    line-height: 1.6;
}

/* ── Tech ─────────────────────────────────────────────────────────── */
.tech { background: linear-gradient(180deg, #0d0d14 0%, var(--bg) 100%); }
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 700px;
    margin: 0 auto;
}
.tech-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
    transition: border-color .3s;
}
.tech-item:hover { border-color: rgba(108,92,231,.3); }
.tech-name {
    font-weight: 700;
    font-size: .95rem;
    margin-bottom: 4px;
}
.tech-desc {
    color: var(--text-muted);
    font-size: .78rem;
}

/* ── CTA ──────────────────────────────────────────────────────────── */
.cta { padding: 60px 0 100px; }
.cta-card {
    background: linear-gradient(135deg, rgba(108,92,231,.15) 0%, rgba(0,210,255,.08) 100%);
    border: 1px solid rgba(108,92,231,.25);
    border-radius: 24px;
    padding: 64px 40px;
    text-align: center;
}
.cta-card h2 {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 12px;
}
.cta-card p {
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto 28px;
    font-size: 1rem;
}
.cta-buttons { margin-bottom: 24px; }
.cta-features {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    font-size: .85rem;
    color: var(--text-muted);
}

/* ── Footer ───────────────────────────────────────────────────────── */
.footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
}
.footer-logo .logo-icon {
    width: 28px;
    height: 28px;
    font-size: .85rem;
    border-radius: 8px;
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    color: var(--text-muted);
    font-size: .85rem;
    transition: color .2s;
}
.footer-links a:hover { color: var(--text); }
.footer-copy {
    color: var(--text-muted);
    font-size: .8rem;
}

/* ── Mobile ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .nav-links, .btn-nav { display: none; }
    .burger { display: flex; }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10,10,15,.95);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero-stats { gap: 20px; flex-wrap: wrap; }
    .stat { gap: 8px; }
    .stat-value { font-size: 1.1rem; }

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

    .db-grid { grid-template-columns: 1fr; }
    .db-card--wide { grid-column: auto; }
    .db-flow { gap: 10px; }
    .db-flow-arrow { font-size: 1rem; }

    .security-grid { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }

    .steps::before { left: 28px; }
    .step { gap: 20px; }
    .step-num { width: 56px; height: 56px; font-size: 1rem; }

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

    section { padding: 64px 0; }

    .cta-card { padding: 40px 24px; }

    .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
    .footer-links { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
    .footer-links a { color: var(--text-muted); font-size: .85rem; transition: color .2s; }
    .footer-links a:hover { color: var(--text); }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .hero-stats { flex-direction: column; align-items: center; }
    .commands-grid { grid-template-columns: 1fr; }
}

/* ── Scroll animations ────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}