/* NaTix OS — Light Theme
   Brand colors from OS UI:
   Cyan:   #22afd4
   Purple: #9734c6
   Amber:  #e2a672
*/

:root {
    --bg-1: #ffffff;
    --bg-2: #f7f8fa;
    --glass: rgba(255,255,255,0.7);
    --glass-border: rgba(0,0,0,0.08);
    --card: #ffffff;
    --card-hover: #fafbfc;
    --cyan: #22afd4;
    --purple: #9734c6;
    --amber: #e2a672;
    --accent: #22afd4;
    --muted: #6b7280;
    --text-primary: #111827;
    --text-secondary: #374151;
    --radius: 16px;
    --fw-medium: 600;
    --container: 1100px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
    margin: 0;
    font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-1);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ---- Layout ---- */
.wrap {
    max-width: var(--container);
    margin: 0 auto;
    padding: 48px 20px;
}

/* ---- Animated orbs ---- */
.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.15;
}
.orb-1 { width: 500px; height: 500px; top: -120px; left: -100px; background: var(--cyan); animation: drift 12s ease-in-out infinite; }
.orb-2 { width: 400px; height: 400px; bottom: -80px; right: -60px; background: var(--purple); animation: drift 15s ease-in-out infinite reverse; }
.orb-3 { width: 300px; height: 300px; top: 50%; left: 50%; background: var(--amber); animation: drift 18s ease-in-out infinite 3s; }

@keyframes drift {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(40px, -30px); }
    66% { transform: translate(-30px, 25px); }
}

/* ---- Header / Nav ---- */
header {
    position: sticky;
    top: 12px;
    z-index: 50;
    backdrop-filter: blur(20px) saturate(180%);
    background: rgba(255,255,255,0.8);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 10px 20px;
    margin: 12px 20px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

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

.brand { display: flex; align-items: center; gap: 12px; }

.logo {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    font-weight: 800; font-size: 18px; color: #fff;
    box-shadow: 0 4px 16px rgba(34,175,212,0.3);
    position: relative;
}
.logo::after {
    content: '';
    position: absolute; inset: -3px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--cyan), var(--purple), var(--amber));
    z-index: -1; opacity: 0.2; filter: blur(10px);
}

.brand h1 { font-size: 16px; margin: 0; letter-spacing: -0.3px; color: var(--text-primary); }
.brand p { margin: 0; font-size: 11px; color: var(--muted); letter-spacing: 0.5px; text-transform: uppercase; }

nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 6px; align-items: center; }
nav a {
    color: var(--muted); text-decoration: none; font-weight: 500; font-size: 14px;
    padding: 8px 14px; border-radius: 10px; transition: all 0.2s;
}
nav a:hover { color: var(--text-primary); background: rgba(0,0,0,0.04); }

.cta { display: flex; gap: 8px; align-items: center; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 22px; border-radius: 12px; border: none; cursor: pointer;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    color: #fff; font-weight: 700; font-size: 14px; text-decoration: none;
    box-shadow: 0 4px 16px rgba(34,175,212,0.25);
    transition: all 0.25s;
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(34,175,212,0.35);
    filter: brightness(1.05);
}

.btn-alt {
    display: inline-flex; align-items: center;
    padding: 10px 18px; border-radius: 12px; cursor: pointer;
    border: 1px solid var(--glass-border); background: #fff;
    color: var(--text-secondary); font-weight: 600; font-size: 14px; text-decoration: none;
    transition: all 0.25s;
}
.btn-alt:hover {
    background: var(--bg-2); color: var(--text-primary);
    border-color: rgba(34,175,212,0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

/* ---- Hero ---- */
.hero {
    position: relative;
    display: grid; grid-template-columns: 1fr 400px; gap: 48px; align-items: center;
    padding: 72px 48px;
    border-radius: 24px;
    margin: 20px auto;
    max-width: calc(var(--container) + 40px);
    background:
        radial-gradient(ellipse 600px 400px at 20% 80%, rgba(34,175,212,0.08), transparent),
        radial-gradient(ellipse 500px 350px at 80% 20%, rgba(151,52,198,0.06), transparent),
        radial-gradient(ellipse 400px 250px at 60% 60%, rgba(226,166,114,0.05), transparent),
        linear-gradient(160deg, #f8fafc, #ffffff);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 40px rgba(0,0,0,0.06);
    overflow: hidden;
    z-index: 1;
}

.hero-left { max-width: 640px; }

.eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 999px;
    background: rgba(34,175,212,0.08);
    border: 1px solid rgba(34,175,212,0.2);
    font-weight: 600; font-size: 13px; color: var(--cyan);
}
.eyebrow::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
    background: var(--cyan); box-shadow: 0 0 8px var(--cyan);
}

h2 { font-size: 42px; line-height: 1.08; margin: 20px 0 14px; letter-spacing: -0.5px; color: var(--text-primary); }

.gradient-text {
    background: linear-gradient(135deg, var(--cyan), var(--purple), var(--amber));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

p.lead { color: var(--muted); font-size: 16px; line-height: 1.6; margin: 0 0 24px; }

.hero-actions { display: flex; gap: 12px; align-items: center; }

.kbd {
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-2); border: 1px solid var(--glass-border);
    padding: 5px 10px; border-radius: 8px; font-size: 12px; color: var(--muted);
}

/* ---- Download card ---- */
.download-card {
    background: #fff;
    border: 1px solid var(--glass-border);
    padding: 28px; border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.06);
    position: relative;
}
.download-card::before {
    content: ''; position: absolute; top: 0; left: 24px; right: 24px; height: 3px;
    background: linear-gradient(90deg, var(--cyan), var(--purple), var(--amber));
    border-radius: 2px;
}
.download-card h3 { margin: 0 0 8px; color: var(--text-primary); }

.stats { display: flex; gap: 10px; margin-top: 14px; }
.stat {
    flex: 1; text-align: center;
    background: var(--bg-2); border: 1px solid var(--glass-border);
    padding: 12px 10px; border-radius: 12px;
}
.stat .num { font-weight: 700; font-size: 15px; color: var(--text-primary); }
.stat .label { font-size: 11px; color: var(--muted); margin-top: 2px; }

/* ---- Section titles ---- */
.section-title { font-size: 28px; margin: 0 0 6px; color: var(--text-primary); }
.section-sub { color: var(--muted); margin: 0 0 28px; font-size: 15px; }

/* ---- Features section ---- */
.features-header { text-align: center; margin-bottom: 48px; }
.features-header .section-sub { margin-bottom: 0; }

/* Highlight feature (hero card) */
.feature-highlight {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0;
    border-radius: 20px; overflow: hidden;
    border: 1px solid var(--glass-border);
    background: #fff;
    margin-bottom: 32px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.05);
}
.feature-highlight-visual {
    padding: 32px;
    background:
        radial-gradient(ellipse at 30% 70%, rgba(34,175,212,0.06), transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(151,52,198,0.04), transparent 50%),
        var(--bg-2);
    display: flex; align-items: center; justify-content: center;
}
.feature-highlight-text {
    padding: 40px;
    display: flex; flex-direction: column; justify-content: center;
}
.fh-badge {
    display: inline-block; width: fit-content;
    padding: 4px 12px; border-radius: 6px;
    background: rgba(34,175,212,0.08); border: 1px solid rgba(34,175,212,0.15);
    font-size: 11px; font-weight: 600; color: var(--cyan);
    text-transform: uppercase; letter-spacing: 0.5px;
    margin-bottom: 12px;
}
.feature-highlight-text h3 { margin: 0 0 10px; font-size: 22px; color: var(--text-primary); }
.feature-highlight-text p { color: var(--muted); font-size: 14px; line-height: 1.7; margin: 0 0 16px; }
.fh-list {
    list-style: none; padding: 0; margin: 0;
    display: flex; flex-direction: column; gap: 8px;
}
.fh-list li {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--text-secondary);
}
.fh-list svg { flex-shrink: 0; }

/* UI Preview mock */
.ui-preview {
    width: 100%; max-width: 360px;
    border-radius: 12px; overflow: hidden;
    border: 1px solid rgba(0,0,0,0.1);
    background: #1a1f2e;
    box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}
.ui-titlebar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.ui-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.ui-titlebar-text { font-size: 11px; color: rgba(255,255,255,0.5); font-weight: 500; }
.ui-body {
    display: flex; gap: 0; min-height: 160px;
}
.ui-sidebar-mock {
    width: 48px; padding: 10px 8px;
    background: rgba(255,255,255,0.03);
    border-right: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column; gap: 8px; align-items: center;
}
.ui-sidebar-item {
    width: 32px; height: 32px; border-radius: 8px;
    background: rgba(255,255,255,0.08);
}
.ui-sidebar-item.active {
    background: linear-gradient(135deg, rgba(34,175,212,0.4), rgba(151,52,198,0.3));
    border: 1px solid rgba(34,175,212,0.4);
}
.ui-content-mock {
    flex: 1; padding: 14px;
    display: flex; flex-direction: column; gap: 10px;
}
.ui-block-lg {
    height: 60px; border-radius: 8px;
    background: linear-gradient(135deg, rgba(34,175,212,0.12), rgba(151,52,198,0.08));
    border: 1px solid rgba(255,255,255,0.06);
}
.ui-block-row { display: flex; gap: 8px; }
.ui-block-sm {
    flex: 1; height: 50px; border-radius: 8px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.06);
}
.ui-dock {
    display: flex; justify-content: center; gap: 8px;
    padding: 8px;
    background: rgba(255,255,255,0.04);
    border-top: 1px solid rgba(255,255,255,0.06);
}
.dock-icon {
    width: 28px; height: 28px; border-radius: 8px;
}

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 0; }

.feature {
    padding: 24px; border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--glass-border);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}
.feature:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}
.feature-accent-cyan:hover { border-color: rgba(34,175,212,0.3); box-shadow: 0 12px 32px rgba(34,175,212,0.1); }
.feature-accent-purple:hover { border-color: rgba(151,52,198,0.3); box-shadow: 0 12px 32px rgba(151,52,198,0.1); }
.feature-accent-amber:hover { border-color: rgba(226,166,114,0.3); box-shadow: 0 12px 32px rgba(226,166,114,0.1); }

.feature-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: grid; place-items: center;
    margin-bottom: 14px;
}
.feature-accent-cyan .feature-icon { background: rgba(34,175,212,0.1); }
.feature-accent-purple .feature-icon { background: rgba(151,52,198,0.08); }
.feature-accent-amber .feature-icon { background: rgba(226,166,114,0.1); }

.feature h4 { margin: 0 0 6px; font-size: 15px; color: var(--text-primary); }
.feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

/* Features stats bar */
.features-stats {
    display: flex; align-items: center; justify-content: center; gap: 0;
    margin-top: 36px; padding: 24px 32px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--glass-border);
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.fs-item { text-align: center; flex: 1; }
.fs-num { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }
.fs-label { font-size: 12px; color: var(--muted); margin-top: 2px; }
.fs-divider { width: 1px; height: 40px; background: var(--glass-border); }

/* ---- Screenshots ---- */
.screens {
    display: flex; gap: 16px; overflow-x: auto;
    padding: 8px 4px; scroll-snap-type: x mandatory;
}
.screens::-webkit-scrollbar { height: 6px; }
.screens::-webkit-scrollbar-track { background: transparent; }
.screens::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 3px; }

.shot {
    min-width: 280px; height: 180px; border-radius: 16px;
    display: grid; place-items: center;
    color: rgba(255,255,255,0.8); font-weight: 600; font-size: 13px;
    scroll-snap-align: start;
}

/* ---- Two-column / Cards ---- */
.two-col { display: grid; grid-template-columns: 1fr 360px; gap: 28px; align-items: start; }

.card {
    padding: 28px; border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.card h3 { margin: 0 0 8px; color: var(--text-primary); }
.card a { color: var(--cyan); }

/* ---- CTA Banner ---- */
.cta-banner {
    text-align: center; padding: 64px 24px;
    border-radius: 24px; margin: 48px 20px;
    background:
        radial-gradient(ellipse 500px 300px at 30% 50%, rgba(34,175,212,0.1), transparent),
        radial-gradient(ellipse 400px 250px at 70% 50%, rgba(151,52,198,0.08), transparent),
        linear-gradient(135deg, var(--bg-2), #fff);
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}
.cta-banner h2 { margin: 0 0 12px; font-size: 32px; color: var(--text-primary); }
.cta-banner p { margin: 0 0 28px; font-size: 17px; color: var(--muted); }
.cta-banner .btn {
    font-size: 16px; padding: 14px 32px;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
}

/* ---- Footer ---- */
footer {
    margin-top: 0; padding: 28px 20px;
    background: var(--bg-2);
    border-top: 1px solid var(--glass-border);
    color: var(--muted); font-size: 13px;
}
footer a { color: var(--cyan); }

.footer-grid {
    display: flex; justify-content: space-between; align-items: center;
    max-width: var(--container); margin: 0 auto; gap: 12px;
}

/* ---- Contact Modal ---- */
.modal-overlay {
    position: fixed; inset: 0; display: none; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.3); backdrop-filter: blur(8px); z-index: 80;
}
.modal-box {
    width: 520px; max-width: 94%;
    border-radius: 20px; padding: 28px;
    background: #fff;
    border: 1px solid var(--glass-border);
    box-shadow: 0 24px 64px rgba(0,0,0,0.15);
}
.modal-box h3 { margin: 0 0 6px; color: var(--text-primary); }
.modal-box input, .modal-box textarea {
    width: 100%; padding: 11px 14px; border-radius: 10px;
    border: 1px solid var(--glass-border);
    background: var(--bg-2); color: var(--text-primary);
    font-family: inherit; font-size: 14px;
    transition: border-color 0.2s;
}
.modal-box input:focus, .modal-box textarea:focus {
    outline: none; border-color: rgba(34,175,212,0.5);
    box-shadow: 0 0 0 3px rgba(34,175,212,0.1);
}
.modal-box textarea { height: 100px; resize: vertical; }

/* ---- Mobile drawer ---- */
.mobile-drawer {
    position: fixed; inset: 0; z-index: 60;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    display: flex; flex-direction: column;
    padding: 28px; gap: 16px;
    transform: translateY(-100%); opacity: 0;
    pointer-events: none; transition: all 0.3s ease;
}
.mobile-drawer.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-drawer a { color: var(--text-primary); text-decoration: none; font-size: 18px; font-weight: 600; padding: 12px 0; border-bottom: 1px solid var(--glass-border); }

/* ---- Responsive ---- */
@media (max-width: 980px) {
    .hero { grid-template-columns: 1fr; gap: 32px; padding: 48px 28px; text-align: center; }
    .hero-actions { justify-content: center; }
    .two-col { grid-template-columns: 1fr; }
    .features { grid-template-columns: repeat(2, 1fr); }
    .feature-highlight { grid-template-columns: 1fr; }
    .feature-highlight-visual { padding: 24px; }
    .feature-highlight-text { padding: 28px; }
    .features-stats { flex-wrap: wrap; gap: 16px; }
    .fs-divider { display: none; }
    .fs-item { min-width: 120px; }
    nav ul { display: none; }
    .mobile-toggle { display: inline-flex !important; }
}

@media (max-width: 640px) {
    .features { grid-template-columns: 1fr; }
    h2 { font-size: 28px; }
    .hero { padding: 36px 20px; margin: 12px; }
    .wrap { padding: 32px 16px; }
    .footer-grid { flex-direction: column; text-align: center; }
    .features-stats { padding: 20px 16px; }
    .fs-num { font-size: 20px; }
}