:root {
    color-scheme: dark;
    --bg: #070914;
    --bg-2: #0d1222;
    --surface: #121a2d;
    --surface-2: #17213a;
    --line: #293752;
    --text: #f5f8ff;
    --muted: #a8b4cf;
    --cyan: #55f6ff;
    --magenta: #ff4fd8;
    --green: #62f29a;
    --amber: #ffbd59;
    --danger: #ff6b6b;
    --radius: 8px;
    --shadow: 0 18px 60px rgba(0, 0, 0, .35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 20% 0%, rgba(85, 246, 255, .12), transparent 28rem),
        radial-gradient(circle at 80% 10%, rgba(255, 79, 216, .10), transparent 26rem),
        var(--bg);
    color: var(--text);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea {
    font: inherit;
}
button, .button-link {
    border: 0;
    color: #031018;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    padding: .85rem 1rem;
    border-radius: var(--radius);
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 0 24px rgba(85, 246, 255, .20);
    display: inline-flex;
    justify-content: center;
    align-items: center;
}
button:disabled { opacity: .5; cursor: not-allowed; }
.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); box-shadow: none; }
.small-btn { width: 100%; margin-top: .9rem; }
.wide { width: 100%; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .9rem clamp(1rem, 4vw, 4rem);
    background: rgba(7, 9, 20, .82);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.brand { display: flex; align-items: center; gap: .65rem; font-weight: 900; letter-spacing: 0; }
.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 7px;
    color: #041017;
    background: linear-gradient(135deg, var(--cyan), var(--magenta));
}
.nav { display: flex; align-items: center; gap: 1rem; color: var(--muted); font-weight: 700; font-size: .94rem; }
.nav a:hover { color: var(--text); }
.cart-link { color: var(--cyan); }
.cart-link span { margin-left: .25rem; color: var(--bg); background: var(--cyan); border-radius: 999px; padding: .1rem .42rem; }
.nav-toggle { display: none; background: var(--surface); color: var(--text); box-shadow: none; }
.flash {
    margin: 1rem auto 0;
    max-width: 1120px;
    padding: .9rem 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}
.flash.success { border-color: rgba(98, 242, 154, .45); }
.flash.danger { border-color: rgba(255, 107, 107, .55); }
.flash.warning { border-color: rgba(255, 189, 89, .55); }
.hero {
    min-height: calc(86vh - 5rem);
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .8fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
    padding: clamp(2rem, 4vw, 4rem) clamp(1rem, 4vw, 4rem);
}
.hero h1 {
    max-width: 920px;
    margin: 0;
    font-size: clamp(2.75rem, 6.4vw, 5.35rem);
    line-height: .96;
    letter-spacing: 0;
}
.hero p { max-width: 640px; color: var(--muted); font-size: 1.12rem; line-height: 1.7; }
.hero-search {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: .75rem;
    max-width: 760px;
    padding: .55rem;
    background: rgba(18, 26, 45, .9);
    border: 1px solid var(--line);
    border-radius: 10px;
}
.hero-search input, .filters input, .filters select, label input, textarea, .stacked-inputs input, .stacked-inputs textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #0b1020;
    color: var(--text);
    padding: .85rem .9rem;
}
.trust-row { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; color: var(--muted); }
.trust-row span, .meta-row span, .platform-list a {
    border: 1px solid rgba(85, 246, 255, .26);
    background: rgba(85, 246, 255, .08);
    border-radius: 999px;
    padding: .45rem .7rem;
}
.hero-panel { min-height: 26rem; position: relative; display: grid; align-content: center; gap: 1rem; opacity: 1; }
.glow-card {
    padding: 1.4rem;
    border: 1px solid rgba(255, 255, 255, .12);
    background: linear-gradient(145deg, rgba(23, 33, 58, .94), rgba(12, 18, 34, .95));
    border-radius: 14px;
    box-shadow: var(--shadow), 0 0 40px rgba(255, 79, 216, .13);
}
.glow-card span { color: var(--cyan); text-transform: uppercase; font-size: .78rem; font-weight: 900; }
.glow-card strong { display: block; margin: .7rem 0; font-size: 2.2rem; line-height: 1.05; }
.glow-card em { color: var(--green); font-size: 1.4rem; font-style: normal; font-weight: 900; }
.console-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.console-grid span {
    min-height: 6rem;
    display: grid;
    place-items: center;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: linear-gradient(160deg, rgba(85, 246, 255, .10), rgba(255, 79, 216, .08));
    font-weight: 900;
}
.page, .section, .platform-band, .footer {
    max-width: 1180px;
    margin: 0 auto;
    padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 3vw, 2rem);
}
.narrow { max-width: 840px; }
.section-head, .admin-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}
h1, h2, h3 { letter-spacing: 0; }
h2 { font-size: clamp(1.65rem, 3vw, 2.5rem); }
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 1rem;
}
.product-card {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(18, 26, 45, .88);
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.product-card:hover { transform: translateY(-4px); border-color: rgba(85, 246, 255, .5); box-shadow: 0 12px 36px rgba(85, 246, 255, .10); }
.cover { position: relative; aspect-ratio: 16 / 10; background: var(--surface-2); overflow: hidden; }
.cover img { width: 100%; height: 100%; object-fit: cover; }
.deal-tag { position: absolute; top: .7rem; left: .7rem; color: #111; background: var(--amber); border-radius: 999px; padding: .25rem .5rem; font-weight: 900; }
.product-body { padding: 1rem; }
.meta-row { display: flex; gap: .35rem; flex-wrap: wrap; color: var(--muted); font-size: .8rem; }
.meta-row.large { font-size: .95rem; margin: 1rem 0; }
.product-body h3 { min-height: 3.2rem; margin: .75rem 0; font-size: 1.05rem; }
.price-row, .summary, .summary-line, .cart-line {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}
.stock.in { color: var(--green); }
.stock.out { color: var(--danger); }
.platform-band {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.platform-list { display: flex; flex-wrap: wrap; gap: .75rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.steps { color: var(--muted); line-height: 2; }
.secure-box, .notice, .order-summary, .auth-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(18, 26, 45, .86);
    padding: 1.25rem;
}
.notice.success { border-color: rgba(98, 242, 154, .45); }
.notice.warning { border-color: rgba(255, 189, 89, .55); }
.notice.danger { border-color: rgba(255, 107, 107, .55); }
.store-header { margin-bottom: 1.2rem; }
.filters {
    display: grid;
    grid-template-columns: repeat(4, minmax(120px, 1fr));
    gap: .75rem;
    padding: 1rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(18, 26, 45, .72);
}
.product-detail {
    display: grid;
    grid-template-columns: minmax(280px, .9fr) minmax(0, 1.1fr);
    gap: 2rem;
}
.product-art img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); }
.breadcrumbs { color: var(--muted); font-size: .9rem; }
.detail-price { color: var(--green); font-size: 2.2rem; font-weight: 900; margin: 1rem 0; }
.action-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.cart-list { display: grid; gap: .75rem; }
.cart-line { padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.cart-line span { display: block; color: var(--muted); margin-top: .25rem; }
.checkout-page { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 1.5rem; align-items: start; }
.checkout-form, .auth-card, .settings-grid section { display: grid; gap: 1rem; }
.checkout-form label, .auth-card label, .settings-grid label { display: grid; gap: .4rem; color: var(--muted); font-weight: 700; }
.check { grid-template-columns: auto 1fr; align-items: center; }
.payment-panel { display: grid; gap: .8rem; margin-top: 1rem; }
.summary-line { padding: .65rem 0; border-bottom: 1px solid var(--line); }
.summary-line.total { font-size: 1.25rem; border-bottom: 0; }
.code-list { display: grid; gap: .75rem; margin-top: 1rem; }
.code-card { display: grid; gap: .6rem; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: #0b1020; }
.code-card code { font-size: 1.2rem; color: var(--cyan); overflow-wrap: anywhere; }
.auth-page { min-height: 70vh; display: grid; place-items: center; }
.auth-card { width: min(100%, 440px); }
.admin-nav { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 1.25rem; }
.admin-nav a { padding: .65rem .8rem; border: 1px solid var(--line); border-radius: var(--radius); color: var(--muted); }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.metrics div { padding: 1.1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.metrics span { color: var(--muted); display: block; }
.metrics strong { display: block; margin-top: .5rem; font-size: 1.4rem; }
.admin-table { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 760px; background: rgba(18, 26, 45, .75); }
th, td { padding: .85rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--cyan); font-size: .82rem; text-transform: uppercase; }
.stacked-inputs { display: grid; gap: .45rem; min-width: 220px; }
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}
.settings-grid section { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 1rem; }
.muted, .empty { color: var(--muted); }
.footer { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); border-top: 1px solid var(--line); }
.footer-links { display: flex; gap: 1rem; }
@media (prefers-reduced-motion: no-preference) {
    .hero-panel { animation: floatIn 500ms ease both; }
    @keyframes floatIn { from { transform: translateY(16px); } to { transform: translateY(0); } }
}
@media (max-width: 860px) {
    .nav-toggle { display: inline-flex; }
    .nav {
        display: none;
        position: absolute;
        top: 4rem;
        left: 1rem;
        right: 1rem;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: #0b1020;
    }
    .nav.open { display: flex; }
    .hero, .product-detail, .checkout-page, .split { grid-template-columns: 1fr; }
    .hero { min-height: auto; }
    .hero-search { grid-template-columns: 1fr; }
    .filters { grid-template-columns: 1fr; }
    .metrics { grid-template-columns: 1fr 1fr; }
    .footer { flex-direction: column; }
}
@media (max-width: 520px) {
    .metrics, .action-row { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.65rem; }
}