:root {
    --bg-body: #0f172a;
    --bg-main: #020617;
    --bg-card: rgba(15, 23, 42, 0.96);
    --primary: #38bdf8;
    --primary-soft: #e0f2fe;
    --accent: #22c55e;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: rgba(148, 163, 184, 0.6);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, #0b1120, #020617),
        linear-gradient(135deg, #0f172a, #020617);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: #7dd3fc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 18px;
}

.narrow {
    max-width: 720px;
    margin: 0 auto;
}

/* Header */

.site-header {
    position: relative;
    z-index: 30;
    background: radial-gradient(circle at top left, #0ea5e9, #020617);
    border-bottom: 1px solid rgba(148, 163, 184, 0.55);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.9);
}

.header-inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) auto auto;
    align-items: center;
    gap: 14px;
    padding: 10px 0;
}

.logo-block {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #e5e7eb;
}

.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: radial-gradient(circle at 30% 20%, #38bdf8, #1d4ed8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.9);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-weight: 600;
    font-size: 14px;
}

.logo-sub {
    font-size: 11px;
    color: #cbd5f5;
}

.main-nav {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    font-size: 14px;
}

.main-nav a {
    padding: 4px 10px;
    border-radius: 999px;
    color: #e5e7eb;
}

.main-nav a:hover {
    background: rgba(15, 23, 42, 0.6);
}

.cart-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.8);
    background: rgba(15, 23, 42, 0.76);
    font-size: 13px;
    color: #e5e7eb;
}

.cart-pill span:last-child {
    min-width: 22px;
    height: 22px;
    border-radius: 999px;
    background: #38bdf8;
    color: #0b1120;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.menu-toggle {
    display: none;
    width: 36px;
    height: 32px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.9);
    background: rgba(15, 23, 42, 0.8);
    padding: 0 8px;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    height: 2px;
    border-radius: 999px;
    background: #e5e7eb;
}

.page-main {
    padding: 22px 0 40px;
}

/* Hero */

.hero {
    position: relative;
    padding: 24px 0 30px;
}

.hero-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-layer-top {
    background:
        radial-gradient(circle at 10% 0%, rgba(59, 130, 246, 0.68), transparent 60%),
        radial-gradient(circle at 90% 5%, rgba(56, 189, 248, 0.35), transparent 60%);
    opacity: 0.6;
}

.hero-layer-bottom {
    background:
        radial-gradient(circle at 0% 100%, rgba(15, 118, 110, 0.4), transparent 60%),
        radial-gradient(circle at 100% 100%, rgba(6, 78, 59, 0.5), transparent 60%);
    opacity: 0.7;
}

.hero-layout {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
    gap: 20px;
    align-items: stretch;
}

.card {
    background: var(--bg-card);
    border-radius: 14px;
    padding: 16px 18px 18px;
    border: 1px solid var(--border);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.95);
}

.hero-card {
    border-radius: 16px;
}

.hero-copy .eyebrow {
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 8px;
}

.hero-copy h1 {
    margin: 0 0 10px;
    font-size: 25px;
    line-height: 1.3;
}

.hero-lead {
    margin: 0 0 12px;
    color: var(--muted);
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.hero-tags span {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.6);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.hero-footnote {
    font-size: 12px;
    color: var(--muted);
}

.hero-side {
    border-radius: 18px;
    padding: 12px 14px 14px;
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.72));
}

.hero-img {
    width: 100%;
    border-radius: 14px;
    display: block;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.badge {
    font-size: 11px;
    padding: 4px 9px;
    border-radius: 999px;
}

.badge-soft {
    background: rgba(34, 197, 94, 0.08);
    color: #bbf7d0;
}

.badge-outline {
    border: 1px dashed rgba(125, 211, 252, 0.7);
    color: #e0f2fe;
    background: rgba(15, 23, 42, 0.7);
}

.hero-meta-grid {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
    font-size: 13px;
}

.meta-label {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 10px;
    color: #a5b4fc;
}

.meta-text {
    margin: 2px 0 0;
}

/* Sections */

.section {
    padding: 12px 0 26px;
}

.section-strips .strip-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
    gap: 18px;
}

.strip {
    border-radius: 16px;
    padding: 14px 16px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 64, 175, 0.85));
    border: 1px solid rgba(129, 140, 248, 0.7);
}

.strip-list {
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), rgba(12, 74, 110, 0.96));
}

.strip ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 14px;
}

.strip li {
    padding: 6px 0;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.8);
}

.strip li:last-child {
    border-bottom: none;
}

.section-title {
    margin: 0 0 12px;
    font-size: 22px;
}

.section-cards-alt .card-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 14px;
}

.slim-card {
    background: radial-gradient(circle at top left, rgba(30, 64, 175, 0.8), rgba(15, 23, 42, 0.96));
    border-color: rgba(129, 140, 248, 0.6);
}

/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 999px;
    border: none;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.1s ease, color 0.1s ease, border-color 0.1s ease;
}

.btn:active {
    transform: translateY(1px);
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #0b1120;
    box-shadow: 0 14px 32px rgba(8, 47, 73, 0.9);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(148, 163, 184, 0.8);
    color: #e5e7eb;
}

.btn-outline:hover {
    border-color: #38bdf8;
    background: rgba(15, 23, 42, 0.8);
}

.btn-block {
    width: 100%;
}

/* Page header */

.page-header {
    padding: 18px 0 14px;
}

.page-header h1 {
    margin: 0 0 8px;
    font-size: 24px;
}

.page-header p {
    margin: 0;
    color: var(--muted);
}

/* Catalog */

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.product-card {
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.9));
}

.product-card-focus {
    border-color: rgba(56, 189, 248, 0.9);
    box-shadow: 0 20px 40px rgba(8, 47, 73, 0.95);
}

.product-meta {
    font-size: 13px;
    color: var(--muted);
}

.product-price {
    font-weight: 600;
    margin: 6px 0 10px;
}

.info-card {
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.96), rgba(6, 78, 59, 0.9));
    border-color: rgba(45, 212, 191, 0.7);
}

/* Product layout */

.product-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
    gap: 18px;
}

.product-main ul {
    padding-left: 20px;
}

.product-side {
    align-self: flex-start;
}

.side-img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 10px;
}

.product-price.big {
    font-size: 24px;
}

.small-note {
    font-size: 12px;
    color: var(--muted);
}

/* Cart */

.cart-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1.1fr);
    gap: 18px;
}

.cart-items {
    border-radius: 12px;
    border: 1px dashed rgba(148, 163, 184, 0.7);
    padding: 10px;
    background: rgba(15, 23, 42, 0.9);
    font-size: 14px;
}

.cart-item-row {
    display: grid;
    grid-template-columns: 1.7fr auto auto auto;
    gap: 8px;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(30, 64, 175, 0.7);
}

.cart-item-row:last-child {
    border-bottom: none;
}

.cart-item-name {
    font-weight: 500;
}

.cart-summary {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-weight: 600;
}

.cart-empty {
    text-align: center;
    color: var(--muted);
    padding: 8px 0;
}

input,
textarea {
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.9);
    padding: 8px 10px;
    font: inherit;
    background: rgba(15, 23, 42, 0.9);
    color: var(--text);
}

input:focus,
textarea:focus {
    outline: 1px solid #38bdf8;
    border-color: #38bdf8;
    background: #020617;
}

input[type="number"] {
    width: 76px;
}

/* Contact & about grids */

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
    gap: 18px;
}

.soft-card {
    background: linear-gradient(150deg, rgba(15, 23, 42, 0.96), rgba(30, 64, 175, 0.85));
    border-color: rgba(129, 140, 248, 0.7);
}

/* Forms */

.form-grid {
    display: grid;
    gap: 10px;
}

.form-grid label {
    display: grid;
    gap: 4px;
    font-size: 14px;
}

/* Footer */

.site-footer {
    background: #020617;
    color: #e5e7eb;
    padding: 22px 0 28px;
    font-size: 13px;
    border-top: 1px solid rgba(30, 64, 175, 0.8);
}

.site-footer a {
    color: #7dd3fc;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.2fr) minmax(0, 1.1fr);
    gap: 20px;
}

.footer-col h3,
.footer-col h4 {
    margin-top: 0;
}

.footer-note {
    font-size: 12px;
    color: #bfdbfe;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 8px 0;
}

.footer-links li {
    margin-bottom: 4px;
}

.footer-copy {
    margin-top: 6px;
    color: #9ca3af;
}

/* Success */

.success-card {
    text-align: left;
}

/* Responsive */

@media (max-width: 980px) {
    .hero-layout {
        grid-template-columns: minmax(0, 1.1fr);
    }
    .hero-side {
        order: -1;
    }
    .section-strips .strip-grid {
        grid-template-columns: minmax(0, 1.1fr);
    }
    .product-layout {
        grid-template-columns: minmax(0, 1.1fr);
    }
    .cart-grid {
        grid-template-columns: minmax(0, 1.1fr);
    }
    .contact-grid {
        grid-template-columns: minmax(0, 1.1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        grid-template-columns: minmax(0, 1.5fr) auto;
        grid-template-rows: auto auto;
        row-gap: 8px;
    }
    .logo-block {
        order: 1;
    }
    .menu-toggle {
        display: inline-flex;
        order: 2;
        justify-self: flex-end;
    }
    .main-nav {
        position: fixed;
        inset: 58px 0 auto 0;
        padding: 12px 18px 16px;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(18px);
        flex-direction: column;
        align-items: flex-start;
        transform: translateY(-140%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.18s ease, opacity 0.18s ease;
        z-index: 40;
    }
    .main-nav a {
        color: #e5e7eb;
        padding: 6px 0;
    }
    .cart-pill {
        position: fixed;
        right: 18px;
        bottom: 18px;
        z-index: 41;
        box-shadow: 0 14px 30px rgba(15, 23, 42, 0.9);
    }
    body.nav-open .main-nav {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
}

@media (max-width: 540px) {
    .hero-copy h1 {
        font-size: 22px;
    }
    .cart-item-row {
        grid-template-columns: 1.7fr auto auto;
        grid-template-rows: auto auto;
    }
    .footer-grid {
        grid-template-columns: minmax(0, 1.1fr);
    }
}