/* ==========================================================================
   3D Apps — Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg: #08090d;
    --bg-soft: #0d0f16;
    --surface: #12141c;
    --surface-2: #171a24;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.18);
    --text: #f4f5f8;
    --text-dim: #a7acba;
    --text-faint: #6b7284;
    --accent: #e2131f;
    --accent-2: #ff5468;
    --coke: #ff3b52;
    --sprite: #2ee6a6;
    --drpepper: #ff5fa2;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-lg: 0 30px 80px -24px rgba(0, 0, 0, 0.65);
    --nav-h: 76px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-h);
}

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

body::before {
    content: none !important;
    display: none !important;
}

h1, h2, h3, h4, .display-font {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    letter-spacing: -0.02em;
    color: var(--text);
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

p {
    color: var(--text-dim);
}

img {
    max-width: 100%;
}

::selection {
    background: var(--accent);
    color: #fff;
}

.container {
    max-width: 1200px;
}

/* ---------- background texture ---------- */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 15% 10%, rgba(226, 19, 31, 0.16), transparent 45%),
        radial-gradient(circle at 85% 25%, rgba(255, 84, 104, 0.10), transparent 40%),
        radial-gradient(circle at 50% 100%, rgba(255, 59, 82, 0.08), transparent 45%),
        var(--bg);
    background-color: var(--bg);
}

/* ---------- Navbar ---------- */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    background: rgba(8, 9, 13, 0.72);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid var(--border);
}

.site-nav .nav-inner {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.brand {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text) !important;
}

.brand-mark {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 154px;
    height: 64px;
}

.brand-mark img {
    position: relative;
    z-index: 1;
    height: 56px;
    width: auto;
}

.navbar-collapse {
    flex-basis: auto;
    flex-grow: 0;
}

@media (min-width: 1021px) {
    .navbar-collapse {
        display: flex !important;
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.1rem;
}

.nav-link {
    color: var(--text-dim) !important;
    font-weight: 500;
    font-size: 0.94rem;
    position: relative;
    padding: 0.3rem 0;
    transition: color 0.2s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 100%;
    bottom: -2px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transition: right 0.25s ease;
    border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text) !important;
}

.nav-link:hover::after,
.nav-link.active::after {
    right: 0;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem;
    min-width: 170px;
    box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.55rem 0.8rem;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.nav-dropdown-menu a:hover {
    background: var(--surface-2);
    color: var(--text);
}

.nav-toggler {
    display: none;
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: 8px;
    padding: 0.4rem 0.6rem;
    color: var(--text);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.92rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    box-shadow: 0 14px 34px -12px rgba(226, 19, 31, 0.55);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 40px -12px rgba(226, 19, 31, 0.7);
    color: #fff;
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border-color: var(--border-strong);
}

.btn-ghost:hover {
    background: var(--surface-2);
    border-color: var(--text-faint);
    transform: translateY(-2px);
    color: var(--text);
}

.btn-sm {
    padding: 0.5rem 1.1rem;
    font-size: 0.84rem;
}

/* ---------- Hero ---------- */
.hero {
    padding: calc(var(--nav-h) + 5rem) 1.5rem 5rem;
}

.hero-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-2);
    margin-bottom: 1.25rem;
}

.eyebrow::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-2);
    box-shadow: 0 0 0 4px rgba(255, 84, 104, 0.18);
}

.hero-title {
    font-size: clamp(2.3rem, 4.4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.08;
    margin-bottom: 1.3rem;
}

.hero-title .grad {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-text {
    font-size: 1.06rem;
    color: var(--text-dim);
    max-width: 46ch;
    margin-bottom: 2.1rem;
}

.hero-actions {
    display: flex;
    gap: 0.9rem;
    flex-wrap: wrap;
    margin-bottom: 2.4rem;
}

.hero-meta {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.hero-meta-item .num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
}

.hero-meta-item .label {
    font-size: 0.8rem;
    color: var(--text-faint);
}

/* hero 3D viewer frame */
.viewer-frame {
    position: relative;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.viewer-frame::before {
    content: '';
    position: absolute;
    inset: -30%;
    background: radial-gradient(circle at 50% 45%, var(--glow, var(--coke)) 0%, transparent 62%);
    opacity: 0.28;
    filter: blur(10px);
    pointer-events: none;
}

.viewer-frame .x3d-holder {
    position: relative;
    aspect-ratio: 1 / 1;
    width: 100%;
}

.viewer-frame x3d {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.viewer-frame .viewer-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    background: rgba(8, 9, 13, 0.55);
    border: 1px solid var(--border);
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    z-index: 2;
    backdrop-filter: blur(6px);
}

.viewer-frame .viewer-tag .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.2);
}

/* ---------- Sections ---------- */
.section {
    padding: 5rem 1.5rem;
}

.section-tight {
    padding: 3rem 1.5rem 5rem;
}

.section-header {
    max-width: 640px;
    margin: 0 auto 3rem;
    text-align: center;
}

.section-title {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.section-sub {
    color: var(--text-dim);
    font-size: 1.02rem;
}

/* ---------- Skill / feature cards ---------- */
.skills-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
}

.skill-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.6rem;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.skill-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
}

.skill-icon {
    width: 42px;
    height: 42px;
    border-radius: 11px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(226, 19, 31, 0.14);
    color: var(--accent-2);
    font-size: 1.15rem;
    margin-bottom: 1rem;
}

.skill-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.skill-card p {
    font-size: 0.92rem;
    margin: 0;
}

/* ---------- Product showcase ---------- */
.showcase-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.product-card {
    --pc: var(--coke);
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem 1.75rem;
    text-align: center;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-card::before {
    content: '';
    position: absolute;
    top: -60%;
    left: 50%;
    transform: translateX(-50%);
    width: 220px;
    height: 220px;
    background: var(--pc);
    filter: blur(70px);
    opacity: 0.22;
    border-radius: 50%;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: color-mix(in srgb, var(--pc) 45%, var(--border-strong));
    box-shadow: 0 26px 60px -22px rgba(0, 0, 0, 0.6);
}

.product-card:hover::before {
    opacity: 0.35;
}

.product-media {
    position: relative;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.1rem;
}

.product-media img {
    max-height: 140px;
    filter: drop-shadow(0 18px 26px rgba(0, 0, 0, 0.55));
}

.product-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pc);
    margin-bottom: 0.6rem;
}

.product-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
}

.product-card p {
    font-size: 0.92rem;
    flex: 1;
    margin-bottom: 1.4rem;
}

.product-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.65rem 1.3rem;
    border-radius: 999px;
    border: 1px solid var(--border-strong);
    color: var(--text);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.product-card:hover .product-link {
    background: var(--pc);
    border-color: var(--pc);
    color: #0a0a0a;
    transform: translateY(-2px);
}

/* ---------- Product detail page ---------- */
.product-hero {
    padding: calc(var(--nav-h) + 2.4rem) 1.5rem 4rem;
}

.breadcrumb {
    max-width: 1200px;
    margin: 0 auto 1.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-faint);
}

.breadcrumb a {
    color: var(--text-dim);
    font-weight: 500;
}

.breadcrumb a:hover {
    color: var(--text);
}

.product-detail-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.viewer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.1rem;
    flex-wrap: wrap;
}

.viewer-hint {
    font-size: 0.83rem;
    color: var(--text-faint);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.info-panel {
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
}

.info-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--pc, var(--coke));
    background: color-mix(in srgb, var(--pc, var(--coke)) 16%, transparent);
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

.info-panel h1 {
    font-size: clamp(1.9rem, 3.2vw, 2.5rem);
    margin-bottom: 0.9rem;
}

.info-panel .lead {
    font-size: 1.02rem;
    color: var(--text-dim);
    margin-bottom: 1.6rem;
}

.fact-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1.3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 1.8rem;
}

.fact-item .fact-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    margin-bottom: 0.25rem;
}

.fact-item .fact-value {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
}

.info-actions {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.related-section {
    max-width: 1200px;
    margin: 4.5rem auto 0;
}

.related-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.2rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
}

.related-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem 1.2rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.related-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}

.related-card img {
    width: 46px;
    height: 46px;
    object-fit: contain;
}

.related-card .rc-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.related-card .rc-cta {
    margin-left: auto;
    color: var(--text-faint);
}

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 2.6rem 1.5rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    color: var(--text);
}

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

.footer-links {
    display: flex;
    gap: 1.4rem;
}

.footer-links a {
    color: var(--text-dim);
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--text);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero-grid,
    .product-detail-grid {
        grid-template-columns: 1fr;
    }

    .info-panel {
        position: static;
    }
}

/* Nav switches to the hamburger menu earlier than the content
   reflow above, so the centered brand mark never collides with
   the inline nav links. */
@media (max-width: 1020px) {
    .nav-links {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        background: var(--bg-soft);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        align-items: flex-start;
        padding: 1.2rem 1.5rem 1.6rem;
        gap: 1.1rem;
    }

    .nav-dropdown-menu {
        display: block;
        position: static;
        transform: none;
        background: transparent;
        border: none;
        padding: 0.4rem 0 0 0.6rem;
        box-shadow: none;
    }

    .nav-toggler {
        display: inline-flex;
    }
}

@media (max-width: 560px) {
    .fact-list {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: calc(var(--nav-h) + 3rem);
    }
}