/* ============================================================
   NYNE LABS — site styles
   Built on top of css/retro.css (shuttle retro design system).
   Template: editorial / newspaper landing, white theme.
   ============================================================ */

/* ---------- white theme ---------- */

:root {
    --bg: #f5f5f4;
    --bg-raise: #efeeec;
    --ink: #000000;
    --ink-dim: #5c5c5c;
    --ink-faint: #8c8c8c;
    --hairline: #e0dedb;
    --hairline-strong: #c9c7c3;
    --green: #15803d;
    --amber: #b45309;
    --red: #dc2626;
    --blue: #1d4ed8;

    --maxw: 1100px;
    --pad: 24px;
    --display: clamp(48px, 9vw, 104px);
    --heading: clamp(26px, 3.6vw, 40px);

    --text-xs: 12px;
    --text-sm: 13px;
    --text-base: 16px;
    --text-lg: 20px;
    --text-xl: 24px;
}

body {
    font-weight: 600;
}

#bg {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    pointer-events: none;
}

::selection {
    background: var(--ink);
    color: var(--bg);
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
}

/* ---------- top bar (fixed, full-width) ---------- */

#topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    max-width: none;
    background: var(--bg);
    margin: 0;
    padding: 14px var(--pad);
    border-bottom: 1px solid var(--hairline);
}

#topbar .brand {
    font-size: var(--text-base);
    text-decoration: none;
}

#topbar .brand:hover {
    background: transparent;
    color: var(--ink);
}

.logo-img {
    display: block;
    width: 22px;
    height: 22px;
}

.brand-name {
    letter-spacing: 0.28em;
}

.nav a {
    font-size: var(--text-sm);
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.mobile-menu-btn:hover,
.mobile-menu-btn:active,
.mobile-menu-btn:focus-visible {
    background: none;
    border-color: transparent;
    color: inherit;
}

.mobile-menu-btn span {
    width: 22px;
    height: 1px;
    background: var(--ink);
    transition: transform 0.2s ease;
}

.mobile-menu-btn.active span:first-child {
    transform: rotate(45deg) translate(3px, 3px);
}

.mobile-menu-btn.active span:last-child {
    transform: rotate(-45deg) translate(3px, -3px);
}

/* ---------- shared ---------- */

.wrap-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--pad);
}

.section-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--ink-dim);
    text-align: center;
    margin-bottom: var(--space-5);
}

/* ---------- intro ---------- */

.intro {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 160px var(--pad) var(--space-7);
    text-align: center;
}

.intro-title {
    font-size: var(--heading);
    text-transform: uppercase;
    letter-spacing: var(--tracking-caps);
    margin-bottom: var(--space-3);
}

.intro-text {
    font-size: var(--text-base);
    color: var(--ink-dim);
    margin: 0;
}

/* ---------- product ---------- */

.product {
    padding: var(--space-7) 0 var(--space-6);
}

.product .wrap-inner {
    text-align: center;
}

.app-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-5) var(--space-6);
    align-items: center;
}

.app {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.app-icon {
    display: block;
    width: 40px;
    height: 40px;
}

.app-name {
    font-size: var(--text-lg);
    text-transform: uppercase;
    letter-spacing: var(--tracking-caps);
    margin: 0;
}

/* ---------- about ---------- */

.about {
    padding: var(--space-7) 0;
    border-top: 1px solid var(--hairline);
}

.about-copy {
    width: max-content;
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

.about-copy p {
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--ink-dim);
    white-space: nowrap;
}

.about-copy p:last-child {
    margin-bottom: 0;
}

/* ---------- contact ---------- */

.contact {
    padding: var(--space-7) 0;
    border-top: 1px solid var(--hairline);
    text-align: center;
}

.contact-text {
    font-size: var(--text-base);
    color: var(--ink-dim);
    margin-bottom: var(--space-4);
}

.contact-email {
    display: inline-block;
    font-size: clamp(22px, 4vw, 40px);
    font-weight: 700;
    color: var(--ink);
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 4px;
    text-decoration: none;
}

.contact-email:hover {
    background: transparent;
    color: var(--ink);
    border-bottom-color: var(--ink);
}

/* ---------- footer ---------- */

.footer {
    padding: var(--space-5) 0;
    border-top: 1px solid var(--hairline);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.footer-brand:hover {
    background: transparent;
    color: var(--ink);
}

.footer-logo-img {
    display: block;
    width: 18px;
    height: 18px;
}

.footer-copy {
    font-size: var(--text-xs);
    color: var(--ink-dim);
}

/* ---------- mobile ---------- */

@media (max-width: 768px) {
    #topbar {
        padding: 14px 24px;
    }

    .nav {
        display: none;
        position: absolute;
        top: calc(100% + 1px);
        right: 24px;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--space-4);
        width: auto;
        min-width: 180px;
        background: var(--bg);
        border: 1px solid var(--hairline-strong);
        padding: var(--space-4) var(--space-5);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        z-index: 99;
    }

    .nav.active {
        display: flex;
    }

    .nav a {
        font-size: var(--text-base);
        font-weight: 700;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        color: var(--ink);
    }

    .mobile-menu-btn {
        display: flex;
        z-index: 101;
    }

    .intro {
        padding-top: 120px;
    }

    .about-copy p {
        font-size: max(8px, min(var(--text-base), calc((100vw - 48px) / 33)));
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }
}