/* ============================================================
   BackBox Labs — Layout & page-level composition
   Containers, hero, sections, grids, responsive breakpoints.
   ============================================================ */


/* ------------------------------------------------------------
   Container
   ------------------------------------------------------------ */
.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--gutter);
}
.container-wide {
    width: 100%;
    max-width: var(--container-wide);
    margin-inline: auto;
    padding-inline: var(--gutter);
}


/* ------------------------------------------------------------
   Generic section padding & alternating backgrounds
   ------------------------------------------------------------ */
section { padding-block: var(--section-y); }

/* Alternating dark / dark-soft band for content sections inside <main>.
   Hero, page-hero, blog-hero and CTA band keep their own backgrounds. */
main > section { background: var(--bg); }
main > section:nth-of-type(even) { background: var(--bg-elev); }
main > section.hero,
main > section.page-hero,
main > section.blog-hero {
    background: transparent;
}


/* ------------------------------------------------------------
   Hero (homepage)
   Three layered backgrounds:
   - .hero-bg: soft ambient gradient that anchors the section
   - .hero-grid: subtle constellation grid (animated drift)
   - .hero-lines: original signal-flow SVG curves (slow pulse)
   ------------------------------------------------------------ */
.hero {
    position: relative;
    padding-block: clamp(4rem, 9vw, 8rem) clamp(3rem, 6vw, 6rem);
    overflow: hidden;
    isolation: isolate;
}
.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(60% 55% at 88% 8%,  rgba(61, 139, 255, 0.18), transparent 70%),
        radial-gradient(50% 50% at 12% 95%, rgba(127, 168, 255, 0.08), transparent 70%);
}
/* Animated constellation: tiny dots on a grid with one slow horizontal drift */
.hero::before {
    content: '';
    position: absolute;
    inset: -10% -5%;
    z-index: -1;
    pointer-events: none;
    background-image:
        radial-gradient(rgba(61, 139, 255, 0.32) 1px, transparent 1.5px),
        radial-gradient(rgba(127, 168, 255, 0.18)  1px, transparent 1.5px);
    background-size: 72px 72px, 108px 108px;
    background-position: 0 0, 36px 36px;
    mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, #000 0%, transparent 70%);
    animation: hero-drift 40s linear infinite;
    opacity: 0.7;
}
/* Operator scanlines: thin horizontal hairlines drifting slowly downward */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 5px,
        rgba(61, 139, 255, 0.045) 5px,
        rgba(61, 139, 255, 0.045) 6px
    );
    mask-image: linear-gradient(to bottom, transparent 0%, #000 18%, #000 82%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 18%, #000 82%, transparent 100%);
    animation: hero-scan 28s linear infinite;
    opacity: 0.85;
}
.hero-lines {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.55;
    pointer-events: none;
}
.hero-lines svg {
    width: 100%;
    height: 100%;
    display: block;
}
.hero-lines path {
    fill: none;
    stroke: var(--accent);
    stroke-width: 0.6;
    opacity: 0.5;
    stroke-dasharray: 4 6;
    animation: hero-trace 18s linear infinite;
}
.hero-lines path:nth-child(2) { animation-duration: 22s; opacity: 0.35; }
.hero-lines path:nth-child(3) { animation-duration: 26s; opacity: 0.35; animation-direction: reverse; }
.hero-lines path:nth-child(4) { animation-duration: 30s; opacity: 0.5;  animation-direction: reverse; }

@keyframes hero-drift {
    from { background-position: 0 0,        28px 28px; }
    to   { background-position: 56px -28px, 84px 56px; }
}
@keyframes hero-scan {
    from { background-position: 0 0; }
    to   { background-position: 0 240px; }
}
@keyframes hero-trace {
    to { stroke-dashoffset: -200; }
}

@media (prefers-reduced-motion: reduce) {
    .hero::before, .hero::after, .hero-lines path { animation: none; }
}

.hero-content {
    position: relative;
    z-index: 1;
}
.hero-tag {
    display: inline-flex;
    margin-bottom: var(--sp-md);
}
.hero-tag .eyebrow {
    padding: 0.4rem 0.8rem;
    border: var(--hairline);
    border-radius: 999px;
    background: rgba(6, 8, 13, 0.5);
    backdrop-filter: blur(8px);
}
.hero-tag .eyebrow::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 0.5rem;
    box-shadow: 0 0 8px var(--accent-glow);
}

.hero h1 {
    font: 800 var(--fs-5xl)/0.98 var(--font-display);
    letter-spacing: var(--tracking-display);
    color: var(--text);
    margin-bottom: var(--sp-lg);
    max-width: none;
}
.hero h1 span { display: inline; }
.hero h1 .lime { color: var(--accent); font-style: normal; }
.hero-cursor {
    display: inline-block;
    width: 0.55em;
    height: 0.85em;
    margin-left: 0.1em;
    vertical-align: -0.05em;
    background: var(--accent);
    animation: blink 1.05s steps(1) infinite;
}

.hero-lede {
    font: 400 clamp(1.05rem, 1.6vw, 1.35rem)/1.55 var(--font-display);
    color: var(--text-dim);
    max-width: 64rem;
    margin-bottom: var(--sp-lg);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-sm);
    margin-bottom: var(--sp-lg);
}

.hero-trust {
    font: 500 var(--fs-xs)/1.4 var(--font-mono);
    color: var(--text-mute);
    letter-spacing: var(--tracking-mono);
    text-transform: uppercase;
}


/* ------------------------------------------------------------
   Page hero (inner pages)
   ------------------------------------------------------------ */
.page-hero {
    padding-block: clamp(3rem, 6vw, 5rem) clamp(2.25rem, 4vw, 3.5rem);
    border-bottom: var(--hairline);
    background:
        radial-gradient(80% 100% at 100% 0%, var(--accent-trace), transparent 60%);
}
.page-hero .eyebrow { margin-bottom: var(--sp-md); }
.page-hero h1 {
    font: 800 var(--fs-4xl)/var(--lh-tight) var(--font-display);
    letter-spacing: var(--tracking-display);
    color: var(--text);
    margin-bottom: var(--sp-md);
    max-width: 24ch;
}
.page-hero h1 em { font-style: normal; color: var(--accent); }
.page-hero-lede {
    font: 400 clamp(1.05rem, 1.4vw, 1.25rem)/1.55 var(--font-display);
    color: var(--text-dim);
    max-width: 48rem;
}
.page-hero .hero-cta {
    margin-top: var(--sp-xl);
    margin-bottom: 0;
}


/* ------------------------------------------------------------
   Services (homepage teaser & full page)
   ------------------------------------------------------------ */
.services-teaser-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: var(--sp-md);
}

.services-list {
    counter-reset: srow;
}


/* ------------------------------------------------------------
   Industries
   ------------------------------------------------------------ */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    gap: 0;
    border: var(--hairline);
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.industries-grid .cell {
    border-right: var(--hairline);
    border-bottom: var(--hairline);
    border-radius: 0;
    background: var(--bg);
}
.industries-grid .cell:hover {
    background: var(--surface-2);
}


/* ------------------------------------------------------------
   About grid
   ------------------------------------------------------------ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--sp-xl);
    align-items: start;
}


/* ------------------------------------------------------------
   Capabilities
   ------------------------------------------------------------ */
.capabilities {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--sp-md);
}
@media (max-width: 1100px) {
    .capabilities { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    .capabilities { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .capabilities { grid-template-columns: 1fr; }
}


/* ------------------------------------------------------------
   Product (BackBox AI)
   ------------------------------------------------------------ */
.product .product-headline + .steps,
.product .steps {
    counter-reset: step;
}
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    gap: var(--sp-md);
}


/* ------------------------------------------------------------
   Modes
   ------------------------------------------------------------ */
.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
    gap: var(--sp-md);
}


/* ------------------------------------------------------------
   Profiles
   ------------------------------------------------------------ */
.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
    gap: var(--sp-md);
}


/* ------------------------------------------------------------
   Stats
   ------------------------------------------------------------ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
    gap: 0;
    border-top: var(--hairline);
    border-bottom: var(--hairline);
}


/* ------------------------------------------------------------
   Certs
   ------------------------------------------------------------ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--sp-sm);
}
@media (max-width: 1100px) {
    .certs-grid { grid-template-columns: repeat(4, 1fr); }
    .certs-grid .cert-empty { display: none; }
}
@media (max-width: 600px) {
    .certs-grid { grid-template-columns: repeat(2, 1fr); }
}


/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */


/* ============================================================
   Reveal animation: progressive reveal of children
   ============================================================ */

.services-teaser-grid > .reveal:nth-child(1)  { transition-delay: 0ms; }
.services-teaser-grid > .reveal:nth-child(2)  { transition-delay: 60ms; }
.services-teaser-grid > .reveal:nth-child(3)  { transition-delay: 120ms; }
.services-teaser-grid > .reveal:nth-child(4)  { transition-delay: 180ms; }
.services-teaser-grid > .reveal:nth-child(5)  { transition-delay: 240ms; }


/* ============================================================
   Responsive — tablet
   ============================================================ */

@media (max-width: 1100px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .footer-brand { grid-column: 1 / -1; }

    .product-headline {
        grid-template-columns: 1fr;
        gap: var(--sp-lg);
    }

    .community-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-lg);
    }

    .service-row {
        grid-template-columns: 60px 1fr 1fr;
        gap: var(--sp-md);
    }
    .service-row .outcomes {
        grid-column: 2 / -1;
    }
}


/* ============================================================
   Responsive — mobile
   ============================================================ */

@media (max-width: 768px) {
    :root {
        --gutter: 1.25rem;
        --section-y: 3.5rem;
    }

    .navbar .container { gap: var(--sp-sm); }

    .navbar-brand { margin-right: auto; }
    .nav-toggle { display: inline-grid; }

    .nav-links {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: var(--sp-md);
        background: var(--bg-elev);
        border-bottom: var(--hairline);
        transform: translateY(-100%);
        transition: transform var(--t-base), opacity var(--t-base),
                    visibility 0s linear var(--t-base);
        z-index: calc(var(--z-nav) - 1);
        margin-left: 0;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transition: transform var(--t-base), opacity var(--t-base),
                    visibility 0s linear 0s;
    }
    .nav-links li { width: 100%; }
    .nav-links a {
        display: flex;
        width: 100%;
        padding: 0.85rem 1rem;
        border-bottom: var(--hairline-sm);
    }
    .nav-links a.active::after { display: none; }
    .nav-links a.active { color: var(--accent); }

    .lang-switcher { margin-left: 0; }

    .hero h1 { max-width: 100%; }

    .about-grid { grid-template-columns: 1fr; gap: var(--sp-lg); }

    .service-row {
        grid-template-columns: 1fr;
        gap: var(--sp-sm);
        padding-block: var(--sp-lg);
    }
    .service-row > .idx { padding-top: 0; }
    .service-row .outcomes { grid-column: 1; }

    .cve-row {
        grid-template-columns: 1fr;
        gap: var(--sp-xs);
    }

    .contact-row {
        grid-template-columns: 1fr;
        gap: var(--sp-2xs);
    }

    .cta-band-inner {
        grid-template-columns: 1fr;
        gap: var(--sp-lg);
    }
    .cta-band-actions {
        flex-direction: row;
        align-items: stretch;
        flex-wrap: wrap;
    }
    .cta-band-actions .btn { flex: 1 1 auto; justify-content: center; }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-lg);
    }
    .footer-brand { grid-column: 1 / -1; }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--sp-xs);
    }

    .industries-grid {
        grid-template-columns: 1fr 1fr;
    }
}


@media (max-width: 480px) {
    :root { --section-y: 2.75rem; }

    .hero { padding-block: clamp(2.5rem, 8vw, 4rem) clamp(2rem, 6vw, 3rem); }

    .stat-num { font-size: clamp(2.6rem, 9vw, 3.4rem); }

    .industries-grid { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: 1; }

    .stats-grid { grid-template-columns: 1fr 1fr; }
}


/* ============================================================
   Print
   ============================================================ */
@media print {
    .navbar,
    .lang-switcher,
    .nav-toggle,
    .hero-lines,
    .hero-bg,
    .cta-band,
    .footer { display: none !important; }
    body { background: #fff; color: #000; }
    body::before, body::after { display: none; }
}