/* ==========================================================================
   Azolute AI Technologies, site stylesheet
   Custom design system: dark theme, violet accent (#8050f0 from brand logo).
   No framework dependencies. Replaces the old Ashley template CSS.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
    --bg: #07070d;
    --bg-soft: #0c0c16;
    --bg-raise: #10101c;
    --card: #11111e;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);

    --text: #f2f2f8;
    --text-soft: #a7a7bb;
    --text-faint: #71718a;

    --accent: #8050f0;
    --accent-soft: #a78bfa;
    --accent-ink: #ffffff;
    --accent-glow: rgba(128, 80, 240, 0.35);
    --gradient: linear-gradient(120deg, #9a6bff 0%, #8050f0 45%, #5e8bff 100%);

    --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

    --radius: 18px;
    --radius-sm: 12px;
    --container: 1140px;
    --gutter: 24px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin: 0 0 0.6em;
    text-wrap: balance;
}

/* tracking is size-specific: tighter as type grows (apple-design §15) */
h1 { font-size: clamp(2.6rem, 6.4vw, 4.6rem); line-height: 1.06; letter-spacing: -0.028em; }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); letter-spacing: -0.022em; }
h3 { font-size: clamp(1.35rem, 2.4vw, 1.7rem); }
h4 { font-size: 1.2rem; }

p { margin: 0 0 1.2em; }

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

/* ---------- Layout helpers ---------- */
.container {
    width: 100%;
    max-width: calc(var(--container) + var(--gutter) * 2);
    margin: 0 auto;
    padding-inline: var(--gutter);
}

.section { padding-block: clamp(4.5rem, 9vw, 7.5rem); }
.section-soft { background: var(--bg-soft); }

.section-head { max-width: 46rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent-soft);
    margin-bottom: 1.1rem;
}

.eyebrow::before {
    content: "";
    width: 1.6rem;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient);
}

.lead {
    font-size: clamp(1.1rem, 1.6vw, 1.25rem);
    color: var(--text-soft);
}

.muted { color: var(--text-soft); }

.grad-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.95rem 1.7rem;
    border-radius: 999px;
    border: 1px solid transparent;
    background: var(--accent);
    color: var(--accent-ink);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
    box-shadow: 0 0 0 0 var(--accent-glow);
}

.btn:hover {
    transform: translateY(-2px);
    background: #8f63f5;
    box-shadow: 0 10px 34px -8px var(--accent-glow);
}

.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* instant press feedback on pointer-down (apple-design §1) */
.btn:active {
    transform: scale(0.97);
    transition: transform 100ms ease-out;
}

.btn-ghost {
    background: transparent;
    border-color: var(--line-strong);
    color: var(--text);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent);
    box-shadow: none;
}

.btn-sm { padding: 0.6rem 1.2rem; font-size: 0.85rem; }

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    align-items: center;
}

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    transition: background 0.3s ease, border-color 0.3s ease;
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background: rgba(7, 7, 13, 0.82);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

/* scroll edge effect instead of a hard divider (apple-design §12) */
.site-header::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    height: 18px;
    background: linear-gradient(rgba(7, 7, 13, 0.55), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.site-header.scrolled::after { opacity: 1; }

.header-inner {
    display: flex;
    align-items: center;
    gap: 2rem;
    min-height: 76px;
}

.brand {
    font-family: var(--font-display);
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-right: auto;
}

.brand .dot { color: var(--accent); }

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.9rem;
}

.site-nav a {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-soft);
    position: relative;
    padding-block: 0.3rem;
    transition: color 0.2s ease;
}

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

.site-nav a.active { color: var(--text); }

.site-nav a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
    transition: transform 0.3s var(--ease), opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 860px) {
    .nav-toggle { display: flex; }
    .nav-cta { display: none; }

    .site-nav {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        background: rgba(10, 10, 18, 0.97);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--line);
        padding: 0.5rem var(--gutter) 1.2rem;
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s var(--ease), opacity 0.3s ease, visibility 0.3s;
    }

    .site-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav a {
        width: 100%;
        font-size: 1.15rem;
        padding: 0.8rem 0;
        border-bottom: 1px solid var(--line);
    }

    .site-nav a:last-child { border-bottom: none; }
    .site-nav a.active::after { display: none; }
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    padding-top: clamp(9rem, 18vh, 12rem);
    padding-bottom: clamp(5rem, 10vw, 8rem);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.hero-bg::before {
    /* subtle blueprint grid */
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 10%, #000 30%, transparent 75%);
    mask-image: radial-gradient(ellipse 90% 70% at 50% 10%, #000 30%, transparent 75%);
}

/* Three.js scene canvas (sits inside .hero-bg, behind content) */
.scene-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.4s ease;
}

.scene-canvas.scene-ready { opacity: 1; }

/* Rotating headline word */
.word-rotate .word {
    display: inline-block;
    opacity: 1;
    transform: none;
    transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.word-rotate .word.out {
    opacity: 0;
    transform: translateY(0.45em);
}

/* Cursor glow */
.cursor-glow {
    position: fixed;
    top: -260px;
    left: -260px;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(128, 80, 240, 0.09), transparent 65%);
    pointer-events: none;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.6s ease;
    will-change: transform;
}

.cursor-glow.on { opacity: 1; }

/* Tilt targets */
.card, .step, .founder-mark, .chapter-card { will-change: transform; }
.step, .founder-mark, .chapter-card { transition: transform 0.3s var(--ease); }

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.5;
}

.orb-1 {
    width: 520px;
    height: 520px;
    top: -180px;
    right: -120px;
    background: radial-gradient(circle, rgba(128, 80, 240, 0.55), transparent 65%);
    animation: drift 14s ease-in-out infinite alternate;
}

.orb-2 {
    width: 420px;
    height: 420px;
    bottom: -220px;
    left: -140px;
    background: radial-gradient(circle, rgba(94, 139, 255, 0.35), transparent 65%);
    animation: drift 18s ease-in-out infinite alternate-reverse;
}

@keyframes drift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(-40px, 30px) scale(1.12); }
}

.hero h1 { max-width: 15ch; }

.hero .lead { max-width: 34rem; margin-bottom: 2.2rem; }

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1.6rem;
    margin-top: 2.6rem;
    padding: 0;
    list-style: none;
}

.hero-points li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-soft);
}

.hero-points li::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gradient);
    flex-shrink: 0;
}

/* Inner-page hero (shorter) */
.page-hero {
    position: relative;
    padding-top: clamp(8rem, 16vh, 10.5rem);
    padding-bottom: clamp(3rem, 6vw, 4.5rem);
    overflow: hidden;
}

.page-hero h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); }
.page-hero .lead { max-width: 38rem; }

/* ---------- Cards ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.2rem;
}

.card {
    position: relative;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.8rem 1.6rem;
    transition: transform 0.3s var(--ease), border-color 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover,
a.card:focus-visible {
    transform: translateY(-5px);
    border-color: rgba(128, 80, 240, 0.45);
    box-shadow: 0 18px 44px -18px rgba(0, 0, 0, 0.65), 0 0 40px -22px var(--accent-glow);
}

.card:hover::before { opacity: 1; }

.card h3 { font-size: 1.22rem; margin-bottom: 0.7rem; }

.card p { color: var(--text-soft); font-size: 0.97rem; margin-bottom: 0; }

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(128, 80, 240, 0.12);
    border: 1px solid rgba(128, 80, 240, 0.3);
    color: var(--accent-soft);
    margin-bottom: 1.2rem;
}

.card-icon svg { width: 22px; height: 22px; }

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1.2rem;
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-soft);
}

/* ---------- Service detail blocks ---------- */
.service-block {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: start;
    padding-block: clamp(2.5rem, 5vw, 4rem);
    border-top: 1px solid var(--line);
}

.service-block:first-of-type { border-top: none; }

.service-block .num {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--accent-soft);
    display: block;
    margin-bottom: 0.8rem;
}

@media (max-width: 760px) {
    .service-block { grid-template-columns: 1fr; gap: 1.2rem; }
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.tag-list li {
    font-family: var(--font-display);
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-soft);
    background: var(--bg-raise);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.42rem 0.95rem;
}

/* ---------- Process / steps ---------- */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.2rem;
    counter-reset: step;
}

.step {
    position: relative;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.7rem 1.5rem;
}

.step::before {
    counter-increment: step;
    content: "0" counter(step);
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: block;
    margin-bottom: 0.9rem;
}

.step h3 { font-size: 1.12rem; margin-bottom: 0.5rem; }
.step p { font-size: 0.94rem; color: var(--text-soft); margin: 0; }

/* ---------- Founder ---------- */
.founder {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
}

@media (max-width: 820px) {
    .founder { grid-template-columns: 1fr; }
}

.founder-mark {
    position: relative;
    aspect-ratio: 1;
    max-width: 380px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background:
        radial-gradient(circle at 70% 25%, rgba(128, 80, 240, 0.28), transparent 55%),
        radial-gradient(circle at 20% 80%, rgba(94, 139, 255, 0.18), transparent 55%),
        var(--bg-raise);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.founder-mark::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 80%);
    mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 80%);
}

.founder-mark .mark {
    font-family: var(--font-display);
    font-size: clamp(4rem, 9vw, 6.5rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.quote {
    border-left: 3px solid;
    border-image: var(--gradient) 1;
    padding-left: 1.2rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text);
    margin: 1.8rem 0 0;
}

/* ---------- Accordion (native details) ---------- */
.accordion { border-top: 1px solid var(--line); }

.accordion details { border-bottom: 1px solid var(--line); }

.accordion summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem 0.2rem;
    cursor: pointer;
    list-style: none;
    font-family: var(--font-display);
    font-size: 1.12rem;
    font-weight: 600;
    transition: color 0.2s ease;
}

.accordion summary::-webkit-details-marker { display: none; }

.accordion summary:hover { color: var(--accent-soft); }

.accordion summary::after {
    content: "+";
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--accent-soft);
    transition: transform 0.3s var(--ease);
    flex-shrink: 0;
}

.accordion details[open] summary::after { transform: rotate(45deg); }

.accordion .acc-body {
    padding: 0 0.2rem 1.5rem;
    color: var(--text-soft);
    max-width: 52rem;
}

.accordion .acc-body p:last-child { margin-bottom: 0; }

/* ---------- CTA band ---------- */
.cta-band {
    position: relative;
    border-radius: calc(var(--radius) + 6px);
    border: 1px solid rgba(128, 80, 240, 0.35);
    background:
        radial-gradient(circle at 85% 0%, rgba(128, 80, 240, 0.3), transparent 55%),
        radial-gradient(circle at 10% 100%, rgba(94, 139, 255, 0.18), transparent 55%),
        var(--bg-raise);
    padding: clamp(2.5rem, 6vw, 4.5rem);
    text-align: center;
    overflow: hidden;
}

.cta-band h2 { max-width: 24ch; margin-inline: auto; }

.cta-band p {
    color: var(--text-soft);
    max-width: 36rem;
    margin: 0 auto 2rem;
}

.cta-band .btn-row { justify-content: center; }

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
}

@media (max-width: 820px) {
    .contact-grid { grid-template-columns: 1fr; }
}

.info-list {
    display: grid;
    gap: 1rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.info-list li {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 1.2rem 1.4rem;
}

.info-list .label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 0.35rem;
}

.info-list a { color: var(--accent-soft); }
.info-list a:hover { text-decoration: underline; }

.check-list {
    padding: 0;
    margin: 0 0 2rem;
    list-style: none;
    display: grid;
    gap: 0.9rem;
}

.check-list li {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    color: var(--text-soft);
}

.check-list li::before {
    content: "";
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 0.25rem;
    border-radius: 50%;
    background:
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>') center / 11px no-repeat,
        var(--accent);
}

/* ---------- Work / portfolio ---------- */
.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.filter-row button {
    font-family: var(--font-display);
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-soft);
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 0.5rem 1.15rem;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 100ms ease-out;
}

.filter-row button:hover { color: var(--text); border-color: var(--accent); }
.filter-row button:active { transform: scale(0.96); }

.filter-row button.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.2rem;
}

.work-card {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.work-card.hidden { display: none; }

.work-num {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.work-meta {
    font-family: var(--font-display);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.work-card h3 { margin-bottom: 0.2rem; }

.work-card p { flex: 1; }

.work-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.9rem;
    font-family: var(--font-display);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--accent-soft);
}

.work-link:hover { text-decoration: underline; }

.work-link.private {
    color: var(--text-faint);
    cursor: default;
}

/* ---------- 404 ---------- */
.error-page {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
}

.error-code {
    font-family: var(--font-display);
    font-size: clamp(6rem, 20vw, 11rem);
    font-weight: 700;
    line-height: 1;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--line);
    background: var(--bg-soft);
    padding: clamp(3rem, 6vw, 4.5rem) 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    margin-bottom: 3rem;
}

@media (max-width: 760px) {
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

.site-footer .brand { font-size: 1.3rem; }

.footer-tagline {
    color: var(--text-soft);
    max-width: 22rem;
    margin-top: 0.9rem;
    font-size: 0.95rem;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 1.1rem;
}

.footer-col nav,
.footer-col .footer-contact {
    display: grid;
    gap: 0.7rem;
}

.footer-col a,
.footer-col p {
    color: var(--text-soft);
    font-size: 0.95rem;
    margin: 0;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    border-top: 1px solid var(--line);
    padding-top: 1.6rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: space-between;
    font-size: 0.86rem;
    color: var(--text-faint);
}

/* ---------- Homepage scroll story ---------- */
.story-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1.4s ease;
}

.story-canvas.scene-ready { opacity: 1; }

.story-content { position: relative; z-index: 1; }

.scroll-cue {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    margin-top: 3rem;
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.scroll-cue .cue-arrow {
    display: inline-flex;
    width: 34px;
    height: 34px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    color: var(--accent-soft);
    animation: cue-bounce 2.2s ease-in-out infinite;
}

@keyframes cue-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(7px); }
}

.chapter {
    position: relative;
    min-height: 175vh;
}

.chapter-panel {
    position: sticky;
    top: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.chapter-card {
    max-width: 31rem;
    background: rgba(10, 10, 18, 0.55);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--line);
    /* bright top edge = light catching the material (apple-design §12) */
    border-top-color: rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    padding: clamp(1.8rem, 3vw, 2.6rem);
}

.chapter.right .chapter-card { margin-left: auto; }

.chapter-step {
    display: inline-flex;
    align-items: baseline;
    gap: 0.7rem;
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: 1rem;
}

.chapter-step .n {
    font-size: 2rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

.chapter-step .l {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.chapter-card h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }

.chapter-card p { color: var(--text-soft); margin-bottom: 0; }

.chapter-card .proof {
    margin-top: 1.3rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--line);
    font-size: 0.92rem;
    color: var(--text-faint);
    font-style: italic;
}

.chapter-card .tag-list { margin-top: 1.3rem; }

@media (max-width: 760px) {
    .chapter { min-height: 150vh; }
    .chapter.right .chapter-card { margin-left: 0; }
    .chapter-panel { align-items: flex-end; padding-bottom: 12vh; }
}

/* chapter progress rail */
.story-rail {
    position: fixed;
    right: 26px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 60;
    display: grid;
    gap: 16px;
}

.story-rail a {
    position: relative;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--line-strong);
    transition: background 0.3s ease, transform 0.3s var(--ease), box-shadow 0.3s ease;
}

.story-rail a:hover { background: var(--accent-soft); }

.story-rail a.active {
    background: var(--accent);
    transform: scale(1.4);
    box-shadow: 0 0 14px 2px var(--accent-glow);
}

.story-rail a span {
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    font-family: var(--font-display);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-soft);
    background: rgba(10, 10, 18, 0.85);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.25rem 0.7rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.story-rail a:hover span,
.story-rail a.active span { opacity: 1; }

@media (max-width: 1100px) {
    .story-rail { display: none; }
}

/* outro stat chips */
.stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin-top: 1.8rem;
}

.stat-row span {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-soft);
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
}

/* ---------- Landing v2 (staging) ---------- */
.landing-hero { min-height: 100vh; display: flex; align-items: center; padding-block: 0; }

.landing-sect {
    min-height: 140vh;
    display: flex;
    align-items: center;
}

.landing-copy {
    max-width: 34rem;
    background: rgba(10, 10, 18, 0.5);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--line);
    border-top-color: rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    padding: clamp(1.8rem, 3vw, 2.6rem);
}

.landing-sect.right .landing-copy { margin-left: auto; }

.landing-cta { position: relative; z-index: 1; }

@media (max-width: 760px) {
    .landing-sect { min-height: 120vh; }
    .landing-sect.right .landing-copy { margin-left: 0; }
}

@media (prefers-reduced-transparency: reduce) {
    .landing-copy { -webkit-backdrop-filter: none; backdrop-filter: none; background: #0b0b13; }
}

/* ---------- Landing v2: homepage furniture ---------- */
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 2rem;
    margin-top: 2.4rem;
    padding-top: 1.6rem;
    border-top: 1px solid var(--line);
}

.hero-stats div { font-family: var(--font-display); }
.hero-stats .n { font-size: 1.25rem; font-weight: 700; display: block; }
.hero-stats .l { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }

/* ecosystem bento grid */
.eco-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
}

.eco-grid .card.wide { grid-column: span 2; }

@media (max-width: 980px) {
    .eco-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
    .eco-grid { grid-template-columns: 1fr; }
    .eco-grid .card.wide { grid-column: span 1; }
}

/* interactive showcase with scene tabs */
.showcase {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: center;
}

@media (max-width: 900px) {
    .showcase { grid-template-columns: 1fr; }
}

.scene-tabs {
    display: grid;
    gap: 0.7rem;
}

.scene-tabs button {
    text-align: left;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 1rem 1.2rem;
    cursor: pointer;
    color: var(--text-soft);
    font-family: var(--font-body);
    transition: border-color 0.25s ease, background 0.25s ease, transform 100ms ease-out;
}

.scene-tabs button:active { transform: scale(0.985); }

.scene-tabs button .t {
    display: block;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.02rem;
    color: var(--text);
    margin-bottom: 0.15rem;
}

.scene-tabs button .d { font-size: 0.88rem; }

.scene-tabs button.active {
    border-color: var(--accent);
    background: rgba(128, 80, 240, 0.08);
    box-shadow: 0 0 24px -10px var(--accent-glow);
}

/* ---------- Landing v2: before/after slider cards ---------- */
.ba-card {
    position: relative;
    aspect-ratio: 1344 / 768;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    border-top-color: rgba(255, 255, 255, 0.16);
    overflow: hidden;
    cursor: ew-resize;
    touch-action: pan-y;
    user-select: none;
    -webkit-user-select: none;
    box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
}

.ba-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.ba-after { clip-path: inset(0 100% 0 0); }

.ba-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 3px;
    transform: translateX(-50%);
    background: var(--gradient);
    box-shadow: 0 0 20px 3px var(--accent-glow);
    z-index: 3;
}

.ba-handle::after {
    content: "\2194";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(10, 10, 18, 0.85);
    border: 1px solid var(--accent);
    color: #fff;
    font-size: 1.1rem;
    transition: transform 0.25s var(--ease);
}

.ba-card:hover .ba-handle::after,
.ba-card.dragging .ba-handle::after { transform: translate(-50%, -50%) scale(1.12); }

.ba-handle:focus-visible { outline: none; }
.ba-handle:focus-visible::after { box-shadow: 0 0 0 3px var(--accent-glow); }

.ba-tag {
    position: absolute;
    top: 14px;
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    z-index: 2;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.ba-tag-before { left: 14px; background: rgba(10, 10, 18, 0.75); color: var(--text-soft); }
.ba-tag-after { right: 14px; background: var(--accent); color: #fff; }

.ba-hint {
    margin-top: 0.8rem;
    font-size: 0.85rem;
    color: var(--text-faint);
    text-align: center;
}

/* two-column transformation sections */
.transform-sect {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
    padding-block: clamp(2.5rem, 5vw, 4rem);
}

.transform-sect.flip .ba-wrap { order: 2; }

@media (max-width: 860px) {
    .transform-sect { grid-template-columns: 1fr; }
    .transform-sect.flip .ba-wrap { order: 0; }
}

/* problem vignette grid */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.2rem;
}

.problem-card {
    border-radius: var(--radius);
    border: 1px solid var(--line);
    overflow: hidden;
    background: var(--card);
}

.problem-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    display: block;
    filter: saturate(0.8);
}

.problem-card .pc-body { padding: 1.1rem 1.3rem 1.3rem; }
.problem-card h3 { font-size: 1.05rem; margin-bottom: 0.3rem; }
.problem-card p { font-size: 0.92rem; color: var(--text-soft); margin: 0; }

/* the turn band */
.turn-band {
    position: relative;
    text-align: center;
    padding-block: clamp(4rem, 8vw, 6rem);
}

.turn-band::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    background: var(--gradient);
    opacity: 0.5;
}

.turn-band .inner {
    position: relative;
    display: inline-block;
    background: var(--bg);
    padding: 1.2rem 2rem;
}

.turn-band h2 { max-width: 24ch; margin-inline: auto; }
.turn-band p { color: var(--text-soft); max-width: 36rem; margin: 0 auto; }

/* ---------- Landing v2 (legacy film classes, kept for reference) ---------- */
.playhead {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 120;
    background: rgba(255, 255, 255, 0.07);
}

.playhead .fill {
    height: 100%;
    width: 0;
    background: var(--gradient);
    transition: width 80ms linear;
}

.film-act { position: relative; }

.film-act .stage {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: hidden;
    background: var(--bg);
}

.stage .scene-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stage .img-after { clip-path: inset(0 100% 0 0); }

.stage .shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(7, 7, 13, 0.55), rgba(7, 7, 13, 0.15) 35%, rgba(7, 7, 13, 0.65));
    pointer-events: none;
}

.film-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: clamp(2rem, 7vh, 4.5rem);
    z-index: 5;
}

.film-caption .cap-card {
    max-width: 34rem;
    background: rgba(10, 10, 18, 0.62);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border: 1px solid var(--line);
    border-top-color: rgba(255, 255, 255, 0.16);
    border-radius: var(--radius);
    padding: 1.4rem 1.7rem;
}

.cap-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    margin-bottom: 0.7rem;
}

.cap-tag.before { background: rgba(255, 255, 255, 0.1); color: var(--text-soft); }
.cap-tag.after { background: var(--accent); color: #fff; }

.cap-card h3 { font-size: clamp(1.25rem, 2.4vw, 1.7rem); margin-bottom: 0.3rem; }
.cap-card p { color: var(--text-soft); margin: 0; font-size: 0.98rem; }

/* vignettes */
.vignette { position: absolute; inset: 0; opacity: 0; }

/* the turn */
.turn-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2vw;
    transform: translateX(-50%) scaleY(0);
    transform-origin: center;
    background: var(--gradient);
    opacity: 0;
    pointer-events: none;
    z-index: 3;
}

.turn-copy {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 6;
    opacity: 0;
    padding-inline: var(--gutter);
}

.turn-copy h2 {
    max-width: 22ch;
    text-shadow: 0 2px 30px rgba(0, 0, 0, 0.8);
}

/* wipes */
.wipe-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 3px;
    transform: translateX(-50%);
    background: var(--gradient);
    box-shadow: 0 0 24px 4px var(--accent-glow);
    z-index: 4;
    opacity: 0;
    pointer-events: none;
}

.cap-before, .cap-after { transition: none; }
.film-caption .cap-after { position: absolute; left: 0; right: 0; bottom: 0; opacity: 0; }
.film-caption { position: absolute; }
.film-caption .cap-stack { position: relative; }

/* act heights give the scrub room */
.act-vignettes { height: 320vh; }
.act-turn { height: 240vh; }
.act-wipe { height: 260vh; }

@media (prefers-reduced-motion: reduce) {
    .act-vignettes, .act-turn, .act-wipe { height: auto; }
    .film-act .stage { position: relative; height: 70vh; }
    .vignette { position: relative; opacity: 1 !important; height: 70vh; }
    .act-vignettes .stage { height: auto; }
    .stage .img-after { clip-path: inset(0 50% 0 0) !important; }
    .turn-copy, .cap-after { opacity: 1 !important; }
}

@media (prefers-reduced-transparency: reduce) {
    .film-caption .cap-card { -webkit-backdrop-filter: none; backdrop-filter: none; background: #0b0b13; }
}

/* ---------- Scroll reveal ---------- */
.js .reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.js .reveal.in {
    opacity: 1;
    transform: none;
}

.js .reveal[data-delay="1"] { transition-delay: 0.08s; }
.js .reveal[data-delay="2"] { transition-delay: 0.16s; }
.js .reveal[data-delay="3"] { transition-delay: 0.24s; }

/* translucency and contrast preferences (apple-design §14) */
@media (prefers-reduced-transparency: reduce) {
    .site-header.scrolled,
    .site-nav,
    .chapter-card,
    .story-rail a span {
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
        background: #0b0b13;
    }

    .cursor-glow { display: none; }
}

@media (prefers-contrast: more) {
    :root {
        --line: rgba(255, 255, 255, 0.25);
        --line-strong: rgba(255, 255, 255, 0.4);
        --text-soft: #c9c9d8;
        --text-faint: #9d9db2;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    .js .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .orb-1, .orb-2 { animation: none; }

    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ---------- Utility ---------- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 200;
    background: var(--accent);
    color: #fff;
    padding: 0.7rem 1.2rem;
    border-radius: 0 0 10px 0;
}

.skip-link:focus { left: 0; }