/* =================================================================
   FIDORA Labs — v2 / 2026
   Editorial. Corporate. Engineered.
   Black-black for dark. White-white for light.
   Contrast lives in the imagery, not in decorative gradients.
   ================================================================= */

/* ---------- Tokens -------------------------------------------------- */
:root {
    /* Dark (default) */
    --bg:           #000000;
    --bg-elev:      #0a0a0a;
    --bg-elev-2:    #131313;
    --line:         rgba(255,255,255,0.10);
    --line-2:       rgba(255,255,255,0.18);
    --fg:           #ffffff;
    --fg-mute:      #9a9a9a;
    --fg-soft:      #6a6a6a;
    --accent:       #ffffff;
    --accent-ink:   #000000;
    --shadow:       0 30px 80px -30px rgba(0,0,0,0.8);

    --ff-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    --ff-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

    /* Type scale */
    --fs-mono:      11px;
    --fs-body:      16px;
    --fs-lede:      19px;
    --fs-h3:        clamp(1.4rem, 1.1rem + 1vw, 1.875rem);
    --fs-h2:        clamp(2.2rem, 1.6rem + 3vw, 4.25rem);
    --fs-hero:      clamp(2.8rem, 2rem + 5.5vw, 7.5rem);

    /* Motion */
    --ease:         cubic-bezier(0.22, 1, 0.36, 1);
    --dur:          600ms;

    /* Layout */
    --pad-x:        clamp(20px, 5vw, 64px);
    --maxw:         1440px;
}

html[data-theme="light"] {
    --bg:           #ffffff;
    --bg-elev:      #f6f6f6;
    --bg-elev-2:    #ececec;
    --line:         rgba(0,0,0,0.10);
    --line-2:       rgba(0,0,0,0.20);
    --fg:           #000000;
    --fg-mute:      #555555;
    --fg-soft:      #888888;
    --accent:       #000000;
    --accent-ink:   #ffffff;
    --shadow:       0 30px 80px -30px rgba(0,0,0,0.18);
}

/* ---------- Reset --------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

body {
    font-family: var(--ff-sans);
    font-size: var(--fs-body);
    color: var(--fg);
    background: var(--bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    transition: background-color .4s var(--ease), color .4s var(--ease);
}

.mono { font-family: var(--ff-mono); font-size: var(--fs-mono); letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- Ambient layers ----------------------------------------- */
.bg-grid {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
    opacity: .35;
}
.bg-noise {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    opacity: .035; mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.7'/></svg>");
}
html[data-theme="light"] .bg-noise { mix-blend-mode: multiply; opacity: .05; }

/* ---------- NAV ----------------------------------------------------- */
.nav {
    position: fixed; inset: 0 0 auto 0; z-index: 50;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 32px;
    padding: 18px var(--pad-x);
    transition: background-color .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
    border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
    background: color-mix(in srgb, var(--bg) 70%, transparent);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom-color: var(--line);
}

.nav__brand { display: inline-flex; align-items: center; gap: 12px; }
.nav__logo { width: 28px; height: 28px; object-fit: contain; }
.nav__logo--light { display: none; }
html[data-theme="light"] .nav__logo--dark { display: none; }
html[data-theme="light"] .nav__logo--light { display: block; }

.nav__wordmark {
    font-weight: 800;
    letter-spacing: 0.02em;
    font-size: 15px;
}
.nav__wordmark-dot { color: var(--fg-soft); }

.nav__links {
    display: flex; gap: 8px; justify-self: center;
}
.nav__links a {
    position: relative;
    padding: 10px 16px;
    font-size: 14px;
    color: var(--fg-mute);
    transition: color .25s var(--ease);
}
.nav__links a::after {
    content: "";
    position: absolute; left: 16px; right: 16px; bottom: 6px;
    height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left;
    transition: transform .35s var(--ease);
}
.nav__links a:hover { color: var(--fg); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: 12px; }

/* lang */
.lang { position: relative; }
.lang__btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 12px; letter-spacing: .06em;
    color: var(--fg-mute);
}
.lang__btn:hover { color: var(--fg); border-color: var(--line-2); }
.lang__menu {
    position: absolute; right: 0; top: calc(100% + 8px);
    min-width: 180px;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 6px;
    opacity: 0; pointer-events: none; transform: translateY(-6px);
    transition: opacity .2s, transform .2s;
}
.lang.is-open .lang__menu { opacity: 1; pointer-events: auto; transform: translateY(0); }
.lang__menu a {
    display: block; padding: 10px 12px; border-radius: 8px;
    font-size: 13px; color: var(--fg-mute);
}
.lang__menu a:hover { background: var(--bg-elev-2); color: var(--fg); }
.lang__menu a[aria-current="true"] { color: var(--fg); }

/* theme */
.theme {
    width: 38px; height: 38px;
    border: 1px solid var(--line); border-radius: 999px;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--fg-mute);
    transition: color .25s, border-color .25s;
}
.theme:hover { color: var(--fg); border-color: var(--line-2); }
.theme__sun { display: none; }
.theme__moon { display: block; }
html[data-theme="light"] .theme__sun { display: block; }
html[data-theme="light"] .theme__moon { display: none; }

/* burger */
.nav__burger { display: none; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 999px; flex-direction: column; gap: 4px; align-items: center; justify-content: center; }
.nav__burger span { width: 14px; height: 1px; background: currentColor; }

/* ---------- Buttons ------------------------------------------------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 22px;
    font-size: 14px; font-weight: 500;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: transform .35s var(--ease), background-color .25s, color .25s, border-color .25s;
    white-space: nowrap;
}
.btn svg { transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
}
.btn--primary:hover { transform: translateY(-1px); }
.btn--ghost {
    color: var(--fg);
    border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--fg); }
.btn--sm { padding: 10px 16px; font-size: 13px; }
.btn--block { width: 100%; justify-content: center; }

/* ---------- Section primitives ------------------------------------- */
.section__head {
    max-width: 880px;
    margin: 0 auto 64px;
    padding: 0 var(--pad-x);
    text-align: center;
}
.section__index {
    display: inline-block;
    color: var(--fg-soft);
    margin-bottom: 24px;
}
.section__title {
    font-size: var(--fs-h2);
    line-height: 0.98;
    letter-spacing: -0.03em;
    font-weight: 700;
    margin: 0 0 24px;
}
.section__title em {
    font-style: italic;
    font-weight: 400;
    color: var(--fg-mute);
}
.section__lede {
    font-size: var(--fs-lede);
    line-height: 1.5;
    color: var(--fg-mute);
    margin: 0;
    max-width: 640px;
    margin-inline: auto;
}

/* ---------- HERO ---------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 140px var(--pad-x) 120px;
    display: grid;
    align-items: center;
    overflow: hidden;
    isolation: isolate;
}
.hero__media {
    position: absolute; inset: 0; z-index: -1;
}
.hero__media img {
    width: 100%; height: 100%; object-fit: cover;
    filter: grayscale(0.4) contrast(1.05) brightness(0.55);
    will-change: transform;
}
/* Light theme: invert the image so it stays dark-on-bright contrast.
   Even on a white site, the hero stays cinematic. */
html[data-theme="light"] .hero {
    background: #000; /* the hero stays dark on the light site, on purpose */
}
html[data-theme="light"] .hero__media img {
    filter: grayscale(0.4) contrast(1.05) brightness(0.55);
}
html[data-theme="light"] .hero__inner,
html[data-theme="light"] .hero__title,
html[data-theme="light"] .hero__lede,
html[data-theme="light"] .hero__eyebrow,
html[data-theme="light"] .hero__stats dt,
html[data-theme="light"] .hero__stats dd,
html[data-theme="light"] .hero__scroll {
    color: #fff;
}
html[data-theme="light"] .hero__lede { color: rgba(255,255,255,.78); }
html[data-theme="light"] .hero__title em { color: rgba(255,255,255,.55); }
html[data-theme="light"] .hero__lede .u { color: #fff; border-bottom-color: rgba(255,255,255,.28); }
html[data-theme="light"] .hero__stats { border-top-color: rgba(255,255,255,.15); }
html[data-theme="light"] .hero__stats dt { color: rgba(255,255,255,.5); }
html[data-theme="light"] .hero .btn--primary { background: #fff; color: #000; border-color: #fff; }
html[data-theme="light"] .hero .btn--ghost { color: #fff; border-color: rgba(255,255,255,.4); }
html[data-theme="light"] .hero .btn--ghost:hover { border-color: #fff; }

.hero__veil {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(255,255,255,.08), transparent 50%),
        linear-gradient(180deg, rgba(0,0,0,.4) 0%, rgba(0,0,0,.55) 50%, var(--bg) 100%);
}
html[data-theme="light"] .hero__veil {
    background:
        radial-gradient(ellipse at 80% 20%, rgba(255,255,255,.08), transparent 50%),
        linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.55) 60%, var(--bg) 100%);
}
.hero__scan {
    position: absolute; inset: 0; pointer-events: none;
    background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(255,255,255,.025) 3px 4px);
    mix-blend-mode: overlay;
}

.hero__inner {
    max-width: var(--maxw);
    width: 100%;
    margin: 0 auto;
    position: relative;
}

.hero__eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    margin-bottom: 36px;
    color: var(--fg-mute);
}
.hero__title {
    font-size: var(--fs-hero);
    line-height: 0.92;
    letter-spacing: -0.045em;
    font-weight: 800;
    margin: 0 0 36px;
    max-width: 16ch;
}
.hero__title em {
    font-style: italic;
    font-weight: 300;
    color: var(--fg-mute);
}
.hero__title .line {
    display: block;
    overflow: hidden;
}
.hero__title [data-split] {
    display: inline-block;
    transform: translateY(110%);
    animation: rise .9s var(--ease) forwards;
}
.hero__title .line:nth-child(2) [data-split] { animation-delay: .12s; }
@keyframes rise { to { transform: translateY(0); } }

.hero__lede {
    max-width: 540px;
    color: var(--fg-mute);
    font-size: var(--fs-lede);
    line-height: 1.5;
    margin: 0 0 40px;
    opacity: 0; animation: fade .8s .4s var(--ease) forwards;
}
.hero__lede .u { color: var(--fg); border-bottom: 1px solid var(--line-2); padding-bottom: 1px; }
@keyframes fade { to { opacity: 1; } }

.hero__cta {
    display: flex; flex-wrap: wrap; gap: 14px;
    opacity: 0; animation: fade .8s .55s var(--ease) forwards;
}

.hero__stats {
    margin-top: 72px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0,1fr));
    gap: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    max-width: 880px;
    opacity: 0; animation: fade .8s .7s var(--ease) forwards;
}
.hero__stats div { display: flex; flex-direction: column; gap: 6px; }
.hero__stats dt { color: var(--fg-soft); font-size: 10px; }
.hero__stats dd { margin: 0; color: var(--fg); font-size: 18px; font-weight: 500; letter-spacing: 0; text-transform: none; font-family: var(--ff-sans); }

.hero__scroll {
    position: absolute;
    right: var(--pad-x);
    bottom: 140px;
    display: flex; align-items: center; gap: 12px;
    color: var(--fg-mute); font-family: var(--ff-mono); font-size: 10px; letter-spacing: .15em;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
}
.hero__scroll-line {
    display: block; width: 1px; height: 60px;
    background: linear-gradient(transparent, var(--fg-mute));
    animation: scrollLine 2.4s infinite;
}
@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- BAND (marquee) ----------------------------------------- */
.band {
    border-block: 1px solid var(--line);
    overflow: hidden;
    padding: 22px 0;
    background: var(--bg);
    position: relative; z-index: 1;
}
.band__track {
    display: inline-flex; align-items: center; gap: 40px;
    white-space: nowrap;
    animation: marquee 38s linear infinite;
    font-family: var(--ff-mono);
    font-size: 13px;
    letter-spacing: .14em;
    color: var(--fg);
    text-transform: uppercase;
}
.band__sep { color: var(--fg-soft); }
@keyframes marquee {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ---------- INFRASTRUCTURE STACK -----------------------------------
   The section is tall (pin track). The .stack__scene is sticky inside
   it, so the stack stays centred on screen while the user scrolls
   through. JS computes a 0..1 progress over the pin track and reveals
   layers one by one. Slow, deliberate, cinematic.
   ------------------------------------------------------------------ */
.stack {
    padding: 120px 0 0;
    position: relative;
    z-index: 1;
}
.stack__pin {
    position: relative;
    /* The taller this is, the slower the layers reveal.
       ~ N+2 viewports gives room for each layer to breathe. */
    height: 360vh;
}
.stack__scene {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto;
    max-width: 1200px;
    padding: 0 var(--pad-x);
    perspective: 2400px;
    perspective-origin: 50% 45%;
}
.stack__layers {
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(34deg) rotateZ(-14deg);
    transition: transform 1.2s var(--ease);
    width: min(900px, 92%);
    height: 520px;
}
.stack__layer {
    position: absolute;
    inset: 0;
    border: 1px solid var(--line-2);
    background:
        radial-gradient(120% 80% at 100% 0%, rgba(255,255,255,0.06), transparent 60%),
        linear-gradient(150deg, var(--bg-elev-2) 0%, var(--bg-elev) 55%, var(--bg) 100%);
    padding: 36px 40px;
    border-radius: 10px;
    display: flex; flex-direction: column; justify-content: space-between;
    transform-style: preserve-3d;
    transition: opacity .35s var(--ease), border-color .4s;
    box-shadow:
        0 30px 80px -20px rgba(0,0,0,0.6),
        0 1px 0 rgba(255,255,255,0.04) inset;
    will-change: transform, opacity;
    overflow: hidden;
}
html[data-theme="light"] .stack__layer {
    background:
        radial-gradient(120% 80% at 100% 0%, rgba(0,0,0,0.04), transparent 60%),
        linear-gradient(150deg, #ffffff 0%, var(--bg-elev) 55%, var(--bg-elev-2) 100%);
    box-shadow:
        0 30px 80px -25px rgba(0,0,0,0.2),
        0 1px 0 rgba(0,0,0,0.04) inset;
}

/* Subtle decorative scanline on each card */
.stack__layer::before {
    content: "";
    position: absolute; inset: 0;
    background:
        repeating-linear-gradient(0deg, transparent 0 2px, rgba(255,255,255,0.02) 2px 3px);
    pointer-events: none;
    mix-blend-mode: overlay;
}
html[data-theme="light"] .stack__layer::before { background: repeating-linear-gradient(0deg, transparent 0 2px, rgba(0,0,0,0.02) 2px 3px); }

/* Corner tick marks for that engineered/blueprint feel */
.stack__layer::after {
    content: "";
    position: absolute; left: 12px; top: 12px; right: 12px; bottom: 12px;
    border: 1px dashed var(--line);
    border-radius: 6px;
    pointer-events: none;
    opacity: .35;
}

/* Initial 3D offsets — uniform, gentle depth so all cards read at the
   same visual size. The illusion of stacking comes from shadows + the
   slight rotation of .stack__layers, not from popping the front card
   forward (which made it bigger via perspective and overflow text). */
.stack__layer[data-layer="0"] { transform: translate3d(0, 0, 0px); }
.stack__layer[data-layer="1"] { transform: translate3d(0, 0, -20px); }
.stack__layer[data-layer="2"] { transform: translate3d(0, 0, -40px); }
.stack__layer[data-layer="3"] { transform: translate3d(0, 0, -60px); }

.stack__layer .mono {
    color: var(--fg);
    opacity: .55;
    letter-spacing: .18em;
    font-size: 11px;
    display: inline-flex; align-items: center; gap: 10px;
}
.stack__layer .mono::before {
    content: "";
    width: 22px; height: 1px; background: currentColor;
}
.stack__layer h3 {
    margin: 16px 0 0;
    font-size: clamp(1.4rem, 1rem + 1.1vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.015em;
    color: var(--fg);
    line-height: 1.2;
    max-width: 28ch;
}

/* In-view: settle nicely */
.stack__scene.is-active .stack__layers {
    transform: rotateX(28deg) rotateZ(-12deg);
}

/* Progress rail (numbered chapters, vertical) ----------------------- */
.stack__progress {
    position: absolute;
    right: max(var(--pad-x), 28px);
    top: 50%;
    transform: translateY(-50%);
    display: flex; flex-direction: column;
    gap: 6px;
    z-index: 2;
    pointer-events: none;
    margin: 0; padding: 0;
    list-style: none;
}
.stack__progress li {
    display: grid;
    grid-template-columns: 28px 1fr;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-top: 1px solid var(--line);
    color: var(--fg-soft);
    transition: color .45s var(--ease);
    min-width: 220px;
}
.stack__progress li:last-child { border-bottom: 1px solid var(--line); }
.stack__progress-num {
    font-size: 11px;
    letter-spacing: .12em;
    color: inherit;
    font-variant-numeric: tabular-nums;
    position: relative;
    padding-left: 0;
}
.stack__progress-label {
    font-size: 10px;
    letter-spacing: .18em;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
/* Active state: bright fg + a thin horizontal tick on the left of the number */
.stack__progress li.is-active {
    color: var(--fg);
}
.stack__progress li.is-active .stack__progress-num::before {
    content: "";
    position: absolute;
    left: -18px; top: 50%;
    width: 12px; height: 1px;
    background: var(--fg);
}

/* ---------- PRODUCTS ----------------------------------------------- */
.products {
    padding: 120px 0;
    position: relative; z-index: 1;
}
.products__grid {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}

.product {
    background: var(--bg);
    padding: 40px 36px 36px;
    display: flex; flex-direction: column;
    min-height: 460px;
    position: relative;
    transition: background-color .4s var(--ease);
}
.product:hover { background: var(--bg-elev); }
.product--featured { background: var(--bg-elev); }
.product--featured:hover { background: var(--bg-elev-2); }

.product__head { margin-bottom: 28px; position: relative; }
.product__tag { color: var(--fg-soft); display: block; margin-bottom: 14px; }
.product__pill {
    position: absolute; top: 0; right: 0;
    font-family: var(--ff-mono);
    font-size: 10px;
    letter-spacing: .12em;
    text-transform: uppercase;
    padding: 5px 10px;
    border: 1px solid var(--line-2);
    border-radius: 999px;
    color: var(--fg);
}
.product__name {
    font-size: clamp(1.6rem, 1.2rem + 1vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    line-height: 1.05;
}
.product__desc {
    color: var(--fg-mute);
    margin: 0 0 24px;
    line-height: 1.55;
}
.product__list {
    margin: 0 0 32px;
    display: grid;
    gap: 10px;
}
.product__list li {
    display: flex; align-items: center; gap: 10px;
    font-size: 14px;
    color: var(--fg);
    padding: 8px 0;
    border-bottom: 1px dashed var(--line);
}
.product__list li:last-child { border-bottom: 0; }
.product__list li::before {
    content: ""; width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--fg);
    flex-shrink: 0;
}

.product__cta {
    margin-top: auto;
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--ff-mono); font-size: 12px;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--fg);
    padding-top: 20px; border-top: 1px solid var(--line);
}
.product__cta i {
    display: inline-block; width: 28px; height: 1px; background: currentColor;
    position: relative;
    transition: width .35s var(--ease);
}
.product__cta i::after {
    content: ""; position: absolute; right: 0; top: -3px;
    width: 7px; height: 7px;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    transform: rotate(45deg);
}
.product__cta:hover i { width: 48px; }

/* ---------- MANIFESTO --------------------------------------------- */
.manifesto {
    position: relative;
    padding: 0 var(--pad-x);
    background: var(--bg);
    z-index: 1;
}
.manifesto__sticky {
    min-height: 240vh;
    position: relative;
}
.manifesto__title {
    position: sticky; top: 0;
    height: 100vh;
    display: flex; flex-direction: column; justify-content: center;
    gap: 24px;
    font-size: clamp(1.6rem, 1.2rem + 2vw, 3rem);
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
    max-width: 1000px;
    margin: 0 auto;
}
.manifesto__title span {
    display: block;
    color: var(--fg-soft);
    transition: color .6s var(--ease);
}
.manifesto__title span.is-active { color: var(--fg); }
.manifesto__title em { font-style: italic; font-weight: 300; color: var(--fg); }
.manifesto .section__index {
    position: sticky; top: 100px;
    display: inline-block;
}

/* ---------- METRICS ----------------------------------------------- */
.metrics {
    padding: 80px 0;
    border-block: 1px solid var(--line);
    background: var(--bg);
    position: relative; z-index: 1;
}
.metrics__grid {
    max-width: var(--maxw); margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.metric {
    display: flex; flex-direction: column; gap: 12px;
    padding: 16px 0;
}
.metric__value {
    font-size: clamp(2.4rem, 1.8rem + 3.2vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--fg);
    display: inline-flex;
    align-items: baseline;
}
.metric__value i {
    font-style: normal;
    font-size: 0.4em;
    color: var(--fg-mute);
    margin-left: 4px;
    font-weight: 500;
}
.metric__label { color: var(--fg-soft); }

/* ---------- CONTACT ----------------------------------------------- */
.contact {
    padding: 140px 0 160px;
    position: relative; z-index: 1;
}
.contact__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--pad-x);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.contact__copy .section__title { text-align: left; margin-top: 16px; }
.contact__copy .section__lede { margin-inline: 0; }
.contact__meta {
    margin-top: 40px;
    border-top: 1px solid var(--line);
    padding-top: 24px;
    display: grid; gap: 14px;
}
.contact__meta li {
    display: grid;
    grid-template-columns: 100px 1fr;
    align-items: center;
    font-size: 13px;
    letter-spacing: 0;
    text-transform: none;
    font-family: var(--ff-sans);
}
.contact__meta li > span:first-child,
.contact__meta li > a:first-child {
    font-family: var(--ff-mono);
    text-transform: uppercase;
    letter-spacing: .12em;
    font-size: 11px;
    color: var(--fg-soft);
}
.contact__meta a { color: var(--fg); border-bottom: 1px solid var(--line-2); }

.contact__form {
    background: var(--bg-elev);
    border: 1px solid var(--line);
    padding: 36px;
    display: grid; gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
    font-family: var(--ff-mono);
    font-size: 10px; letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--fg-soft);
}
.field input, .field textarea {
    background: var(--bg);
    border: 1px solid var(--line);
    color: var(--fg);
    padding: 14px 16px;
    font: inherit;
    font-size: 15px;
    border-radius: 4px;
    transition: border-color .25s;
    resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--fg); }
.field--check { flex-direction: row; align-items: flex-start; gap: 10px; font-size: 12px; color: var(--fg-mute); }
.field--check input { width: 16px; height: 16px; accent-color: var(--fg); margin-top: 2px; }
.contact__note { color: var(--fg-soft); min-height: 1em; margin: 0; }
.contact__note.is-ok { color: #00cc77; }
.contact__note.is-err { color: #ff5577; }

/* ---------- FOOTER ------------------------------------------------ */
.foot {
    border-top: 1px solid var(--line);
    background: var(--bg);
    position: relative; z-index: 1;
}
.foot__top {
    max-width: var(--maxw); margin: 0 auto;
    padding: 80px var(--pad-x) 64px;
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 64px;
}
.foot__brand img { width: 36px; height: 36px; margin-bottom: 16px; }
.foot__brand p { color: var(--fg-mute); max-width: 320px; margin: 0; }
.foot__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.foot__cols h4 {
    font-family: var(--ff-mono);
    font-size: 11px; letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--fg-soft);
    margin: 0 0 18px;
    font-weight: 500;
}
.foot__cols a {
    display: block;
    color: var(--fg-mute);
    padding: 6px 0;
    font-size: 14px;
    transition: color .25s;
}
.foot__cols a:hover { color: var(--fg); }

.foot__bottom {
    max-width: var(--maxw); margin: 0 auto;
    padding: 22px var(--pad-x);
    border-top: 1px solid var(--line);
    display: flex; justify-content: space-between; gap: 24px;
    color: var(--fg-soft);
    flex-wrap: wrap;
}

/* ---------- Reveal animations ------------------------------------ */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .9s var(--ease), transform .9s var(--ease);
}
[data-reveal].is-in {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ------------------------------------------- */
@media (max-width: 1024px) {
    .nav {
        /* On tablet/mobile we only need brand + actions; drop the centre column */
        grid-template-columns: auto 1fr;
    }
    .nav__links { display: none; }
    .nav__burger { display: inline-flex; }
    .nav__actions { justify-self: end; }
    .contact__inner { grid-template-columns: 1fr; gap: 48px; }
    .products__grid { grid-template-columns: 1fr; }
    .foot__top { grid-template-columns: 1fr; gap: 40px; }
    .metrics__grid { grid-template-columns: repeat(2, 1fr); }
    .hero__stats { grid-template-columns: repeat(2, 1fr); }
    .stack__layers { transform: rotateX(34deg) rotateZ(-14deg) scale(0.85); }
    /* Hide the verbose chapter rail on tablet — show a compact dot column instead */
    .stack__progress { min-width: 0; right: max(var(--pad-x), 16px); }
    .stack__progress li { grid-template-columns: 1fr; min-width: 0; }
    .stack__progress-label { display: none; }
}
@media (max-width: 640px) {
    .nav {
        grid-template-columns: auto auto;
        justify-content: space-between;
        gap: 12px;
        padding: 14px var(--pad-x);
    }
    .nav__brand { grid-column: 1; }
    .nav__actions { grid-column: 2; justify-self: end; gap: 8px; }
    .nav__wordmark { display: none; }
    /* On mobile we keep lang + theme + burger.
       The "Book a call" CTA in the nav is redundant (the hero already
       has a primary CTA and there's a contact section), so we hide it. */
    .nav__actions .btn[data-cta] { display: none; }

    /* HERO — fit everything within a single mobile viewport.
       Layout (top → bottom, no overlap):
         1. Eyebrow `FIDORA LABS · ...` pinned just under the nav.
         2. Free vertical space in the middle for the hero image (the face).
         3. Headline + lede + CTAs anchored to the bottom of the hero.
       Stats row dropped on mobile. */
    .hero {
        padding-top: 72px;   /* under the nav */
        padding-bottom: 32px;
        min-height: 100svh;  /* respect mobile browser chrome */
        /* Two rows: row 1 = eyebrow (auto height, top), row 2 = inner
           content (1fr, end-aligned). This guarantees no overlap. */
        display: grid;
        grid-template-rows: auto 1fr;
        align-items: stretch;
        row-gap: 0;
    }
    /* Take the eyebrow out of .hero__inner and into the hero grid as row 1
       so the headline below can never overlap it. */
    .hero__eyebrow {
        position: static;
        margin: 0;
        padding: 0;
        font-size: 10px;
        grid-row: 1;
        align-self: start;
        justify-self: start;
        max-width: 100%;
        overflow: hidden;
    }
    .hero__eyebrow .mono {
        font-size: 9px;
        letter-spacing: .12em;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: inline-block;
        max-width: calc(100vw - var(--pad-x) * 2 - 18px);
    }

    /* The inner content sits in row 2 and is pushed to the bottom of the
       hero with margin-top:auto so the middle area stays clear. */
    .hero__inner {
        grid-row: 2;
        align-self: end;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        height: 100%;
    }

    .hero__title {
        /* Smaller, tighter headline so 2 lines comfortably fit */
        font-size: clamp(2rem, 8.5vw, 2.8rem);
        line-height: 0.98;
        margin: 0 0 16px;
        max-width: 18ch;
    }
    .hero__lede {
        font-size: 15px;
        line-height: 1.45;
        margin: 0 0 20px;
        max-width: 100%;
    }
    .hero__cta {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        width: 100%;
    }
    .hero__cta .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 18px;
        font-size: 14px;
    }
    /* Hide the stats row on mobile — let the hero image (the face) breathe
       between the eyebrow and the headline. */
    .hero__stats { display: none; }
    .hero__scroll { display: none; }




    /* Stack section — keep the 3D feel but make sure NOTHING bleeds out
       of the viewport. Smaller cards, tighter perspective, narrower layers,
       and most importantly: enough room inside each card for the headline
       so it never overflows on small screens. */
    .stack { padding: 64px 0 48px; }
    .stack__pin { height: 320vh; }
    .stack__scene {
        perspective: 1000px;
        padding: 0 14px;
        overflow: hidden; /* hard clip so cards can never exceed viewport */
    }
    .stack__layers {
        width: calc(100vw - 28px);
        max-width: 360px;
        /* Auto height so the layer can grow with the text; rely on max-width
           and tighter rotation so it still feels like a 3D stack. */
        height: clamp(320px, 56vh, 440px);
        transform: rotateX(18deg) rotateZ(-6deg);
    }
    .stack__layer {
        padding: 18px 18px;
        border-radius: 8px;
        /* Make sure the card content can never push out of the card itself */
        justify-content: flex-start;
        gap: 10px;
    }
    .stack__layer::after { left: 6px; right: 6px; top: 6px; bottom: 6px; }
    .stack__layer h3 {
        margin-top: 8px;
        font-size: clamp(0.95rem, 4vw, 1.15rem);
        line-height: 1.25;
        max-width: 100%;
        /* Allow long words/phrases to wrap inside the card */
        overflow-wrap: anywhere;
        word-break: break-word;
        hyphens: auto;
    }
    .stack__layer .mono {
        font-size: 9px;
        letter-spacing: .14em;
        gap: 8px;
    }
    .stack__layer .mono::before { width: 12px; }
    /* All four cards share the same visual size — depth comes from
       shadows, not from popping the front card forward (which made it
       bigger via perspective and forced the text to overflow). */
    .stack__layer[data-layer="0"] { transform: translate3d(0, 0, 0px); }
    .stack__layer[data-layer="1"] { transform: translate3d(0, 0, -8px); }
    .stack__layer[data-layer="2"] { transform: translate3d(0, 0, -16px); }
    .stack__layer[data-layer="3"] { transform: translate3d(0, 0, -24px); }
    .stack__scene.is-active .stack__layers {
        transform: rotateX(14deg) rotateZ(-4deg);
    }
    /* Section head tightened on mobile so the section reads in one breath */
    .stack .section__head { margin-bottom: 32px; padding: 0 20px; }
    .stack .section__title { font-size: clamp(1.6rem, 7vw, 2.2rem); }
    .stack .section__lede { font-size: 15px; }
    /* On phone, show the chapter rail so users can track their position */
    .stack__progress { display: flex; }

    .metrics__grid { grid-template-columns: 1fr 1fr; }
    .foot__cols { grid-template-columns: 1fr 1fr; }
}

/* ---------- Reduced motion --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}