/* ==========================================================================
   BrainFire — systémy, nie weby.
   Tmavá „dielňa", žeravá oranžová, technické popisky v monospace.
   ========================================================================== */

:root {
    --ink: #0e0c0a;
    --ink-2: #15120f;
    --ink-3: #1e1a16;
    --paper: #eee6d8;
    --paper-ink: #2a241f;
    --paper-muted: #6b6157;
    --paper-line: rgba(14, 12, 10, .14);

    --text: #ede5d9;
    --text-2: #b9aea2;
    --muted: #9a9086;
    --dim: #6b635b;
    --line: rgba(237, 229, 217, .1);
    --line-strong: rgba(237, 229, 217, .2);

    --fire: #ff1101;
    --fire-dark: #c40d00;
    --spark: #ffc46b;
    --ok: #5ee08a;
    --err: #ff8a7a;

    --font-display: 'Bricolage Grotesque', ui-sans-serif, 'Segoe UI', sans-serif;
    --font-serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;

    --gutter: clamp(1rem, 4vw, 3rem);
    --max: 1320px;
    --header-h: 76px;
    --radius: 4px;
    --ease: cubic-bezier(.2, .7, .1, 1);
}

/* ---------- Základ ---------- */

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
    margin: 0;
    background: var(--ink);
    color: var(--text);
    font-family: var(--font-display);
    font-optical-sizing: auto;
    font-size: 1.0625rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: clip;
}

/* jemné zrno cez celú stránku */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 90;
    pointer-events: none;
    opacity: .055;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1, h2, h3 {
    margin: 0;
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -.03em;
    text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
svg { display: block; }
em { font-style: italic; }

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

:focus-visible {
    outline: 2px solid var(--spark);
    outline-offset: 3px;
    border-radius: 2px;
}

main:focus { outline: none; }

.icon {
    display: inline-block;
    width: 1.15em;
    height: 1.15em;
    flex-shrink: 0;
    vertical-align: -.2em;
}

.wrap {
    width: min(100% - 2 * var(--gutter), var(--max));
    margin-inline: auto;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -100px;
    z-index: 200;
    padding: .7rem 1rem;
    background: var(--fire);
    color: var(--ink);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.grid-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 80px 80px;
    background-position: center top;
    -webkit-mask-image: radial-gradient(ellipse 70% 65% at 62% 38%, #000 15%, transparent 72%);
    mask-image: radial-gradient(ellipse 70% 65% at 62% 38%, #000 15%, transparent 72%);
    opacity: .7;
}

/* ---------- Typografické prvky ---------- */

.kicker {
    display: inline-flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    font-size: .74rem;
    font-weight: 500;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--fire);
}

.kicker__num { color: var(--muted); }
.kicker__num::after {
    content: '';
    display: inline-block;
    width: 2.2rem;
    height: 1px;
    margin-left: .75rem;
    vertical-align: middle;
    background: currentColor;
    opacity: .6;
}

.section-title {
    max-width: 17ch;
    font-size: clamp(2.3rem, 4.6vw, 4.3rem);
    line-height: 1;
    letter-spacing: -.045em;
}

.section-lead {
    max-width: 46ch;
    font-size: 1.12rem;
    color: var(--text-2);
}

/* ---------- Tlačidlá a odkazy ---------- */

.btn {
    --bg: transparent;
    --fg: var(--text);
    --bd: var(--line-strong);
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    padding: .95rem 1.4rem;
    border: 1px solid var(--bd);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--fg);
    font: 600 1rem/1.1 var(--font-display);
    letter-spacing: -.01em;
    text-decoration: none;
    cursor: pointer;
    transition: background-color .25s, border-color .25s, color .25s;
}

.btn .icon { transition: transform .35s var(--ease); }
.btn:hover .icon { transform: translateX(4px); }

.btn--fire { --bg: var(--fire); --fg: var(--ink); --bd: var(--fire); }
.btn--fire:hover { --bg: var(--spark); --bd: var(--spark); }
.btn--ghost:hover { --bd: var(--text); }
.btn--sm { padding: .68rem 1rem; font-size: .92rem; }
.btn--xl { padding: 1.2rem 1.75rem; font-size: 1.1rem; }

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding-bottom: .35rem;
    border-bottom: 1px solid var(--line-strong);
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
    transition: color .25s, border-color .25s;
}
.link-arrow .icon { transition: transform .35s var(--ease); }
.link-arrow:hover { color: var(--fire); border-color: var(--fire); }
.link-arrow:hover .icon { transform: translateX(4px); }

/* ---------- Hlavička ---------- */

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 50;
    border-bottom: 1px solid transparent;
    transition: background-color .3s, border-color .3s;
}

.site-header.is-scrolled {
    background: rgba(14, 12, 10, .8);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    backdrop-filter: blur(14px) saturate(140%);
    border-bottom-color: var(--line);
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: var(--header-h);
}

.brand {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    flex-shrink: 0;
    text-decoration: none;
}

.logo-mark { width: auto; height: 44px; }
.logo-word { width: auto; height: 24px; margin-top: 4px; }

.site-nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.site-nav__links {
    display: flex;
    gap: clamp(1rem, 2.6vw, 2.6rem);
    margin-inline: auto;
}

.site-nav__links a {
    position: relative;
    display: inline-flex;
    align-items: baseline;
    gap: .4rem;
    padding: .4rem 0;
    color: var(--muted);
    font-size: .98rem;
    font-weight: 500;
    text-decoration: none;
    transition: color .2s;
}

.site-nav__idx {
    font-family: var(--font-mono);
    font-size: .66rem;
    color: var(--dim);
}

.site-nav__links a:hover,
.site-nav__links a[aria-current='page'] { color: var(--text); }

.site-nav__links a[aria-current='page']::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 2px;
    background: var(--fire);
}

.site-nav__aside {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.lang-switch {
    display: inline-flex;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    font-family: var(--font-mono);
    font-size: .76rem;
}

.lang-switch a {
    padding: .45rem .65rem;
    color: var(--muted);
    letter-spacing: .08em;
    text-decoration: none;
    transition: color .2s, background-color .2s;
}
.lang-switch a:hover { color: var(--text); }
.lang-switch a.is-active { background: var(--text); color: var(--ink); }

.nav-toggle { display: none; }

/* ---------- Úvodná sekcia ---------- */

.hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: min(100svh, 980px);
    padding: calc(var(--header-h) + 3rem) 0 4.5rem;
}

.hero__glow {
    position: absolute;
    z-index: -1;
    right: -22%;
    bottom: -62%;
    width: min(1100px, 130vw);
    aspect-ratio: 1;
    background: radial-gradient(circle, rgba(255, 34, 10, .3), rgba(255, 34, 10, .07) 40%, transparent 64%);
    pointer-events: none;
}

.hero__copy { max-width: 980px; }

.hero__title {
    margin-bottom: 2rem;
    font-size: clamp(3.6rem, 9vw, 9.4rem);
    font-weight: 750;
    line-height: .92;
    letter-spacing: -.055em;
}

.hero__line { display: block; }

.hero__title em,
.page-hero__title em,
.section-title em,
.cta__title em,
.sides__title em {
    font-family: var(--font-serif);
    font-weight: 400;
    letter-spacing: -.02em;
    color: var(--fire);
}

.hero__title em { font-size: 1.14em; line-height: .85; }

.hero__lead {
    max-width: 42ch;
    margin-bottom: 2.5rem;
    font-size: clamp(1.08rem, 1.4vw, 1.28rem);
    line-height: 1.55;
    color: var(--text-2);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: .8rem;
}

/* pás so zoznamom služieb (statický) */
.ticker {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .9rem 2.4rem;
    padding: 1.4rem var(--gutter);
    border-block: 1px solid var(--line);
}

.ticker li {
    display: inline-flex;
    align-items: center;
    gap: 2.4rem;
    font-family: var(--font-mono);
    font-size: .78rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--muted);
}

.ticker li:not(:last-child)::after {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--fire);
    transform: rotate(45deg);
}

/* ---------- Sekcie ---------- */

.section {
    position: relative;
    padding-block: clamp(5rem, 10vw, 9rem);
}

.section--flush-top { padding-top: 0; }

.section-head {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
    gap: 2rem 4rem;
    margin-bottom: clamp(3rem, 6vw, 5rem);
}

/* svetlá „papierová" sekcia */
.paper {
    background: var(--paper);
    color: var(--ink);
}
.paper .kicker { color: var(--fire-dark); }
.paper .kicker__num { color: var(--paper-muted); }
.paper .section-title { color: var(--ink); }
.paper ::selection { background: var(--ink); color: var(--paper); }

/* piliere */
.pillars {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.pillar {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 36rem;
    padding: clamp(1.8rem, 4vw, 3.5rem);
}

.pillar + .pillar { border-left: 1px solid var(--line); }

.pillar::before {
    content: '';
    position: absolute;
    inset: auto 0 0;
    z-index: -1;
    height: 70%;
    background: radial-gradient(ellipse at 50% 110%, rgba(255, 34, 10, .2), transparent 70%);
    opacity: 0;
    transition: opacity .6s;
}
.pillar:hover::before { opacity: 1; }

.pillar__num {
    display: block;
    margin-bottom: 2.5rem;
    font-size: clamp(7rem, 15vw, 13rem);
    font-weight: 800;
    line-height: .75;
    letter-spacing: -.01em;
    color: transparent;
    -webkit-text-stroke: 1.2px var(--line-strong);
    transition: -webkit-text-stroke-color .5s, transform .7s var(--ease);
}
.pillar:hover .pillar__num {
    -webkit-text-stroke-color: var(--fire);
    transform: translateX(.06em);
}

.pillar__title {
    margin-bottom: 1rem;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    letter-spacing: -.04em;
}

.pillar__text {
    max-width: 40ch;
    margin-bottom: 2rem;
    color: var(--text-2);
}

.pillar__list { margin-bottom: 2.5rem; }

.pillar__list li {
    display: flex;
    gap: .9rem;
    padding: .9rem 0;
    border-top: 1px solid var(--line);
    font-weight: 500;
}

.pillar__list li::before {
    content: '→';
    font-family: var(--font-mono);
    color: var(--fire);
}

.pillar .link-arrow { align-self: flex-start; margin-top: auto; }

/* manifest */
.manifesto { overflow: hidden; }

.manifesto__title { display: block; margin: .5rem 0 3.5rem; }

.manifesto__pre {
    display: block;
    margin-bottom: .4rem;
    font-size: clamp(1.6rem, 3.4vw, 3rem);
    font-weight: 600;
    letter-spacing: -.04em;
    color: var(--paper-muted);
}

.manifesto__main {
    display: block;
    max-width: 14ch;
    font-family: var(--font-serif);
    font-size: clamp(3.2rem, 9.4vw, 9.4rem);
    font-style: italic;
    font-weight: 400;
    line-height: .92;
    letter-spacing: -.035em;
    color: var(--ink);
}

.manifesto__body {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 3rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--paper-line);
}

.manifesto__body p {
    max-width: 44ch;
    font-size: 1.22rem;
    line-height: 1.55;
    color: var(--paper-ink);
}

.manifesto__tags {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.manifesto__tags li {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    padding: .55rem .9rem;
    border: 1px solid rgba(14, 12, 10, .25);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: .78rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--paper-ink);
}

.manifesto__tags li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--fire);
}

/* postup */
.steps {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2.5rem;
}

.steps::before {
    content: '';
    position: absolute;
    top: 7px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--fire), rgba(255, 34, 10, .12));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.8s var(--ease);
}
.steps.is-in::before,
.no-js .steps::before { transform: none; }

.step__dot {
    position: relative;
    display: block;
    width: 15px;
    height: 15px;
    margin-bottom: 2rem;
    border: 1px solid var(--fire);
    border-radius: 50%;
    background: var(--ink);
}
.step__dot::after {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: var(--fire);
}

.step__label {
    display: block;
    margin-bottom: .8rem;
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
}

.step h3 {
    margin-bottom: .8rem;
    font-size: 1.5rem;
    letter-spacing: -.035em;
}

.step p { color: var(--text-2); font-size: 1rem; }

/* referencie — riadky */
.ref-list { border-top: 1px solid var(--line); }

.ref-row {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: 3.5rem minmax(0, 1fr) minmax(0, 1.25fr) 11rem 2.5rem;
    grid-template-areas: 'idx name summary type arrow';
    align-items: center;
    gap: 1.5rem;
    padding: 2.2rem 1.25rem;
    border-bottom: 1px solid var(--line);
    color: var(--text);
    text-decoration: none;
    transition: color .35s;
}

.ref-row::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: var(--fire);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform .45s var(--ease);
}

.ref-row:hover::before,
.ref-row:focus-visible::before { transform: scaleY(1); }

.ref-row:hover,
.ref-row:focus-visible { color: var(--ink); }

.ref-row__idx {
    grid-area: idx;
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--muted);
}

.ref-row__name {
    grid-area: name;
    font-size: clamp(1.9rem, 3.8vw, 3.2rem);
    font-weight: 750;
    line-height: 1;
    letter-spacing: -.05em;
}

.ref-row__summary {
    grid-area: summary;
    max-width: 42ch;
    color: var(--text-2);
}

.ref-row__type {
    grid-area: type;
    justify-self: start;
    padding: .4rem .75rem;
    border: 1px solid currentColor;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--fire);
}

.ref-row__arrow { grid-area: arrow; justify-self: end; }
.ref-row__arrow .icon { width: 1.6rem; height: 1.6rem; transition: transform .45s var(--ease); }

.ref-row:hover .ref-row__idx,
.ref-row:hover .ref-row__summary,
.ref-row:hover .ref-row__type,
.ref-row:focus-visible .ref-row__idx,
.ref-row:focus-visible .ref-row__summary,
.ref-row:focus-visible .ref-row__type { color: var(--ink); }

.ref-row:hover .ref-row__arrow .icon { transform: rotate(-45deg); }

.refs__more {
    display: flex;
    justify-content: flex-end;
    margin-top: 2.5rem;
}

/* výzva */
.cta {
    isolation: isolate;
    overflow: hidden;
    border-top: 1px solid var(--line);
}

.cta__glow {
    position: absolute;
    z-index: -1;
    right: -12%;
    bottom: -75%;
    width: min(950px, 130vw);
    aspect-ratio: 1;
    background: radial-gradient(circle, rgba(255, 34, 10, .26), transparent 62%);
    pointer-events: none;
}

.cta__title {
    max-width: 16ch;
    margin-bottom: 2.5rem;
    font-size: clamp(2.6rem, 6.4vw, 6.2rem);
    line-height: .96;
    letter-spacing: -.055em;
}

.cta__row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 2rem 4rem;
}

.cta__text {
    max-width: 44ch;
    font-size: 1.15rem;
    color: var(--text-2);
}

/* ---------- Pätička ---------- */

.site-footer {
    overflow: hidden;
    padding-top: 4.5rem;
    border-top: 1px solid var(--line);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
    gap: 2.5rem;
}

.site-footer__tagline {
    max-width: 34ch;
    margin-top: 1.25rem;
    font-size: .98rem;
    color: var(--text-2);
}

.site-footer__h {
    margin-bottom: 1.2rem;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 500;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--muted);
}

.site-footer ul { display: grid; gap: .55rem; font-size: .98rem; }
.site-footer ul a { text-decoration: none; transition: color .2s; }
.site-footer ul a:hover { color: var(--fire); }
.site-footer__muted { color: var(--text-2); }

.site-footer__bottom {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem 2rem;
    padding-block: 1.5rem;
    border-top: 1px solid var(--line);
    background: var(--ink);
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .05em;
    color: var(--muted);
}

/* ---------- Podstránky ---------- */

.page-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: calc(var(--header-h) + clamp(4rem, 10vw, 8rem)) 0 clamp(3.5rem, 7vw, 6rem);
    border-bottom: 1px solid var(--line);
}

.page-hero__glow {
    position: absolute;
    z-index: -1;
    top: -45%;
    right: -12%;
    width: min(760px, 120vw);
    aspect-ratio: 1;
    background: radial-gradient(circle, rgba(255, 34, 10, .22), transparent 62%);
    pointer-events: none;
}

.crumbs {
    display: flex;
    gap: .7rem;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted);
}
.crumbs a { text-decoration: none; transition: color .2s; }
.crumbs a:hover { color: var(--text); }
.crumbs [aria-current] { color: var(--fire); }

.page-hero__title {
    max-width: 15ch;
    margin-bottom: 2rem;
    font-size: clamp(2.9rem, 7vw, 6.6rem);
    line-height: .95;
    letter-spacing: -.055em;
}
.page-hero__title em { display: block; font-size: 1.06em; line-height: .95; }

.page-hero__lead {
    max-width: 52ch;
    font-size: clamp(1.08rem, 1.5vw, 1.32rem);
    color: var(--text-2);
}

/* mriežka schopností */
.cap-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}

.cap {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 19rem;
    padding: clamp(1.6rem, 3vw, 2.5rem);
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transition: background-color .35s;
}

.cap::after {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 0;
    height: 2px;
    background: var(--fire);
    transition: width .55s var(--ease);
}

.cap:hover { background: var(--ink-2); }
.cap:hover::after { width: calc(100% + 1px); }

.cap__idx {
    margin-bottom: auto;
    padding-bottom: 3rem;
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .14em;
    color: var(--fire);
}

.cap__title {
    margin-bottom: .8rem;
    font-size: 1.55rem;
    letter-spacing: -.035em;
}

.cap__text { font-size: 1rem; color: var(--text-2); }

/* dvojstĺpec s „lepivým" nadpisom */
.split {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.25fr);
    align-items: start;
    gap: clamp(2rem, 6vw, 6rem);
}

.split__head {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
}

.principles li {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 1.5rem;
    padding: 2.2rem 0;
    border-top: 1px solid var(--line);
}
.principles li:last-child { border-bottom: 1px solid var(--line); }

.principles__num {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-style: italic;
    line-height: 1;
    color: var(--fire);
}

.principles h3 {
    margin-bottom: .6rem;
    font-size: 1.5rem;
    letter-spacing: -.035em;
}

.principles p { color: var(--text-2); }

.checklist li {
    display: grid;
    grid-template-columns: 1.5rem minmax(0, 1fr);
    gap: 1rem;
    padding: 1rem 0;
    border-top: 1px solid var(--line);
}

.checklist .icon {
    width: 1.3rem;
    height: 1.3rem;
    margin-top: .15rem;
    color: var(--fire);
}

.checklist--lg li { padding: 1.35rem 0; font-size: 1.2rem; line-height: 1.45; }
.paper .checklist li { border-top-color: var(--paper-line); color: var(--paper-ink); }
.paper .checklist li:last-child { border-bottom: 1px solid var(--paper-line); }
.paper .checklist .icon { color: var(--fire-dark); }

/* konzulting — služby */
.service {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: clamp(2rem, 6vw, 6rem);
    padding-block: clamp(3.5rem, 7vw, 6rem);
    border-top: 1px solid var(--line);
}
.service:first-child { padding-top: 0; border-top: 0; }
.service:last-child { padding-bottom: 0; }

.service__head {
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    align-self: start;
}

.service__num {
    display: block;
    margin-bottom: 1.2rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .14em;
    color: var(--fire);
}

.service__title {
    margin-bottom: 1.5rem;
    font-size: clamp(2.2rem, 4.4vw, 4rem);
    line-height: .98;
    letter-spacing: -.05em;
}

.service__lead {
    max-width: 30ch;
    font-family: var(--font-serif);
    font-size: clamp(1.35rem, 2.2vw, 1.8rem);
    font-style: italic;
    line-height: 1.28;
}

.service__body > p {
    max-width: 52ch;
    margin-bottom: 2rem;
    font-size: 1.15rem;
    color: var(--text-2);
}

/* obe strany stola */
.sides__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
    gap: 2rem 4rem;
}

.sides__title {
    font-size: clamp(2.8rem, 7vw, 7rem);
    line-height: .94;
    letter-spacing: -.055em;
}
.sides__title em { display: block; color: var(--fire-dark); font-size: 1.06em; }

.sides__text {
    max-width: 44ch;
    font-size: 1.18rem;
    line-height: 1.55;
    color: var(--paper-ink);
}

/* formy spolupráce */
.coop-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}

.coop {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 16rem;
    padding: 2rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, var(--ink-2), transparent);
    transition: border-color .3s, transform .45s var(--ease);
}
.coop:hover { border-color: rgba(255, 34, 10, .55); transform: translateY(-4px); }

.coop__idx {
    margin-bottom: auto;
    padding-bottom: 2rem;
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .14em;
    color: var(--fire);
}
.coop h3 { font-size: 1.5rem; letter-spacing: -.035em; }
.coop p { color: var(--text-2); }

/* referencie — detail */
.case {
    display: grid;
    grid-template-columns: minmax(0, .32fr) minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 4rem);
    padding-block: clamp(3rem, 6vw, 5rem);
    border-top: 1px solid var(--line);
    scroll-margin-top: calc(var(--header-h) + 1rem);
}
.case:first-child { padding-top: 0; border-top: 0; }

.case__index {
    font-size: clamp(3.5rem, 8vw, 7rem);
    font-weight: 800;
    line-height: .8;
    letter-spacing: -.01em;
    color: transparent;
    -webkit-text-stroke: 1px var(--line-strong);
    transition: -webkit-text-stroke-color .5s;
}
.case:hover .case__index,
.case:target .case__index { -webkit-text-stroke-color: var(--fire); }

.case__name {
    margin-bottom: 1.2rem;
    font-size: clamp(2.4rem, 5vw, 4.4rem);
    line-height: .95;
    letter-spacing: -.055em;
}

.case__summary {
    max-width: 26ch;
    font-family: var(--font-serif);
    font-size: clamp(1.3rem, 2vw, 1.65rem);
    font-style: italic;
    line-height: 1.3;
}

.case__detail > p {
    margin-bottom: 1.5rem;
    font-size: 1.08rem;
    color: var(--text-2);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
    margin-bottom: 2rem;
}

.tags li {
    padding: .4rem .7rem;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: .7rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-2);
}

.note {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: clamp(2rem, 4vw, 3rem);
    padding: 1.5rem 1.75rem;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius);
    color: var(--text-2);
}
.note .icon { width: 1.4rem; height: 1.4rem; color: var(--fire); }

/* kontakt */
.contact__channels {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.channel {
    position: relative;
    isolation: isolate;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: clamp(1.8rem, 4vw, 3.2rem);
    color: var(--text);
    text-decoration: none;
    transition: color .35s;
}
.channel + .channel { border-left: 1px solid var(--line); }

.channel::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: var(--fire);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform .45s var(--ease);
}
.channel:hover::before,
.channel:focus-visible::before { transform: scaleY(1); }
.channel:hover,
.channel:focus-visible { color: var(--ink); }

.channel__label {
    font-family: var(--font-mono);
    font-size: .74rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--fire);
    transition: color .35s;
}
.channel:hover .channel__label,
.channel:focus-visible .channel__label { color: var(--ink); }

.channel__value {
    font-size: clamp(1.8rem, 3.6vw, 3.2rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -.04em;
    white-space: nowrap;
}

.channel__arrow .icon { width: 1.8rem; height: 1.8rem; transition: transform .45s var(--ease); }
.channel:hover .channel__arrow .icon { transform: rotate(-45deg); }

.contact__meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem 3rem;
    margin-top: clamp(2.5rem, 5vw, 4rem);
}

.contact__h {
    margin-bottom: .6rem;
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 500;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
}

.contact__meta p { font-size: 1.05rem; }
.contact__muted { color: var(--text-2); font-size: .95rem; }
.contact__note { align-self: end; color: var(--text-2); }

/* 404 */
.notfound {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 88svh;
    padding: calc(var(--header-h) + 3rem) 0 5rem;
}

.notfound__code {
    margin-bottom: 1.5rem;
    font-size: clamp(8rem, 28vw, 20rem);
    font-weight: 800;
    line-height: .78;
    letter-spacing: -.02em;
    color: transparent;
    -webkit-text-stroke: 1px var(--line-strong);
}
.notfound__code span { color: var(--fire); -webkit-text-stroke: 0; }

.notfound__title {
    max-width: 18ch;
    margin-bottom: 1rem;
    font-size: clamp(2rem, 4.5vw, 3.6rem);
    letter-spacing: -.045em;
}

.notfound__text { margin-bottom: 2.2rem; font-size: 1.15rem; color: var(--text-2); }

/* ---------- Animácie ---------- */

[data-anim] {
    opacity: 0;
    transform: translateY(26px);
    animation: rise 1s var(--ease) forwards;
    animation-delay: calc(var(--i, 0) * 110ms + 120ms);
}

.js .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .9s var(--ease), transform .9s var(--ease);
    transition-delay: var(--d, 0ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- Responzívnosť ---------- */

@media (max-width: 1100px) {
    .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .cap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .site-nav__idx { display: none; }
}

@media (max-width: 960px) {
    :root { --header-h: 68px; }

    .nav-toggle {
        position: relative;
        z-index: 2;
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 6px;
        width: 44px;
        height: 44px;
        margin-left: auto;
        border: 1px solid var(--line-strong);
        border-radius: var(--radius);
        background: none;
        color: var(--text);
        cursor: pointer;
    }

    .nav-toggle span {
        display: block;
        width: 18px;
        height: 1.5px;
        background: currentColor;
        transition: transform .3s var(--ease);
    }

    .nav-open .nav-toggle span:first-child { transform: translateY(3.75px) rotate(45deg); }
    .nav-open .nav-toggle span:last-child { transform: translateY(-3.75px) rotate(-45deg); }

    /* backdrop-filter by z hlavičky spravil kontajner pre fixed menu */
    .nav-open .site-header {
        background: var(--ink);
        -webkit-backdrop-filter: none;
        backdrop-filter: none;
    }

    .nav-open { overflow: hidden; }

    .site-nav {
        position: fixed;
        inset: 0;
        z-index: 1;
        flex-direction: column;
        align-items: stretch;
        justify-content: space-between;
        padding: calc(var(--header-h) + 1.5rem) var(--gutter) 2rem;
        background: var(--ink);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        transition: opacity .3s, transform .35s var(--ease), visibility 0s .35s;
    }

    .nav-open .site-nav {
        opacity: 1;
        visibility: visible;
        transform: none;
        transition: opacity .3s, transform .35s var(--ease);
    }

    .site-nav__links { flex-direction: column; gap: 0; margin: 0; }

    .site-nav__links a {
        width: 100%;
        padding: .8rem 0;
        border-bottom: 1px solid var(--line);
        color: var(--text);
        font-size: clamp(2rem, 9vw, 3rem);
        font-weight: 700;
        letter-spacing: -.04em;
    }

    .site-nav__idx { display: inline; font-size: .8rem; }
    .site-nav__links a[aria-current='page'] { color: var(--fire); }
    .site-nav__links a[aria-current='page']::after { display: none; }
    .site-nav__aside { justify-content: space-between; }

    .hero { min-height: 0; padding-bottom: 3rem; }

    .section-head,
    .manifesto__body,
    .split,
    .service,
    .sides__inner,
    .case,
    .contact__channels,
    .contact__meta { grid-template-columns: minmax(0, 1fr); }

    .channel + .channel { border-top: 1px solid var(--line); border-left: 0; }

    .split__head,
    .service__head { position: static; }

    .pillars { grid-template-columns: minmax(0, 1fr); }
    .pillar { min-height: 0; }
    .pillar + .pillar { border-top: 1px solid var(--line); border-left: 0; }

    .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 3rem; }
    .steps::before { display: none; }

    .ref-row {
        grid-template-columns: 2.5rem minmax(0, 1fr) 2rem;
        grid-template-areas:
            'idx name arrow'
            '. summary summary'
            '. type type';
        gap: .9rem 1rem;
        padding: 1.8rem .75rem;
    }
    .ref-row__type { justify-self: start; }

    .coop-grid { grid-template-columns: minmax(0, 1fr); }
    .coop { min-height: 0; }

    .case { gap: 1.25rem; }
    .case__index { font-size: 3rem; }
}

@media (max-width: 640px) {
    .hero__title { font-size: clamp(3.2rem, 17vw, 5rem); }
    .logo-mark { height: 38px; }
    .logo-word { height: 21px; }
    .hero__actions .btn { flex: 1 1 auto; justify-content: center; }

    .cap-grid,
    .steps,
    .site-footer__grid { grid-template-columns: minmax(0, 1fr); }

    .cap { min-height: 0; }
    .cap__idx { padding-bottom: 1.5rem; }

    .principles li { grid-template-columns: 3rem minmax(0, 1fr); gap: 1rem; }
    .principles__num { font-size: 2.2rem; }

    .cta__row .btn { width: 100%; justify-content: center; }
    .channel__value { font-size: clamp(1.5rem, 8vw, 2rem); }

    .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}

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

    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        animation-delay: 0s !important;
        transition-duration: .01ms !important;
        transition-delay: 0s !important;
    }

}