/* Kenos site — dark glovebox, not a SaaS landing.
 *
 * Near-black field, warm paper ink for type, one copper edge.
 * Display is oversized mono tracking; prose is Plex Sans.
 * No floating card grids in the hero.
 */

:root {
  --bg:        #0e0f12;
  --bg-lift:   #16181d;
  --panel:     #1a1c22;
  --line:      #2a2d36;
  --line-soft: #22252c;

  --ink:   #f2eee6;
  --ink-2: #a8a296;
  --ink-3: #6e6a62;

  --copper: #c4783a;
  --copper-dim: #8a5528;
  --mist: #9eb0c8;

  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --text-body:  clamp(1.05rem, 1rem + 0.2vw, 1.125rem);
  --text-lead:  clamp(1.15rem, 1.05rem + 0.45vw, 1.4rem);
  --text-h1:    clamp(2.8rem, 1.4rem + 5.5vw, 5.8rem);
  --text-brand: clamp(4.5rem, 2rem + 12vw, 11rem);
  --text-h2:    clamp(1.55rem, 1.25rem + 1.2vw, 2.25rem);
  --text-h3:    clamp(1.1rem, 1.05rem + 0.2vw, 1.2rem);
  --text-label: 0.7rem;

  --measure: 58ch;
  --gutter: clamp(1.25rem, 0.7rem + 2.4vw, 3.25rem);
  --section: clamp(4rem, 2.5rem + 6vw, 8rem);
  --radius: 12px;

  --fast: 160ms;
  --normal: 420ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(80% 55% at 70% -5%, color-mix(in srgb, var(--copper) 18%, transparent), transparent 58%),
    radial-gradient(60% 40% at 0% 20%, color-mix(in srgb, var(--mist) 10%, transparent), transparent 50%),
    linear-gradient(180deg, #12141a 0%, var(--bg) 28%, var(--bg) 100%);
  background-attachment: fixed;
}

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

a {
  color: var(--ink);
  text-decoration-color: color-mix(in srgb, var(--copper) 55%, var(--line));
  text-underline-offset: 0.22em;
  transition: color var(--fast) var(--ease);
}
a:hover { color: var(--copper); text-decoration-color: currentColor; }

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

::selection { background: color-mix(in srgb, var(--copper) 40%, transparent); color: var(--ink); }

.wrap { width: min(100% - var(--gutter) * 2, 1120px); margin-inline: auto; }
.narrow { width: min(100% - var(--gutter) * 2, 42rem); margin-inline: auto; }
.measure { max-width: var(--measure); }

.skip {
  position: absolute; left: -9999px;
  background: var(--panel); color: var(--ink);
  padding: 0.7rem 1rem; border: 1px solid var(--line); border-radius: 8px;
  font-family: var(--mono); font-size: var(--text-label);
}
.skip:focus { left: 1rem; top: 1rem; z-index: 100; }

/* ── header ────────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid transparent;
}
.site-header > .wrap {
  display: flex; align-items: center; gap: 1.5rem;
  min-height: 64px;
}

.brand {
  display: inline-flex; align-items: center; gap: 0.65rem;
  font-family: var(--mono); font-weight: 500; font-size: 0.9rem;
  letter-spacing: 0.04em; text-decoration: none; color: var(--ink);
}
.brand img {
  width: 26px; height: 26px; border-radius: 7px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ink) 12%, transparent);
}

.site-nav { margin-left: auto; display: flex; align-items: center; gap: 1.5rem; }
.site-nav a {
  font-family: var(--mono); font-size: var(--text-label);
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); text-decoration: none;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav .lang { color: var(--ink-2); }

.nav-toggle {
  display: none; margin-left: auto;
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
  color: var(--ink); padding: 0.4rem; cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; fill: currentColor; }
.nav-toggle .ic-close { display: none; }
.nav-toggle[aria-expanded="true"] .ic-close { display: block; }
.nav-toggle[aria-expanded="true"] .ic-burger { display: none; }

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: 64px 0 auto 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg-lift); border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1.25rem;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity var(--fast) var(--ease), transform var(--fast) var(--ease);
  }
  .site-nav a { padding: 0.9rem 0; width: 100%; border-bottom: 1px solid var(--line-soft); }
  .site-nav.open { opacity: 1; transform: none; pointer-events: auto; }
  html:not(.js) .site-nav { position: static; opacity: 1; transform: none; pointer-events: auto; }
  html:not(.js) .nav-toggle { display: none; }
}

/* ── type ──────────────────────────────────────────────────────────────────── */

h1, h2, h3 { font-weight: 500; letter-spacing: -0.03em; line-height: 1.08; margin: 0; }
h1 { font-size: var(--text-h1); max-width: 14ch; }
h2 { font-size: var(--text-h2); margin: 0 0 1rem; max-width: 22ch; }
h3 { font-size: var(--text-h3); letter-spacing: -0.015em; margin: 0 0 0.35rem; }
p { margin: 0 0 1.15rem; max-width: var(--measure); color: var(--ink-2); }
.lead { font-size: var(--text-lead); color: var(--ink-2); line-height: 1.5; max-width: 36ch; }
.updated {
  font-family: var(--mono); font-size: var(--text-label);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3); margin: 0.35rem 0 1.6rem;
}

.marker {
  display: flex; align-items: center; gap: 0.85rem;
  font-family: var(--mono); font-size: var(--text-label);
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper); margin: 0 0 1.25rem;
}
.marker::after {
  content: ""; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

/* ── buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--mono); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.04em; text-decoration: none; text-transform: uppercase;
  padding: 0.85rem 1.3rem; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink);
  background: transparent;
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease),
              color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.btn:hover { border-color: var(--ink-3); color: var(--ink); transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-primary {
  background: var(--ink); color: var(--bg); border-color: var(--ink);
}
.btn-primary:hover { background: var(--copper); border-color: var(--copper); color: #140e08; }
.btn-soon {
  color: var(--ink-3); cursor: default; border-style: dashed; border-color: var(--line);
}
.btn-soon:hover { transform: none; border-color: var(--line); color: var(--ink-3); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.75rem 0 0; }

/* ── home hero ─────────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  min-height: min(92vh, 880px);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(105deg, transparent 40%, color-mix(in srgb, var(--copper) 7%, transparent) 100%),
    repeating-linear-gradient(
      -12deg,
      transparent 0 18px,
      color-mix(in srgb, var(--ink) 2.2%, transparent) 18px 19px
    );
  pointer-events: none; opacity: 0.9;
}
.hero > .wrap { position: relative; z-index: 1; }

.brand-lockup {
  font-family: var(--mono);
  font-weight: 500;
  font-size: var(--text-brand);
  line-height: 0.88;
  letter-spacing: -0.06em;
  color: var(--ink);
  margin: 0 0 1.5rem;
  text-wrap: balance;
}
.brand-lockup span {
  display: block;
  background: linear-gradient(180deg, #fff8ef 0%, #cfc8bc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-copy { max-width: 34rem; }
.hero h1 {
  font-family: var(--sans);
  font-size: clamp(1.45rem, 1.1rem + 1.4vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  max-width: none;
  color: var(--ink);
  margin: 0 0 1rem;
  line-height: 1.2;
}
.hero .lead { margin-bottom: 0; }

/* Real window captures — light and dark, swapped by the switch above.
 * Shots are cropped flush to the window chrome so the left edge matches
 * the copy above (the PNG window shadow used to look like left padding). */
.shots {
  position: relative;
  margin: clamp(2.5rem, 1.5rem + 4vw, 4.5rem) 0 0;
  max-width: none;
  width: 100%;
}
.shot-switch {
  display: inline-flex;
  gap: 0;
  margin: 0 0 0.9rem;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-lift) 70%, #000);
}
.shot-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  font-family: var(--mono);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}
.shot-switch button[aria-pressed="true"] {
  background: color-mix(in srgb, var(--copper) 22%, var(--bg));
  color: var(--ink);
}
.shot-switch button:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
}
.shot-stage {
  position: relative;
  isolation: isolate;
}
.shot {
  display: block;
  margin: 0;
  line-height: 0;
}
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  filter: drop-shadow(0 36px 70px color-mix(in srgb, #000 55%, transparent));
}
/* Crossfade: both pictures occupy the same slot; inactive sits underneath. */
.shot-stage .shot:not(.is-active) {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 280ms ease;
}
.shot-stage .shot.is-active {
  position: relative;
  opacity: 1;
  transition: opacity 280ms ease;
}
@media (prefers-reduced-motion: reduce) {
  .shot-stage .shot { transition: none; }
}

/* ── stacked feature rows (not cards) ──────────────────────────────────────── */

.band {
  padding: var(--section) 0;
  border-top: 1px solid var(--line-soft);
}
.band-tight { padding-top: calc(var(--section) * 0.7); }

.rail {
  display: grid;
  gap: 0;
  margin-top: 2rem;
  border-top: 1px solid var(--line);
}
.rail-item {
  display: grid;
  gap: 0.75rem 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
@media (min-width: 800px) {
  .rail-item {
    grid-template-columns: 8rem 1fr minmax(9rem, 12rem);
  }
}
.rail-key {
  font-family: var(--mono);
  font-size: var(--text-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
}
.rail-item h3 {
  color: var(--ink);
  font-weight: 500;
}
.rail-item p { margin: 0.35rem 0 0; max-width: 48ch; }
.rail-meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
@media (min-width: 800px) {
  .rail-meta { text-align: right; }
}

.callout {
  border-left: 2px solid var(--copper);
  background: color-mix(in srgb, var(--copper) 8%, var(--bg-lift));
  padding: 1rem 1.15rem;
  border-radius: 0 10px 10px 0;
  margin: 1.5rem 0;
}
.callout p { margin: 0; max-width: none; color: var(--ink-2); }

.doc { padding: clamp(2.8rem, 2rem + 4vw, 5rem) 0 var(--section); }
.doc h1 { color: var(--ink); margin-bottom: 0.15rem; max-width: none; }
.doc h2 { color: var(--ink); margin-top: 2.2rem; }
.doc h3 { color: var(--ink); margin-top: 1.6rem; }
.doc p, .doc li { color: var(--ink-2); }
.doc ul, .doc ol { margin: 0 0 1.2rem; padding-left: 1.2rem; max-width: var(--measure); }
.doc li { margin: 0.4rem 0; }
.doc code {
  font-family: var(--mono); font-size: 0.88em;
  background: var(--bg-lift); padding: 0.12em 0.4em; border-radius: 4px;
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.4rem 0 3rem;
  color: var(--ink-3);
  font-size: 0.92rem;
}
.site-footer > .wrap {
  display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem;
  justify-content: space-between; align-items: flex-start;
}
.site-footer p { margin: 0 0 0.35rem; max-width: 40ch; color: var(--ink-3); }
.footer-links {
  display: flex; flex-wrap: wrap; gap: 0.85rem 1.25rem;
  font-family: var(--mono); font-size: var(--text-label);
  letter-spacing: 0.08em; text-transform: uppercase;
}
.footer-links a { text-decoration: none; color: var(--ink-3); }
.footer-links a:hover { color: var(--copper); }

.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity var(--normal) var(--ease), transform var(--normal) var(--ease);
}
.reveal.in, html:not(.js) .reveal { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 90ms; }
.reveal.d2 { transition-delay: 180ms; }
.reveal.d3 { transition-delay: 270ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover { transform: none; }
}