/* Проявка — darkroom / safelight */

:root {
  --bg: #110e0b;
  --bg-2: #1a1511;
  --tray: #241e18;
  --fg: #efe6d4;
  --mute: color-mix(in oklab, var(--fg) 62%, var(--bg));
  --accent: #e39a3c;
  --accent-ink: #1a1208;
  --line: color-mix(in oklab, var(--fg) 16%, var(--bg));
  --display: "Syne", ui-sans-serif, sans-serif;
  --text: "Figtree", ui-sans-serif, system-ui, sans-serif;
  --mono: "Spline Sans Mono", ui-monospace, monospace;
  --pad: clamp(1.1rem, 4.2vw, 2.4rem);
  --max: 68rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 480ms;
  --z-nav: 20;
  --z-cookie: 40;
}

@layer reset, base, layout, components;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; max-width: 100%; overflow-x: clip; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 5.5rem; }
  img { display: block; max-width: 100%; height: auto; }
  a { color: inherit; text-decoration: none; }
  p, h1, h2, h3, ul, ol, dl, table { margin: 0; }
  ul, ol { padding: 0; list-style: none; }
  button { font: inherit; }
  [hidden] { display: none !important; }
}

@layer base {
  body.lab {
    position: relative;
    font-family: var(--text);
    color: var(--fg);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    padding-bottom: env(safe-area-inset-bottom);
    background-image:
      radial-gradient(120% 80% at 10% -10%, rgba(227, 154, 60, 0.14), transparent 42%),
      radial-gradient(90% 50% at 100% 0%, rgba(239, 230, 212, 0.05), transparent 40%);
  }

  body.lab::before {
    content: "";
    pointer-events: none;
    position: fixed;
    inset: 0;
    z-index: 1;
    opacity: 0.09;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }

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

  h1, h2, strong { overflow-wrap: break-word; }

  .skip {
    position: absolute;
    left: -999px;
  }
  .skip:focus {
    left: 12px;
    top: 12px;
    z-index: 50;
    background: var(--accent);
    color: var(--accent-ink);
    padding: 0.5rem 0.75rem;
  }
}

@layer layout {
  .film-edge {
    pointer-events: none;
    position: fixed;
    z-index: 2;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1.35rem;
    background:
      repeating-linear-gradient(
        to bottom,
        var(--bg) 0 10px,
        var(--accent) 10px 18px,
        var(--bg) 18px 28px
      );
    box-shadow: 8px 0 28px rgba(0, 0, 0, 0.35);
  }

  .mast {
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1.25rem;
    padding: 0.85rem var(--pad) 0.85rem calc(var(--pad) + 0.6rem);
    background: color-mix(in oklab, var(--bg) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }

  .word {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-width: 0;
  }
  .word img {
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--line);
  }
  .word strong {
    display: block;
    font-family: var(--display);
    font-size: clamp(1.35rem, 3vw, 1.7rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
  }
  .word em {
    font-style: normal;
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mute);
  }

  .mast-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.2rem 1rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .mast-nav a {
    min-height: 2.5rem;
    display: inline-flex;
    align-items: center;
    color: var(--mute);
  }
  .mast-nav a:hover,
  .mast-nav a.is-active {
    color: var(--accent);
  }

  main {
    position: relative;
    z-index: 3;
    padding-inline: calc(var(--pad) + 0.5rem) var(--pad);
    padding-bottom: 4rem;
  }

  .tick {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.7rem;
  }

  h2 {
    font-family: var(--display);
    font-size: clamp(1.55rem, 3.4vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.12;
    max-width: 18ch;
  }
}

@layer components {
  .hero-well {
    min-height: min(88svh, 46rem);
    display: grid;
    align-content: end;
    padding: 4.5rem 0 3.2rem;
    max-width: var(--max);
    margin-inline: auto;
  }
  .hero-well h1 {
    font-family: var(--display);
    font-size: clamp(4.2rem, 16vw, 9.5rem);
    font-weight: 800;
    letter-spacing: -0.07em;
    line-height: 0.84;
    max-width: none;
  }
  .lede {
    margin-top: 1.4rem;
    max-width: 34ch;
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.5;
    color: var(--mute);
  }
  .go {
    margin-top: 1.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.15rem;
    padding: 0 1.4rem;
    width: fit-content;
    background: var(--accent);
    color: var(--accent-ink);
    font-family: var(--display);
    font-weight: 700;
    letter-spacing: -0.02em;
  }
  .go:hover { filter: brightness(1.08); }

  .steps-rail,
  .lab-bay,
  .cap-row,
  .io-sheet,
  .use-line,
  .note-col,
  .ask-stack {
    max-width: var(--max);
    margin-inline: auto;
    margin-top: clamp(3.5rem, 8vw, 6.5rem);
    scroll-margin-top: 5.5rem;
  }

  .steps-rail ol {
    margin-top: 1.75rem;
    display: grid;
    gap: 0;
    border-top: 1px solid var(--line);
  }
  .steps-rail li {
    display: grid;
    grid-template-columns: 4.5rem 1fr;
    gap: 1rem;
    padding: 1.15rem 0;
    border-bottom: 1px solid var(--line);
  }
  .steps-rail li span {
    font-family: var(--mono);
    color: var(--accent);
    font-size: 0.85rem;
  }
  .steps-rail strong {
    font-family: var(--display);
    font-size: 1.25rem;
  }
  .steps-rail p {
    margin-top: 0.35rem;
    color: var(--mute);
    line-height: 1.55;
    max-width: 48ch;
  }

  .lab-bay {
    background: var(--bg-2);
    border: 1px solid var(--line);
    padding: clamp(1rem, 3vw, 1.5rem);
  }
  .lab-bay__head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem 1.5rem;
    margin-bottom: 1.1rem;
  }
  .lab-dial {
    display: flex;
    gap: 1.25rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .lab-dial dt { color: var(--mute); }
  .lab-dial dd {
    margin: 0.2rem 0 0;
    font-size: 1.05rem;
    color: var(--accent);
    letter-spacing: 0;
    text-transform: none;
  }
  .spec-pulse { animation: pulse 0.45s var(--ease); }

  .mode-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
  }
  .mode-tab {
    min-height: 3rem;
    padding: 0.55rem 0.5rem;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--mute);
    font-family: var(--mono);
    font-size: clamp(0.68rem, 2.6vw, 0.8rem);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
  }
  .mode-tab.is-on {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
  }

  .scan-stage { padding-top: 0.9rem; }

  .view {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    min-height: min(72vw, 24rem);
    background: #070605;
    border: 1px solid var(--line);
  }
  .view video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .view-idle {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    min-height: inherit;
    padding: 1.5rem 1rem;
    color: color-mix(in oklab, var(--fg) 80%, transparent);
    text-align: center;
    line-height: 1.55;
    font-size: 0.95rem;
  }
  .view-idle p { max-width: 30ch; margin: 0; }
  .view.is-live .view-idle { display: none; }

  .frame {
    pointer-events: none;
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    width: min(68%, 16rem);
    aspect-ratio: 1 / 1.414;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 999px rgba(0, 0, 0, 0.52);
  }
  .frame span {
    position: absolute;
    width: 1.25rem;
    height: 1.25rem;
    border-color: var(--accent);
    border-style: solid;
  }
  .frame span:nth-child(1) { top: 0; left: 0; border-width: 3px 0 0 3px; }
  .frame span:nth-child(2) { top: 0; right: 0; border-width: 3px 3px 0 0; }
  .frame span:nth-child(3) { bottom: 0; left: 0; border-width: 0 0 3px 3px; }
  .frame span:nth-child(4) { bottom: 0; right: 0; border-width: 0 3px 3px 0; }

  .qr-aim {
    pointer-events: none;
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    width: min(52%, 13rem);
    aspect-ratio: 1;
    transform: translate(-50%, -50%);
    border: 2px solid var(--accent);
    box-shadow: 0 0 0 999px rgba(0, 0, 0, 0.52);
  }

  .view.is-live .frame,
  .view.is-live .qr-aim { display: block; }

  .scan-status {
    min-height: 1.35em;
    margin-top: 0.75rem;
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--mute);
    line-height: 1.45;
  }

  .scan-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.85rem;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 3.15rem;
    padding: 0 1.1rem;
    border: 1px solid var(--accent);
    border-radius: 0;
    font-family: var(--display);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--accent);
    color: var(--accent-ink);
    cursor: pointer;
  }
  .btn:hover { filter: brightness(1.06); }
  .btn-ghost {
    background: transparent;
    color: var(--fg);
    border-color: var(--line);
  }
  .btn-ghost:hover {
    border-color: var(--fg);
    filter: none;
  }
  .btn-save {
    background: var(--fg);
    border-color: var(--fg);
    color: var(--bg);
  }
  .file-btn { position: relative; cursor: pointer; }
  .file-btn input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  .pages {
    margin-top: 1.15rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }
  .pages-label {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .page-list {
    display: flex;
    gap: 0.55rem;
    overflow-x: auto;
    margin: 0.75rem 0 0.9rem;
    padding-bottom: 0.25rem;
  }
  .page-list li { position: relative; flex: 0 0 auto; }
  .page-list img {
    width: 4.5rem;
    height: 6.2rem;
    object-fit: cover;
    border: 1px solid var(--line);
    background: var(--tray);
  }
  .page-del {
    position: absolute;
    top: 0.2rem;
    right: 0.2rem;
    width: 1.45rem;
    height: 1.45rem;
    border: 0;
    background: var(--accent);
    color: var(--accent-ink);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
  }

  .qr-out {
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--line);
    background: var(--tray);
  }
  .qr-kind {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  .qr-value {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    line-height: 1.55;
    overflow-wrap: anywhere;
    color: var(--mute);
  }
  .qr-out__actions {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-top: 0.85rem;
  }

  .cap-row ul {
    margin-top: 1.5rem;
    display: grid;
    gap: 0.85rem;
    max-width: 46rem;
  }
  .cap-row li {
    padding-left: 1.1rem;
    border-left: 2px solid var(--accent);
    color: var(--mute);
    line-height: 1.55;
  }

  .io-sheet table {
    margin-top: 1.5rem;
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
  }
  .io-sheet th,
  .io-sheet td {
    text-align: left;
    padding: 0.85rem 0.75rem 0.85rem 0;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
    width: 50%;
  }
  .io-sheet th {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 500;
  }
  .io-sheet td { color: var(--mute); line-height: 1.45; }

  .use-line ul {
    margin-top: 1.6rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem 1.4rem;
  }
  .use-line li {
    font-size: 1.05rem;
    line-height: 1.45;
    max-width: 22ch;
  }

  .note-col p {
    margin-top: 1.4rem;
    max-width: 42rem;
    font-size: clamp(1.15rem, 2.4vw, 1.45rem);
    line-height: 1.45;
    color: var(--mute);
  }

  .ask-stack dl {
    margin-top: 1.5rem;
    max-width: 44rem;
  }
  .ask-stack div {
    padding: 1rem 0;
    border-top: 1px solid var(--line);
  }
  .ask-stack div:last-child { border-bottom: 1px solid var(--line); }
  .ask-stack dt {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.15rem;
  }
  .ask-stack dd {
    margin: 0.4rem 0 0;
    color: var(--mute);
    line-height: 1.55;
  }
  .ask-stack a { text-decoration: underline; text-underline-offset: 0.2em; }

  .baseboard {
    position: relative;
    z-index: 3;
    margin-top: 4rem;
    padding: 2rem var(--pad) 2.4rem calc(var(--pad) + 0.6rem);
    border-top: 1px solid var(--line);
    background: #0c0a08;
  }
  .baseboard-top {
    display: grid;
    gap: 1.5rem;
  }
  .baseboard .brand-name {
    font-family: var(--display);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.05em;
  }
  .baseboard .brand-tag {
    margin-top: 0.5rem;
    max-width: 42ch;
    color: var(--mute);
    line-height: 1.5;
  }
  .baseboard .contacts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.4rem;
    margin-top: 0.9rem;
    font-family: var(--mono);
    font-size: 0.85rem;
  }
  .baseboard .contacts a { color: var(--accent); }
  .baseboard nav h3 {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mute);
    margin-bottom: 0.55rem;
  }
  .baseboard nav h3:not(:first-of-type) { margin-top: 1rem; }
  .baseboard nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 1rem;
  }
  .baseboard nav a {
    min-height: 2.4rem;
    display: inline-flex;
    align-items: center;
    text-decoration: underline;
    text-underline-offset: 0.18em;
  }
  .req-line {
    margin-top: 1.6rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    color: var(--mute);
    display: grid;
    gap: 0.35rem;
    line-height: 1.5;
  }
  .req-line a { color: var(--fg); }
  .base-end {
    margin-top: 1.2rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.6rem 1rem;
    color: var(--mute);
    font-size: 0.82rem;
  }
  .base-end a { text-decoration: underline; text-underline-offset: 0.16em; }

  .cookie-overlay {
    position: fixed;
    z-index: var(--z-cookie);
    inset: auto 0 0 0;
    padding: 0.85rem var(--pad) calc(0.85rem + env(safe-area-inset-bottom));
    background: color-mix(in oklab, var(--bg) 92%, transparent);
    border-top: 1px solid var(--line);
    backdrop-filter: blur(12px);
  }
  .cookie-card {
    max-width: var(--max);
    margin-inline: auto;
  }
  .cookie-card h2 {
    font-size: 1.35rem;
    max-width: none;
  }
  .cookie-card p {
    margin: 0.5rem 0 1rem;
    color: var(--mute);
    max-width: 52ch;
    line-height: 1.5;
  }
  .cookie-card a { text-decoration: underline; }
  .cookie-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .cookie-actions button {
    min-height: 2.8rem;
    padding: 0 1rem;
    cursor: pointer;
    border: 1px solid var(--line);
  }
  .btn-necessary {
    background: transparent;
    color: var(--fg);
  }
  .btn-accept {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    font-weight: 700;
  }

  html.cookie-open { padding-bottom: 8rem; }

  .rise {
    opacity: 0;
    transform: translateY(1.1rem);
    transition: opacity var(--dur) var(--ease) var(--reveal-delay, 0s),
      transform var(--dur) var(--ease) var(--reveal-delay, 0s);
  }
  .rise.is-visible {
    opacity: 1;
    transform: none;
  }

  body.legal {
    font-family: var(--text);
    color: var(--fg);
    background: var(--bg);
    min-height: 100svh;
  }
  body.legal .legal-top {
    padding: 1rem var(--pad);
    border-bottom: 1px solid var(--line);
  }
  body.legal .doc {
    max-width: 42rem;
    margin: 0 auto;
    padding: 2.2rem var(--pad) 4rem;
  }
  body.legal h1 {
    font-family: var(--display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    letter-spacing: -0.04em;
  }
  body.legal .doc-meta {
    margin: 0.7rem 0 1.6rem;
    color: var(--mute);
    font-family: var(--mono);
    font-size: 0.78rem;
  }
  body.legal .doc-body {
    display: grid;
    gap: 0.9rem;
    line-height: 1.6;
    color: var(--mute);
  }
  body.legal .doc-body h2 {
    margin-top: 0.6rem;
    font-size: 1.2rem;
    color: var(--fg);
    max-width: none;
  }
  body.legal a { text-decoration: underline; text-underline-offset: 0.18em; }
}

@media (min-width: 860px) {
  .baseboard-top {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
  .scan-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .scan-actions .btn { width: auto; min-width: 12rem; }
  .qr-out__actions { flex-direction: row; }
  .qr-out__actions .btn { width: auto; }
}

@media (max-width: 700px) {
  .film-edge { width: 0.7rem; }
  .hero-well { min-height: 78svh; padding-top: 3rem; }
  .steps-rail li { grid-template-columns: 2.4rem 1fr; }
  .io-sheet table,
  .io-sheet tbody,
  .io-sheet tr,
  .io-sheet th,
  .io-sheet td { display: block; width: 100%; }
  .io-sheet td { border-bottom: 0; padding-top: 0.2rem; }
  .io-sheet tr { padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .spec-pulse { animation: none; }
}

@keyframes pulse {
  from { color: var(--fg); }
  to { color: var(--accent); }
}