/* ============================================================
   tishetishe — design system
   Single stylesheet. CSS variables as tokens.
   Light + dark via prefers-color-scheme, overridable with
   [data-theme="light|dark"] on <html> (progressive enhancement).
   No external resources. System fonts. CSP-friendly.
   ============================================================ */

/* ---------- TOKENS : LIGHT (default / paper) ---------- */
:root {
  /* surfaces */
  --paper:        #f4f3ee;   /* page background, warm paper */
  --surface:      #fbfaf7;   /* cards */
  --surface-2:    #efede6;   /* insets, code blocks */
  --surface-sunk: #e9e7df;

  /* ink */
  --ink:          #1f2429;   /* primary text */
  --ink-2:        #545b63;   /* secondary */
  --ink-3:        #828a92;   /* muted / placeholder */

  /* lines */
  --line:         #e0ddd3;
  --line-strong:  #cfccc0;

  /* accent — dusty teal */
  --accent:       #2f7c75;
  --accent-hover: #28685f;
  --accent-ink:   #ffffff;   /* text on accent */
  --accent-soft:  #dcebe8;   /* tinted bg */
  --accent-line:  #a9cfca;

  /* status (muted, library-quiet — never neon) */
  --ok:        #3a7350;  --ok-soft:    #dfeadf;  --ok-line:    #aecdb4;
  --warn:      #8a6312;  --warn-soft:  #f0e6cf;  --warn-line:  #d8c393;
  --danger:    #a2412c;  --danger-soft:#f1ddd6;  --danger-line:#dcb2a4;
  --info:      var(--accent); --info-soft: var(--accent-soft); --info-line: var(--accent-line);

  /* focus */
  --focus: #1d6f8c;

  /* shape */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-pill: 999px;

  /* elevation (soft, never heavy) */
  --shadow-sm: 0 1px 2px rgba(31,36,41,.05);
  --shadow:    0 1px 3px rgba(31,36,41,.07), 0 6px 18px rgba(31,36,41,.04);

  /* type */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  --fs-xs:  .8125rem;   /* 13 */
  --fs-sm:  .875rem;    /* 14 */
  --fs-base: 1rem;      /* 16 */
  --fs-md:  1.125rem;   /* 18 */
  --fs-lg:  1.375rem;   /* 22 */
  --fs-xl:  1.75rem;    /* 28 */
  --fs-2xl: 2.25rem;    /* 36 */
  --fs-3xl: 3rem;       /* 48 */

  --lh-tight: 1.15;
  --lh:       1.55;

  /* layout */
  --maxw: 1040px;
  --maxw-narrow: 480px;
  --gap: 1.5rem;
}

/* ---------- TOKENS : DARK ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:        #14181b;
    --surface:      #1b2024;
    --surface-2:    #22282d;
    --surface-sunk: #11151800;

    --ink:          #e7eaec;
    --ink-2:        #a3abb2;
    --ink-3:        #727b83;

    --line:         #2c333a;
    --line-strong:  #3a424a;

    --accent:       #5bb3a8;
    --accent-hover: #6cc2b7;
    --accent-ink:   #0c1413;
    --accent-soft:  #1d2e2d;
    --accent-line:  #2f4a47;

    --ok:     #6fb487; --ok-soft:    #1c2a22; --ok-line:    #2f4736;
    --warn:   #cda04a; --warn-soft:  #2c2616; --warn-line:  #4a3f1f;
    --danger: #d8836c; --danger-soft:#2e1c17; --danger-line:#4a2c22;
    --info:   var(--accent); --info-soft: var(--accent-soft); --info-line: var(--accent-line);

    --focus: #7fc7dc;

    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow:    0 1px 3px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.35);
  }
}

/* ---------- TOKENS : explicit dark toggle ---------- */
[data-theme="dark"] {
  --paper:#14181b; --surface:#1b2024; --surface-2:#22282d; --surface-sunk:#0f1316;
  --ink:#e7eaec; --ink-2:#a3abb2; --ink-3:#727b83;
  --line:#2c333a; --line-strong:#3a424a;
  --accent:#5bb3a8; --accent-hover:#6cc2b7; --accent-ink:#0c1413; --accent-soft:#1d2e2d; --accent-line:#2f4a47;
  --ok:#6fb487; --ok-soft:#1c2a22; --ok-line:#2f4736;
  --warn:#cda04a; --warn-soft:#2c2616; --warn-line:#4a3f1f;
  --danger:#d8836c; --danger-soft:#2e1c17; --danger-line:#4a2c22;
  --info:var(--accent); --info-soft:var(--accent-soft); --info-line:var(--accent-line);
  --focus:#7fc7dc;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 1px 3px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.35);
}

/* ============================================================
   BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1,h2,h3,h4 { line-height: var(--lh-tight); font-weight: 600; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
p  { margin: 0 0 1em; }
small { font-size: var(--fs-sm); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.5rem 0; }
::selection { background: var(--accent-soft); }

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

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--surface); color: var(--ink);
  padding: .6rem 1rem; border-radius: var(--r-md); z-index: 100;
  box-shadow: var(--shadow);
}
.skip:focus { left: 1rem; top: 1rem; }

.mono { font-family: var(--font-mono); }
.muted { color: var(--ink-2); }
.subtle { color: var(--ink-3); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.stack > * + * { margin-top: var(--space, 1rem); }
.lede { font-size: var(--fs-md); color: var(--ink-2); }

/* ============================================================
   LAYOUT : topbar / container / footer
   ============================================================ */
.topbar {
  display: flex; align-items: center; gap: 1rem;
  padding: .85rem clamp(1rem, 4vw, 2rem);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(1.1) blur(8px);
}
.topbar__nav { display: flex; gap: .25rem; margin-left: .5rem; flex-wrap: wrap; }
.topbar__nav a {
  color: var(--ink-2); padding: .4rem .6rem; border-radius: var(--r-sm);
  font-size: var(--fs-sm);
}
.topbar__nav a:hover { background: var(--surface-2); text-decoration: none; color: var(--ink); }
.topbar__nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }
.topbar__spacer { flex: 1; }
.topbar__actions { display: flex; align-items: center; gap: .5rem; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem) clamp(1rem, 4vw, 2rem) 4rem;
}
.container--narrow { max-width: var(--maxw-narrow); }
.container--wide { max-width: 1240px; }

.page-head { margin-bottom: 1.75rem; }
.page-head h1 { margin-bottom: .25rem; }

/* ---------- footer / trust ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-2);
  font-size: var(--fs-sm);
}
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 2rem clamp(1rem,4vw,2rem);
  display: grid; gap: 1.5rem;
  grid-template-columns: 1.4fr 1fr 1fr;
}
.footer h5 { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 0 0 .7rem; font-weight: 600; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; }
.footer a { color: var(--ink-2); }
.footer a:hover { color: var(--ink); }
.trust-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .8rem; }
.footer__legal { border-top: 1px solid var(--line); padding: 1rem clamp(1rem,4vw,2rem); max-width: var(--maxw); margin: 0 auto; color: var(--ink-3); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* ============================================================
   WORDMARK + LOGO  — “затухание”
   ============================================================ */
.wordmark {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -.02em;
  font-size: var(--fs-lg);
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  line-height: 1;
  white-space: nowrap;
}
.wordmark:hover { text-decoration: none; }
.wordmark .wm-dot { color: var(--accent); margin: 0 .12em; font-weight: 700; }
/* second word fades into silence */
.wordmark .wm-2 { color: var(--ink-3); }
.wordmark .wm-2 > span { opacity: 1; }
.wordmark .wm-2 > span:nth-child(1){ opacity:.85 }
.wordmark .wm-2 > span:nth-child(2){ opacity:.7 }
.wordmark .wm-2 > span:nth-child(3){ opacity:.55 }
.wordmark .wm-2 > span:nth-child(4){ opacity:.42 }
.wordmark .wm-2 > span:nth-child(5){ opacity:.32 }
.wordmark--lg { font-size: var(--fs-3xl); letter-spacing: -.03em; }
.wordmark--xl { font-size: clamp(2.5rem, 12vw, 5rem); letter-spacing: -.03em; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  --bg: var(--surface); --bd: var(--line-strong); --fg: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font: inherit; font-weight: 550; font-size: var(--fs-sm);
  line-height: 1; cursor: pointer;
  padding: .7rem 1.1rem; border-radius: var(--r-md);
  border: 1px solid var(--bd); background: var(--bg); color: var(--fg);
  transition: background .12s ease, border-color .12s ease, transform .05s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { --bg: var(--accent); --bd: var(--accent); --fg: var(--accent-ink); }
.btn--primary:hover { --bg: var(--accent-hover); --bd: var(--accent-hover); }
.btn--ghost { --bg: transparent; --bd: var(--line-strong); }
.btn--ghost:hover { --bg: var(--surface-2); }
.btn--danger { --bg: transparent; --bd: var(--danger-line); --fg: var(--danger); }
.btn--danger:hover { --bg: var(--danger-soft); }
.btn--quiet { --bg: transparent; --bd: transparent; --fg: var(--ink-2); padding-inline:.5rem; }
.btn--quiet:hover { --fg: var(--ink); --bg: var(--surface-2); }
.btn--lg { padding: .9rem 1.4rem; font-size: var(--fs-base); }
.btn--sm { padding: .45rem .7rem; font-size: var(--fs-xs); }
.btn--block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }

.btn-row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 1rem; }
/* в grid/split карточки — соседи; не сдвигать их вниз (иначе «лесенка») */
.grid > .card + .card, .split > .card + .card { margin-top: 0; }
.card__head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; margin-bottom: 1rem; }
.card__head h2, .card__head h3 { margin: 0; }
.card__title { font-size: var(--fs-md); font-weight: 600; }
.card--quiet { background: transparent; box-shadow: none; }

.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.split { display: grid; grid-template-columns: 1.6fr 1fr; gap: var(--gap); align-items: start; }

/* ============================================================
   FORMS
   ============================================================ */
.field { margin-bottom: 1.1rem; }
.label { display: block; font-size: var(--fs-sm); font-weight: 550; margin-bottom: .4rem; color: var(--ink); }
.label .opt { color: var(--ink-3); font-weight: 400; }
.input, .select, textarea.input {
  width: 100%; font: inherit; font-size: var(--fs-base);
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--r-md);
  padding: .7rem .85rem;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.input::placeholder { color: var(--ink-3); }
.input:focus, .select:focus, textarea.input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.input--mono { font-family: var(--font-mono); letter-spacing: .02em; }
.input--lg { font-size: var(--fs-lg); padding: .85rem 1rem; }
.select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%), linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
  padding-right: 2.2rem;
}
.hint { font-size: var(--fs-sm); color: var(--ink-2); margin-top: .4rem; }
.field--error .input { border-color: var(--danger); }
.field--error .hint { color: var(--danger); }
.input-group { display: flex; gap: .5rem; }
.input-group .input { flex: 1; }

/* radio cards (payment methods, locations) */
.choice-grid { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); }
.choice {
  position: relative; display: flex; gap: .7rem; align-items: flex-start;
  border: 1px solid var(--line-strong); border-radius: var(--r-md);
  padding: .85rem .9rem; cursor: pointer; background: var(--surface);
  transition: border-color .12s, background .12s;
}
.choice:hover { border-color: var(--accent-line); }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice__mark { width: 18px; height: 18px; border-radius: var(--r-pill); border: 2px solid var(--line-strong); flex: none; margin-top: 1px; }
.choice:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.choice:has(input:checked) .choice__mark { border-color: var(--accent); background: var(--accent); box-shadow: inset 0 0 0 3px var(--surface); }
.choice:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
.choice__body { display: grid; gap: .15rem; }
.choice__title { font-weight: 600; font-size: var(--fs-sm); }
.choice__sub { font-size: var(--fs-xs); color: var(--ink-2); }

.switch-inline { display: inline-flex; align-items: center; gap: .55rem; font-size: var(--fs-sm); color: var(--ink-2); }

/* lang switch + theme toggle */
.seg {
  display: inline-flex; border: 1px solid var(--line-strong); border-radius: var(--r-pill);
  overflow: hidden; background: var(--surface);
}
.seg a, .seg button {
  font: inherit; font-size: var(--fs-xs); font-weight: 550;
  padding: .35rem .6rem; border: 0; background: transparent; color: var(--ink-2); cursor: pointer;
}
.seg a[aria-current], .seg button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }
.seg a + a, .seg button + button { border-left: 1px solid var(--line); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 32px; border-radius: var(--r-md);
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink-2); cursor: pointer;
}
.icon-btn:hover { color: var(--ink); background: var(--surface-2); }

/* ============================================================
   STATUS BANNERS
   ============================================================ */
.banner {
  display: flex; gap: .85rem; align-items: flex-start;
  border: 1px solid var(--line); border-left-width: 4px;
  border-radius: var(--r-md); padding: 1rem 1.1rem;
  background: var(--surface);
}
.banner__icon { font-family: var(--font-mono); font-weight: 700; flex: none; line-height: 1.4; }
.banner__body { flex: 1; }
.banner__body strong { display: block; margin-bottom: .15rem; }
.banner__body p { margin: 0; color: var(--ink-2); font-size: var(--fs-sm); }
.banner--ok     { border-color: var(--ok-line);     border-left-color: var(--ok);     background: var(--ok-soft); }
.banner--ok .banner__icon { color: var(--ok); }
.banner--warn   { border-color: var(--warn-line);   border-left-color: var(--warn);   background: var(--warn-soft); }
.banner--warn .banner__icon { color: var(--warn); }
.banner--danger { border-color: var(--danger-line); border-left-color: var(--danger); background: var(--danger-soft); }
.banner--danger .banner__icon { color: var(--danger); }
.banner--info   { border-color: var(--accent-line); border-left-color: var(--accent); background: var(--accent-soft); }
.banner--info .banner__icon { color: var(--accent); }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: var(--fs-xs); font-weight: 600; line-height: 1;
  padding: .3rem .55rem; border-radius: var(--r-pill);
  border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--ink-2);
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge--none::before { display: none; }
.badge--ok     { color: var(--ok);     background: var(--ok-soft);     border-color: var(--ok-line); }
.badge--warn   { color: var(--warn);   background: var(--warn-soft);   border-color: var(--warn-line); }
.badge--danger { color: var(--danger); background: var(--danger-soft); border-color: var(--danger-line); }
.badge--info   { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-line); }

/* ============================================================
   THE TRUST CALLOUT — account number reveal
   ============================================================ */
.callout {
  border: 2px solid var(--warn-line);
  background: var(--warn-soft);
  border-radius: var(--r-lg);
  padding: clamp(1.2rem, 4vw, 1.8rem);
}
.callout__label { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--warn); font-weight: 700; margin-bottom: .6rem; }
.token-display {
  display: flex; gap: .75rem; align-items: center; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: var(--r-md); padding: .9rem 1rem; margin: .4rem 0 1rem;
}
.token-display code {
  font-family: var(--font-mono); font-size: clamp(1.1rem, 4.5vw, 1.6rem);
  font-weight: 600; letter-spacing: .08em; color: var(--ink); flex: 1; word-break: break-all;
}

/* ============================================================
   CODE / CONFIG BLOCK + QR
   ============================================================ */
.codeblock {
  position: relative;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  font-family: var(--font-mono); font-size: var(--fs-sm);
  line-height: 1.65; color: var(--ink);
  overflow: auto;
}
.codeblock pre { margin: 0; padding: 1rem 1.1rem; white-space: pre; }
.codeblock .ph { color: var(--accent); background: var(--accent-soft); border-radius: 3px; padding: 0 .2em; }
.codeblock .cmt { color: var(--ink-3); }
.code-copy { position: absolute; top: .6rem; right: .6rem; }

.qr {
  width: 200px; height: 200px; flex: none;
  display: grid; place-items: center; text-align: center;
  background: #fff; color: #444;
  border: 1px solid var(--line-strong); border-radius: var(--r-md);
  font-size: var(--fs-xs); padding: .5rem;
}
.qr canvas, .qr img { width: 100%; height: 100%; image-rendering: pixelated; border-radius: 4px; }

/* ============================================================
   TABLES (lists of devices, plans, nodes, invoices)
   ============================================================ */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); }
table.tbl { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); min-width: 520px; }
.tbl th, .tbl td { text-align: left; padding: .8rem 1rem; border-bottom: 1px solid var(--line); }
.tbl thead th { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); font-weight: 600; background: var(--surface-2); }
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover { background: var(--surface-2); }
.tbl td.num, .tbl th.num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--font-mono); }
.tbl .row-actions { display: flex; gap: .4rem; justify-content: flex-end; }

/* device row compact list (cabinet) */
.device-list { display: grid; gap: .6rem; }
.device {
  display: flex; align-items: center; gap: 1rem;
  border: 1px solid var(--line); border-radius: var(--r-md);
  padding: .85rem 1rem; background: var(--surface);
}
.device__main { flex: 1; min-width: 0; }
.device__name { font-weight: 600; }
.device__meta { font-size: var(--fs-xs); color: var(--ink-2); font-family: var(--font-mono); }

/* meta key/value rows */
.kv { display: grid; gap: .1rem; }
.kv dt { font-size: var(--fs-xs); color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.kv dd { margin: 0 0 .8rem; font-size: var(--fs-md); font-weight: 600; }
.kv--inline { grid-template-columns: auto 1fr; gap: .3rem 1rem; align-items: baseline; }
.kv--inline dt { align-self: baseline; }
.kv--inline dd { font-size: var(--fs-base); font-weight: 500; margin: 0; }

/* progress / steps */
.steps { display: flex; gap: .5rem; list-style: none; padding: 0; margin: 0 0 1.5rem; flex-wrap: wrap; font-size: var(--fs-sm); }
.steps li { display: flex; align-items: center; gap: .5rem; color: var(--ink-3); }
.steps li::after { content: "›"; margin-left: .5rem; color: var(--line-strong); }
.steps li:last-child::after { content: ""; }
.steps li[aria-current] { color: var(--ink); font-weight: 600; }
.step-n { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-strong); font-size: var(--fs-xs); }
.steps li[aria-current] .step-n { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* confirmations dots (network confirmations) */
.confirm-dots { display: inline-flex; gap: 4px; }
.confirm-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.confirm-dots i.on { background: var(--ok); }

/* ============================================================
   DESIGN-SYSTEM SHOWCASE (index page)
   ============================================================ */
.ds-section { margin: 3rem 0; }
.ds-section > h2 { border-bottom: 1px solid var(--line); padding-bottom: .5rem; margin-bottom: 1.25rem; }
.swatches { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); }
.swatch { border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.swatch__chip { height: 64px; }
.swatch__meta { padding: .5rem .65rem; font-size: var(--fs-xs); }
.swatch__meta b { display: block; font-weight: 600; }
.swatch__meta code { color: var(--ink-2); }
.type-row { display: flex; align-items: baseline; gap: 1rem; padding: .5rem 0; border-bottom: 1px dashed var(--line); }
.type-row span.tag { font-size: var(--fs-xs); color: var(--ink-3); width: 90px; flex: none; font-family: var(--font-mono); }
.demo-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); }
.tile { display: grid; gap: .6rem; }
.tile > .lbl { font-size: var(--fs-xs); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }

.screen-gallery { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); }
.screen-card { display: block; border: 1px solid var(--line); border-radius: var(--r-md); padding: 1rem 1.1rem; background: var(--surface); color: var(--ink); }
.screen-card:hover { border-color: var(--accent-line); text-decoration: none; background: var(--surface-2); }
.screen-card b { display: block; }
.screen-card span { font-size: var(--fs-sm); color: var(--ink-2); }
.screen-card .n { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--accent); }

/* ============================================================
   ADMIN — denser, more “instrument panel”
   ============================================================ */
.admin { --maxw: 1240px; }
.admin .topbar { background: var(--surface); }
.admin-layout { display: grid; grid-template-columns: 200px 1fr; gap: 0; min-height: calc(100vh - 56px); }
.admin-side { border-right: 1px solid var(--line); padding: 1.25rem 1rem; background: var(--surface); }
.admin-side h5 { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 1.25rem 0 .5rem; }
.admin-side nav { display: grid; gap: .15rem; }
.admin-side a { padding: .45rem .6rem; border-radius: var(--r-sm); color: var(--ink-2); font-size: var(--fs-sm); }
.admin-side a:hover { background: var(--surface-2); text-decoration: none; color: var(--ink); }
.admin-side a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.admin-main { padding: clamp(1.25rem,3vw,2rem); }
.stat-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(170px,1fr)); margin-bottom: 1.5rem; }
.stat { border: 1px solid var(--line); border-radius: var(--r-md); padding: 1rem 1.1rem; background: var(--surface); }
.stat .v { font-size: var(--fs-xl); font-weight: 600; font-variant-numeric: tabular-nums; }
.stat .k { font-size: var(--fs-xs); color: var(--ink-3); text-transform: uppercase; letter-spacing: .05em; }
.stat .d { font-size: var(--fs-xs); color: var(--ink-2); margin-top: .2rem; }
.health { display: inline-flex; align-items: center; gap: .4rem; font-size: var(--fs-xs); }
.health::before { content:""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.health--down::before { background: var(--danger); }
.health--warn::before { background: var(--warn); }
.toolbar { display: flex; gap: .6rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.toolbar .grow { flex: 1; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side { border-right: 0; border-bottom: 1px solid var(--line); }
  .admin-side nav { grid-auto-flow: column; overflow-x: auto; }
}
@media (max-width: 560px) {
  .topbar { flex-wrap: wrap; }
  .topbar__nav { order: 3; width: 100%; margin-left: 0; }
  .footer__inner { grid-template-columns: 1fr; }
  .qr { width: 160px; height: 160px; }
  .device { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ============================================================
   LANDING (hybrid: v2 hero + A1 trust-diagram + A2 ledger)
   No cards in body — hairline rhythm. System fonts only.
   ============================================================ */
.lp-hero { display: grid; grid-template-columns: 1.45fr 1fr; gap: clamp(1.5rem, 5vw, 3.5rem); align-items: center; margin-top: clamp(1rem, 4vw, 2.5rem); }
.lp-kicker { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: .2em; text-transform: uppercase; color: var(--accent); margin-bottom: 1.1rem; }
.lp-hero h1 { font-size: clamp(2rem, 5.5vw, 3.25rem); letter-spacing: -.03em; margin: .9rem 0 0; max-width: 16ch; }
.lp-hero .lede { max-width: 46ch; margin-top: 1rem; }
.lp-hero .btn-row { margin-top: 1.6rem; }
.lp-methods { font-size: var(--fs-xs); color: var(--ink-3); margin-top: 1rem; }

.proof { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(1.2rem, 3vw, 1.6rem); }
.proof__label { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .8rem; }
.proof__num { font-family: var(--font-mono); font-size: clamp(1.2rem, 3.2vw, 1.6rem); font-weight: 600; letter-spacing: .06em; color: var(--ink); line-height: 1.35; font-variant-numeric: tabular-nums; }
.proof__note { font-size: var(--fs-sm); color: var(--ink-2); margin: .85rem 0 0; }
.proof__note b { color: var(--ink); font-weight: 600; }

.lp-principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-strong); }
.lp-principle { padding: 1.5rem 1.5rem 1.4rem; }
.lp-principle:first-child { padding-left: 0; }
.lp-principle + .lp-principle { border-left: 1px solid var(--line); }
.lp-principle .n { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--accent); letter-spacing: .12em; }
.lp-principle h3 { font-size: var(--fs-md); margin: .55rem 0 .4rem; }
.lp-principle p { margin: 0; }

/* A1 trust diagram — single hairline vocabulary + colour carries meaning */
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1.1fr; gap: 1rem; align-items: stretch; margin-top: 1rem; }
.flow__node { border: 1px solid var(--line-strong); border-radius: var(--r-md); padding: 1.1rem 1.2rem; background: var(--surface); }
.flow__node--accent { border-color: var(--accent-line); background: var(--accent-soft); }
.flow__node .tag { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .08em; text-transform: uppercase; }
.flow__node h4 { margin: .5rem 0 .3rem; font-size: var(--fs-md); }
.flow__node p { margin: 0; font-size: var(--fs-sm); color: var(--ink-2); }
.flow__link { align-self: center; display: grid; gap: .35rem; min-width: 116px; text-align: center; }
.flow__link .cap { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--ink-3); line-height: 1.3; }
.flow__link .wire { height: 0; border-top: 1px solid var(--line-strong); position: relative; }
.flow__link .wire::after { content: "›"; position: absolute; right: -3px; top: -.9em; font-family: var(--font-mono); color: var(--line-strong); }
.flow__link--accent .cap { color: var(--accent); }
.flow__link--accent .wire { border-top-color: var(--accent); }
.flow__link--accent .wire::after { color: var(--accent); }
.flow__stays { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--ink-3); margin-top: 1rem; }
.flow__stays s { color: var(--ink-3); }

/* A2 ledger rows (how / verifiable trust / pricing as a datasheet) */
.ledger { border-top: 1px solid var(--line-strong); }
.ledger__row { display: grid; grid-template-columns: 56px 1fr; gap: 1.25rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.ledger__row .n { font-family: var(--font-mono); font-size: var(--fs-xs); color: var(--accent); letter-spacing: .1em; padding-top: .2rem; }
.ledger__row h4 { margin: 0 0 .3rem; font-size: var(--fs-md); }
.ledger__row p { margin: 0; color: var(--ink-2); font-size: var(--fs-sm); }

.price-ledger { border-top: 1px solid var(--line-strong); }
.price-row { display: grid; grid-template-columns: 1fr auto auto; gap: 1.25rem; align-items: center; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.price-row .term { font-weight: 600; }
.price-row .meta { color: var(--ink-2); font-size: var(--fs-sm); margin-top: .15rem; }
.price-row .amt { font-family: var(--font-mono); font-size: var(--fs-xl); font-weight: 600; font-variant-numeric: tabular-nums; }
.price-row--best .amt { color: var(--accent); }
.price-row .btn { white-space: nowrap; }

@media (max-width: 860px) {
  .lp-hero { grid-template-columns: 1fr; }
  .lp-principles { grid-template-columns: 1fr; }
  .lp-principle { padding: 1.3rem 0; }
  .lp-principle:first-child { padding-top: 0; }
  .lp-principle + .lp-principle { border-left: 0; border-top: 1px solid var(--line); }
  .flow { grid-template-columns: 1fr; }
  .flow__link { min-width: 0; padding: .5rem 0; }
  .flow__link .wire { display: none; }
  .price-row { grid-template-columns: 1fr auto; }
  .price-row .amt { text-align: right; }
  .price-row .btn { grid-column: 1 / -1; }
}

/* print: clean, ink-on-paper */
@media print {
  .topbar, .footer, .code-copy, .btn { display: none !important; }
  body { background: #fff; color: #000; }
}
