/* ============================================================
   nwc-kit — site styles
   Dark-first, like the rest of the ForgeSworn kits. Slate base
   and mono UI type are the family resemblance; the violet is
   Nostr, the amber is Lightning, and they only ever appear on
   things that are actually about Nostr or actually about money.
   No external fonts, no external anything: the CSP forbids it.
   ============================================================ */

:root {
  --bg-deep: #0a0e17;
  --bg-surface: #111827;
  --bg-raised: #1a2235;
  --bg-hover: #222d42;

  --violet-300: #c4b5fd;
  --violet-400: #a78bfa;
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;

  --amber-300: #fcd34d;
  --amber-400: #fbbf24;

  --ok: #34d399;
  --ok-bg: rgba(52, 211, 153, 0.09);
  --bad: #f87171;
  --bad-bg: rgba(248, 113, 113, 0.09);
  --warn: #fbbf24;
  --warn-bg: rgba(251, 191, 36, 0.08);

  --text-bright: #f8fafc;
  --text-primary: #dbe3ee;
  --text-secondary: #97a3b6;
  --text-muted: #64748b;

  --border: rgba(148, 163, 184, 0.13);
  --border-strong: rgba(148, 163, 184, 0.26);
  --border-violet: rgba(139, 92, 246, 0.42);

  --font-display: Georgia, 'Times New Roman', serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;

  --wrap: 1120px;
  --radius: 10px;
  --radius-sm: 6px;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    --bg-deep: #f6f7fb;
    --bg-surface: #ffffff;
    --bg-raised: #f1f3f9;
    --bg-hover: #e7eaf3;

    --violet-300: #6d28d9;
    --violet-400: #7c3aed;
    --violet-500: #6d28d9;
    --violet-600: #5b21b6;

    --amber-300: #b45309;
    --amber-400: #d97706;

    --ok: #047857;
    --ok-bg: rgba(4, 120, 87, 0.08);
    --bad: #b91c1c;
    --bad-bg: rgba(185, 28, 28, 0.07);
    --warn: #b45309;
    --warn-bg: rgba(180, 83, 9, 0.08);

    --text-bright: #0b1220;
    --text-primary: #1c2534;
    --text-secondary: #4a5568;
    --text-muted: #6b7280;

    --border: rgba(15, 23, 42, 0.11);
    --border-strong: rgba(15, 23, 42, 0.2);
    --border-violet: rgba(109, 40, 217, 0.35);
  }
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* Keep the sticky masthead from sitting on top of a heading jumped to by nav. */
section[id] { scroll-margin-top: 76px; }

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--text-bright);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 12px; }
h3 { font-size: 1.08rem; }

p { margin: 0 0 16px; }

a { color: var(--violet-400); text-decoration: none; }
a:hover { color: var(--violet-300); text-decoration: underline; }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.38em;
}

/* ── masthead ─────────────────────────────────────────────── */

.masthead {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg-deep) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-bright);
}
.wordmark:hover { text-decoration: none; color: var(--text-bright); }
.wordmark svg { color: var(--amber-400); }

.masthead-nav {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.83rem;
}
.masthead-nav a { color: var(--text-secondary); }
.masthead-nav a:hover { color: var(--violet-400); text-decoration: none; }

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

.hero { padding: 84px 0 64px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet-400);
  margin-bottom: 18px;
}

.lede {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 62ch;
}
.lede strong { color: var(--text-bright); font-weight: 600; }

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 28px 0 24px;
}

.install {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  color: var(--text-primary);
  user-select: all;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.badges li {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
}
.badges .badge-warn {
  color: var(--warn);
  border-color: rgba(251, 191, 36, 0.4);
  background: var(--warn-bg);
}

.maturity {
  margin-top: 16px;
  font-size: 0.87rem;
  color: var(--text-muted);
  max-width: 62ch;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  padding: 10px 15px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-raised);
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease;
}
.button:hover { background: var(--bg-hover); border-color: var(--border-violet); text-decoration: none; }
.button:focus-visible { outline: 2px solid var(--violet-500); outline-offset: 2px; }

.button.primary {
  background: var(--violet-600);
  border-color: var(--violet-500);
  color: #ffffff;
  font-weight: 600;
}
.button.primary:hover { background: var(--violet-500); }

.button.danger { border-color: rgba(248, 113, 113, 0.5); color: var(--bad); }
.button.danger:hover { background: var(--bad-bg); border-color: var(--bad); }

.button.ghost { background: transparent; color: var(--text-muted); }

.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }

/* ── strips and grids ─────────────────────────────────────── */

.strip {
  padding: 56px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.grid-3 { display: grid; gap: 32px; grid-template-columns: repeat(3, 1fr); }
.grid-2 { display: grid; gap: 40px; grid-template-columns: repeat(2, 1fr); }

.strip article p { color: var(--text-secondary); font-size: 0.95rem; margin: 0; }

.section-lede {
  color: var(--text-secondary);
  max-width: 68ch;
  margin-bottom: 28px;
}

/* ── demo ─────────────────────────────────────────────────── */

.demo { padding: 72px 0; }

.tablist {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.tablist button {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
}
.tablist button[aria-selected='true'] {
  background: var(--bg-raised);
  color: var(--text-bright);
  box-shadow: inset 0 0 0 1px var(--border-violet);
}

.demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 24px;
  align-items: start;
}

.demo-controls {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.wallet-card {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  margin-bottom: 18px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.wallet-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.wallet-balance {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--amber-400);
}

.field { display: block; margin-bottom: 16px; }
.field > span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.field select,
.field input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 10px 12px;
  background: var(--bg-deep);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
}
.field select:focus,
.field input:focus { outline: 2px solid var(--violet-500); outline-offset: 1px; }

.hint { font-size: 0.83rem; color: var(--text-muted); margin: 0; }

.warning {
  font-size: 0.87rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--warn-bg);
  border: 1px solid rgba(251, 191, 36, 0.4);
  border-left-width: 3px;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 18px;
}
.warning strong { color: var(--warn); display: block; margin-bottom: 4px; }

/* ── protocol tape ────────────────────────────────────────── */

.demo-tape {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.tape-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

#demo-status {
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.78rem;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
}
#demo-status[data-kind='busy'] { color: var(--violet-400); }
#demo-status[data-kind='ok'] { color: var(--ok); }
#demo-status[data-kind='error'] { color: var(--bad); }

.tape {
  height: 560px;
  overflow-y: auto;
  padding: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  scrollbar-width: thin;
}

.tape-placeholder {
  color: var(--text-muted);
  padding: 20px 12px;
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
}

.tape-entry {
  border-left: 2px solid var(--border-strong);
  padding: 7px 0 7px 12px;
  margin: 0 0 5px 6px;
}
.tape-head { display: flex; gap: 9px; align-items: baseline; }
.tape-marker { color: var(--text-muted); flex: none; width: 1ch; }
.tape-title { color: var(--text-primary); }

.tape-detail {
  margin: 6px 0 0;
  padding: 9px 11px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.tape-send { border-left-color: var(--violet-500); }
.tape-send .tape-marker { color: var(--violet-400); }
.tape-recv { border-left-color: var(--amber-400); }
.tape-recv .tape-marker { color: var(--amber-400); }
.tape-ok { border-left-color: var(--ok); }
.tape-ok .tape-marker, .tape-ok .tape-title { color: var(--ok); }
.tape-reject { border-left-color: var(--bad); }
.tape-reject .tape-marker, .tape-reject .tape-title { color: var(--bad); }
.tape-reject .tape-detail { background: var(--bad-bg); border-color: rgba(248, 113, 113, 0.3); color: var(--bad); }

/* ── api and security ─────────────────────────────────────── */

.api, .security { padding: 72px 0; border-top: 1px solid var(--border); }
.api { background: var(--bg-surface); }

.code {
  margin: 0;
  padding: 18px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.6;
}
.code code { background: none; border: none; padding: 0; font-size: inherit; color: var(--text-secondary); }

.api-table { width: 100%; border-collapse: collapse; font-size: 0.87rem; margin-bottom: 18px; }
.api-table td { padding: 8px 0; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.api-table td:first-child { width: 45%; }
.api-table code { background: none; border: none; padding: 0; color: var(--violet-400); }

.note { font-size: 0.87rem; color: var(--text-secondary); }
.note strong { color: var(--amber-400); }

.ticks { list-style: none; margin: 0; padding: 0; font-size: 0.92rem; color: var(--text-secondary); }
.ticks li { padding: 7px 0 7px 26px; position: relative; border-bottom: 1px solid var(--border); }
.ticks li::before {
  content: '×';
  position: absolute;
  left: 6px;
  color: var(--bad);
  font-family: var(--font-mono);
}

.doc-links { display: flex; flex-wrap: wrap; gap: 18px; font-family: var(--font-mono); font-size: 0.84rem; }

/* ── footer ───────────────────────────────────────────────── */

.footer { padding: 36px 0; border-top: 1px solid var(--border); background: var(--bg-surface); }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
  color: var(--text-muted);
}
.footer p { margin: 0; }
.support { display: flex; gap: 18px; font-family: var(--font-mono); font-size: 0.82rem; }

/* ── responsive ───────────────────────────────────────────── */

@media (max-width: 900px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 28px; }
  .demo-grid { grid-template-columns: 1fr; }
  .tape { height: 420px; }
  .hero { padding: 56px 0 44px; }
  .masthead-nav { gap: 14px; font-size: 0.78rem; }
}

@media (max-width: 560px) {
  .masthead-nav a:nth-child(-n + 3) { display: none; }
  .install { font-size: 0.8rem; }
  #demo-status { max-width: 50%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}