/* ---------- Theme tokens ---------- */
:root {
  --bg: oklch(98% 0.008 80);
  --bg-elev: oklch(96% 0.01 80);
  --ink: oklch(22% 0.02 60);
  --ink-soft: oklch(45% 0.02 60);
  --ink-faint: oklch(62% 0.015 60);
  --rule: oklch(88% 0.012 70);
  --rule-strong: oklch(78% 0.015 70);
  --accent: oklch(58% 0.14 40);
  --accent-soft: oklch(58% 0.14 40 / 0.12);
  --code-bg: oklch(94% 0.012 75);
  --code-ink: oklch(28% 0.02 60);

  --serif: "Spectral", "Source Serif Pro", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;

  --maxw: 1100px;
  --pad: clamp(20px, 4vw, 40px);
}

[data-theme="dark"] {
  --bg: oklch(18% 0.012 60);
  --bg-elev: oklch(22% 0.014 60);
  --ink: oklch(94% 0.01 80);
  --ink-soft: oklch(72% 0.015 75);
  --ink-faint: oklch(55% 0.015 70);
  --rule: oklch(30% 0.015 60);
  --rule-strong: oklch(40% 0.018 60);
  --code-bg: oklch(24% 0.014 60);
  --code-ink: oklch(90% 0.01 80);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.25s ease, color 0.25s ease;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

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

/* ---------- Layout chrome ---------- */
.shell { min-height: 100vh; display: flex; flex-direction: column; }

.topnav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 28px;
  padding: 14px var(--pad);
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.brand {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer;
}
.brand .dot {
  width: 8px; height: 8px; border-radius: 2px;
  background: var(--accent);
  display: inline-block;
}
.navlinks { display: flex; gap: 22px; flex: 1; }
.navlink {
  font-size: 14px;
  color: var(--ink-soft);
  cursor: pointer;
  position: relative;
  padding: 4px 0;
}
.navlink:hover { color: var(--ink); }
.navlink.active { color: var(--ink); }
.navlink.active::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -15px;
  height: 1px; background: var(--ink);
}
.navtools { display: flex; align-items: center; gap: 12px; }
.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s ease;
}
.iconbtn:hover { color: var(--ink); border-color: var(--rule-strong); }

.starbadge {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 10px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s ease;
}
.starbadge:hover { color: var(--ink); border-color: var(--rule-strong); }
.starbadge .sep { color: var(--ink-faint); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 38px; padding: 0 16px;
  border-radius: 6px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn:hover { border-color: var(--ink); }
.btn-primary {
  background: var(--ink); color: var(--bg); border-color: var(--ink);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: white; }

/* ---------- Landing ---------- */
.landing {
  flex: 1;
  display: flex; flex-direction: column;
  padding: 0 var(--pad);
}
.landing-inner {
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
  padding: clamp(60px, 12vh, 140px) 0 60px;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0 0 20px;
  text-wrap: balance;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.hero-desc {
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 0 36px;
  text-wrap: pretty;
}
.hero-cta { display: flex; gap: 12px; margin-bottom: 48px; }

.donate-row {
  margin-top: 100px;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}
.donate-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.donate-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.donate-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg-elev);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s ease;
}
.donate-btn:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.donate-btn .sym {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 12px;
}
.donate-btn .sym.btc { background: #f7931a; color: white; }
.donate-btn .sym.eth { background: #5a72ad; color: white; }

/* ---------- Code blocks ---------- */
.code {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--code-ink);
  overflow: hidden;
}
.code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklch, var(--code-bg) 70%, var(--bg));
}
.code-lang {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.copy-btn:hover { color: var(--ink); background: color-mix(in oklch, var(--bg) 50%, transparent); }
.copy-btn.copied { color: var(--accent); }
.code pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
}
.code .prompt { color: var(--ink-faint); user-select: none; }
.code .cmd { color: var(--code-ink); }
.code .flag { color: var(--accent); }
.code .str { color: oklch(50% 0.13 150); }
.code .kw { color: oklch(48% 0.16 280); font-weight: 500; }
.code .com { color: var(--ink-faint); font-style: italic; }
.code .fn { color: oklch(52% 0.13 220); }
.code .num { color: oklch(55% 0.14 30); }

[data-theme="dark"] .code .str { color: oklch(75% 0.14 150); }
[data-theme="dark"] .code .kw { color: oklch(72% 0.15 280); }
[data-theme="dark"] .code .fn { color: oklch(72% 0.13 220); }
[data-theme="dark"] .code .num { color: oklch(75% 0.14 30); }

.install-code { margin: 8px 0 0; }

/* ---------- Docs ---------- */
.docs {
  flex: 1;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--pad);
}
.docs-side {
  position: sticky;
  top: 60px;
  align-self: flex-start;
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  padding: 36px 28px 36px 0;
  border-right: 1px solid var(--rule);
}
.docs-search {
  position: relative;
  margin-bottom: 22px;
}
.docs-search input {
  width: 100%;
  padding: 8px 10px 8px 30px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg-elev);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s ease;
}
.docs-search input:focus { border-color: var(--accent); }
.docs-search .magnify {
  position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
  color: var(--ink-faint);
  pointer-events: none;
}
.docs-search kbd {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 10px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--ink-faint);
}

.docs-nav-section {
  margin-bottom: 18px;
}
.docs-nav-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 8px;
  padding: 0 8px;
}
.docs-nav-link {
  display: block;
  padding: 5px 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 4px;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: all 0.15s ease;
}
.docs-nav-link:hover { color: var(--ink); background: var(--bg-elev); }
.docs-nav-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
}
.docs-nav-link.dim {
  opacity: 0.35;
}

.docs-main {
  padding: 36px 0 36px 36px;
  min-width: 0;
}
.docs-main h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
}
.docs-main h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  margin: 56px 0 12px;
  letter-spacing: -0.01em;
  scroll-margin-top: 80px;
}
.docs-main h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15px;
  margin: 28px 0 8px;
  letter-spacing: 0;
}
.docs-main p a,
.docs-main li a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.docs-main p code,
.docs-main li code {
  background: rgba(0,0,0,0.07);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 0.88em;
  font-family: var(--mono);
}
[data-theme="dark"] .docs-main p code,
[data-theme="dark"] .docs-main li code {
  background: rgba(255,255,255,0.1);
}
.docs-main p {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  max-width: 65ch;
  margin: 0 0 14px;
  text-wrap: pretty;
}
.docs-main p.lead {
  font-size: 19px;
  color: var(--ink-soft);
  margin-bottom: 28px;
}
.docs-main ul {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  padding-left: 22px;
  margin: 0 0 14px;
  max-width: 65ch;
}
.docs-main li { margin-bottom: 6px; }
.docs-main code:not(pre code) {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--rule);
}
.docs-main .code { margin: 14px 0 22px; max-width: 65ch; }
.docs-main hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
}
.docs-meta {
  display: flex; gap: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.docs-meta .dot { color: var(--rule-strong); }

/* ---------- About ---------- */
.about {
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
  padding: clamp(60px, 10vh, 100px) var(--pad) 80px;
}
.about h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
}
.about p {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink);
  margin: 0 0 18px;
  text-wrap: pretty;
}
.about p.muted { color: var(--ink-soft); }
.about .factsheet {
  margin-top: 56px;
  border-top: 1px solid var(--rule);
  padding-top: 24px;
  display: grid;
  grid-template-columns: 140px 1fr;
  row-gap: 14px;
  column-gap: 24px;
  font-family: var(--mono);
  font-size: 13px;
}
.about .factsheet dt {
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 11px;
  padding-top: 3px;
}
.about .factsheet dd { margin: 0; color: var(--ink); }
.about .factsheet dd a { border-bottom: 1px solid var(--rule-strong); }
.about .factsheet dd a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: color-mix(in oklch, black 40%, transparent);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  animation: fade 0.18s ease;
  padding: 20px;
}
.modal {
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 28px;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 20px 60px -10px color-mix(in oklch, black 30%, transparent);
  animation: pop 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.modal-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  margin: 0;
  display: flex; align-items: center; gap: 10px;
}
.modal-title .sym {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 13px;
}
.modal-title .sym.btc { background: #f7931a; color: white; }
.modal-title .sym.eth { background: #5a72ad; color: white; }
.modal .qr {
  background: white;
  border-radius: 8px;
  padding: 16px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.modal .qr svg { display: block; }
.modal .addr {
  display: flex; align-items: center; gap: 8px;
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink);
  word-break: break-all;
}
.modal .addr button {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-soft);
  cursor: pointer;
}
.modal .addr button:hover { color: var(--ink); border-color: var(--rule-strong); }
.modal .addr button.copied { color: var(--accent); border-color: var(--accent); }
.modal .note {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  margin: 16px 0 0;
  line-height: 1.5;
}

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  z-index: 200;
  animation: toastin 0.2s ease;
}
@keyframes toastin {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ---------- Utility ---------- */
.kbd {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--ink-soft);
}

@media (max-width: 760px) {
  .docs { grid-template-columns: 1fr; }
  .docs-side { position: static; max-height: none; border-right: none; border-bottom: 1px solid var(--rule); padding: 20px 0; }
  .docs-main { padding: 24px 0; }
  .navlinks { gap: 14px; }
  .starbadge { display: none; }
}