/* Senko: senko.fi landing site
   Dark crypto aesthetic, fox-amber accent. System fonts only.
   Zero external references (no @import, no url() to remote, no CDN). */

:root {
  --bg:        #0b0907;
  --bg-alt:    #110d08;
  --surface:   #1a1611;
  --surface-2: #221c14;
  --surface-3: #2a2218;
  --border:    #2e2719;
  --border-2:  #3b321f;
  --text:      #f3eee5;
  --muted:     #bcb09b;
  --faint:     #9c917d;
  --accent:    #f59140; /* fox amber */
  --accent-2:  #ffb866;
  --accent-3:  #ffd29a;
  --accent-dim:#3a2a16;
  --ok:        #6fce9f;

  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      1120px;
  --gutter:    clamp(1.1rem, 4vw, 2rem);

  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
          "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 560px at 82% -10%, rgba(245,145,64,0.16), transparent 60%),
    radial-gradient(900px 460px at 6% 2%, rgba(255,184,102,0.07), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: -999px; top: 0;
  background: var(--accent);
  color: #1a1207;
  padding: 0.6rem 1rem;
  z-index: 100;
  font-weight: 700;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; top: 0; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,9,7,0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 var(--border);
}
.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--accent); display: inline-flex; align-items: center; }
.brand-mark img { display: block; width: 28px; height: 28px; object-fit: contain; }
.footer-brand .brand-mark img { width: 22px; height: 22px; }
.brand-name { display: inline-flex; align-items: center; }
.brand-ticker {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-3);
  background: var(--accent-dim);
  border: 1px solid var(--border-2);
  padding: 0.16rem 0.45rem;
  border-radius: 999px;
  margin-left: 0.55rem;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  font-size: 0.94rem;
}
.nav-links a { color: var(--muted); font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ---------- hero ---------- */
.hero { padding: clamp(2.8rem, 7vw, 5.5rem) var(--gutter) clamp(1.5rem, 4vw, 3rem); }
.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}
.eyebrow {
  color: var(--accent-3);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
  font-weight: 600;
}
.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.1rem);
  margin: 0 0 1.1rem;
  max-width: 14ch;
  color: var(--text);
}
.lede {
  font-size: clamp(1.06rem, 1.6vw, 1.28rem);
  color: var(--muted);
  max-width: 56ch;
}
.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin: 1.9rem 0 1.9rem;
}
.btn {
  display: inline-block;
  padding: 0.82rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #1a1207;
  box-shadow: 0 8px 24px -10px rgba(245,145,64,0.6);
}
.btn-primary:hover { background: linear-gradient(180deg, #ffc880, var(--accent-2)); }
.btn-ghost {
  border-color: var(--border-2);
  color: var(--text);
  background: var(--surface);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-3); }
/* the whitepaper URL is not published yet: render the CTA honestly, no jump */
.btn-soon {
  cursor: default;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.btn-soon:hover { transform: none; }
.btn-soon-tag {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(26,18,7,0.45);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
}

.hero-badges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.hero-badges li {
  font-size: 0.84rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.42rem 0.95rem;
}

/* hero visual panel */
.hero-panel {
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 1.6rem 1.6rem 1.3rem;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7);
}
.hero-mark {
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 46%, rgba(245,145,64,0.22), rgba(245,145,64,0.06) 55%, rgba(245,145,64,0) 72%);
}
.hero-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.hero-panel-cap {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  color: var(--faint);
  text-align: center;
  letter-spacing: 0.02em;
}

/* relocated block-lattice diagram (in How it works) */
.lattice-fig { margin: 0 0 2.4rem; }
.lattice {
  aspect-ratio: 264 / 200;
  width: 100%;
  max-width: 620px;
  margin: 0 auto;
  display: block;
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
}
.lattice-cap {
  margin: 0.9rem auto 0;
  max-width: 620px;
  font-size: 0.88rem;
  color: var(--faint);
  text-align: center;
}

/* stat band */
.stat-band {
  max-width: var(--maxw);
  margin: clamp(2rem, 5vw, 3.2rem) auto 0;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.stat-band li {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  padding: 1.3rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.stat-k {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  color: var(--accent-3);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat-v { font-size: 0.85rem; color: var(--muted); line-height: 1.45; }

/* ---------- sections ---------- */
.section { padding: clamp(3.2rem, 7vw, 5.5rem) var(--gutter); }
.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-inner { max-width: var(--maxw); margin: 0 auto; }
.kicker {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0 0 0.9rem;
}
.section h2 {
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  margin: 0 0 0.7rem;
  max-width: 22ch;
}
.section-lede {
  color: var(--muted);
  font-size: clamp(1.02rem, 1.4vw, 1.15rem);
  max-width: 64ch;
  margin-bottom: 2.4rem;
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
}
.cards-feature { grid-template-columns: repeat(3, 1fr); }
.card {
  position: relative;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
  box-shadow: 0 22px 40px -28px rgba(0,0,0,0.8);
}
.card-lead {
  grid-column: 1 / -1;
  background:
    radial-gradient(420px 200px at 100% 0%, rgba(245,145,64,0.10), transparent 60%),
    linear-gradient(180deg, var(--surface), var(--surface-2));
  border-color: var(--border-2);
}
.card-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent-3);
  background: var(--accent-dim);
  border: 1px solid var(--border-2);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
}
.card h3 { margin: 0 0 0.55rem; font-size: 1.18rem; color: var(--text); }
.card p { color: var(--muted); margin: 0; font-size: 0.97rem; }
.card-sub { margin-top: 0.9rem !important; color: var(--faint) !important; font-size: 0.92rem !important; }

/* ---------- how it works / steps ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
  counter-reset: step;
}
.step {
  display: flex;
  gap: 1.1rem;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.step-n {
  flex: 0 0 auto;
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.1rem;
  color: #1a1207;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
}
.step-body h3 { margin: 0.15rem 0 0.45rem; font-size: 1.12rem; }
.step-body p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* ---------- comparison table ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  /* right-edge fade affordance: a local-attachment shadow that recedes once scrolled to the end */
  background:
    linear-gradient(to right, transparent, transparent),
    radial-gradient(farthest-side at 100% 50%, rgba(0,0,0,0.5), rgba(0,0,0,0)) 100% 50% / 22px 100% no-repeat;
  background-attachment: local, scroll;
}
/* a small "scroll" hint that only shows where the tables overflow on narrow screens */
.scroll-hint {
  display: none;
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--faint);
}
.cmp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 640px;
}
.cmp-table th, .cmp-table td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.cmp-table thead th {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--surface-2);
  position: sticky;
  top: 0;
}
.cmp-table thead th.cmp-own { color: var(--accent-3); }
.cmp-table tbody th {
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
}
.cmp-table td { color: var(--muted); }
.cmp-table .cmp-own {
  color: var(--text);
  font-weight: 600;
  background: rgba(245,145,64,0.07);
  box-shadow: inset 2px 0 0 var(--accent), inset -2px 0 0 var(--accent);
}
.cmp-table thead th.cmp-own { box-shadow: inset 2px 0 0 var(--accent), inset -2px 0 0 var(--accent); }
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td { border-bottom: 0; }

/* ---------- allocation visual ---------- */
.alloc { margin-bottom: 2.4rem; }
.alloc-bar {
  display: flex;
  width: 100%;
  height: 64px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-2);
  background: var(--surface);
  box-shadow: 0 10px 30px -18px rgba(0,0,0,0.8);
}
.seg {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 0 0.3rem;
  border-right: 1px solid rgba(11,9,7,0.55);
}
.seg:last-child { border-right: 0; }
.seg-label {
  font-size: 0.76rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* community family (amber) */
.seg-mine  { background: linear-gradient(180deg, var(--accent-2), var(--accent)); }
.seg-stake { background: linear-gradient(180deg, #f4b06a, #e89a4a); }
.seg-mine .seg-label, .seg-stake .seg-label { color: #1a1207; }
/* insider family (muted, deliberately subordinate to the amber community segments,
   but kept distinct from one another and from the bar background so the 10/5/10
   split reads as three separate slices, not one dark blob) */
.seg-founder { background: #9b7b4c; }
.seg-seed    { background: #7a6440; }
.seg-stream  { background: #5d4d36; }

.alloc-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.legend-group { display: inline-flex; align-items: center; gap: 0.5rem; }
.legend-swatch {
  width: 0.95rem; height: 0.95rem;
  border-radius: 4px;
  flex: 0 0 auto;
  border: 1px solid rgba(0,0,0,0.3);
}
.sw-mine    { background: linear-gradient(180deg, var(--accent-2), var(--accent)); }
.sw-stake   { background: linear-gradient(180deg, #f4b06a, #e89a4a); }
.sw-founder { background: #9b7b4c; }
.sw-seed    { background: #7a6440; }
.sw-stream  { background: #5d4d36; }

/* ---------- tables (allocation) ---------- */
.alloc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
  min-width: 560px;
}
.alloc-table caption {
  text-align: left;
  color: var(--faint);
  font-size: 0.84rem;
  padding: 0.85rem 1rem;
  background: var(--surface-2);
}
.alloc-table th, .alloc-table td {
  text-align: left;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.alloc-table thead th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--surface);
}
.alloc-table tbody th { font-weight: 600; color: var(--text); background: var(--surface); }
.alloc-table td:nth-child(2) {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--accent-3);
  white-space: nowrap;
}
.alloc-table td:last-child { color: var(--muted); }
.alloc-table tbody tr:last-child th,
.alloc-table tbody tr:last-child td { border-bottom: 0; }

.footnote {
  color: var(--faint);
  font-size: 0.9rem;
  max-width: 72ch;
  margin-top: 1.4rem;
}

/* ---------- run / code ---------- */
.cards-run { margin-bottom: 1.8rem; }
.codeblock {
  background: #080603;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  padding: 1.05rem 1.3rem;
  overflow-x: auto;
}
.codeblock code {
  font-family: var(--mono);
  color: var(--accent-3);
  font-size: 0.95rem;
}
.codeblock code::before { content: "$ "; color: var(--faint); }

/* ---------- resources / links ---------- */
.resources { margin-top: 2.6rem; }
.resources-h { font-size: 1.15rem; margin: 0 0 1rem; }
.links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.8rem;
}
.links a,
.links .link-soon {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.95rem 1.15rem;
  color: var(--text);
  font-weight: 600;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.links a:hover {
  border-color: var(--accent);
  color: var(--accent-3);
  text-decoration: none;
  transform: translateY(-2px);
}
/* resource URLs not published yet: shown as inert placeholders, no jump */
.links .link-soon { cursor: default; color: var(--muted); }
.todo { font-weight: 400; font-size: 0.74rem; color: var(--faint); }

/* ---------- status timeline ---------- */
.section-status { background:
  radial-gradient(900px 400px at 50% 0%, rgba(245,145,64,0.06), transparent 60%);
}
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.tl-item {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  border-top: 3px solid var(--border-2);
}
.tl-done { border-top-color: var(--ok); }
.tl-next { border-top-color: var(--accent); }
.tl-state {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.85rem;
}
.tl-done .tl-state { color: var(--ok); background: rgba(111,206,159,0.12); border: 1px solid rgba(111,206,159,0.3); }
.tl-next .tl-state { color: var(--accent-3); background: var(--accent-dim); border: 1px solid var(--border-2); }
.tl-item h3 { margin: 0 0 0.45rem; font-size: 1.08rem; }
.tl-item p { margin: 0; color: var(--muted); font-size: 0.93rem; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: clamp(2.5rem, 5vw, 3.5rem) var(--gutter) 3rem;
  background: var(--bg-alt);
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  padding-bottom: 1.6rem;
  margin-bottom: 1.6rem;
  border-bottom: 1px solid var(--border);
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 0.25rem;
}
.footer-brand .brand-mark { color: var(--accent); }
.footer-tag { color: var(--muted); margin: 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-nav a { color: var(--muted); font-size: 0.94rem; font-weight: 500; }
.footer-nav a:hover { color: var(--text); text-decoration: none; }
.footer-fine { color: var(--faint); font-size: 0.85rem; max-width: 74ch; margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .nav-links { gap: 1.1rem; font-size: 0.9rem; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-panel { max-width: 460px; margin-top: 0.5rem; }
  .cards-feature { grid-template-columns: repeat(2, 1fr); }
  .card-lead { grid-column: 1 / -1; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  /* collapse the primary nav before the links would wrap to a second row */
  .nav-links { display: none; }
  .nav { flex-wrap: nowrap; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .cards-feature { grid-template-columns: 1fr; }
  .card-lead { grid-column: auto; }
  .steps { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .alloc-bar { height: 56px; }
  .seg-label { font-size: 0.66rem; }
  .scroll-hint { display: block; }
}

@media (max-width: 420px) {
  .stat-band { grid-template-columns: 1fr; }
}