/* site.css : layout, motion. No colour literals here; every colour is a token (or a mix of tokens) from tokens.css.
   Numbers below are measured off the reference (hero 3rem/4.5rem light, 5rem/6rem paddings, pill r=999, blur 12px,
   panel r=1.5rem blur 14px, btn .8rem 1.8rem, easing cubic-bezier(.4,0,.2,1), 150/300/500ms, star fall 9-23s linear). */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  min-height: 100svh;
  background: var(--c-void);
  color: var(--c-ink);
  font: 400 1rem/1.5 'Outfit', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
img { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
:focus-visible { outline: 2px solid var(--c-lime); outline-offset: 3px; }

/* ---------- top bar: chain chip, X icon, contract slot ---------- */
.top {
  position: sticky; top: 0; z-index: 20;
  padding: 0.5rem 1rem 0.75rem;
  background: color-mix(in srgb, var(--c-void) 82%, transparent);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--c-ink) 12%, transparent);
}
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; min-height: var(--tap-min); }
.chain-chip {
  font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
  color: color-mix(in srgb, var(--c-ink) 70%, transparent);
}
.social { display: flex; align-items: center; gap: 0.25rem; }
.icon-btn {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: var(--tap-min); height: var(--tap-min); border-radius: 999px;
  color: var(--c-ink); text-decoration: none;
}
.icon-btn .icon { position: relative; width: 1.375rem; height: 1.375rem; fill: currentColor; transition: transform var(--t-mid) var(--ease); }
.icon-btn .glow {
  position: absolute; width: 6rem; height: 6rem; border-radius: 999px; pointer-events: none;
  background: radial-gradient(circle, color-mix(in srgb, var(--c-lime) 55%, transparent) 0%, color-mix(in srgb, var(--c-lime) 25%, transparent) 45%, transparent 70%);
  filter: blur(24px); opacity: 0.45; transition: opacity var(--t-slow) var(--ease);
}
.icon-btn:hover .icon { transform: scale(1.1); }
.icon-btn:hover .glow { opacity: 0.85; }
.icon-btn[data-inert="true"] { color: color-mix(in srgb, var(--c-ink) 55%, transparent); cursor: default; }
.icon-btn[data-inert="true"] .glow { opacity: 0; }
.icon-btn[data-inert="true"]:hover .icon { transform: none; }

.ca { display: flex; flex-direction: column; gap: 0.25rem; margin-top: 0.125rem; }
.ca-label { font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; color: color-mix(in srgb, var(--c-ink) 70%, transparent); }
.ca-btn {
  display: flex; flex-direction: column; align-items: flex-start; gap: 0.125rem; width: 100%;
  min-height: var(--tap-min); padding: 0.625rem 1rem; text-align: left;
  border-radius: 1rem;
  background: color-mix(in srgb, var(--c-slate) 45%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-lime) 55%, transparent);
  box-shadow: 0 20px 60px -30px color-mix(in srgb, var(--c-void) 90%, transparent);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.ca-value {
  font-family: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-weight: 500; font-size: 1.0625rem; line-height: 1.35; letter-spacing: -0.02em;
  overflow-wrap: anywhere; word-break: break-all; color: var(--c-lime);
}
.ca-hint { font-size: 0.75rem; color: color-mix(in srgb, var(--c-ink) 65%, transparent); }
.ca-btn:not(:disabled):hover { transform: translateY(-1px); background: color-mix(in srgb, var(--c-slate) 70%, transparent); }
.ca[data-feedback="done"] .ca-btn { border-color: var(--c-lime); }
.ca[data-feedback="done"] .ca-hint { color: var(--c-lime); }
.ca-btn:disabled { cursor: not-allowed; border-style: dashed; border-color: color-mix(in srgb, var(--c-ink) 28%, transparent); }
.ca-btn:disabled .ca-value { font-family: 'Outfit', ui-sans-serif, system-ui, sans-serif; font-weight: 300; letter-spacing: 0; color: color-mix(in srgb, var(--c-ink) 78%, transparent); }

/* ---------- scene / hero ---------- */
.scene {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: calc(100svh - 8.5rem);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 3rem 1.5rem 2.5rem;
  background: linear-gradient(to bottom,
    color-mix(in srgb, var(--c-sky-deep) 55%, var(--c-void)) 0%,
    color-mix(in srgb, var(--c-slate) 75%, var(--c-void)) 58%,
    var(--c-void) 100%);
}
.scene::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; z-index: -2; pointer-events: none;
  height: clamp(9rem, 32vw, 20rem);
  background: url('../assets/mountains.jpg') center bottom / cover no-repeat;
  opacity: 0.55;
  -webkit-mask-image: linear-gradient(transparent 0%, var(--c-ink) 55%);
  mask-image: linear-gradient(transparent 0%, var(--c-ink) 55%);
}
.star-field {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  -webkit-mask-image: linear-gradient(var(--c-ink) 42%, var(--c-ink) 55%, transparent 74%);
  mask-image: linear-gradient(var(--c-ink) 42%, var(--c-ink) 55%, transparent 74%);
}
.falling-star {
  position: absolute; border-radius: 999px; will-change: transform, opacity;
  animation: star-fall linear infinite;
  box-shadow: 0 0 6px 1px color-mix(in srgb, var(--c-ink) 25%, transparent);
  --star: var(--c-snow);
  background: linear-gradient(to bottom, transparent, var(--star));
}
.falling-star[data-tone="0"] { --star: var(--c-snow); }
.falling-star[data-tone="1"] { --star: var(--c-ink); }
.falling-star[data-tone="2"] { --star: color-mix(in srgb, var(--c-lime) 55%, var(--c-ink)); }
@keyframes star-fall {
  0% { opacity: 0; transform: translateY(0); }
  6% { opacity: 1; }
  90% { opacity: 1; }
  100% { opacity: 0; transform: translateY(var(--fall-dist, 85vh)); }
}

.hero { position: relative; width: 100%; max-width: 48rem; display: flex; flex-direction: column; align-items: center; }
.mark { display: flex; align-items: center; gap: 1rem; }
.mark-img { width: 4rem; height: 4rem; object-fit: contain; }
.mark-title { font-weight: 300; font-size: 3rem; line-height: 1; letter-spacing: -0.02em; }
.checker { width: 100%; margin-top: 2.5rem; }
.pill {
  display: flex; align-items: center; gap: 0.75rem; width: 100%;
  min-height: 3.875rem; padding: 0.5rem 1.5rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c-slate) 45%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-ink) 22%, transparent);
  box-shadow: 0 20px 60px -30px color-mix(in srgb, var(--c-void) 90%, transparent);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  transition: border-color var(--t-fast) var(--ease);
}
.pill:focus-within { border-color: var(--c-lime); }
.pill-input {
  width: 100%; min-width: 0; background: transparent; border: 0; outline: 0;
  min-height: var(--tap-min);
  font-weight: 300; font-size: 1.25rem; letter-spacing: -0.02em; color: var(--c-ink);
}
.pill-input::placeholder { color: color-mix(in srgb, var(--c-ink) 45%, transparent); }
.btn-row { display: flex; justify-content: center; margin-top: 1.5rem; }
.btn-hero {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  min-width: var(--tap-min); min-height: var(--tap-min); padding: 0.8rem 1.8rem;
  border-radius: 999px; font-weight: 600; font-size: 1rem;
  color: var(--c-void); background: var(--c-lime);
  box-shadow: 0 18px 50px -18px color-mix(in srgb, var(--c-lime) 45%, transparent);
  transition: filter var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.btn-hero:hover { filter: brightness(1.08); transform: translateY(-1px); }
.note { margin-top: 1rem; text-align: center; font-size: 0.75rem; color: color-mix(in srgb, var(--c-ink) 60%, transparent); }
.verdict {
  margin-top: 1.25rem; padding: 0.875rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; line-height: 1.5;
  background: color-mix(in srgb, var(--c-slate) 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-ink) 25%, transparent);
}
.verdict[hidden] { display: none; }
.verdict[data-verdict="match"] { border-color: var(--c-lime); }
.verdict[data-verdict="match"]::before { content: '\2713\00a0'; color: var(--c-lime); font-weight: 700; }
.verdict[data-verdict="mismatch"]::before, .verdict[data-verdict="malformed"]::before, .verdict[data-verdict="unverifiable"]::before { content: '\2715\00a0'; font-weight: 700; }
.verdict[data-verdict="unverifiable"] { border-style: dashed; }

/* ---------- register (panel language of the reference's list page) ---------- */
.register { padding: 2.5rem 1.25rem 1rem; background: var(--c-void); }
.register-in { max-width: 56rem; margin: 0 auto; }
.register-head { margin-bottom: 1.5rem; }
.register-title { font-weight: 700; font-size: 2.25rem; line-height: 1.1; letter-spacing: -0.02em; }
.accent { color: var(--c-lime); }
.register-sub { margin-top: 0.5rem; font-size: 0.875rem; color: color-mix(in srgb, var(--c-ink) 65%, transparent); }
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-bottom: 1rem; }
.tile, .row {
  border-radius: 1.5rem;
  background: linear-gradient(170deg, color-mix(in srgb, var(--c-slate) 75%, transparent), color-mix(in srgb, var(--c-slate) 45%, var(--c-void)));
  border: 1px solid color-mix(in srgb, var(--c-sky-deep) 22%, transparent);
  box-shadow: 0 24px 60px -30px color-mix(in srgb, var(--c-void) 90%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.tile { display: flex; flex-direction: column; gap: 0.125rem; padding: 0.875rem 1rem; }
.tile-n { font-weight: 700; font-size: 1.75rem; line-height: 1.1; }
.tile[data-tile="stated"] .tile-n { color: var(--c-lime); }
.tile-l { font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; color: color-mix(in srgb, var(--c-ink) 70%, transparent); }
.rows { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; padding: 1rem;
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.row:hover { border-color: var(--c-lime); transform: translateY(-2px); }
.row-main { flex: 1 1 14rem; min-width: 0; }
.row-label { font-weight: 600; }
.row-detail { margin-top: 0.125rem; display: flex; flex-direction: column; gap: 0.125rem; }
.row-value { font-size: 0.875rem; }
.row-value.muted { color: color-mix(in srgb, var(--c-ink) 60%, transparent); }
.row-mono { font-family: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace; font-size: 0.6875rem; line-height: 1.5; color: color-mix(in srgb, var(--c-ink) 65%, transparent); overflow-wrap: anywhere; }
.row-side { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.chip {
  padding: 0.25rem 0.75rem; border-radius: 999px; font-size: 0.75rem; font-weight: 500;
  border: 1px solid color-mix(in srgb, var(--c-ink) 28%, transparent);
  color: color-mix(in srgb, var(--c-ink) 80%, transparent);
}
.chip[data-chip="stated"] { color: var(--c-void); background: var(--c-lime); border-color: var(--c-lime); }
.chip[data-chip="absent"] { border-style: dashed; }
.row-date { font-family: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace; font-size: 0.6875rem; color: color-mix(in srgb, var(--c-ink) 60%, transparent); }

.foot { padding: 2rem 1.25rem 2.5rem; text-align: center; font-size: 0.75rem; color: color-mix(in srgb, var(--c-ink) 60%, transparent); background: var(--c-void); }

/* ---------- breakpoints (reference switches at 640px) ---------- */
@media (min-width: 640px) {
  .top { padding: 0.5rem 1.5rem 0.875rem; }
  .ca { flex-direction: row; align-items: center; gap: 1rem; }
  .ca-btn { flex-direction: row; align-items: center; justify-content: space-between; gap: 1rem; }
  .ca-value { font-size: 1.5rem; }
  .mark-img { width: 5rem; height: 5rem; }
  .mark-title { font-size: 4.5rem; }
  .pill-input { font-size: 1.5rem; }
  .scene { padding: 3rem 1.5rem 2.5rem; }
  .register { padding-left: 1.25rem; padding-right: 1.25rem; }
}
@media (min-width: 1024px) {
  .top { padding-left: 2rem; padding-right: 2rem; }
}
@media (max-width: 639.98px) {
  .scene { min-height: calc(100svh - 10.5rem); }
  .register-title { font-size: 1.875rem; }
  .tile { padding: 0.75rem; }
  .tile-n { font-size: 1.5rem; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .star-field { display: none; }
  .falling-star { animation: none; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  .btn-hero:hover, .row:hover, .ca-btn:not(:disabled):hover, .icon-btn:hover .icon { transform: none; }
}