/*
  Froggers ($FROG) — stylesheet
  Palette matched to the official banner (art/branding/banniere-twitter.png):
  deep green-black field, acid-green pixel wordmark, colorful frog accents.
  Pixel-art degen aesthetic. Chunky borders, subtle CRT scanlines.
  No external fonts, no CDN. System font stack only — fully self-hosted.
*/

:root {
  /* Base field, matched to the banner background */
  --bg: #060d06;
  --bg-tile-a: #0d1a0c;
  --bg-tile-b: #122609;
  --bg-alt: #0d1a0c;
  --bg-card: #0b160e;

  /* Acid green — wordmark gradient + general accent */
  --acid-top: #c8f04a;
  --acid-mid: #a8e62e;
  --acid-bottom: #7acc29;
  --acid: #a8e62e;
  --acid-outline: #1c330d;
  --acid-dim: rgba(168, 230, 46, 0.16);
  --acid-soft: rgba(168, 230, 46, 0.55);

  /* Robinhood Chain green, used only for chain mentions */
  --robinhood: #00c805;

  /* Frog accent colors, used sparingly on cards/hover/tags */
  --gold: #eec12f;
  --purple: #9955e8;
  --cyan: #3ec9d6;
  --orange: #f09a26;
  --pink: #e85ba0;
  --cream: #e9e1c9;
  --navy: #141420;

  --fg: #f2f2e9;
  --muted: #8fa88a;
  --border: #1c2e14;
  --danger: #ff4d5e;
  --radius: 2px;
  --mono: ui-monospace, "SFMono-Regular", "Courier New", Courier, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  /* Subtle checkerboard, matched to the banner's tile pattern */
  background-image: conic-gradient(
    var(--bg-tile-a) 90deg,
    var(--bg-tile-b) 90deg 180deg,
    var(--bg-tile-a) 180deg 270deg,
    var(--bg-tile-b) 270deg
  );
  background-size: 32px 32px;
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  position: relative;
  min-height: 100vh;
}

/* CRT scanline overlay — purely decorative, non-interactive */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(168, 230, 46, 0.035) 0px,
    rgba(168, 230, 46, 0.035) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

/* Scattered pixel sparkles, acid green, slow shimmer */
.sparkle {
  position: absolute;
  color: var(--acid-mid);
  font-family: var(--mono);
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
  animation: sparkle-shimmer 3.6s ease-in-out infinite;
  text-shadow: 0 0 6px var(--acid-soft);
}

.sparkle:nth-child(2n) { animation-delay: 0.6s; }
.sparkle:nth-child(3n) { animation-delay: 1.3s; }
.sparkle:nth-child(4n) { animation-delay: 2s; }
.sparkle:nth-child(5n) { animation-delay: 0.9s; }

@keyframes sparkle-shimmer {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .sparkle { animation: none; opacity: 0.7; }
}

/* Vignette to keep edges dark and focus center */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 998;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
}

img {
  max-width: 100%;
  display: block;
}

.pixel {
  image-rendering: pixelated;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

a {
  color: var(--acid);
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header / Nav ---------- */

.site-header {
  background: rgba(5, 8, 6, 0.92);
  border-bottom: 2px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 20px;
  max-width: 1180px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  color: var(--acid);
  text-decoration: none;
  text-shadow: 0 0 8px var(--acid-soft);
}

.brand .dot {
  width: 10px;
  height: 10px;
  background: var(--acid);
  box-shadow: 0 0 6px var(--acid);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.nav-links a {
  display: inline-block;
  padding: 6px 10px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links a:hover {
  color: var(--acid);
  border-color: var(--border);
  background: var(--acid-dim);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  padding: 12px 20px;
  text-decoration: none;
  border: 3px solid var(--acid);
  color: var(--acid);
  background: transparent;
  box-shadow: 5px 5px 0 var(--acid-dim);
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--acid-dim);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--acid-dim);
}

.btn-solid {
  background: var(--acid);
  color: #04140a;
  box-shadow: 5px 5px 0 rgba(238, 193, 47, 0.35);
}

.btn-solid:hover {
  box-shadow: 7px 7px 0 rgba(238, 193, 47, 0.35);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* ---------- Hero ---------- */

.hero {
  padding: 64px 0 40px;
  text-align: center;
  border-bottom: 2px solid var(--border);
  background:
    radial-gradient(circle at 50% 0%, rgba(57, 255, 20, 0.08), transparent 60%),
    var(--bg);
}

.hero .eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
  border: 2px solid var(--acid-mid);
  border-radius: 999px;
  background: rgba(6, 13, 6, 0.55);
  padding: 6px 16px;
}

/* Reusable pill motif — pulled from the banner's tagline tag */
.pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
  border: 2px solid var(--acid-mid);
  border-radius: 999px;
  background: rgba(6, 13, 6, 0.55);
  padding: 6px 16px;
}

/*
  Hero wordmark: a rasterized pixel-art PNG (site/assets/branding/wordmark.png),
  built from the exact same 47x7 letterform grid as the official banner's
  wordmark, with the acid-green gradient + thick outline baked in as real
  pixels. Replaces an earlier CSS gradient-text-clip + text-stroke attempt
  that rendered dark/muddy against the dark background at large sizes —
  a raster asset guarantees the "pops like the banner" pixel-block look
  regardless of browser font rendering.
*/
.wordmark {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 14px 0 6px;
  line-height: 1;
}

.wordmark-img {
  width: min(94vw, 820px);
  height: auto;
  filter: drop-shadow(0 0 34px var(--acid-dim));
}

.wordmark .ticker {
  font-family: var(--mono);
  font-weight: 800;
  font-size: clamp(1.1rem, 3.4vw, 1.9rem);
  color: var(--gold);
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.6);
}

.tagline {
  font-family: var(--mono);
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  color: var(--fg);
  max-width: 640px;
  margin: 0 auto;
}

.subtagline {
  max-width: 620px;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero .btn-row {
  justify-content: center;
}

/* Marquee of sample frogs */
.marquee-wrap {
  margin-top: 48px;
  border-top: 2px solid var(--border);
  border-bottom: 2px solid var(--border);
  background: var(--bg-alt);
  overflow: hidden;
  padding: 18px 0;
}

.marquee-track {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: marquee 26s linear infinite;
}

.marquee-track img {
  width: 84px;
  height: 84px;
  border: 2px solid var(--border);
  background: #000;
  flex: 0 0 auto;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* ---------- Sections ---------- */

section {
  padding: 64px 0;
  border-bottom: 2px solid var(--border);
}

section:last-of-type {
  border-bottom: none;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}

.section-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.section-title {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  margin: 8px 0 10px;
  line-height: 1.15;
  background: linear-gradient(180deg, var(--acid-top) 0%, var(--acid-mid) 60%, var(--acid-bottom) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  color: var(--acid-mid);
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 1.5px var(--acid-outline);
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}

.section-desc {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- How it works ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}

.step-card {
  border: 2px solid var(--border);
  background: var(--bg-card);
  padding: 22px;
  position: relative;
}

.step-card .step-num {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--acid);
  border: 1px solid var(--border);
  display: inline-block;
  padding: 2px 8px;
  margin-bottom: 12px;
}

.step-card h3 {
  font-family: var(--mono);
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--fg);
}

.step-card p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.tech-note {
  margin-top: 30px;
  border: 2px dashed var(--border);
  padding: 18px 20px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.tech-note strong {
  color: var(--acid);
}

/* ---------- Roll demo ---------- */

.roll-demo {
  border: 2px solid var(--border);
  background: var(--bg-card);
  padding: 28px;
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}

@media (min-width: 720px) {
  .roll-demo {
    /* Fixed track (not "auto") so the tile's percentage width below
       resolves against a definite size instead of collapsing. */
    grid-template-columns: 300px 1fr;
  }
}

/*
  Single composited preview tile: 6 trait layers stacked with
  position:absolute in on-chain paint order (background at the bottom,
  headwear on top). Each layer is stretched to 100% of the tile, matching
  how the contracts composite 32x32 layers onto one canvas. Requires the
  non-background layers to carry real alpha (see strip_checker_alpha.py) —
  the background layer alone stays fully opaque, as the bottom-most layer.
*/
.roll-tile {
  position: relative;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border: 2px solid var(--border);
  background: var(--bg-tile-a);
  overflow: hidden;
}

.roll-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.roll-copy h3 {
  font-family: var(--mono);
  margin-top: 0;
  color: var(--fg);
}

.roll-copy p {
  color: var(--muted);
  font-size: 0.9rem;
}

.roll-copy .fine-print {
  font-size: 0.72rem;
  color: var(--muted);
  opacity: 0.8;
  font-family: var(--mono);
}

/* ---------- Legendary grid ---------- */

.legendary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 14px;
}

.legendary-card {
  margin: 0;
  border: 2px solid var(--border);
  background: var(--bg-card);
  padding: 8px;
  text-align: center;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.legendary-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
}

.legendary-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #000;
  border: 1px solid var(--border);
  margin-bottom: 8px;
}

.legendary-card figcaption {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.legendary-card .ledger-id {
  display: block;
  color: var(--muted);
  font-size: 0.6rem;
  margin-top: 2px;
}

.odds-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin: 0 0 36px;
  font-family: var(--mono);
}

.odds-item {
  text-align: center;
}

.odds-item .num {
  font-size: 1.7rem;
  color: var(--acid);
  display: block;
  text-shadow: 0 0 12px var(--acid-dim);
}

.odds-item .label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.traits-summary {
  text-align: center;
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 28px;
}

/* ---------- Fair launch ---------- */

.launch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.launch-card {
  border: 2px solid var(--border);
  background: var(--bg-card);
  padding: 20px;
}

.launch-card .icon {
  font-family: var(--mono);
  color: var(--acid);
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.launch-card h3 {
  font-family: var(--mono);
  font-size: 0.95rem;
  margin: 0 0 8px;
  color: var(--fg);
}

.launch-card p {
  color: var(--muted);
  font-size: 0.87rem;
  margin: 0;
}

/* ---------- FAQ ---------- */

.faq {
  max-width: 780px;
  margin: 0 auto;
}

.faq details {
  border: 2px solid var(--border);
  background: var(--bg-card);
  margin-bottom: 10px;
  padding: 4px 18px;
}

.faq summary {
  cursor: pointer;
  font-family: var(--mono);
  font-weight: 700;
  padding: 14px 0;
  color: var(--fg);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  color: var(--acid);
  font-size: 1.2rem;
  flex: 0 0 auto;
}

.faq details[open] summary::after {
  content: "\2212";
}

.faq p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0 60px;
  text-align: center;
}

.footer-banner {
  width: 100%;
  height: auto;
  max-width: 900px;
  margin: 0 auto 30px;
  border: 2px solid var(--border);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.8rem;
  margin-bottom: 20px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 8px 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links a:hover {
  color: var(--acid);
  border-color: var(--acid);
}

.contract-line {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 18px;
}

.contract-line code {
  color: var(--gold);
  background: rgba(238, 193, 47, 0.08);
  padding: 2px 8px;
  border: 1px solid var(--border);
}

.copyright {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  opacity: 0.8;
}

.copyright .heart {
  color: var(--acid);
}

/* ---------- Misc ---------- */

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg);
  background: rgba(6, 13, 6, 0.55);
  border: 1.5px solid var(--acid-mid);
  border-radius: 999px;
  padding: 2px 10px;
  margin-left: 8px;
  vertical-align: middle;
}

/* Robinhood Chain green, used only for chain-name mentions */
.chain-name {
  color: var(--robinhood);
  font-weight: 700;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--acid);
  color: #04140a;
  padding: 10px 16px;
  z-index: 1000;
  font-family: var(--mono);
}

.skip-link:focus {
  left: 10px;
  top: 10px;
}

@media (max-width: 640px) {
  section {
    padding: 46px 0;
  }
  .nav-links {
    justify-content: center;
    width: 100%;
  }
}