/* ==========================================================================
   RINA COIN — Global styles
   Brand thesis (spec §1): soft, literary webtoon — NOT a memecoin site.
   No countdowns, no urgency, no neon pump colors, no meme typography.
   ========================================================================== */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--rina-ink);
  color: var(--rina-cream);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: var(--rina-lavender); text-decoration: none; transition: color .25s var(--ease-soft), opacity .25s var(--ease-soft); }
a:hover { color: var(--rina-blossom); }

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; margin: 0 0 .6em; }
h1 { font-size: var(--fs-display-l); }
h2 { font-size: var(--fs-display-m); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

::selection { background: var(--rina-lavender-30); color: var(--rina-cream); }

:focus-visible { outline: 2px solid var(--rina-lavender); outline-offset: 3px; border-radius: 4px; }

/* --- Layout helpers ------------------------------------------------------- */
.container { width: 100%; max-width: var(--content-max); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-gap); }
.section--tight { padding-block: calc(var(--section-gap) * .6); }

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--rina-mist);
  margin: 0 0 1rem;
}

.lede { color: var(--rina-cream-70); max-width: 60ch; }
.muted { color: var(--rina-mist); }
.center { text-align: center; }
.measure { max-width: 64ch; margin-inline: auto; }

.glow { color: var(--rina-lavender); text-shadow: 0 0 28px rgba(182,164,224,.25); }

/* Handwritten pull-quote — spec §2.2: scarce by design, pull-quotes only */
.hand {
  font-family: var(--font-hand);
  color: var(--rina-blossom);
  line-height: 1.3;
  font-weight: 400;
}
.pull-quote {
  font-family: var(--font-hand);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--rina-blossom);
  line-height: 1.25;
  max-width: 22ch;
}

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --_bg: transparent;
  --_fg: var(--rina-cream);
  --_bd: var(--rina-lavender);
  display: inline-flex; align-items: center; gap: .55em;
  font-family: var(--font-body); font-weight: 500; font-size: 1rem;
  letter-spacing: .01em;
  padding: .8em 1.6em;
  border: 1px solid var(--_bd);
  border-radius: 999px;
  background: var(--_bg);
  color: var(--_fg);
  cursor: pointer;
  transition: background .3s var(--ease-soft), color .3s var(--ease-soft),
              border-color .3s var(--ease-soft), transform .2s var(--ease-soft);
}
.btn:hover { transform: translateY(-2px); color: var(--rina-cream); }
/* Primary = filled lavender (used sparingly, story-leading CTAs) */
.btn--primary { --_bg: var(--rina-lavender); --_fg: var(--rina-ink); --_bd: var(--rina-lavender); }
.btn--primary:hover { --_bg: var(--rina-blossom); --_bd: var(--rina-blossom); color: var(--rina-ink); }
/* Outline = quiet, default conversion path style */
.btn--outline:hover { background: var(--rina-lavender-15); border-color: var(--rina-blossom); }
.btn--ghost { --_bd: var(--rina-twilight); color: var(--rina-mist); }
.btn--ghost:hover { color: var(--rina-cream); border-color: var(--rina-lavender); background: transparent; }

/* --- Header / nav (spec §3.1) -------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--gutter);
  background: transparent;
  transition: background .35s var(--ease-soft), backdrop-filter .35s var(--ease-soft),
              border-color .35s var(--ease-soft), padding .35s var(--ease-soft);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: var(--rina-midnight-70);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--rina-lavender-15);
  padding-block: .7rem;
}
.brand { display: inline-flex; align-items: center; gap: .55rem; color: var(--rina-cream); }
.brand:hover { color: var(--rina-cream); }
.brand__cat { width: 26px; height: 26px; flex: none; color: var(--rina-lavender); }
.brand__word {
  font-family: var(--font-display); font-size: 1.5rem; letter-spacing: var(--ls-wordmark);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav__links { display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.nav__links a {
  color: var(--rina-cream-70); font-size: .95rem; position: relative; padding-block: .2rem;
}
.nav__links a:hover { color: var(--rina-lavender); }
.nav__links a[aria-current="page"] { color: var(--rina-lavender); }
.nav__links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: var(--rina-lavender);
}

.nav__toggle {
  display: none; background: none; border: 0; cursor: pointer; padding: .4rem;
  color: var(--rina-cream);
}
.nav__toggle svg { width: 26px; height: 26px; }

@media (max-width: 880px) {
  .nav__toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(320px, 84vw);
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    gap: 1.5rem; padding: 5rem 2rem 2rem;
    background: var(--rina-midnight);
    border-left: 1px solid var(--rina-lavender-15);
    transform: translateX(100%); transition: transform .4s var(--ease-soft);
  }
  .nav.is-open { transform: translateX(0); }
  .nav__links { flex-direction: column; gap: 1.1rem; }
  .nav__links a { font-size: 1.1rem; }
}

/* --- Cherry-blossom section divider (spec §3.3) -------------------------- */
.divider {
  display: flex; align-items: center; gap: 1rem;
  max-width: var(--content-max); margin: 0 auto; padding-inline: var(--gutter);
  color: var(--rina-twilight);
}
.divider::before, .divider::after {
  content: ""; height: 1px; flex: 1;
  background: linear-gradient(to var(--_dir, right), transparent, var(--rina-twilight));
}
.divider::before { --_dir: left; }
.divider__petal { width: 22px; height: 22px; color: var(--rina-blossom); flex: none; opacity: .8; }

/* --- Footer token bar (spec §3.2) ---------------------------------------- */
.site-footer {
  border-top: 1px solid var(--rina-lavender-15);
  background: var(--rina-midnight);
  padding-block: 3rem;
}
.footer__grid {
  display: grid; gap: 2rem;
  grid-template-columns: 1.2fr 1fr 1fr;
  align-items: start;
}
@media (max-width: 820px) { .footer__grid { grid-template-columns: 1fr; } }

.network-badge {
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .95rem; color: var(--rina-cream);
}
/* The ONE cyan accent allowed in the footer viewport (spec §2.1) */
.network-badge__mark { width: 22px; height: 22px; color: var(--rina-solana-cyan); flex: none; }
.network-badge__mark.is-solana { filter: drop-shadow(0 0 8px rgba(20,241,198,.35)); }

.footer__title { font-family: var(--font-display); font-size: 1.25rem; margin-bottom: .9rem; color: var(--rina-cream); }

/* Contract address chip (CA populated from one JS constant — spec §3.2 / SKILL) */
.ca-chip {
  display: inline-flex; align-items: center; gap: .6rem;
  background: var(--rina-ink); border: 1px solid var(--rina-twilight);
  border-radius: 999px; padding: .5rem .9rem; max-width: 100%;
}
.ca-chip__addr { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .85rem; color: var(--rina-mist); }
.ca-chip__copy {
  background: none; border: 0; cursor: pointer; color: var(--rina-lavender);
  display: inline-flex; padding: .15rem; border-radius: 6px;
}
.ca-chip__copy:hover { color: var(--rina-blossom); }
.ca-chip__copy svg { width: 18px; height: 18px; }
.ca-chip__copy.is-copied { color: var(--rina-blossom); }

.social-row { display: flex; gap: .75rem; flex-wrap: wrap; }
.social-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--rina-twilight); color: var(--rina-cream-70);
  transition: border-color .25s var(--ease-soft), color .25s var(--ease-soft), transform .2s var(--ease-soft);
}
.social-link:hover { color: var(--rina-lavender); border-color: var(--rina-lavender); transform: translateY(-2px); }
.social-link svg { width: 20px; height: 20px; }

.footer__tagline { font-family: var(--font-hand); color: var(--rina-blossom); font-size: 1.5rem; margin-top: 1.4rem; }
.footer__copy { color: var(--rina-mist); font-size: var(--fs-caption); margin-top: .6rem; }

/* --- Cards / grids -------------------------------------------------------- */
.card {
  background: var(--rina-midnight);
  border: 1px solid var(--rina-lavender-15);
  border-radius: var(--radius-card);
  padding: 1.6rem;
  transition: border-color .3s var(--ease-soft), transform .3s var(--ease-soft);
}
.card:hover { border-color: var(--rina-lavender-30); transform: translateY(-2px); }
.card h3 { color: var(--rina-lavender); }

.grid { display: grid; gap: 1.4rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 980px) { .grid--4, .grid--5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) { .grid--3 { grid-template-columns: 1fr; } }
@media (max-width: 620px) { .grid--2, .grid--4, .grid--5 { grid-template-columns: 1fr; } }

/* Rounded image frame — recurring shape language (spec §2.3) */
.frame { border-radius: var(--radius-frame); overflow: hidden; border: 1px solid var(--rina-lavender-15); }

/* --- Motion: scroll reveal (spec §2.4) ----------------------------------- */
/* fades in ONCE on first viewport entry; never re-triggers on scroll-back */
[data-reveal] {
  opacity: 0; transform: translateY(var(--reveal-shift));
  transition: opacity var(--reveal-dur) var(--ease-soft), transform var(--reveal-dur) var(--ease-soft);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* --- Signature element: rooftop cat scroll marker (spec §2.5) ------------- */
.cat-marker {
  position: fixed; right: clamp(.5rem, 2vw, 1.75rem); z-index: 40;
  width: 40px; height: 40px; color: var(--rina-lavender);
  pointer-events: none; opacity: .85;
  /* top is set in JS from scroll progress; it "walks" down the margin */
  top: 12vh;
  transition: top .15s linear, opacity .3s var(--ease-soft);
  filter: drop-shadow(0 0 10px rgba(182,164,224,.35));
}
.cat-marker__rail {
  position: fixed; right: calc(clamp(.5rem, 2vw, 1.75rem) + 19px); top: 12vh; bottom: 8vh;
  width: 1px; z-index: 39; pointer-events: none;
  background: linear-gradient(var(--rina-lavender-15), transparent);
}
@media (max-width: 980px) { .cat-marker, .cat-marker__rail { display: none; } }

/* --- Ambient sakura petals (Home hero only — spec §2.4) ------------------ */
.petals { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 1; }
.petal {
  position: absolute; top: -8%; color: var(--rina-blossom); opacity: 0;
  animation: petal-fall var(--_dur, 24s) linear infinite;
  animation-delay: var(--_delay, 0s);
  will-change: transform, opacity;
}
.petal svg { width: 100%; height: 100%; display: block; }
@keyframes petal-fall {
  0%   { transform: translateY(-10vh) translateX(0) rotate(0deg); opacity: 0; }
  10%  { opacity: .7; }
  90%  { opacity: .55; }
  100% { transform: translateY(112vh) translateX(var(--_drift, 40px)) rotate(320deg); opacity: 0; }
}

/* --- Reduced motion (spec §2.4) ------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .petals { display: none; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .cat-marker { transition: none; }
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
}

/* --- Page hero band (shared by interior pages) --------------------------- */
.page-hero { padding-top: 9rem; padding-bottom: 2rem; }
.page-hero h1 { margin-bottom: .3em; }

/* --- Journey panels (spec §4.3) ------------------------------------------
   Full-width image + caption, with [data-parallax] img transformed by JS.
   overflow:hidden on the frame clips the scaled/shifted image so parallax
   never spills past its own panel edges. */
.journey-panel { margin-bottom: var(--section-gap); }
.journey-panel__frame {
  border-radius: var(--radius-frame);
  overflow: hidden;
  border: 1px solid var(--rina-lavender-15);
  aspect-ratio: 16 / 9;
  position: relative;
}
.journey-panel__frame img {
  width: 100%; height: 100%; object-fit: cover;
  will-change: transform;
}
.journey-panel__caption {
  font-family: var(--font-hand);
  color: var(--rina-blossom);
  font-size: 1.3rem;
  margin-top: 1rem;
  text-align: center;
}
@media (max-width: 720px) {
  .journey-panel__frame { aspect-ratio: 4 / 5; }
}