/* =====================================================================
   A Tale of Light - landing page
   Theme: DUALITY - sun ⟷ void, fire ⟷ nebula, light ⟷ dark,
   held in balance down a central seam (per tools/art/logo_hero.py).
   ===================================================================== */

/* ---------- Fonts (self-hosted, OFL) ---------- */
@font-face {
  font-family: "Cinzel";
  src: url("../fonts/Cinzel.ttf") format("truetype");
  font-weight: 400 900;
  font-display: swap;
}
@font-face {
  font-family: "IM Fell English";
  src: url("../fonts/IMFellEnglish-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Jersey 10";
  src: url("../fonts/Jersey10-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

/* ---------- Brand tokens ---------- */
:root {
  /* Palette sampled from the duality disc */
  --night:      #020222;  /* background navy */
  --night-2:    #070733;  /* raised panels */
  --night-3:    #0c0c40;  /* hover / borders */
  --sun-gold:   #fdce1c;  /* sun core / wordmark */
  --sun-soft:   #f7dd86;  /* warm highlight */
  --ember:      #801202;  /* deep flame shadow */
  --ember-lit:  #e8631c;  /* live flame */
  --void:       #212194;  /* eclipse-void blue */
  --void-lit:   #5b5bd6;  /* lit void rim */
  --light:      #fdfdf7;  /* bright seam / highlight */

  --ink:        #d7d4ec;  /* body text on navy */
  --ink-dim:    #9a97c4;  /* muted text */

  --font-display: "Cinzel", "Trajan Pro", Georgia, serif;
  --font-fell:    "IM Fell English", Georgia, serif;
  --font-body:    Georgia, "Times New Roman", serif;

  --maxw: 1120px;
  --seam: linear-gradient(180deg,
            transparent 0%,
            rgba(253, 206, 28, 0) 6%,
            rgba(253, 206, 28, 0.55) 50%,
            rgba(253, 206, 28, 0) 94%,
            transparent 100%);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: var(--sun-soft); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--sun-gold); }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: 0.02em; }

.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;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.9em;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.2s ease;
}
.btn--gold {
  background: linear-gradient(180deg, var(--sun-soft), var(--sun-gold));
  color: #2a1d00;
  box-shadow: 0 0 0 rgba(253, 206, 28, 0);
}
.btn--gold:hover {
  color: #2a1d00;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(253, 206, 28, 0.35), 0 0 16px rgba(253, 206, 28, 0.45);
}
.btn--ghost {
  background: rgba(33, 33, 148, 0.18);
  border-color: rgba(123, 123, 224, 0.5);
  color: var(--ink);
}
.btn--ghost:hover {
  border-color: var(--void-lit);
  color: var(--light);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(33, 33, 148, 0.4);
}
.btn--soon { cursor: not-allowed; opacity: 0.78; flex-direction: column; gap: 0.15em; line-height: 1.2; }
.btn--soon:hover { transform: none; box-shadow: none; }
.btn:disabled { cursor: not-allowed; opacity: 0.72; }
.btn:disabled:hover { transform: none; box-shadow: none; }
.download__os { font-size: 0.95rem; }
.download__tag {
  font-family: var(--font-body); text-transform: none; letter-spacing: 0;
  font-size: 0.72rem; color: var(--sun-soft);
}

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
.nav.is-scrolled {
  background: rgba(2, 2, 34, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(123, 123, 224, 0.18), 0 8px 30px rgba(0, 0, 0, 0.45);
  padding-top: 0.6rem; padding-bottom: 0.6rem;
}
.nav__brand { display: flex; align-items: center; gap: 0.65rem; color: var(--light); }
.nav__brand:hover { color: var(--light); }
.nav__emblem { width: 34px; height: 34px; filter: drop-shadow(0 0 6px rgba(253, 206, 28, 0.4)); }
.nav__title {
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.06em; color: var(--light);
}
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2rem); }
.nav__links a {
  font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink);
}
.nav__links a:hover { color: var(--sun-gold); }
.nav__cta {
  padding: 0.5em 1.1em; border: 1px solid rgba(253, 206, 28, 0.5);
  border-radius: 4px; color: var(--sun-gold) !important;
}
.nav__cta:hover { background: rgba(253, 206, 28, 0.12); box-shadow: 0 0 16px rgba(253, 206, 28, 0.25); }
.nav__toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  cursor: pointer; padding: 6px;
}
.nav__toggle span { width: 26px; height: 2px; background: var(--light); transition: 0.25s; }

/* =====================================================================
   HERO - the duality made spatial: warm sun-side (left), cool void-side
   (right), a seam of light down the centre, the emblem on the seam.
   ===================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  padding: 7rem 1.25rem 4rem;
  overflow: hidden;
  /* Duality background: warm radial anchored left, cool nebula radial right,
     over a deep-night vertical wash. */
  background:
    radial-gradient(120% 90% at 18% 38%, rgba(232, 99, 28, 0.20) 0%, rgba(128, 18, 2, 0.10) 28%, transparent 55%),
    radial-gradient(120% 95% at 82% 42%, rgba(91, 91, 214, 0.22) 0%, rgba(33, 33, 148, 0.12) 30%, transparent 58%),
    radial-gradient(140% 120% at 50% -10%, rgba(253, 206, 28, 0.10) 0%, transparent 45%),
    linear-gradient(180deg, #05052e 0%, var(--night) 55%, #01011a 100%);
}
/* central seam of light */
.hero::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 50%;
  width: 2px; transform: translateX(-50%);
  background: var(--seam);
  opacity: 0.5; pointer-events: none;
}
.hero__embers { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero__veil {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(80% 60% at 50% 50%, transparent 40%, rgba(1, 1, 20, 0.55) 100%);
}
.hero__inner { position: relative; z-index: 2; max-width: 760px; }
.hero__kicker {
  margin: 0 0 1.6rem;
  font-family: var(--font-display);
  font-size: 0.78rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--sun-soft);
}
.hero__kicker::before, .hero__kicker::after { content: "·"; margin: 0 0.7em; color: var(--void-lit); }
.hero__emblem {
  width: clamp(150px, 26vw, 230px); height: auto; margin: 0 auto 1.6rem;
  filter: drop-shadow(0 0 34px rgba(253, 206, 28, 0.30)) drop-shadow(0 0 60px rgba(33, 33, 148, 0.28));
  /* nudge 1px left so the disc's sun/void seam aligns with the hero seam-of-light */
  transform: translateX(-1px);
  animation: float 7s ease-in-out infinite;
}
.hero__wordmark { width: clamp(290px, 62vw, 560px); height: auto; margin: 0 auto 0.4rem; }
.hero__tagline {
  margin: 1.1rem auto 2.2rem; max-width: 30ch;
  font-family: var(--font-fell); font-size: clamp(1.25rem, 3.2vw, 1.7rem);
  line-height: 1.45; color: var(--ink);
}
.hero__actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.hero__scroll {
  position: absolute; bottom: 1.8rem; left: 50%; transform: translateX(-50%);
  z-index: 2; width: 30px; height: 46px;
}
.hero__chev {
  position: absolute; left: 50%; top: 4px; width: 14px; height: 14px;
  border-right: 2px solid var(--sun-soft); border-bottom: 2px solid var(--sun-soft);
  transform: translateX(-50%) rotate(45deg);
  animation: chev 1.8s ease-in-out infinite;
}

@keyframes float { 0%, 100% { transform: translate(-1px, 0); } 50% { transform: translate(-1px, -12px); } }
@keyframes chev { 0%, 100% { opacity: 0.25; top: 4px; } 50% { opacity: 1; top: 12px; } }

/* =====================================================================
   Shared section furniture
   ===================================================================== */
section { position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 3rem; padding: 0 1.25rem; }
.section-head__eyebrow,
.pitch__eyebrow {
  font-family: var(--font-display); font-size: 0.78rem; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--sun-soft); margin: 0 0 0.8rem;
}
.section-head__title {
  font-size: clamp(1.8rem, 4.5vw, 2.7rem); margin: 0; color: var(--light);
  text-shadow: 0 0 30px rgba(33, 33, 148, 0.4);
}
.section-head__title::after {
  content: ""; display: block; width: 70px; height: 2px; margin: 1rem auto 0;
  background: linear-gradient(90deg, transparent, var(--sun-gold), transparent);
}

/* ---------- Pitch ---------- */
.pitch { padding: clamp(5rem, 12vw, 9rem) 1.25rem; }
.pitch__inner { max-width: 720px; margin: 0 auto; text-align: center; }
.pitch__lead {
  font-family: var(--font-fell); font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.5; color: var(--light); margin: 0 0 1.4rem;
}
.dropcap {
  float: left; font-family: var(--font-display); font-weight: 700;
  font-size: 3.4em; line-height: 0.78; padding: 0.06em 0.12em 0 0;
  color: var(--sun-gold); text-shadow: 0 0 24px rgba(253, 206, 28, 0.45);
}
.pitch__body { color: var(--ink); font-size: 1.08rem; margin: 0; }
.pitch__body em { color: var(--sun-soft); font-style: italic; }

/* ---------- Features ---------- */
.features { padding: clamp(4rem, 9vw, 7rem) 1.25rem; }
.feature-grid {
  display: grid; gap: 1.5rem; max-width: var(--maxw); margin: 0 auto;
  grid-template-columns: repeat(2, 1fr);
}
.feature {
  position: relative; padding: 2rem 1.8rem;
  background: linear-gradient(180deg, var(--night-2), rgba(7, 7, 51, 0.45));
  border: 1px solid rgba(123, 123, 224, 0.18);
  border-radius: 10px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.3s ease;
}
.feature:hover {
  transform: translateY(-4px);
  border-color: rgba(253, 206, 28, 0.45);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(253, 206, 28, 0.12);
}
.feature__icon {
  width: 84px; height: 84px; margin-bottom: 1.2rem; border-radius: 10px;
  overflow: hidden; position: relative;
  /* sun⟷void ring echoing the emblem */
  padding: 2px;
  background: linear-gradient(135deg, var(--sun-gold), var(--ember) 40%, var(--void) 60%, var(--void-lit));
}
.feature__icon img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 8px;
  image-rendering: pixelated;
}
.feature__title { font-size: 1.3rem; margin: 0 0 0.6rem; color: var(--light); }
.feature__body { margin: 0; color: var(--ink-dim); font-size: 1rem; line-height: 1.65; }

/* ---------- Media ---------- */
.media { padding: clamp(4rem, 9vw, 7rem) 1.25rem; }

/* The apparition field - glimpses fade in and out at random spots (JS-driven). */
.glimpses {
  position: relative; max-width: var(--maxw); margin: 0 auto;
  height: clamp(440px, 70vh, 720px); overflow: hidden;
}
.glimpses::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(58% 52% at 50% 50%, rgba(33, 33, 148, 0.16), transparent 72%);
}
.glimpse {
  position: absolute; top: 0; left: 0;
  width: clamp(170px, 24vw, 290px);
  opacity: 0; transform: scale(0.9);
  transition: opacity 1.6s ease, transform 2.2s ease;
  will-change: opacity, transform; pointer-events: none;
  filter: drop-shadow(0 14px 46px rgba(0, 0, 0, 0.55));
}
.glimpse.is-in { opacity: var(--peak, 0.86); transform: scale(1); }
.glimpse img { width: 100%; height: auto; display: block; }

.media__note {
  text-align: center; color: var(--ink-dim); font-style: italic;
  margin: 2rem auto 0; font-size: 0.95rem;
}

/* ---------- Join / Download ---------- */
.join {
  padding: clamp(5rem, 11vw, 8rem) 1.25rem;
  text-align: center;
  background:
    radial-gradient(80% 120% at 50% 0%, rgba(33, 33, 148, 0.30), transparent 60%),
    linear-gradient(180deg, var(--night), #04042a);
  border-top: 1px solid rgba(123, 123, 224, 0.16);
}
.join__inner { max-width: 620px; margin: 0 auto; }
.join__title { font-size: clamp(1.9rem, 5vw, 2.8rem); color: var(--light); margin: 0 0 1rem; }
.join__sub { color: var(--ink); margin: 0 auto 2rem; max-width: 46ch; }
.signup {
  display: flex; gap: 0.6rem; max-width: 480px; margin: 0 auto 0.75rem; flex-wrap: wrap;
}
.signup__input {
  flex: 1 1 240px; min-width: 0;
  padding: 0.85em 1.1em; font-size: 1rem; font-family: var(--font-body);
  color: var(--light); background: rgba(2, 2, 34, 0.7);
  border: 1px solid rgba(123, 123, 224, 0.45); border-radius: 4px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.signup__input::placeholder { color: var(--ink-dim); }
.signup__input:disabled { opacity: 0.72; cursor: not-allowed; }
.signup__input:focus {
  outline: none; border-color: var(--sun-gold);
  box-shadow: 0 0 0 3px rgba(253, 206, 28, 0.18);
}
.signup__btn { flex: 0 0 auto; }
.signup__note { font-size: 0.82rem; color: var(--ink-dim); margin: 0 0 2.8rem; }
.signup__note.is-success { color: var(--sun-gold); }

.download { padding-top: 2rem; border-top: 1px solid rgba(123, 123, 224, 0.14); }
.download__note { font-size: 0.85rem; color: var(--ink-dim); margin: 0.9rem 0 0; }

/* ---------- Footer ---------- */
.footer {
  padding: 3rem 1.25rem 2rem;
  background: #01011a;
  border-top: 1px solid rgba(123, 123, 224, 0.16);
}
.footer__inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; flex-wrap: wrap;
}
.footer__brand { display: flex; align-items: center; gap: 0.6rem; }
.footer__emblem { width: 30px; height: 30px; filter: drop-shadow(0 0 6px rgba(253, 206, 28, 0.35)); }
.footer__name { font-family: var(--font-display); color: var(--light); letter-spacing: 0.05em; }
.footer__links, .footer__social { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer__links a, .footer__social a {
  font-size: 0.82rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-dim);
}
.footer__links a:hover, .footer__social a:hover { color: var(--sun-gold); }
.footer__fine {
  max-width: var(--maxw); margin: 2rem auto 0; padding-top: 1.5rem;
  border-top: 1px solid rgba(123, 123, 224, 0.1);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: 0.78rem; color: var(--ink-dim);
}
.footer__fine p { margin: 0; }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .nav__links {
    position: fixed; inset: 0 0 auto 0; top: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 5rem 1.5rem 2rem;
    background: rgba(2, 2, 34, 0.97); backdrop-filter: blur(12px);
    transform: translateY(-100%); transition: transform 0.32s ease;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links a { padding: 1rem 0.5rem; border-bottom: 1px solid rgba(123, 123, 224, 0.12); font-size: 1rem; }
  .nav__cta { border: 0; }
  .nav__toggle { display: flex; z-index: 60; }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .feature-grid { grid-template-columns: 1fr; }
  .glimpses { height: clamp(420px, 96vw, 600px); }
  .glimpse { width: clamp(150px, 44vw, 230px); }
  .footer__inner { flex-direction: column; text-align: center; }
  .footer__fine { justify-content: center; text-align: center; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__emblem, .hero__chev { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}