/* =========================================================
   EDU1 — Landing Page
   Built by Block Reign · Brand Identity Standards v2.0
   Palette, type & voice per Block Reign Brand Guide
   ========================================================= */

:root {
  /* Primary — Block Reign */
  --ink:        #1C1008;  /* Primary BG        */
  --espresso:   #2C1A0E;  /* Heading / surface */
  --warm-brown: #4A2C1A;  /* Secondary         */
  --cream:      #F5EFE6;  /* Light surface     */
  --off-white:  #FDFAF6;  /* Page background   */

  /* Accent & tertiary */
  --gold:       #C9A84C;  /* Primary accent    */
  --gold-light: #E8C97A;  /* Hover / tint      */
  --cognac:     #8B5E3C;  /* Muted accent      */
  --tan:        #C4956A;  /* Subtext / label   */
  --slate:      #3D3530;  /* Body text         */

  /* EDU1 product neon — used sparingly, on product touchpoints */
  --neon-cyan:   #36E0F0;
  --neon-purple: #9A7BFF;

  /* Tints on dark */
  --cream-70: rgba(245, 239, 230, 0.70);
  --cream-55: rgba(245, 239, 230, 0.55);
  --cream-40: rgba(245, 239, 230, 0.40);
  --hairline: rgba(201, 168, 76, 0.18);
  --surface:  #241509;

  --maxw: 1140px;
  --radius: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-display: 'Lora', Georgia, 'Times New Roman', serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-weight: 300;
  background: var(--ink);
  color: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Typography ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.12; }

.eyebrow {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--tan);
  margin-bottom: 22px;
}
.eyebrow--gold { color: var(--gold); }

.section__title {
  font-size: clamp(1.85rem, 3.6vw, 2.85rem);
  color: var(--cream);
  letter-spacing: -0.01em;
  max-width: 18ch;
}
.section__lead {
  margin-top: 20px;
  max-width: 56ch;
  color: var(--cream-70);
  font-size: 1.02rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease),
              color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  white-space: nowrap;
}
.btn--lg { padding: 1.05em 2em; font-size: 0.92rem; }

.btn--gold {
  background: var(--gold);
  color: var(--ink);
  box-shadow: 0 8px 24px -10px rgba(201, 168, 76, 0.7);
}
.btn--gold:hover { background: var(--gold-light); transform: translateY(-2px); }

.btn--ghost {
  background: transparent;
  color: var(--cream);
  border-color: var(--hairline);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-light); transform: translateY(-2px); }

.btn--neon {
  background: linear-gradient(100deg, var(--neon-cyan), var(--neon-purple));
  color: #0a0a18;
  font-weight: 600;
  box-shadow: 0 10px 30px -10px rgba(106, 160, 255, 0.6);
}
.btn--neon:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -12px rgba(106, 160, 255, 0.75); }
.btn__ext { font-size: 1.05em; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(28, 16, 8, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.nav__logo { height: 30px; width: auto; }
.nav__links {
  display: flex;
  gap: 34px;
  margin-left: auto;
  margin-right: 8px;
}
.nav__links a {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--cream-70);
  transition: color 0.2s var(--ease);
}
.nav__links a:hover { color: var(--gold-light); }
.nav__cta { font-size: 0.8rem; padding: 0.7em 1.3em; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 120px 0 90px;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background: url('assets/hero-bg.png') center 30% / cover no-repeat;
  opacity: 0.55;
  transform: scale(1.04);
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(28,16,8,0.25) 0%, rgba(28,16,8,0.85) 60%, var(--ink) 100%),
    linear-gradient(180deg, rgba(28,16,8,0.6) 0%, rgba(28,16,8,0.4) 40%, var(--ink) 100%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 56px;
}
.hero__copy { max-width: 620px; }
.eyebrow.eyebrow--gold { text-shadow: 0 1px 10px rgba(0,0,0,0.4); }
.hero__title {
  font-size: clamp(2.4rem, 4.6vw, 3.9rem);
  color: var(--cream);
  letter-spacing: -0.015em;
  margin-bottom: 26px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.5);
}
.hero__sub {
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  font-weight: 300;
  color: var(--cream-70);
  max-width: 60ch;
  margin-bottom: 38px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
.hero__attribution {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--cream-55);
}
.hero__attribution strong { color: var(--gold); font-weight: 500; }

/* Hero video */
.hero__media { position: relative; z-index: 2; }
.hero__media .video {
  box-shadow: 0 36px 80px -36px rgba(0, 0, 0, 0.9);
}
.hero__media-cap {
  margin-top: 18px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--cream);
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.hero__media-cap .eyebrow { margin-bottom: 0; }

/* ---------- Stats bar ---------- */
.stats {
  background: var(--espresso);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.stat {
  padding: 52px 28px;
  text-align: center;
  border-left: 1px solid var(--hairline);
}
.stat:first-child { border-left: none; }
.stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  color: var(--gold);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.stat__arrow { color: var(--tan); font-size: 0.8em; }
.stat__label {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cream-55);
}

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section--surface { background: var(--surface); }
.section__head { margin-bottom: 60px; }

/* ---------- Grids ---------- */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- Problem cards ---------- */
.card {
  background: var(--espresso);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 38px 32px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: rgba(201,168,76,0.45); }
.card__index {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 18px;
  opacity: 0.85;
}
.card__title { font-size: 1.3rem; color: var(--cream); margin-bottom: 14px; }
.card__body { color: var(--cream-70); font-size: 0.96rem; }

/* ---------- Steps ---------- */
.steps { display: grid; gap: 20px; }
.step {
  display: grid;
  grid-template-columns: 84px 1fr;
  align-items: start;
  gap: 28px;
  padding: 34px 36px;
  background: var(--espresso);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease);
}
.step:hover { border-color: rgba(201,168,76,0.4); }
.step__num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--gold);
  line-height: 1;
  border-right: 1px solid var(--hairline);
  padding-right: 28px;
}
.step__title { font-size: 1.35rem; color: var(--cream); margin-bottom: 10px; }
.step__body p { color: var(--cream-70); font-size: 0.98rem; max-width: 70ch; }

/* ---------- Demo ---------- */
.demo { overflow: hidden; }
.demo__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.demo__copy .section__title { max-width: 16ch; }
.demo__copy .btn { margin-top: 34px; }
.demo__note { margin-top: 14px; font-size: 0.78rem; color: var(--cream-40); letter-spacing: 0.04em; }

.demo__visual { position: relative; display: flex; justify-content: center; }
.demo__glow {
  position: absolute;
  inset: -10% -6%;
  background: radial-gradient(circle at 50% 45%, rgba(106,160,255,0.30), transparent 62%);
  filter: blur(18px);
  z-index: 0;
}
.demo__card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: linear-gradient(160deg, #15131f 0%, #0e0c17 100%);
  border: 1px solid rgba(106,160,255,0.28);
  border-radius: 22px;
  padding: 40px 34px 34px;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.8);
}
.demo__logo { height: 38px; width: auto; margin-bottom: 30px; }
.demo__bars {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  height: 150px;
  margin-bottom: 26px;
}
.demo__bars span {
  flex: 1;
  height: var(--h);
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
  box-shadow: 0 0 22px -4px rgba(106,160,255,0.6);
  opacity: 0.9;
}
.demo__chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  padding: 0.5em 0.9em;
  border-radius: 999px;
  background: rgba(54,224,240,0.10);
  border: 1px solid rgba(54,224,240,0.35);
  color: #bff4fb;
}
.chip--alt {
  background: rgba(154,123,255,0.12);
  border-color: rgba(154,123,255,0.4);
  color: #d8ccff;
}

/* ---------- Watch / videos ---------- */
.videos { gap: 36px; }
.videos--single { max-width: 880px; margin: 0 auto; }
.video-card { display: flex; flex-direction: column; }
.video {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: #000;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease),
              box-shadow 0.3s var(--ease);
}
.video:hover {
  border-color: rgba(201, 168, 76, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.8);
}
.video:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.video__poster { width: 100%; height: 100%; object-fit: cover; display: block; }
.video__scrim {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(28,16,8,0.10), rgba(28,16,8,0.55));
  transition: background 0.3s var(--ease);
}
.video:hover .video__scrim {
  background: radial-gradient(circle at 50% 50%, rgba(28,16,8,0.02), rgba(28,16,8,0.42));
}
.video__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 74px;
  height: 74px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: var(--ink);
  box-shadow: 0 12px 32px -8px rgba(201, 168, 76, 0.7);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}
.video__play svg { margin-left: 4px; }
.video:hover .video__play { transform: translate(-50%, -50%) scale(1.08); background: var(--gold-light); }
.video.is-playing { cursor: default; }
.video.is-playing:hover { transform: none; box-shadow: none; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-card__cap { padding: 26px 4px 0; }
.video-card__cap .eyebrow { margin-bottom: 12px; }
.video-card__title { font-size: 1.45rem; color: var(--cream); margin-bottom: 10px; }
.video-card__desc { color: var(--cream-70); font-size: 0.96rem; max-width: 46ch; }

/* ---------- Why blockchain features ---------- */
.feature {
  padding: 32px 26px;
  border-top: 2px solid var(--gold);
  background: linear-gradient(180deg, rgba(201,168,76,0.05), transparent 60%);
  border-radius: 4px 4px var(--radius) var(--radius);
}
.feature__title { font-size: 1.16rem; color: var(--cream); margin-bottom: 12px; }
.feature p { color: var(--cream-70); font-size: 0.92rem; }

/* ---------- Audience ---------- */
.audience {
  background: var(--espresso);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 44px 40px;
}
.audience__title { font-size: 1.6rem; color: var(--cream); margin-bottom: 26px; }
.ticklist { list-style: none; display: grid; gap: 14px; }
.ticklist li {
  position: relative;
  padding-left: 30px;
  color: var(--cream-70);
  font-size: 0.96rem;
}
.ticklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(-45deg);
}

/* ---------- Waitlist ---------- */
.waitlist {
  background:
    radial-gradient(120% 140% at 50% 0%, rgba(201,168,76,0.12), transparent 55%),
    var(--espresso);
  border-top: 1px solid var(--hairline);
}
.waitlist__inner { max-width: 720px; margin: 0 auto; text-align: center; }
.waitlist__title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--cream);
  margin-bottom: 18px;
}
.waitlist__sub { color: var(--cream-70); margin-bottom: 38px; font-size: 1.05rem; }
.waitlist__form {
  display: flex;
  gap: 12px;
  max-width: 540px;
  margin: 0 auto 18px;
}
.waitlist__input {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  padding: 1.05em 1.4em;
  border-radius: 999px;
  background: rgba(253,250,246,0.05);
  border: 1px solid var(--hairline);
  color: var(--cream);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.waitlist__input::placeholder { color: var(--cream-40); }
.waitlist__input:focus {
  outline: none;
  border-color: var(--gold);
  background: rgba(253,250,246,0.08);
}
.waitlist__fineprint { font-size: 0.8rem; color: var(--cream-40); letter-spacing: 0.03em; }
.waitlist__fineprint--ok { color: var(--gold-light); }

/* ---------- Footer ---------- */
.footer {
  background: var(--ink);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.footer__logo {
  height: 52px;
  width: auto;
  margin-bottom: 18px;
  /* Espresso mark → cream for dark footer */
  filter: brightness(0) saturate(100%) invert(96%) sepia(8%) saturate(420%) hue-rotate(341deg) brightness(102%) contrast(94%);
  opacity: 0.92;
}
.footer__tagline { max-width: 38ch; color: var(--cream-55); font-size: 0.88rem; }
.footer__meta { text-align: right; font-size: 0.86rem; color: var(--cream-55); }
.footer__meta strong { color: var(--gold); font-weight: 500; }
.footer__copy { margin-top: 10px; color: var(--cream-40); font-size: 0.8rem; }

/* ---------- Reveal animation ---------- */
/* Reveal is a progressive enhancement: only hidden when JS is active,
   so content is always visible if scripts fail or are disabled. */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .nav__links { display: none; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .hero { min-height: auto; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__copy { max-width: 640px; }
  .hero__media { max-width: 600px; }
  .demo__inner { grid-template-columns: 1fr; gap: 48px; }
  .demo__visual { order: -1; }
  .footer__meta { text-align: left; }
}

@media (max-width: 680px) {
  .section { padding: 78px 0; }
  .hero { min-height: auto; padding: 110px 0 72px; }
  .stats__grid { grid-template-columns: 1fr; }
  .stat { border-left: none; border-top: 1px solid var(--hairline); }
  .stat:first-child { border-top: none; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .step { grid-template-columns: 1fr; gap: 16px; padding: 30px 26px; }
  .step__num { border-right: none; padding-right: 0; }
  .waitlist__form { flex-direction: column; }
  .nav__cta { display: none; }
  .footer__inner { flex-direction: column; }
}