/* =========================================================================
   HYPER GLOBAL K — Brand theme (gold on premium black)
   Grounded in WizClass DS structure: Pretendard type, cinematic motion,
   black + single signal accent (here: GOLD instead of orange).
   ========================================================================= */
@font-face {
  font-family: "Pretendard";
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
  src: url("fonts/PretendardVariable.woff2") format("woff2-variations");
}

:root {
  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;

  /* ── Surfaces ── */
  --black:      #000000;
  --ink:        #0A0A0A;   /* primary dark section */
  --ink-2:      #0E0D0B;   /* warm-tinted dark */
  --surface:    #141310;   /* elevated dark card */
  --surface-2:  #1B1813;   /* raised */
  --paper:      #FAF8F3;   /* light contrast block */
  --paper-2:    #F1ECE1;   /* light subtle */

  /* ── Gold signal accent (tweakable) ── */
  --gold:       #E0A82E;
  --gold-light: #F2C14E;
  --gold-deep:  #C9962B;
  --gold-grad:  linear-gradient(120deg, #C9962B 0%, #F2D17A 48%, #E0A82E 100%);
  --gold-glow:  0 0 60px rgba(224,168,46,0.22);

  /* ── Text ── */
  --white:      #FFFFFF;
  --gray:       #B3B3B3;
  --gray-dim:   #8A8A8A;
  --gray-faint: #5C5A55;
  --ink-text:   #0A0A0A;     /* on light blocks */
  --ink-sub:    #5E5A52;

  /* ── Lines ── */
  --line:       rgba(255,255,255,0.10);
  --line-soft:  rgba(255,255,255,0.06);
  --line-gold:  rgba(224,168,46,0.32);
  --line-dark:  rgba(10,10,10,0.12);

  /* ── Radius ── */
  --r-sm: 8px;  --r-md: 14px;  --r-lg: 20px;  --r-xl: 28px;  --r-pill: 999px;

  /* ── Motion ── */
  --ease: cubic-bezier(0.22,0.61,0.36,1);
  --ease-io: cubic-bezier(0.65,0,0.35,1);
  --dur: 600ms;

  /* ── Layout ── */
  --maxw: 1280px;
  --gutter: 40px;
}

* { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--black); color: var(--white);
  font-family: var(--font-sans); font-weight: 400;
  overflow-x: hidden;
}
::selection { background: var(--gold); color: #000; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Reusable type ── */
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--gold); display: inline-flex; align-items: center; gap: 14px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--gold); opacity: 0.7; }
.eyebrow.center { justify-content: center; }
.eyebrow.no-rule::before { display: none; }

.display {
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.02;
  font-size: clamp(40px, 6vw, 92px); margin: 0;
}
.gold-text { color: var(--gold); }
.serif-accent { font-style: italic; }

/* ── Layout helpers ── */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { position: relative; padding: clamp(80px, 11vh, 140px) 0; }
.section.dark   { background: var(--ink); }
.section.black  { background: var(--black); }
.section.warm   { background: var(--ink-2); }
.section.light  { background: var(--paper); color: var(--ink-text); }

.sec-head { max-width: 760px; margin: 0 0 64px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head .title {
  font-weight: 800; letter-spacing: -0.025em; line-height: 1.05;
  font-size: clamp(32px, 4.4vw, 60px); margin: 18px 0 0;
}
.sec-head .lede { margin: 22px 0 0; font-size: clamp(15px,1.2vw,18px); line-height: 1.7; color: var(--gray); max-width: 620px; }
.sec-head.center .lede { margin-left: auto; margin-right: auto; }
.section.light .lede { color: var(--ink-sub); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  font-family: inherit; font-size: 14px; font-weight: 700; letter-spacing: 0.02em;
  padding: 15px 28px; border-radius: var(--r-pill); border: 1px solid transparent;
  transition: all 0.3s var(--ease);
}
.btn-gold { background: var(--gold); color: #1a1305; }
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: var(--gold-glow); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.24); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn .arr { transition: transform 0.3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ── Scroll reveal ── */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }
[data-reveal][data-delay="5"] { transition-delay: 0.40s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}