/* ============================================
   Mandatum — Tokens & Global Styles
   ============================================ */

:root {
  /* Color — cream aged paper, ink, cinnabar */
  --paper: oklch(0.97 0.012 85);
  --paper-deep: oklch(0.94 0.015 82);
  --paper-shadow: oklch(0.90 0.018 80);
  --ink: oklch(0.22 0.015 60);
  --ink-soft: oklch(0.38 0.012 60);
  --ink-mute: oklch(0.55 0.010 60);
  --rule: oklch(0.85 0.015 75);
  --rule-soft: oklch(0.90 0.012 78);
  --cinnabar: oklch(0.55 0.16 40);
  --cinnabar-deep: oklch(0.45 0.17 38);
  --gold: oklch(0.68 0.09 75);

  /* Dark mode tokens (used by female/male variant or tweaks) */
  --ink-paper: oklch(0.15 0.012 60);
  --ink-paper-deep: oklch(0.11 0.010 60);

  /* Type */
  --serif: "Cormorant Garamond", "Source Serif Pro", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --hanja: "Noto Serif KR", "Cormorant Garamond", serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --gutter: clamp(20px, 4vw, 48px);
  --max: 1280px;
  --max-narrow: 960px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Subtle paper texture via layered gradients */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(ellipse at 20% 10%, oklch(0.95 0.018 80 / 0.5), transparent 50%),
    radial-gradient(ellipse at 80% 90%, oklch(0.94 0.020 75 / 0.4), transparent 60%);
  mix-blend-mode: multiply;
}

main, header, footer, section { position: relative; z-index: 1; }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.05;
  text-wrap: balance;
}

h1 { font-size: clamp(48px, 8vw, 112px); font-weight: 300; }
h2 { font-size: clamp(36px, 5.5vw, 72px); font-weight: 300; }
h3 { font-size: clamp(24px, 3vw, 36px); }

p { text-wrap: pretty; }

.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--cinnabar);
}

.eyebrow.ink { color: var(--ink-mute); }

.hanja {
  font-family: var(--hanja);
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--cinnabar-deep);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid var(--ink);
}
.btn-link:hover { color: var(--cinnabar); border-color: var(--cinnabar); }

.btn .arr {
  display: inline-block;
  transition: transform 0.25s ease;
}
.btn:hover .arr { transform: translateX(4px); }

/* Section scaffolding */
.section {
  padding: clamp(80px, 12vh, 160px) var(--gutter);
  position: relative;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
}

.wrap-narrow {
  max-width: var(--max-narrow);
  margin: 0 auto;
}

.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}

/* Watermark hanja */
.watermark {
  position: absolute;
  font-family: var(--hanja);
  font-weight: 200;
  color: var(--cinnabar);
  opacity: 0.055;
  pointer-events: none;
  user-select: none;
  line-height: 0.85;
  letter-spacing: -0.04em;
  z-index: 0;
}

/* Placeholder image — striped */
.ph {
  position: relative;
  background:
    repeating-linear-gradient(
      45deg,
      oklch(0.90 0.015 78),
      oklch(0.90 0.015 78) 12px,
      oklch(0.93 0.013 80) 12px,
      oklch(0.93 0.013 80) 24px
    );
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.ph-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--paper);
  padding: 6px 10px;
  border: 1px solid var(--rule);
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* Utility */
.num-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--ink-mute);
}

.divider-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--cinnabar);
  border-radius: 50%;
  margin: 0 10px;
  vertical-align: middle;
}

/* Selection */
::selection { background: var(--cinnabar); color: var(--paper); }

/* Responsive */
@media (max-width: 768px) {
  .section { padding: 80px var(--gutter); }
}