/* ============================================================
   co-crex — base tokens & global rules
   Ported from the Claude Design prototypes (DESIGN.md tokens).
   ============================================================ */

:root {
  /* Color */
  --bg: #0a0a0a;
  --surface: #141414;
  --text: #f5f1ea;
  --text-muted: #a8a29a;
  --text-dim: #857f76;
  --amber: #e8a33d;
  --line: rgba(245, 241, 234, 0.14);
  --amber-line: rgba(232, 163, 61, 0.4);

  /* Type */
  --font-jp: 'Zen Kaku Gothic New', sans-serif;
  --font-en: 'Outfit', sans-serif;
  --font-mincho: 'Shippori Mincho', serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Layout */
  --gutter: 6vw;
  --measure: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  overflow-x: hidden;
  font-family: var(--font-jp);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text);
  text-decoration: none;
}

@media (hover: hover) {
  a:hover {
    color: var(--amber);
  }
}

a:focus-visible,
:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 4px;
}

img {
  max-width: 100%;
}

::selection {
  background: var(--amber);
  color: var(--bg);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Site header ───────────────────────────────────────────── */

.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 24px var(--gutter);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header__logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.site-header__logo-name {
  font-family: var(--font-en);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--text);
}

.site-header__logo-suffix {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

/* The logo is one link: hovering it must not recolor only half the mark. */
.site-header__logo:hover .site-header__logo-name,
.site-header__logo:hover .site-header__logo-suffix {
  color: var(--amber);
}

.site-header__back {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

/* ── Site footer ───────────────────────────────────────────── */

.site-footer {
  padding: 24px var(--gutter) 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}

/* ── Contact caveat (site-wide small note) ─────────────────── */

.contact-caveat {
  margin: 20px 0 0;
  font-size: 11.5px;
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.8;
  color: var(--text-dim);
}