/* ============================================================
   GLOBAL / COMPONENT CSS — Kim Chan-Hyuk Portfolio
   Loaded after tokens.css. Contains:
   - Sticky site nav
   - Skip-to-content link (a11y)
   - Mobile menu (hamburger)
   - Page-level FOUC guard
   - Custom scrollbar
   - Reduced-motion safety net
   ============================================================ */

/* ---------- No-FOUC + body baseline ---------- */
html, body { background: var(--bg-0); }
body {
  min-height: 100vh;
  background-image:
    radial-gradient(1100px 600px at 50% -200px, rgba(246,130,31,0.05), transparent 60%);
  background-repeat: no-repeat;
  /* Korean-friendly line breaking: break only at whitespace/punctuation,
     never mid-word (fixes "운영 이\n관" → "운영\n이관"). */
  word-break: keep-all;
  overflow-wrap: anywhere;
  line-break: strict;
}
/* Inherit on every textual element so styles inside section <style> blocks
   that set their own font don't accidentally drop these. */
p, li, span, h1, h2, h3, h4, h5, h6, a, b, strong, em, small, td, th, label, button {
  word-break: keep-all;
  overflow-wrap: anywhere;
}
/* Long URLs / monospace tokens still allowed to wrap anywhere */
code, kbd, samp, pre, .font-mono, [class*="mono"] {
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* ---------- Skip-to-content (a11y) ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  padding: 10px 16px;
  background: var(--cf-orange);
  color: var(--bg-0);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.04em;
  border-radius: var(--r-md);
  z-index: 1000;
}
.skip-link:focus,
.skip-link:focus-visible {
  left: 16px;
  outline: 2px solid var(--bg-0);
  outline-offset: 2px;
}

/* ============================================================
   SITE NAV (sticky, glass)
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(7, 8, 12, 0.55);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition:
    background var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}
.site-nav.is-scrolled {
  background: rgba(7, 8, 12, 0.88);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}

.site-nav__inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5);
  display: flex;
  align-items: center;
  gap: var(--s-5);
}

/* Brand mark */
.site-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-1);
  white-space: nowrap;
}
.site-nav__logo {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--cf-orange);
  color: var(--bg-0);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 16px rgba(246,130,31,0.35);
}
.site-nav__brand-text {
  font-size: 0.92rem;
  color: var(--text-2);
}
.site-nav__brand-text strong { color: var(--text-1); font-weight: 700; }

/* Primary links */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  list-style: none;
  padding: 0;
  margin-block: 0;
}
.site-nav__link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.9rem;
  color: var(--text-2);
  border-radius: var(--r-sm);
  transition: color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
  font-weight: 500;
  letter-spacing: -0.005em;
}
.site-nav__link:hover { color: var(--text-1); background: rgba(255,255,255,0.04); }
.site-nav__link.is-active { color: var(--cf-orange); }

/* Resume CTA */
.site-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cf-orange);
  background: rgba(246,130,31,0.08);
  border: 1px solid rgba(246,130,31,0.35);
  border-radius: var(--r-sm);
  transition:
    background var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out);
  margin-left: var(--s-3);
}
.site-nav__cta:hover {
  background: rgba(246,130,31,0.18);
  border-color: var(--cf-orange);
  color: var(--cf-orange-soft);
  transform: translateY(-1px);
}

/* Hamburger (mobile only) */
.site-nav__burger {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  align-items: center;
  justify-content: center;
  color: var(--text-1);
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.site-nav__burger:hover { background: rgba(255,255,255,0.06); border-color: var(--line-strong); }
.site-nav__burger svg { transition: transform var(--dur) var(--ease-out); }
.site-nav__burger[aria-expanded="true"] svg { transform: rotate(90deg); }

/* Mobile drawer */
@media (max-width: 880px) {
  .site-nav__inner { padding: 0 var(--s-4); }
  .site-nav__brand-text { display: none; }
  .site-nav__burger { display: inline-flex; }

  .site-nav__links,
  .site-nav__cta {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    z-index: 99;
  }

  .site-nav__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--s-3) var(--s-4) var(--s-2);
    background: rgba(7, 8, 12, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-110%);
    transition: transform var(--dur-slow) var(--ease-out);
    pointer-events: none;
  }
  .site-nav__cta {
    top: auto;
    margin-left: 0;
    transform: translateY(-200%);
    transition: transform var(--dur-slow) var(--ease-out);
    pointer-events: none;
    opacity: 0;
  }

  .site-nav.is-open .site-nav__links {
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-nav.is-open .site-nav__cta {
    transform: translateY(0);
    pointer-events: auto;
    opacity: 1;
    /* position the CTA inside the open drawer at the bottom of the list */
    position: static;
    margin: var(--s-3) var(--s-4) var(--s-4);
    align-self: stretch;
    justify-content: center;
  }
  .site-nav.is-open {
    background: rgba(7, 8, 12, 0.92);
    border-bottom-color: var(--line);
  }

  .site-nav__link {
    padding: 12px 14px;
    font-size: 1rem;
    border-radius: var(--r-md);
  }
  .site-nav__link + .site-nav__link {
    border-top: 1px solid var(--line);
    border-radius: 0;
  }
}

/* Push content below fixed nav */
main { padding-top: var(--nav-h); }

/* ============================================================
   Page-level scrollbar (subtle)
   ============================================================ */
@media (pointer: fine) {
  html { scrollbar-color: rgba(246,130,31,0.45) transparent; scrollbar-width: thin; }
  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: var(--bg-0); }
  ::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(246,130,31,0.35), rgba(246,130,31,0.55));
    border-radius: 6px;
    border: 2px solid var(--bg-0);
  }
  ::-webkit-scrollbar-thumb:hover { background: var(--cf-orange); }
}

/* ============================================================
   Section divider helper between large sections
   ============================================================ */
.section-divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ============================================================
   Reduced-motion global guard
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ============================================================
   Print-friendliness (resume export of the page)
   ============================================================ */
@media print {
  .site-nav, .skip-link { display: none !important; }
  main { padding-top: 0; }
  body { background: #fff; color: #000; }
}