/* ============================================================
   JOEUNAI E&C — Dark Precision Design System
   Syne(EN display) + Noto Serif KR(KO display) + DM Sans(body)
   ============================================================ */

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body {
  background: #06080f;
  color: #ece8e1;
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img, video { max-width: 100%; display: block; }
address { font-style: normal; }

/* CSS VARIABLES */
:root {
  --bg:      #06080f;
  --bg2:     #0b1220;
  --bg-l:    #f5f0ea;
  --ink:     #ece8e1;
  --ink2:    #8a8478;
  --ink-d:   #1a1710;
  --gold:    #c4923a;
  --gold-l:  #e0b05c;
  --border:  rgba(196,146,58,0.12);
  --border2: rgba(236,232,225,0.08);
  --fn-en:   'Syne', sans-serif;
  --fn-ko:   'Noto Serif KR', serif;
  --fn-body: 'DM Sans', sans-serif;
  --wrap:    1280px;
  --pad:     clamp(20px, 5vw, 80px);
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--gold); }

/* ──────────────────── NAVIGATION ──────────────────── */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--pad);
  height: 68px;
  background: transparent;
  transition: background 0.5s, backdrop-filter 0.5s;
}
#nav.solid {
  background: rgba(6,8,15,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { display: flex; flex-direction: column; gap: 2px; }
.nav-en {
  font-family: var(--fn-en); font-weight: 700; font-size: 13px;
  letter-spacing: 0.22em; color: var(--gold-l); text-transform: uppercase; line-height: 1;
}
.nav-ko {
  font-family: var(--fn-body); font-size: 10px; font-weight: 400;
  color: var(--ink2); letter-spacing: 0.05em; line-height: 1;
}
.nav-links {
  list-style: none; display: flex; align-items: center; gap: 40px;
}
.nav-links a {
  font-family: var(--fn-body); font-size: 13px; font-weight: 400;
  letter-spacing: 0.1em; color: var(--ink2);
  position: relative; padding-bottom: 2px;
  transition: color 0.2s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--gold);
  transition: width 0.25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  font-family: var(--fn-body); font-size: 12px; font-weight: 500;
  letter-spacing: 0.15em; color: var(--gold);
  border: 1px solid rgba(196,146,58,0.4);
  padding: 9px 22px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  cursor: pointer;
}
.nav-cta:hover { background: var(--gold); color: var(--bg); border-color: var(--gold); }
.nav-burger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-burger span {
  display: block; width: 22px; height: 1.5px; background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}

/* FOCUS */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ──────────────────── PAGE HERO (서브) ──────────────────── */
.ph {
  position: relative; min-height: 55vh;
  display: flex; align-items: flex-end;
  overflow: hidden; padding-bottom: 72px;
}
.ph-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
}
.ph-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(6,8,15,0.5) 0%, rgba(6,8,15,0.85) 100%);
}
.ph-content { position: relative; z-index: 1; padding: 0 var(--pad); }
.ph-bread {
  font-family: var(--fn-en); font-size: 10px; letter-spacing: 0.35em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 20px; opacity: 0.8;
}
.ph-title {
  font-family: var(--fn-en); font-weight: 800;
  font-size: clamp(52px, 7vw, 110px);
  letter-spacing: -0.01em; line-height: 0.92;
  text-transform: uppercase; color: var(--ink);
}
.ph-title em { color: var(--gold); font-style: normal; }
.ph-sub {
  font-family: var(--fn-ko); font-size: clamp(14px, 1.5vw, 18px);
  font-weight: 400; color: var(--ink2); margin-top: 20px; letter-spacing: 0.03em;
}
.ph-line {
  width: 40px; height: 1px; background: var(--gold); margin-top: 24px;
}

/* ──────────────────── SECTION COMMON ──────────────────── */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); }
.eyebrow {
  font-family: var(--fn-en); font-size: 10px; font-weight: 600;
  letter-spacing: 0.35em; text-transform: uppercase; color: var(--gold);
  margin-bottom: 20px; display: block;
}
.section-title {
  font-family: var(--fn-en); font-weight: 800;
  font-size: clamp(36px, 4.5vw, 64px);
  letter-spacing: -0.01em; line-height: 1; color: var(--ink);
  text-transform: uppercase;
}
.section-title-ko {
  font-family: var(--fn-ko); font-weight: 700;
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.2; color: var(--ink);
}
.section-title.dark, .section-title-ko.dark { color: var(--ink-d); }

/* ──────────────────── BUTTONS ──────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--fn-body); font-size: 13px; font-weight: 500;
  letter-spacing: 0.12em; cursor: pointer;
  min-height: 48px; padding: 0 28px;
  transition: 0.2s ease;
}
.btn-fill { background: var(--gold); color: var(--bg); border: 1px solid var(--gold); }
.btn-fill:hover { background: var(--gold-l); border-color: var(--gold-l); }
.btn-line { background: transparent; color: var(--ink); border: 1px solid var(--border2); }
.btn-line:hover { border-color: var(--gold); color: var(--gold); }

/* ──────────────────── DIVIDER ──────────────────── */
.divider {
  width: 1px; height: 60px; background: var(--gold); opacity: 0.3;
  margin: 40px auto;
}

/* ──────────────────── FOOTER ──────────────────── */
.site-footer {
  background: var(--bg2); border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.footer-wrap {
  max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad);
  display: grid; grid-template-columns: 1.2fr 1.8fr 1fr;
  gap: 48px; align-items: start; margin-bottom: 48px;
}
.footer-en {
  display: block; font-family: var(--fn-en); font-size: 12px; font-weight: 700;
  letter-spacing: 0.25em; color: var(--gold-l); text-transform: uppercase;
  margin-bottom: 8px;
}
.footer-ko { font-family: var(--fn-body); font-size: 11px; color: var(--ink2); }
.footer-addr { display: flex; flex-direction: column; gap: 8px; }
.footer-addr span, .footer-addr a {
  font-family: var(--fn-body); font-size: 12px; font-weight: 300; color: var(--ink2);
  letter-spacing: 0.03em;
}
.footer-addr a:hover { color: var(--gold); }
.footer-nav { display: flex; flex-direction: column; gap: 12px; align-items: flex-end; }
.footer-nav a {
  font-family: var(--fn-body); font-size: 12px; color: var(--ink2);
  transition: color 0.2s; letter-spacing: 0.08em;
}
.footer-nav a:hover { color: var(--gold); }
.footer-copy {
  max-width: var(--wrap); margin: 0 auto; padding: 24px var(--pad) 0;
  border-top: 1px solid var(--border);
}
.footer-copy span {
  font-family: var(--fn-en); font-size: 10px; color: var(--ink2);
  letter-spacing: 0.25em; text-transform: uppercase;
}

/* ──────────────────── RESPONSIVE ──────────────────── */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(6,8,15,0.98); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
  }
  .nav-links.open li { border-bottom: 1px solid var(--border2); }
  .nav-links.open a {
    display: block; padding: 16px var(--pad);
    font-size: 16px; color: var(--ink); min-height: 52px;
  }
  .footer-wrap { grid-template-columns: 1fr; gap: 28px; }
  .footer-nav { align-items: flex-start; flex-direction: row; flex-wrap: wrap; gap: 8px 20px; }
  .ph { min-height: 45vh; padding-bottom: 48px; }
  .ph-title { font-size: clamp(40px, 9vw, 72px); }
}

@media (max-width: 480px) {
  .ph-title { font-size: clamp(32px, 10vw, 52px); }
  .section-title { font-size: clamp(28px, 7vw, 44px); }
  .btn { min-height: 52px; width: 100%; justify-content: center; }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}