/* ════════════════════════════════════════════════════════════════════════════
   SHARED CSS FOR TOREN HOMEPAGE
   Common styles extracted from all HTML files
   ════════════════════════════════════════════════════════════════════════════ */

/* ── FONT FACES ── */
@font-face {
  font-family: 'SUIT';
  src: url('fonts/SUIT-Variable.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Jost Variable';
  src: url('fonts/Jost-Variable.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Jost Variable';
  src: url('fonts/Jost-Variable-Italic.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* ── RESET ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── HTML SCROLL ── */
html {
  scroll-behavior: smooth;
}

/* ── ROOT VARIABLES ── */
:root {
  --obsidian: #0a0a0a;
  --navy: #1b2a4e;
  --authority: #2c4270;
  --slate: #5e6675;
  --mist: #a8adb7;
  --hairline: #d9d6ce;
  --ivory: #f7f6f2;
  --white: #ffffff;
  --font-en: 'Jost Variable', sans-serif;
  --font-kr: 'SUIT', sans-serif;
  /* ── TYPE SCALE — visual-normalized, EN base ── */
  --t-display: clamp(32px, 4.5vw, 60px);
  --t-h1: clamp(26px, 3.4vw, 48px);
  --t-h2: clamp(20px, 2.5vw, 34px);
  --t-h2-sm: clamp(18px, 2vw, 26px);
  --t-h3: 18px;
  /* ── LAYOUT ── */
  --wrap: 1200px;
  --col-wide: 1080px;
  --col-text: 720px;
  --col-narrow: 520px;
  --pad-v: 120px;
  --pad-h: 72px;
}

/* ── KO TYPE SCALE: SUIT fills em square more completely than Century Gothic ── */
/* Consistent ~8% reduction maintains visual parity across EN/KO toggle */
body.ko {
  --t-display: clamp(30px, 4.2vw, 56px);
  --t-h1: clamp(24px, 3.1vw, 44px);
  --t-h2: clamp(18px, 2.3vw, 31px);
  --t-h2-sm: clamp(17px, 1.85vw, 24px);
  --t-h3: 17px;
}

/* ── BODY ── */
body {
  background: var(--white);
  color: var(--obsidian);
  font-family: var(--font-en);
  font-weight: 400;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* ════════════════════════════════════════════════════════════════════════════
   NAVIGATION
   ════════════════════════════════════════════════════════════════════════════ */

/* ── NAV BASE (light theme default) ── */
#nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 300;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 52px;
  background: rgba(247, 246, 242, 0.75);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s;
}
#nav.scrolled {
  border-color: var(--hairline);
}

/* ── LOGO ── */
.logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}
.logo-img {
  height: 44px;
  width: auto;
  display: block;
}
.logo-light {
  display: none;
}

/* ── LOGO DARK (default light theme) ── */
.logo-dark {
  display: block;
}

/* ── NAV LINKS ── */
.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--obsidian);
}
.nav-links a.active {
  color: var(--obsidian);
}

/* ── NAV END (lang switch + CTA) ── */
.nav-end {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* ── LANGUAGE SWITCH ── */
.lang-switch {
  display: flex;
  background: var(--ivory);
  border: 1px solid var(--hairline);
  border-radius: 40px;
  padding: 3px;
  gap: 1px;
}
.lang-switch button {
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 40px;
  border: none;
  background: transparent;
  color: var(--mist);
  cursor: pointer;
  transition: all 0.2s;
}
.lang-switch button.on {
  background: var(--navy);
  color: var(--white);
}

/* ── NAV CTA ── */
.nav-cta {
  font-size: 11px;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  padding: 9px 22px;
  background: var(--navy);
  border: 1px solid var(--navy);
  border-radius: 2px;
  transition: all 0.22s;
  white-space: nowrap;
  min-width: 170px;
  text-align: center;
  display: inline-block;
  box-sizing: border-box;
}
.nav-cta:hover {
  background: var(--authority);
  border-color: var(--authority);
}

/* ── BURGER (mobile nav trigger) ── */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 20px;
  height: 1px;
  background: var(--obsidian);
  transition: all 0.3s;
}

/* ── MOBILE NAV (hidden by default, shown with .open) ── */
.mob-nav {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--hairline);
  padding: 20px 28px 28px;
  z-index: 299;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}
.mob-nav.open {
  display: flex;
}
.mob-nav a {
  font-size: 15px;
  color: var(--obsidian);
  font-weight: 500;
  text-decoration: none;
  padding: 15px 0;
  border-bottom: 1px solid var(--hairline);
}
.mob-bottom {
  margin-top: 24px;
  display: flex;
  align-items: center;
}

/* ════════════════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════════════════ */

footer {
  background: var(--obsidian);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 32px var(--pad-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.foot-logo img {
  height: 20px;
  width: auto;
  display: block;
}
.foot-copy {
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.6);
}
.foot-links {
  display: flex;
  gap: 28px;
}
.foot-links a {
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.2s;
}
.foot-links a:hover {
  color: rgba(255, 255, 255, 0.9);
}

/* ════════════════════════════════════════════════════════════════════════════
   ANIMATIONS & UTILITIES
   ════════════════════════════════════════════════════════════════════════════ */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.fade.in {
  opacity: 1;
  transform: translateY(0);
}

.fd1 {
  transition-delay: 0.1s;
}
.fd2 {
  transition-delay: 0.2s;
}
.fd3 {
  transition-delay: 0.3s;
}
.fd4 {
  transition-delay: 0.4s;
}

/* ── KICKER ── */
.kicker {
  font-size: 10px;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--navy);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.kicker::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--navy);
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════════════════════
   RESPONSIVE: TABLET (960px)
   ════════════════════════════════════════════════════════════════════════════ */

@media (max-width: 960px) {
  :root {
    --pad-v: 80px;
    --pad-h: 28px;
  }
  #nav {
    padding: 0 28px;
    height: 72px;
  }
  .nav-links,
  .nav-cta,
  #nav .lang-switch {
    display: none;
  }
  .burger {
    display: flex;
  }
  .mob-nav {
    top: 72px;
  }
  footer {
    padding: 24px var(--pad-h);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .foot-links {
    flex-wrap: wrap;
  }
}

/* ════════════════════════════════════════════════════════════════════════════
   RESPONSIVE: MOBILE (560px)
   ════════════════════════════════════════════════════════════════════════════ */

@media (max-width: 560px) {
  :root {
    --pad-v: 56px;
    --pad-h: 20px;
  }
  .foot-logo img {
    height: 12px;
  }
}