/* ═══════════════════════════════════════════════════════════════════════
   AURUM CENTURY CLUB — DESIGN SYSTEM TOKENS
   Single source of truth. Import on every page.
   ═══════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;1,300;1,400&family=JetBrains+Mono:wght@400&family=DM+Sans:wght@400;500&family=Noto+Serif+KR:wght@400;700&display=swap');

/* ─── Color tokens ─────────────────────────────────────────────────── */
:root {
  --black:        #070706;
  --near:         #0d0d0b;
  --surface:      #111110;
  --border:       rgba(255,255,255,0.07);

  --goldA:        #C5A572;
  --goldB:        #D4AF7A;
  --goldC:        #E3C187;
  --goldD:        #F0CF9A;
  --goldMuted:    rgba(197,165,114,0.12);
  --goldBorderS:  rgba(197,165,114,0.35);
  --goldBorderM:  rgba(197,165,114,0.55);

  --text:         #EDE8DF;
  --muted:        rgba(237,232,223,0.45);
  --dim:          rgba(237,232,223,0.25);

  --green:        #5a9e72;
  --greenBd:      rgba(90,158,114,0.40);
  --amber:        #b8833a;
  --amberBd:      rgba(184,131,58,0.40);
  --red:          #b05e56;
  --redBd:        rgba(176,94,86,0.40);
  --blue:         #5b85b8;
  --blueBd:       rgba(91,133,184,0.40);

  /* ─── Typography ──────────────────────────────────────────────────── */
  --font-display: 'Cormorant Garamond', 'Noto Serif KR', Georgia, serif;
  --font-ui:      'DM Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* ─── Spacing ─────────────────────────────────────────────────────── */
  --pad-x:        clamp(20px, 5.5vw, 88px);
  --gap-section:  clamp(96px, 14vh, 160px);
  --content-max:  1240px;

  /* ─── Motion ──────────────────────────────────────────────────────── */
  --ease-entrance: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:     150ms;
  --dur-base:     280ms;
  --dur-slow:     500ms;
  --dur-reveal:   700ms;
}

/* ─── Korean language override ─────────────────────────────────────── */
[lang="ko"] {
  font-family: 'Noto Serif KR', 'Cormorant Garamond', Georgia, serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-width: 320px;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

em {
  font-style: italic;
}

::selection {
  background: rgba(197, 165, 114, 0.28);
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ─── Gold gradient text utility ───────────────────────────────────── */
.gold-gradient {
  background: linear-gradient(135deg, var(--goldA), var(--goldD));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Aurum Seal ───────────────────────────────────────────────────── */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--goldA);
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--goldA);
  font-size: 20px;
  letter-spacing: -0.04em;
  flex-shrink: 0;
  transition: box-shadow var(--dur-base) ease,
              border-color var(--dur-base) ease;
}

.seal:hover {
  box-shadow: 0 0 16px rgba(197, 165, 114, 0.25);
  border-color: var(--goldB);
}

.seal--lg {
  width: 60px;
  height: 60px;
  font-size: 28px;
}

/* ─── Navigation ───────────────────────────────────────────────────── */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--pad-x);
  background: var(--near);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.nav-wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}

.nav-wordmark-title {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--text);
  text-transform: uppercase;
}

.nav-wordmark-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ─── Mobile bottom nav ────────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--near);
  border-top: 1px solid var(--border);
  padding: 12px var(--pad-x) max(12px, env(safe-area-inset-bottom));
  justify-content: space-around;
  align-items: center;
}

@media (max-width: 768px) {
  .mobile-nav {
    display: flex;
  }
}

/* ─── Buttons ──────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--goldMuted);
  border: 1px solid var(--goldBorderS);
  color: var(--goldB);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--dur-base) ease,
              border-color var(--dur-base) ease,
              color var(--dur-base) ease,
              transform var(--dur-fast) ease,
              box-shadow var(--dur-base) ease;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.btn-primary:hover {
  background: rgba(197, 165, 114, 0.18);
  border-color: var(--goldBorderM);
  color: var(--goldC);
  box-shadow: 0 0 20px rgba(197, 165, 114, 0.12);
}

.btn-primary:active {
  transform: scale(0.985);
  background: rgba(197, 165, 114, 0.08);
}

.btn-primary:disabled,
.btn-primary[aria-busy="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--dur-base) ease,
              color var(--dur-base) ease;
  -webkit-tap-highlight-color: transparent;
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text);
}

/* ─── Form inputs ──────────────────────────────────────────────────── */
.input-field {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 14px 16px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color var(--dur-base) ease,
              box-shadow var(--dur-base) ease;
  border-radius: 0;
}

.input-field::placeholder {
  color: var(--dim);
}

.input-field:focus {
  border-color: var(--goldBorderS);
  box-shadow: 0 0 0 3px rgba(197, 165, 114, 0.08);
}

.input-field:focus-visible {
  outline: none;
}

select.input-field {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(237,232,223,0.3)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.field-error {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--red);
  display: none;
}

.field-error.visible {
  display: block;
}

/* ─── Cards ────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 32px;
  transition: border-color var(--dur-slow) ease,
              transform var(--dur-slow) ease;
}

.card:hover {
  border-color: var(--goldBorderS);
  transform: translateY(-2px);
}

/* ─── Status badges ────────────────────────────────────────────────── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid;
}

.status-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.status-badge--green {
  color: var(--green);
  border-color: var(--greenBd);
  background: rgba(90, 158, 114, 0.06);
}

.status-badge--amber {
  color: var(--amber);
  border-color: var(--amberBd);
  background: rgba(184, 131, 58, 0.06);
}

.status-badge--red {
  color: var(--red);
  border-color: var(--redBd);
  background: rgba(176, 94, 86, 0.06);
}

.status-badge--blue {
  color: var(--blue);
  border-color: var(--blueBd);
  background: rgba(91, 133, 184, 0.06);
}

/* ─── Scroll reveal ────────────────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-reveal) var(--ease-entrance),
              transform var(--dur-reveal) var(--ease-entrance);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger helpers */
[data-reveal][data-delay="100"] { transition-delay: 100ms; }
[data-reveal][data-delay="200"] { transition-delay: 200ms; }
[data-reveal][data-delay="300"] { transition-delay: 300ms; }
[data-reveal][data-delay="400"] { transition-delay: 400ms; }
[data-reveal][data-delay="500"] { transition-delay: 500ms; }

/* ─── Page transition overlay ──────────────────────────────────────── */
.page-veil {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--black);
  opacity: 0;
  pointer-events: none;
  transition: opacity 280ms var(--ease-standard);
}

.page-veil.covering {
  opacity: 1;
  pointer-events: all;
}

/* ─── Divider ──────────────────────────────────────────────────────── */
.divider {
  width: 40px;
  height: 1px;
  background: var(--goldBorderS);
  margin: 0 auto;
}

/* ─── Bilingual system ─────────────────────────────────────────────── */
[data-lang] { display: none; }
.lang-en [data-lang="en"],
.lang-en [data-lang="en"].block { display: inline; }
.lang-en [data-lang="en"].block { display: block; }
.lang-ko [data-lang="ko"],
.lang-ko [data-lang="ko"].block { display: inline; }
.lang-ko [data-lang="ko"].block { display: block; }

/* ─── Language toggle buttons ──────────────────────────────────────── */
.lang-btn {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
}
.lang-btn:hover,
.lang-btn.on {
  color: var(--goldA);
  border-color: var(--goldBorderS);
  background: var(--goldMuted);
}

/* ─── Reduced motion ───────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}