/* SNVR — Premium Design System */
:root {
  --bg: #030507;
  --bg-elevated: #080b0f;
  --surface: #0c1014;
  --surface-hover: #11161c;
  --border: #1a222c;
  --border-subtle: #0d1117;
  --text: #f4f6f8;
  --text-secondary: #9ca3af;
  --muted: #6b7280;
  --accent: #2AABEE;
  --accent-hover: #3bb5f5;
  --accent-dim: rgba(42, 171, 238, 0.12);
  --silver: #c4c8cc;
  --silver-bright: #e2e6ea;
  --silver-dim: #8b9199;
  --gold: #c9a227;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(ellipse 100% 60% at 50% -30%, rgba(196,200,204,0.04) 0%, transparent 60%),
    radial-gradient(ellipse 80% 40% at 80% 20%, rgba(42,171,238,0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}
.container { max-width: 1140px; margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }
section { padding: 120px 0; }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1.15; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 600; letter-spacing: -0.03em; margin-bottom: 20px; }
h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; }
p { color: var(--text-secondary); font-size: 1.05rem; }
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(3, 5, 7, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
  overflow: visible;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  transition: opacity 0.2s;
}
.logo img {
  height: 46px;
  display: block;
}
.logo:hover { opacity: 0.9; }
.logo-text {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--silver-bright);
  text-shadow: 0 0 40px rgba(196,200,204,0.15);
}
.accent { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 36px; }
nav { display: flex; gap: 32px; }
nav a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}
nav a:hover { color: var(--silver-bright); }
nav a.active { color: var(--silver-bright); }

/* Lang selector */
.lang-select { position: relative; }
.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-btn:hover { border-color: var(--silver-dim); color: var(--text); }
.lang-btn svg { width: 16px; height: 16px; opacity: 0.7; }
.lang-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 190px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s;
  z-index: 300;
  pointer-events: none;
}
.lang-select.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
.lang-option {
  display: block;
  width: 100%;
  padding: 12px 16px;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s;
}
.lang-option:hover { background: var(--surface-hover); color: var(--text); }
.lang-option.active { color: var(--silver-bright); font-weight: 500; }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 76px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 30%, rgba(42, 171, 238, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero .container { max-width: 760px; position: relative; z-index: 1; }
.hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: rgba(196,200,204,0.06);
  border: 1px solid rgba(196,200,204,0.2);
  border-radius: 100px;
  color: var(--silver);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.hero h1 {
  margin-bottom: 28px;
  color: var(--silver-bright);
  text-shadow: 0 0 60px rgba(196,200,204,0.1);
}
.hero .tagline {
  font-size: 1.4rem;
  color: var(--silver);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.hero p {
  max-width: 580px;
  margin: 0 auto 44px;
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 36px;
  background: linear-gradient(135deg, var(--silver-dim) 0%, var(--silver) 100%);
  color: var(--bg);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
}
.btn:hover { 
  background: linear-gradient(135deg, var(--silver) 0%, var(--silver-bright) 100%); 
  transform: translateY(-2px); 
  box-shadow: 0 8px 24px rgba(196,200,204,0.2);
  text-decoration: none; 
  color: var(--bg); 
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #1e8bc8 100%);
  color: #fff;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
  box-shadow: 0 8px 32px rgba(42, 171, 238, 0.35);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--silver-bright);
  margin-left: 14px;
}
.btn-outline:hover { 
  border-color: var(--silver); 
  color: var(--silver-bright); 
  background: rgba(196,200,204,0.06); 
}

/* Cards */
.feature-card, .tokenomics-item, .roadmap-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s;
}
.feature-card:hover {
  border-color: rgba(196,200,204,0.2);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

/* Footer */
footer {
  padding: 64px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
footer p { font-size: 0.9rem; margin: 8px 0; color: var(--muted); }
footer .links { margin-top: 24px; display: flex; justify-content: center; gap: 36px; flex-wrap: wrap; }
footer .links a { color: var(--text-secondary); font-weight: 500; }
footer .links a:hover { color: var(--silver-bright); }

/* CMS 상단 공지 (관리자에서 설정) */
.site-cms-banner {
  width: 100%;
  padding: 10px 16px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text);
  background: linear-gradient(90deg, rgba(42,171,238,0.2), rgba(42,171,238,0.08));
  border-bottom: 1px solid var(--border);
}

@media (max-width: 768px) {
  section { padding: 80px 0; }
  nav { display: none; }
  .hero .btn-outline { margin-left: 0; margin-top: 14px; }
}