/* 크라우니플레이 랜딩 — 다크 테마 + 퍼플 그라디언트 */

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a28;
  --text: #e8e8f0;
  --text-dim: #8888a0;
  --text-bright: #ffffff;
  --accent: #8b5cf6;
  --accent-2: #c084fc;
  --accent-3: #6d28d9;
  --gradient: linear-gradient(135deg, #8b5cf6, #c084fc, #f472b6);
  --gradient-bg: linear-gradient(180deg, #0a0a0f 0%, #1a1028 100%);
  --border: #2a2a3a;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --font: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { color: var(--text-bright); }

/* 컨테이너 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 800px; }

/* 네비게이션 */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,15,0.85); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.logo { display: flex; align-items: center; gap: 8px; font-size: 18px; color: var(--text-bright); }
.logo-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--gradient); display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: white;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-dim); font-size: 14px; transition: color 0.2s; }
.nav-links a:hover { color: var(--text-bright); }
.btn-nav {
  background: var(--accent); color: white !important; padding: 8px 20px;
  border-radius: 8px; font-weight: 600; font-size: 14px;
}
.btn-nav:hover { background: var(--accent-3); }

/* 버튼 */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--gradient); color: white; font-weight: 600;
  padding: 12px 28px; border-radius: 10px; font-size: 16px;
  transition: transform 0.2s, box-shadow 0.2s; border: none; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(139,92,246,0.4); color: white; }
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--text); font-weight: 600;
  padding: 12px 28px; border-radius: 10px; font-size: 16px;
  border: 1px solid var(--border); cursor: pointer; transition: all 0.2s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-2); }
.btn-lg { padding: 14px 36px; font-size: 17px; }
.btn-xl { padding: 18px 48px; font-size: 19px; }

/* 히어로 */
.hero {
  padding: 160px 24px 100px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(139,92,246,0.15) 0%, transparent 60%);
}
.hero-inner { max-width: 900px; margin: 0 auto; }
.hero-badge {
  display: inline-block; padding: 6px 16px; border-radius: 20px;
  background: rgba(139,92,246,0.15); border: 1px solid rgba(139,92,246,0.3);
  color: var(--accent-2); font-size: 14px; margin-bottom: 24px;
}
.hero h1 { font-size: clamp(36px, 6vw, 64px); font-weight: 800; line-height: 1.2; margin-bottom: 20px; color: var(--text-bright); }
.gradient-text {
  background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { font-size: 19px; color: var(--text-dim); margin-bottom: 36px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-num { font-size: 36px; font-weight: 800; color: var(--text-bright); }
.stat-num span { font-size: 18px; color: var(--text-dim); margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

/* 섹션 */
.section { padding: 100px 0; }
.section-dark { background: var(--gradient-bg); }
.section-badge {
  display: inline-block; padding: 4px 14px; border-radius: 16px;
  background: rgba(139,92,246,0.12); color: var(--accent-2);
  font-size: 13px; font-weight: 600; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px;
}
.section h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; color: var(--text-bright); margin-bottom: 16px; line-height: 1.3; }
.section-sub { font-size: 17px; color: var(--text-dim); margin-bottom: 48px; }
.container > .section-badge, .container > h2, .container > .section-sub { text-align: center; }
.container > h2 { text-align: center; }

/* 문제 카드 */
.problems-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 48px; }
.problem-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; transition: all 0.3s;
}
.problem-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow); }
.problem-icon { font-size: 32px; margin-bottom: 16px; }
.problem-card h3 { font-size: 18px; color: var(--text-bright); margin-bottom: 8px; }
.problem-card p { color: var(--text-dim); font-size: 14px; margin-bottom: 16px; }
.problem-solution {
  background: rgba(139,92,246,0.08); border-radius: 8px; padding: 12px;
  font-size: 13px; color: var(--accent-2);
}
.problem-solution .arrow { margin-right: 6px; }

/* 기능 */
.features-showcase { margin-top: 48px; }
.feature-highlight {
  background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(192,132,252,0.05));
  border: 1px solid rgba(139,92,246,0.3); border-radius: var(--radius-lg);
  padding: 40px; margin-bottom: 32px; position: relative; overflow: hidden;
}
.feature-highlight::before {
  content: ''; position: absolute; top: -50%; right: -20%; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(139,92,246,0.1), transparent 70%); pointer-events: none;
}
.feature-tag {
  display: inline-block; padding: 4px 10px; border-radius: 6px;
  background: var(--accent); color: white; font-size: 12px; font-weight: 700; margin-bottom: 16px;
}
.feature-block h3 { font-size: 28px; color: var(--text-bright); margin-bottom: 12px; }
.feature-block p { color: var(--text-dim); font-size: 16px; max-width: 700px; line-height: 1.8; }
.feature-formula {
  margin-top: 20px; background: rgba(0,0,0,0.3); border-radius: 8px; padding: 14px 20px;
  display: inline-block;
}
.feature-formula code { color: var(--accent-2); font-size: 14px; font-family: 'SF Mono', monospace; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; transition: all 0.3s;
}
.feature-card:hover { border-color: var(--accent); }
.feature-num { font-size: 32px; font-weight: 800; color: rgba(139,92,246,0.3); margin-bottom: 8px; }
.feature-card h4 { font-size: 17px; color: var(--text-bright); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-dim); }

/* 비교 테이블 */
.comparison-table { margin-top: 48px; overflow-x: auto; text-align: center; }
.comparison-table table { width: 100%; border-collapse: collapse; }
.comparison-table th, .comparison-table td {
  padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--border); font-size: 15px;
}
.comparison-table th { color: var(--text-dim); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 1px; }
.comparison-table td { color: var(--text); }
.highlight-col { background: rgba(139,92,246,0.06); color: var(--accent-2) !important; }
.comparison-table thead .highlight-col { background: rgba(139,92,246,0.12); color: var(--accent-2) !important; }

/* 가격 */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 48px; }
.price-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 32px; text-align: center; transition: all 0.3s;
}
.price-card:hover { transform: translateY(-4px); }
.price-featured { border-color: var(--accent); background: linear-gradient(180deg, rgba(139,92,246,0.08), var(--bg-card)); }
.price-badge {
  display: inline-block; padding: 4px 12px; border-radius: 12px;
  background: rgba(139,92,246,0.15); color: var(--accent-2);
  font-size: 13px; font-weight: 600; margin-bottom: 16px;
}
.price-amount { font-size: 32px; font-weight: 800; color: var(--text-bright); margin-bottom: 4px; }
.price-amount span { font-size: 16px; color: var(--text-dim); }
.price-fone { font-size: 14px; color: var(--text-dim); margin-bottom: 20px; }
.price-card ul { list-style: none; margin-bottom: 24px; }
.price-card li { padding: 8px 0; font-size: 14px; color: var(--text-dim); border-bottom: 1px solid rgba(255,255,255,0.04); }
.price-card li::before { content: '✓ '; color: var(--accent-2); }
.pricing-more { text-align: center; margin-top: 32px; color: var(--text-dim); font-size: 14px; }

/* 생태계 */
.ecosystem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 48px; }
.eco-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; text-align: center; transition: all 0.3s;
}
.eco-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.eco-icon { font-size: 40px; margin-bottom: 12px; }
.eco-card h4 { font-size: 16px; color: var(--accent-2); margin-bottom: 8px; font-family: monospace; }
.eco-card p { font-size: 14px; color: var(--text-dim); }

/* FAQ */
.faq-list { margin-top: 48px; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px;
  overflow: hidden; transition: all 0.2s;
}
.faq-item[open] { border-color: var(--accent); }
.faq-item summary {
  padding: 18px 24px; font-size: 16px; font-weight: 600; color: var(--text-bright);
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 20px; color: var(--accent); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 24px 18px; color: var(--text-dim); font-size: 15px; line-height: 1.7; }

/* CTA */
.section-cta {
  text-align: center; padding: 120px 24px;
  background: radial-gradient(ellipse at 50% 50%, rgba(139,92,246,0.12) 0%, transparent 60%);
}
.section-cta h2 { margin-bottom: 16px; }
.section-cta p { color: var(--text-dim); font-size: 17px; margin-bottom: 32px; }

/* 푸터 */
.footer { border-top: 1px solid var(--border); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-desc { color: var(--text-dim); font-size: 14px; margin-top: 8px; }
.footer h5 { color: var(--text-bright); font-size: 14px; margin-bottom: 12px; }
.footer a { display: block; color: var(--text-dim); font-size: 14px; padding: 4px 0; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; text-align: center; }
.footer-bottom p { color: var(--text-dim); font-size: 13px; }

/* 반응형 */
@media (max-width: 768px) {
  .nav-links a:not(.btn-nav) { display: none; }
  .hero { padding: 120px 16px 60px; }
  .hero-stats { gap: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .comparison-table th, .comparison-table td { padding: 12px; font-size: 13px; }
  .features-grid { grid-template-columns: 1fr; }
}