/* halfthing 홈페이지 스타일 — 다크 모던, 외부 리소스 의존성 없음 */

:root {
  --bg: #0b1120;
  --bg-soft: #0f172a;
  --card: #111a2e;
  --line: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --a: #3b82f6;
  --b: #06b6d4;
  --radius: 18px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.muted { color: var(--muted); }

/* ── 브랜드 ── */
.brand {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.02em;
}
.brand span {
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand.small { font-size: 18px; }

/* ── 내비게이션 ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 17, 32, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 15px; transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }

/* ── 버튼 ── */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  background: linear-gradient(90deg, var(--a), var(--b));
  color: #fff;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--a) 70%, transparent);
}
.btn:hover { transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  box-shadow: none;
}
.btn.disabled { opacity: 0.55; cursor: default; pointer-events: none; }

/* ── 배지 ── */
.badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.badge-soon {
  color: #bae6fd;
  background: rgba(6, 182, 212, 0.14);
  border: 1px solid rgba(6, 182, 212, 0.35);
}
.badge-prep {
  color: #fcd9a8;
  background: rgba(249, 115, 22, 0.12);
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.section-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
}

/* ── 히어로 ── */
.hero {
  position: relative;
  padding: 110px 0 90px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% 0 auto 0;
  height: 520px;
  background:
    radial-gradient(600px 300px at 30% 20%, rgba(59, 130, 246, 0.22), transparent 70%),
    radial-gradient(560px 300px at 72% 10%, rgba(6, 182, 212, 0.18), transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  margin-bottom: 22px;
}
.hero-title {
  position: relative;
  font-size: clamp(38px, 7vw, 68px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 0 0 20px;
}
.grad {
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  position: relative;
  max-width: 560px;
  margin: 0 auto 34px;
  font-size: 18px;
  color: var(--muted);
}

/* ── 제품 그리드 ── */
.products { padding: 40px 0 90px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.grid-sm { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--a), var(--b));
}
.card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--a) 55%, var(--line));
  box-shadow: 0 24px 48px -24px color-mix(in srgb, var(--a) 60%, transparent);
}
.card-visual {
  background:
    radial-gradient(120% 120% at 50% 0%,
      color-mix(in srgb, var(--a) 16%, transparent), transparent 60%),
    var(--bg-soft);
  padding: 12px;
}
.card-body { padding: 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-cat { font-size: 13px; color: var(--muted); }
.card-name { font-size: 22px; font-weight: 800; margin: 2px 0 0; letter-spacing: -0.02em; }
.card-tagline { color: var(--muted); font-size: 15px; margin: 0; }
.card-link {
  margin-top: auto;
  padding-top: 12px;
  font-weight: 600;
  font-size: 14.5px;
  background: linear-gradient(90deg, var(--a), var(--b));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.illust { width: 100%; height: auto; display: block; border-radius: 12px; }

.note { text-align: center; margin-top: 40px; font-size: 15px; }

/* ── 제품 상세 히어로 ── */
.phero {
  position: relative;
  padding: 72px 0 64px;
  overflow: hidden;
}
.phero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(700px 340px at 78% 12%,
    color-mix(in srgb, var(--a) 20%, transparent), transparent 70%);
  pointer-events: none;
}
.phero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.phero-title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 16px 0 6px;
}
.phero-cat { color: var(--muted); font-size: 15px; margin: 0 0 18px; }
.phero-tagline {
  font-size: 21px;
  font-weight: 600;
  margin: 0 0 14px;
  background: linear-gradient(90deg, var(--a), var(--b));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.phero-sum { color: var(--muted); font-size: 16.5px; margin: 0 0 28px; }
.phero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.phero-legal { margin: 16px 0 0; font-size: 13.5px; }
.phero-legal a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.phero-legal a:hover { color: var(--text); }
.phero-visual { min-width: 0; }

/* ── 기능 ── */
.features { padding: 70px 0; }
.fgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.fcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.fcard h3 { margin: 0 0 8px; font-size: 17.5px; font-weight: 700; }
.fcard p { margin: 0; color: var(--muted); font-size: 15px; }

.other { padding: 20px 0 90px; }

/* ── 약관/개인정보 처리방침 ── */
.legal { padding: 56px 0 80px; }
.legal-doc { max-width: 760px; margin: 0 auto; }
.legal-title { font-size: clamp(26px, 4vw, 32px); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 8px; }
.legal-meta { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
.legal-h2 {
  font-size: 20px; font-weight: 700; letter-spacing: -0.01em;
  margin: 34px 0 12px; padding-top: 22px; border-top: 1px solid var(--line);
}
.legal-h3 { font-size: 16px; font-weight: 700; color: var(--text); margin: 22px 0 8px; }
.legal-doc p { color: var(--muted); font-size: 15px; line-height: 1.75; margin: 0 0 12px; }
.legal-list { margin: 0 0 16px; padding-left: 22px; }
.legal-list li { color: var(--muted); font-size: 15px; line-height: 1.7; margin: 3px 0; }
.legal-doc a { color: var(--a); }
.legal-doc a:hover { text-decoration: underline; }

/* ── 푸터 ── */
.footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 20px; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-inner p { margin: 4px 0 0; font-size: 14px; }
.footer-meta { display: flex; flex-direction: column; gap: 4px; font-size: 14px; text-align: right; }
.footer-meta a:hover { color: var(--text); }

/* ── 반응형 ── */
@media (max-width: 760px) {
  .phero-inner { grid-template-columns: 1fr; gap: 28px; }
  .phero-visual { order: -1; }
  .nav-links { gap: 18px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}