/* PartyChu 공식 소개 홈페이지 — 공통 스타일시트 */

:root {
  --pink: #FF6FA0;
  --pink-dark: #E0568A;
  --pink-light: #FFF4F8;
  --pink-soft: #FFE4ED;
  --pink-softer: #FFF0F5;
  --pink-border: #FFD6E4;
  --text-dark: #1A1A1A;
  --text-body: #4A4A4A;
  --text-muted: #8A8A8A;
  --white: #FFFFFF;
  --border: #F0DDE4;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(26, 26, 26, 0.05);
  --shadow: 0 12px 30px rgba(255, 111, 160, 0.14);
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── 헤더 / 내비게이션 ─────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.logo span { color: var(--pink); }

.main-nav {
  display: flex;
  gap: 36px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
  transition: color 0.15s ease;
}

.main-nav a:hover { color: var(--pink-dark); }

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dark);
  margin: 0 auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ── 버튼 ──────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--pink);
  color: var(--white);
  box-shadow: var(--shadow);
}

.btn-primary:hover { background: var(--pink-dark); }

.btn-secondary {
  background: var(--white);
  color: var(--pink-dark);
  border-color: var(--pink-border);
}

.btn-secondary:hover { background: var(--pink-softer); }

.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border-color: var(--border);
}

.btn-outline:hover { border-color: var(--pink); color: var(--pink-dark); }

.btn-sm { padding: 10px 20px; font-size: 14px; }

/* ── 히어로 ────────────────────────────────────────────────────────── */

.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(circle at 85% 10%, var(--pink-soft) 0%, transparent 55%),
    linear-gradient(180deg, var(--pink-light) 0%, var(--white) 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--pink-soft);
  color: var(--pink-dark);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -1px;
  margin: 0 0 20px;
}

.hero h1 em {
  font-style: normal;
  color: var(--pink);
}

.hero p.lead {
  font-size: 17px;
  color: var(--text-body);
  max-width: 460px;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
}

.hero-stats div strong {
  display: block;
  font-size: 24px;
  color: var(--text-dark);
  font-weight: 800;
}

.hero-stats div span {
  font-size: 13px;
  color: var(--text-muted);
}

/* 히어로 목업(폰 프레임) */

.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 260px;
  height: 540px;
  border-radius: 40px;
  background: var(--text-dark);
  padding: 14px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.18);
  position: relative;
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 18px;
  background: var(--text-dark);
  border-radius: 0 0 14px 14px;
  z-index: 2;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 28px;
  background: linear-gradient(160deg, var(--pink-light), var(--pink-soft));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.phone-screen .placeholder-badge {
  text-align: center;
  color: var(--pink-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 20px;
}

.phone-screen .placeholder-badge small {
  display: block;
  margin-top: 6px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ── 공통 섹션 ─────────────────────────────────────────────────────── */

.section {
  padding: 88px 0;
}

.section.alt { background: var(--pink-light); }

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 52px;
}

.section-head .eyebrow { display: inline-block; }

.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
  margin: 12px 0 14px;
}

.section-head p {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0;
}

/* 서비스 소개 카드 4개 */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--pink-border);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--pink-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0 0 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* 2단 소개(파티 찾기 / 공간 등록) */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split.reverse .split-visual { order: 2; }
.split.reverse .split-copy { order: 1; }

.split-copy .tag {
  font-size: 13px;
  font-weight: 800;
  color: var(--pink-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  display: block;
}

.split-copy h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-dark);
  margin: 0 0 16px;
  letter-spacing: -0.5px;
}

.split-copy p {
  font-size: 16px;
  color: var(--text-body);
  margin: 0 0 24px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--text-body);
}

.check-list li::before {
  content: "✓";
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--pink-soft);
  color: var(--pink-dark);
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.split-visual {
  background: linear-gradient(160deg, var(--pink-light), var(--white));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.split-visual .visual-placeholder {
  text-align: center;
  color: var(--pink-dark);
}

.split-visual .visual-placeholder .emoji { font-size: 46px; margin-bottom: 12px; }
.split-visual .visual-placeholder small { display: block; color: var(--text-muted); margin-top: 6px; }

/* ── 앱 스크린샷 영역 ──────────────────────────────────────────────── */

.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.screenshot-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
}

.screenshot-mock {
  width: 100%;
  aspect-ratio: 9 / 18;
  border-radius: 22px;
  background: linear-gradient(160deg, var(--pink-soft), var(--pink-light));
  border: 8px solid var(--text-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
}

/*
  실제 배포 시 아래 div.screenshot-mock 내부를 이미지로 교체하세요.
  예) <img src="assets/screenshot-1.png" alt="파티 찾기 화면">
*/

.screenshot-mock span {
  font-size: 13px;
  color: var(--pink-dark);
  font-weight: 700;
  padding: 12px;
}

.screenshot-card h4 {
  margin: 0;
  font-size: 15px;
  color: var(--text-dark);
  font-weight: 700;
}

/* ── 이용 방법(스텝) ───────────────────────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 22px 24px;
}

.step-card .step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--pink);
  color: var(--white);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin: 0 0 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* ── 고객센터 ──────────────────────────────────────────────────────── */

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.support-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}

.support-card .feature-icon { margin: 0 auto 16px; }

.support-card h3 {
  font-size: 16px;
  color: var(--text-dark);
  margin: 0 0 8px;
}

.support-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 4px;
}

.support-card a.btn { margin-top: 16px; }

/* ── CTA 배너 ──────────────────────────────────────────────────────── */

.cta-banner {
  background: linear-gradient(120deg, var(--pink) 0%, var(--pink-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: var(--white);
}

.cta-banner h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 12px;
}

.cta-banner p {
  font-size: 15px;
  opacity: 0.92;
  margin: 0 0 28px;
}

.cta-banner .btn-primary {
  background: var(--white);
  color: var(--pink-dark);
  box-shadow: none;
}

.cta-banner .btn-primary:hover { background: var(--pink-light); }

/* ── 푸터 ──────────────────────────────────────────────────────────── */

.site-footer {
  background: #FCF7F9;
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.footer-brand .logo { display: inline-block; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); max-width: 280px; margin: 0; }

.footer-links {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 13px;
  color: var(--text-dark);
  margin: 0 0 16px;
  font-weight: 700;
}

.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.footer-col ul li a:hover { color: var(--pink-dark); }

.footer-biz {
  padding-top: 28px;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.9;
}

.footer-biz .biz-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}

.footer-biz .biz-row span:not(:last-child)::after {
  content: "|";
  margin-left: 10px;
  color: var(--border);
}

.footer-copy {
  margin-top: 18px;
  font-size: 12.5px;
  color: #B7A0A8;
}

/* ── 내부 페이지(약관/정책) 공통 ──────────────────────────────────── */

.legal-page {
  padding: 64px 0 96px;
}

.legal-page .container { max-width: 820px; }

.legal-page h1 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-dark);
  margin: 0 0 8px;
}

.legal-page .updated {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 40px;
}

.legal-page h2 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-dark);
  margin: 36px 0 12px;
}

.legal-page p, .legal-page li {
  font-size: 15px;
  color: var(--text-body);
  margin: 0 0 10px;
}

.legal-page ul, .legal-page ol {
  padding-left: 20px;
  margin: 0 0 16px;
}
.legal-page ul li { list-style: disc; }
.legal-page ol li { list-style: decimal; }

.legal-page table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 14px;
}

.legal-page table th, .legal-page table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}

.legal-page table th {
  background: var(--pink-light);
  color: var(--text-dark);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--pink-dark);
  margin-bottom: 28px;
}

.placeholder-note {
  background: var(--pink-light);
  border: 1px dashed var(--pink-border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--pink-dark);
  margin-bottom: 32px;
}

/* ── 반응형 ────────────────────────────────────────────────────────── */

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .phone-frame { width: 220px; height: 460px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .screenshot-gallery { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split.reverse .split-visual,
  .split.reverse .split-copy { order: initial; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: none;
  }

  .main-nav.open { display: flex; }

  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--pink-light);
  }

  .nav-toggle { display: flex; }
  .header-cta .btn-secondary { display: none; }

  .hero { padding: 56px 0 56px; }
  .hero h1 { font-size: 32px; }
  .hero p.lead { max-width: none; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }

  .section { padding: 60px 0; }
  .section-head h2 { font-size: 26px; }

  .feature-grid,
  .steps,
  .support-grid,
  .screenshot-gallery {
    grid-template-columns: 1fr;
  }

  .cta-banner { padding: 40px 24px; }
  .cta-banner h2 { font-size: 22px; }

  .footer-top { flex-direction: column; gap: 28px; }
  .footer-links { gap: 32px; }
}