/* 로또플랜 공용 디자인 시스템 — DESIGN.md 토큰 기반
   index.html(랜딩)과 2~6번 페이지가 공유하는 컬러/타이포/버튼/네비/폼/카드 기본기 */

:root{
  --primary:#3730A3;
  --primary-focus:#4338CA;
  --primary-on-dark:#818CF8;
  --ink:#1d1d1f;
  --body-on-dark:#ffffff;
  --body-muted:#cccccc;
  --ink-muted-80:#333333;
  --ink-muted-48:#7a7a7a;
  --hairline:#e0e0e0;
  --canvas:#ffffff;
  --canvas-parchment:#f5f5f7;
  --surface-tile-1:#272729;
  --on-primary:#ffffff;
  --error:#dc2626;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ -webkit-font-smoothing:antialiased; }
body{
  font-family:'Pretendard Variable', system-ui, -apple-system, sans-serif;
  color:var(--ink);
  background:var(--canvas);
  line-height:1.47;
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; }

.container{
  max-width:1120px;
  margin:0 auto;
  padding:0 24px;
}
.container-narrow{
  max-width:560px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:inherit;
  font-size:17px;
  font-weight:400;
  letter-spacing:-0.374px;
  border-radius:9999px;
  padding:11px 22px;
  cursor:pointer;
  border:none;
  transition:transform .15s ease;
  white-space:nowrap;
}
.btn:active{ transform:scale(0.95); }
.btn-primary{ background:var(--primary); color:var(--on-primary); }
.btn-primary:focus-visible{ outline:2px solid var(--primary-focus); outline-offset:2px; }
.btn-primary:disabled{ background:var(--hairline); color:var(--ink-muted-48); cursor:not-allowed; }
.btn-ghost{ background:transparent; color:var(--primary); border:1px solid var(--primary); }
.btn-ghost-on-dark{ background:transparent; color:var(--on-primary); border:1px solid rgba(255,255,255,0.4); }
.btn-text{ font-size:14px; color:var(--ink-muted-80); }
.btn-block{ width:100%; }
.btn-sm{ padding:8px 16px; font-size:14px; }

/* ---------- Public header (nav) ---------- */
header.nav{
  height:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  background:var(--canvas);
  border-bottom:1px solid var(--hairline);
  position:sticky;
  top:0;
  z-index:50;
}
.nav .container{ display:flex; align-items:center; justify-content:space-between; width:100%; }
.logo{ font-size:17px; font-weight:600; letter-spacing:-0.374px; }
.nav-right{ display:flex; align-items:center; gap:20px; }
.nav-login{ font-size:14px; color:var(--ink-muted-80); }
.nav-right .btn{ padding:8px 16px; font-size:14px; }

/* ---------- App header (logged-in pages) ---------- */
header.nav-app{
  height:64px;
  display:flex;
  align-items:center;
  background:var(--canvas);
  border-bottom:1px solid var(--hairline);
  position:sticky;
  top:0;
  z-index:50;
}
.nav-app .container{ display:flex; align-items:center; justify-content:space-between; width:100%; }
.nav-app-left{ display:flex; align-items:center; gap:28px; }
.nav-app-menu{ display:flex; gap:20px; }
.nav-app-menu a{ font-size:14px; color:var(--ink-muted-80); }
.nav-app-menu a.active{ color:var(--primary); font-weight:600; }
.nav-app-right{ display:flex; align-items:center; gap:12px; }
.avatar{
  width:32px; height:32px; border-radius:9999px;
  background:var(--primary); color:var(--on-primary);
  display:flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:600;
}
.icon-btn{
  width:36px; height:36px; border-radius:8px;
  border:1px solid var(--hairline); background:var(--canvas);
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; color:var(--ink-muted-80); font-size:16px;
}

/* ---------- Section heading ---------- */
.section-head{ text-align:center; padding:56px 0 32px; }
.section-head h2{ font-size:34px; font-weight:600; line-height:1.2; letter-spacing:-0.374px; margin-bottom:12px; }
.section-head p{ font-size:16px; color:var(--ink-muted-80); max-width:520px; margin:0 auto; }

/* ---------- Cards ---------- */
.card{
  background:var(--canvas);
  border:1px solid var(--hairline);
  border-radius:18px;
  padding:24px;
}
.card-parchment{ background:var(--canvas-parchment); border:none; }

/* ---------- Lotto balls / chips ---------- */
.balls{ display:flex; justify-content:center; gap:10px; flex-wrap:wrap; }
.ball{
  width:44px; height:44px; border-radius:9999px;
  background:var(--primary); color:var(--on-primary);
  display:flex; align-items:center; justify-content:center;
  font-size:15px; font-weight:600; flex-shrink:0;
}
.chip{
  width:32px; height:32px; border-radius:9999px;
  background:var(--primary); color:var(--on-primary);
  font-size:12px; font-weight:600;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.match-badge{
  font-size:12px; font-weight:600; color:var(--primary);
  background:rgba(55,48,163,0.08);
  border-radius:9999px; padding:4px 12px;
}
.badge-on-dark{
  display:inline-block; font-size:12px; color:var(--body-on-dark);
  border:1px solid rgba(255,255,255,0.3); border-radius:9999px; padding:6px 16px;
}

/* ---------- Forms ---------- */
.field{ margin-bottom:16px; text-align:left; }
.field label{ display:block; font-size:13px; font-weight:600; color:var(--ink-muted-80); margin-bottom:6px; }
.field input, .field select{
  width:100%; height:44px; padding:0 16px;
  border:1px solid var(--hairline); border-radius:8px;
  font-family:inherit; font-size:15px; color:var(--ink);
  background:var(--canvas);
}
.field input:focus, .field select:focus{
  outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(55,48,163,0.12);
}
.field .error-msg{ display:none; font-size:12px; color:var(--error); margin-top:6px; }
.field.has-error input{ border-color:var(--error); }
.field.has-error .error-msg{ display:block; }
.field-row{ display:flex; gap:12px; }
.field-row .field{ flex:1; }

.checkbox-row{ display:flex; align-items:center; gap:8px; font-size:14px; color:var(--ink-muted-80); margin-bottom:12px; }
.checkbox-row input{ width:16px; height:16px; accent-color:var(--primary); }

/* ---------- FAQ accordion ---------- */
.faq-item{
  background:var(--canvas); border:1px solid var(--hairline);
  border-radius:11px; margin-bottom:12px; overflow:hidden;
}
.faq-item summary{
  list-style:none; cursor:pointer; padding:18px 20px;
  font-size:15px; font-weight:600;
  display:flex; justify-content:space-between; align-items:center;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; font-weight:400; color:var(--primary); font-size:18px; margin-left:12px; }
.faq-item[open] summary::after{ content:"\2013"; }
.faq-item .answer{ padding:0 20px 18px; font-size:14px; color:var(--ink-muted-80); }

/* ---------- Disclaimer bar ---------- */
.disclaimer-bar{ background:#f7f7f7; padding:16px 0; text-align:center; }
.disclaimer-bar p{ font-size:12px; color:var(--ink-muted-48); line-height:1.3; }

/* ---------- Footer ---------- */
footer{ background:var(--canvas-parchment); color:var(--ink-muted-80); padding:64px 0; }
.footer-grid{ display:grid; grid-template-columns:1.5fr repeat(3, 1fr); gap:32px; margin-bottom:40px; }
.footer-brand .logo{ margin-bottom:12px; }
.footer-brand p{ font-size:14px; color:var(--ink-muted-48); max-width:220px; }
footer h4{ font-size:14px; font-weight:600; letter-spacing:-0.224px; margin-bottom:8px; }
footer ul{ list-style:none; }
footer li a{ display:inline-block; font-size:14px; line-height:2.41; color:var(--ink-muted-80); }
footer li a:hover{ color:var(--primary); }
.footer-legal{ border-top:1px solid var(--hairline); padding-top:24px; font-size:12px; color:var(--ink-muted-48); line-height:1.6; }

/* ---------- Fine print ---------- */
.fine-print{ font-size:12px; color:var(--ink-muted-48); }

/* ---------- Responsive ---------- */
@media (max-width:834px){
  .section-head{ padding:40px 0 24px; }
  .section-head h2{ font-size:26px; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:480px){
  .footer-grid{ grid-template-columns:1fr; }
  .field-row{ flex-direction:column; gap:0; }
}