:root {
  --bg: #0f1115;
  --bg-soft: #161a21;
  --card: #1a1f27;
  --border: #2a3038;
  --text: #e7e9ec;
  --muted: #9aa3ad;
  --accent: #4f8cff;
  --accent-2: #6ea8ff;
  --ok: #34d399;
  --warn: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

/* nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px var(--accent);
}
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 14px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.lang-switch {
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
}
.inline { margin: 0; }
.linklike {
  background: none; border: none; color: var(--muted);
  cursor: pointer; font-size: 14px; padding: 0;
}
.linklike:hover { color: var(--text); }

/* layout */
.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }
.page-head { margin-bottom: 20px; }
.page-head h1 { margin: 0 0 4px; font-size: 26px; }
.page-head .muted { margin: 0; }
.back { display: inline-block; margin-bottom: 14px; font-size: 14px; }

/* landing */
.landing { max-width: 1000px; margin: 0 auto; padding: 0 24px 60px; }
.hero { text-align: center; padding: 90px 0 56px; }
.hero h1 { font-size: 42px; line-height: 1.15; margin: 0 0 18px; }
.hero .sub { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto 32px; }
.features h2 { text-align: center; font-size: 24px; margin: 24px 0 28px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 { margin: 0 0 8px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.footer { text-align: center; color: var(--muted); font-size: 13px; margin-top: 60px; }

/* buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--accent-2); text-decoration: none; }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn.warn { background: #3a2f1b; color: #fbbf24; }
.btn.warn:hover { background: #4a3a1e; }
.btn.primary { background: var(--accent); }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* auth */
.auth { display: flex; justify-content: center; padding: 60px 24px; }
.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 380px;
}
.auth-card h1 { margin: 0 0 4px; font-size: 24px; }
.auth-card .muted { margin: 0 0 22px; }
.auth-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.auth-card input {
  display: block; width: 100%; margin-top: 6px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 12px; color: var(--text); font-size: 15px;
}
.auth-card input:focus { outline: none; border-color: var(--accent); }
.auth-card .btn { width: 100%; margin-top: 8px; }

/* alerts */
.alert {
  background: rgba(239, 68, 68, .12);
  border: 1px solid rgba(239, 68, 68, .4);
  color: #fca5a5;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
}
.muted { color: var(--muted); }
.ok { color: var(--ok); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

/* table */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.table thead th { background: var(--bg-soft); color: var(--muted); font-weight: 600; font-size: 13px; }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--bg-soft); }
.table tr.expiring { background: rgba(245, 158, 11, .07); }
.soon {
  display: inline-block; margin-left: 8px;
  background: rgba(245, 158, 11, .18);
  color: #fbbf24; font-size: 11px;
  padding: 1px 8px; border-radius: 999px;
}

/* badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.s0, .badge.s2, .badge.s12 { background: rgba(154, 163, 173, .15); color: #cbd5e1; }
.badge.s1 { background: rgba(52, 211, 153, .16); color: #34d399; }
.badge.s3 { background: rgba(239, 68, 68, .16); color: #f87171; }
.badge.s4 { background: rgba(245, 158, 11, .16); color: #fbbf24; }
.badge.s10, .badge.s11 { background: rgba(79, 140, 255, .16); color: #93b8ff; }

/* account badges + summary */
.account-summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.account-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(79, 140, 255, .14);
  color: #93b8ff;
}
.account-badge[data-account="b"] {
  background: rgba(168, 85, 247, .14);
  color: #d8b4fe;
}
.account-badge-lg { padding: 5px 14px; font-size: 13px; }
.account-badge-lg .acct-count {
  background: rgba(0, 0, 0, .25);
  border-radius: 999px;
  padding: 0 8px;
  font-variant-numeric: tabular-nums;
}
.account-total {
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}
.account-total strong { color: var(--text); }

/* detail */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 18px; }
.kv { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; margin: 0; }
.kv dt { color: var(--muted); font-size: 13px; }
.kv dd { margin: 0; font-size: 14px; word-break: break-all; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.adb-status { border-top: 1px solid var(--border); padding-top: 14px; font-size: 14px; }
.adb-status p { margin: 4px 0; }
.share-result { border-top: 1px solid var(--border); margin-top: 16px; padding-top: 14px; }
.share-result p { margin: 10px 0 6px; font-size: 13px; color: var(--muted); }
.copyrow { display: flex; gap: 8px; margin-bottom: 8px; }
.copyrow input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; color: var(--text); font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.hidden { display: none; }
#actionMsg.error { color: var(--danger); }

/* branded share page */
.share-page { display: flex; justify-content: center; padding-top: 48px; }
.share-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: 100%;
  max-width: 460px;
  text-align: center;
}
.share-card h1 { margin: 8px 0 6px; font-size: 26px; }
.share-card .sub { margin: 0 0 26px; font-size: 15px; }
.share-phone { margin: 0; font-size: 13px; letter-spacing: .4px; }
.share-open { width: 100%; padding: 14px 18px; font-size: 16px; margin-bottom: 26px; }
.share-pass { border-top: 1px solid var(--border); padding-top: 18px; text-align: left; }
.share-pass .lbl { margin: 0 0 8px; font-size: 13px; color: var(--muted); }
.share-pass .hint { margin: 8px 0 0; font-size: 12px; }
.share-pass .copyrow { margin-bottom: 0; }
.share-footnote { margin: 24px 0 0; font-size: 12px; line-height: 1.5; }
.secondary-label { font-size: 12px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 30px; }
  .nav { flex-direction: column; align-items: flex-start; }
  .kv { grid-template-columns: 1fr; gap: 2px; }
  .kv dd { margin-bottom: 8px; }
}