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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Noto Sans KR', 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: #333;
  background: #F2F5F9;
}

/* ── Header ─────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: #1A5FBF;
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
}
.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 8px;
}
.header-logo img {
  height: 28px;
}
.header-logo-text {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.header-nav {
  margin-left: auto;
  display: flex;
  gap: 2px;
}
.header-nav a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}
.header-nav a:hover { background: rgba(255,255,255,0.15); color: #fff; }
.header-nav a.active { background: rgba(255,255,255,0.18); color: #fff; }

/* ── Layout ─────────────────────────────────────── */
.layout {
  display: flex;
  margin-top: 56px;
  min-height: calc(100vh - 56px);
}

/* ── Sidebar ─────────────────────────────────────── */
.sidebar {
  width: 252px;
  min-width: 252px;
  background: #fff;
  border-right: 1px solid #DDE3EC;
  position: fixed;
  top: 56px;
  bottom: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: #DDD; border-radius: 2px; }

.sidebar-body { flex: 1; padding: 16px 0 8px; }

.sidebar-group-title {
  padding: 6px 18px 4px;
  font-size: 10px;
  font-weight: 700;
  color: #AAB3C0;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.sidebar-nav a {
  display: block;
  padding: 7px 18px;
  color: #506070;
  text-decoration: none;
  font-size: 13px;
  border-left: 3px solid transparent;
  transition: all 0.12s;
}
.sidebar-nav a:hover { background: #F0F6FF; color: #1A5FBF; }
.sidebar-nav a.active { background: #EBF3FB; color: #1A5FBF; font-weight: 600; border-left-color: #1A5FBF; }
.sidebar-nav a.lvl2 { padding-left: 32px; font-size: 12px; color: #6C7E90; }
.sidebar-nav a.lvl2:hover { background: #F0F6FF; color: #1A5FBF; }
.sidebar-nav a.lvl2.active { background: #EBF3FB; color: #1A5FBF; font-weight: 600; border-left-color: #1A5FBF; }

.sidebar-footer {
  padding: 12px 18px;
  border-top: 1px solid #EEF1F5;
  font-size: 11px;
  color: #B0B8C4;
  line-height: 1.8;
}
.sidebar-footer a { color: #B0B8C4; text-decoration: none; }
.sidebar-footer a:hover { color: #1A5FBF; }

/* ── Main content ─────────────────────────────────── */
.main {
  flex: 1;
  margin-left: 252px;
  padding: 28px 36px 60px;
  min-width: 0;
}

/* ── Card (page section) ─────────────────────────── */
.card {
  background: #fff;
  border: 1px solid #DDE3EC;
  border-radius: 8px;
  padding: 28px 30px;
  margin-bottom: 18px;
}

.card h1 {
  font-size: 20px;
  font-weight: 700;
  color: #1A2535;
  padding-bottom: 14px;
  border-bottom: 1px solid #E8EDF4;
  margin-bottom: 16px;
}

.card p { color: #556070; margin-bottom: 10px; line-height: 1.75; }
.card p:last-child { margin-bottom: 0; }

a { color: #1A5FBF; }
a:hover { color: #0D4099; }

/* ── API section (within a card) ─────────────────── */
.api-section + .api-section {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid #E8EDF4;
}

.api-section h2 {
  font-size: 16px;
  font-weight: 700;
  color: #1A2535;
  margin-bottom: 14px;
}

/* sub-section heading */
.sec-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #3A4A5A;
  margin: 20px 0 8px;
}
.sec-title::before {
  content: '';
  display: inline-block;
  width: 3px; height: 13px;
  background: #1A5FBF;
  border-radius: 2px;
}
.sec-title:first-child { margin-top: 0; }

.sub-label {
  font-size: 11px;
  font-weight: 600;
  color: #8898AA;
  margin: 10px 0 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Endpoint box ─────────────────────────────────── */
.endpoint-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #F6F9FC;
  border: 1px solid #DDE3EC;
  border-radius: 6px;
  padding: 10px 14px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
.endpoint-box code {
  font-size: 13px;
  color: #2D3A48;
  background: none;
  border: none;
  padding: 0;
}
.method {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.method.post { background: #2D9CDB; color: #fff; }
.method.get  { background: #27AE60; color: #fff; }

/* ── Tables ───────────────────────────────────────── */
.tbl-wrap { overflow-x: auto; margin-bottom: 4px; }

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
.tbl th {
  background: #F2F6FB;
  color: #3A4A5A;
  font-weight: 600;
  padding: 8px 12px;
  border: 1px solid #D8E0EA;
  text-align: left;
  white-space: nowrap;
}
.tbl td {
  padding: 8px 12px;
  border: 1px solid #E4EAF2;
  color: #4A5A6A;
  vertical-align: middle;
}
.tbl tr:nth-child(even) td { background: #FAFBFD; }
.tbl tr:hover td { background: #F0F6FF; }

.pname {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 12px;
  color: #C0392B;
  font-weight: 600;
}
.req-y {
  display: inline-block;
  padding: 1px 6px;
  background: #FFF0F0;
  color: #D93025;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
}
.req-n {
  display: inline-block;
  padding: 1px 6px;
  background: #F0FFF4;
  color: #1E8449;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
}
.type {
  display: inline-block;
  padding: 1px 6px;
  background: #EEF2FF;
  color: #4F5EA8;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 500;
}

/* ── Code tabs ────────────────────────────────────── */
.code-wrap {
  border: 1px solid #2A2A2A;
  border-radius: 7px;
  overflow: hidden;
}
.code-tabs {
  display: flex;
  background: #252525;
  padding: 0 10px;
}
.code-tab {
  padding: 8px 12px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: #888;
  font-size: 11.5px;
  font-weight: 500;
  cursor: pointer;
  font-family: 'SFMono-Regular', Consolas, monospace;
  transition: color 0.12s;
}
.code-tab:hover { color: #ccc; }
.code-tab.active { color: #fff; border-bottom-color: #4A9EFF; }
.code-pane { display: none; }
.code-pane.active { display: block; }
.code-wrap pre {
  background: #1A1A1A;
  color: #D0D0D0;
  padding: 14px 18px;
  margin: 0;
  overflow-x: auto;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 12px;
  line-height: 1.7;
  tab-size: 4;
}

/* ── JSON response block ─────────────────────────── */
.json-wrap {
  border: 1px solid #2A2A2A;
  border-radius: 7px;
  overflow: hidden;
}
.json-label {
  background: #252525;
  color: #777;
  padding: 5px 14px;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.json-wrap pre {
  background: #1A1A1A;
  color: #D0D0D0;
  padding: 14px 18px;
  margin: 0;
  overflow-x: auto;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 12px;
  line-height: 1.7;
}
.jk { color: #9CDCFE; }
.js { color: #CE9178; }
.jc { color: #6A9955; font-style: italic; }

/* ── Info box ─────────────────────────────────────── */
.info-box {
  background: #EBF3FB;
  border-left: 4px solid #1A5FBF;
  padding: 10px 14px;
  border-radius: 0 5px 5px 0;
  margin-bottom: 14px;
}
.info-box p { color: #1A4F9A; font-size: 13px; margin: 0; }

/* ── Inline code ──────────────────────────────────── */
code {
  background: #F2F5FA;
  color: #C0392B;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 12px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  border: 1px solid #DDE3EC;
}

/* ── Error badge ──────────────────────────────────── */
.err-badge {
  display: inline-block;
  padding: 2px 8px;
  background: #FEE2E2;
  color: #C0392B;
  border-radius: 4px;
  font-weight: 700;
  font-size: 12px;
  font-family: monospace;
}

/* ── Bank grid ────────────────────────────────────── */
.bank-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}
@media (max-width: 700px) {
  .bank-grid { grid-template-columns: 1fr; }
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 860px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px 16px 40px; }
}