:root {
  --color-canvas: #eeefe9;
  --color-surface-card: #ffffff;
  --color-surface-soft: #e5e7e0;
  --color-surface-doc: #fcfcfa;
  --color-ink: #23251d;
  --color-body: #4d4f46;
  --color-mute: #5b5d53;
  --color-ash: #75776c;
  --color-hairline: #bfc1b7;
  --color-hairline-soft: #dcdfd2;
  --color-primary: #f7a501;
  --color-primary-pressed: #dd9001;
  --color-on-primary: #23251d;
  --color-on-dark: #ffffff;
  --color-link-teal: #0c6285;
  --color-accent-blue: #2c84e0;
  --color-accent-blue-soft: #dceaf6;
  --color-accent-red: #cd4239;
  --color-accent-red-soft: #f7d6d3;
  --color-accent-green: #2c8c66;
  --color-accent-green-soft: #d9eddf;
  --color-accent-purple: #7c44a6;
  --color-accent-purple-soft: #e7d8ee;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-full: 9999px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "IBM Plex Sans KR", "IBM Plex Sans", -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif;
  background: var(--color-canvas);
  color: var(--color-body);
  font-size: 17px;
  line-height: 1.7;
  /* Korean breaks anywhere by default, so a line can end mid-word ("방향으 / 로").
     keep-all wraps at 어절 boundaries instead; break-word is the escape hatch for a
     single run too long to fit, such as a URL. */
  word-break: keep-all;
  overflow-wrap: break-word;
}

a { color: var(--color-link-teal); }

/* Buttons: bare <button> and .btn (for anchor tags styled as buttons) share the same default look */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  min-height: 46px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: none;
  text-decoration: none;
  background: var(--color-primary);
  color: var(--color-on-primary);
}
button:hover, .btn:hover { background: var(--color-primary-pressed); }
button.danger, .btn-danger { background: var(--color-accent-red); color: var(--color-on-dark); }
button.danger:hover, .btn-danger:hover { background: #a83527; }
.btn-secondary { background: var(--color-surface-soft); color: var(--color-ink); }
.btn-secondary:hover { background: var(--color-hairline-soft); }

/* Callout banners */
.banner {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  margin: 20px 0;
  font-size: 17px;
  line-height: 1.7;
}
.banner-blue { background: var(--color-accent-blue-soft); color: var(--color-ink); }
.banner-green { background: var(--color-accent-green-soft); color: var(--color-accent-green); font-weight: 600; }
.banner-red { background: var(--color-accent-red-soft); color: var(--color-accent-red); font-weight: 600; }
.banner-purple { background: var(--color-accent-purple-soft); color: var(--color-ink); }

/* Data / content tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface-card);
  margin: 16px 0;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 16px;
}
.data-table th, .data-table td {
  border-bottom: 1px solid var(--color-hairline-soft);
  padding: 12px 14px;
  text-align: left;
  line-height: 1.6;
  color: var(--color-body);
}
.data-table th {
  background: var(--color-surface-soft);
  color: var(--color-ink);
  font-weight: 700;
  font-size: 16px;
}
.data-table tr:last-child td { border-bottom: none; }

/* Safety net: if a table (or anything else) is wider than its container on a
   narrow screen, it scrolls inside this box instead of overflowing the page. */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 16px 0;
}
.table-scroll .data-table { margin: 0; }

/* Inline code */
code {
  background: var(--color-surface-soft);
  color: var(--color-ink);
  font-family: ui-monospace, "Source Code Pro", monospace;
  font-size: 0.95em;
  padding: 3px 7px;
  border-radius: var(--radius-xs);
}

.hint { color: var(--color-mute); font-size: 16px; }

/* Pill tabs: shared by the voucher-settlement app, the doc viewer, and the hub page */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
/* Tabs carry a visible chip outline even when inactive: as bare text they read as
   a heading, not as something you can tap. */
.tab-btn {
  background: var(--color-surface-card);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-full);
  height: auto;
  min-height: 44px;
  padding: 10px 18px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.tab-btn:hover { background: var(--color-surface-soft); }
.tab-btn.active { background: var(--color-ink); color: var(--color-on-dark); border-color: var(--color-ink); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }