:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2a3a52;
  --text: #e8eef7;
  --muted: #8fa3bf;
  --accent: #3d9be9;
  --accent-dim: #2563a8;
  --ok: #3ecf8e;
  --warn: #e8b84a;
  --danger: #f07178;
  --radius: 12px;
  font-family: "Pretendard", "Noto Sans KR", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, #1a3050 0%, transparent 55%),
    radial-gradient(900px 500px at 90% 0%, #1e2836 0%, transparent 50%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.screen { min-height: 100vh; }
.hidden { display: none !important; }

.login-card {
  max-width: 380px;
  margin: 12vh auto;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.eyebrow {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 { margin: 0 0 0.5rem; font-size: 1.75rem; font-weight: 700; }
h2 { margin: 0 0 1rem; font-size: 1.1rem; font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

label {
  display: block;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}
input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d1218;
  color: var(--text);
}
button {
  margin-top: 1.25rem;
  width: 100%;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
button:hover { background: var(--accent-dim); }
button.ghost {
  width: auto;
  margin-top: 0;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.error { color: var(--danger); font-size: 0.9rem; margin-top: 0.75rem; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 1.5rem 2rem 0;
  gap: 1rem;
}
.topbar-actions { display: flex; gap: 0.5rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
  padding: 1.5rem 2rem 2rem;
}
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

@media (max-width: 960px) {
  .span-4, .span-6, .span-8, .span-12 { grid-column: span 12; }
  .topbar { flex-direction: column; align-items: flex-start; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.stack { display: flex; flex-direction: column; gap: 0.5rem; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: #243044;
}
.pill.on { color: var(--ok); }
.pill.off { color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 500; }
.footer { padding: 0 2rem 1.5rem; }

.kto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
}
.kto-block {
  padding: 0.75rem;
  background: #121a24;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.kto-block h3 { margin: 0 0 0.5rem; font-size: 0.95rem; }
.kto-block ul { margin: 0; padding-left: 1.1rem; font-size: 0.82rem; color: var(--muted); }