:root {
  --bg: #0f1412;
  --bg-elev: #1a221e;
  --bg-soft: #24302a;
  --line: #2f3f37;
  --text: #e8efe9;
  --muted: #8fa399;
  --accent: #2dd4a8;
  --accent-dim: #1a8f72;
  --warn: #e8b84a;
  --danger: #e86a5a;
  --ok: #3dcb8a;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a3d32 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #2a2418 0%, transparent 50%),
    var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.err { color: var(--danger); font-size: 0.9rem; }
.mono { font-family: var(--mono); font-size: 0.85rem; }

.btn {
  font-family: var(--font);
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
}
.btn:hover { border-color: var(--accent-dim); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #06241c;
  border-color: transparent;
}
.btn.ghost { background: transparent; }
.btn.danger { border-color: var(--danger); color: var(--danger); }
.btn.sm { padding: 0.35rem 0.6rem; font-size: 0.85rem; }

.login-gate {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 2rem;
}
.login-card {
  width: min(400px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 2rem;
}
.login-card .brand {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.login-card h1 { margin: 0 0 0.35rem; font-size: 1.75rem; }
.login-card label {
  display: block;
  margin: 1.25rem 0 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.login-card input, .field input, .field select, .field textarea {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
}
.login-card .btn { width: 100%; margin-top: 0.5rem; }

.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100%;
}
.rail {
  background: rgba(15, 20, 18, 0.85);
  border-right: 1px solid var(--line);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
}
.rail-brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.25rem 0.35rem 1rem;
  border-bottom: 1px solid var(--line);
}
.rail-brand .mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent);
  color: #06241c;
  font-weight: 800;
  font-size: 0.8rem;
}
.rail-brand strong { display: block; font-size: 0.95rem; }
.rail-brand small { color: var(--muted); }
.rail nav { display: flex; flex-direction: column; gap: 0.25rem; flex: 1; }
.nav {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
}
.nav:hover { color: var(--text); background: var(--bg-soft); }
.nav.active { color: var(--text); background: var(--bg-soft); box-shadow: inset 3px 0 0 var(--accent); }
.rail-out { margin-top: auto; }

.main { padding: 1.5rem 1.75rem 3rem; min-width: 0; }
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.top h2 { margin: 0; font-size: 1.5rem; font-weight: 650; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.stat {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
}
.stat b { display: block; font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 0.8rem; }
.stat.warn b { color: var(--warn); }
.stat.danger b { color: var(--danger); }
.stat.ok b { color: var(--ok); }

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}
.panel h3 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
}
.row-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 500; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; }
tr:hover td { background: rgba(45, 212, 168, 0.04); }

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge.active { background: rgba(61, 203, 138, 0.15); color: var(--ok); }
.badge.grace { background: rgba(232, 184, 74, 0.15); color: var(--warn); }
.badge.expired, .badge.revoked { background: rgba(232, 106, 90, 0.15); color: var(--danger); }
.badge.unused { background: rgba(143, 163, 153, 0.15); color: var(--muted); }
.badge.used { background: rgba(45, 212, 168, 0.12); color: var(--accent); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}
.field textarea { min-height: 72px; resize: vertical; }
.field.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
}
.field.check input { width: auto; margin: 0; }

.result-box {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px dashed var(--accent-dim);
  background: rgba(45, 212, 168, 0.06);
}
.result-box code {
  font-family: var(--mono);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.toast {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--bg-soft);
  border: 1px solid var(--accent-dim);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 10px;
  z-index: 50;
  max-width: 360px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(6, 12, 10, 0.72);
  backdrop-filter: blur(4px);
}
.modal-card {
  width: min(400px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.35rem 1.4rem;
}
.modal-card h3 { margin: 0 0 0.35rem; }
.modal-card .field { display: block; margin-top: 1rem; }
.modal-card .field input {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
}
.modal-card .field input.mono {
  font-family: var(--mono);
  font-size: 0.9rem;
}
.modal-card .field select {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
}

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .rail { height: auto; position: static; }
  .rail nav { flex-direction: row; flex-wrap: wrap; }
  .form-grid { grid-template-columns: 1fr; }
}