:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel-2: #222c38;
  --border: #2c3744;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #3b82f6;
  --accent-hover: #2f6fd6;
  --danger: #ef4444;
  --ok: #22c55e;
  --warn: #f59e0b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.85em; }

/* Layout */
.topbar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 1.5rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; font-size: 1.05rem; color: var(--text); }
.topbar nav { display: flex; gap: 1rem; flex: 1; flex-wrap: wrap; }
.topbar nav a { color: var(--muted); font-size: 0.95rem; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar .logout { margin: 0; }

.container { max-width: 1080px; margin: 0 auto; padding: 1.5rem; }
.foot { text-align: center; color: var(--muted); padding: 2rem 1rem; font-size: 0.85rem; }

h1 { font-size: 1.6rem; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 0.75rem; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.muted { color: var(--muted); }

/* Stats */
.stats { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1rem 0; }
.stat {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.5rem; min-width: 120px; display: flex; flex-direction: column;
}
.stat-num { font-size: 1.8rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: 0.85rem; }

.row-actions { display: flex; gap: 0.75rem; margin: 1rem 0; flex-wrap: wrap; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 0.5rem 0 1rem; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tbody tr:hover { background: var(--panel); }
.hash { cursor: pointer; word-break: break-all; }
.ua { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Chips & statuses */
.chip {
  display: inline-block; padding: 0.1rem 0.5rem; border-radius: 999px;
  background: var(--panel-2); color: var(--muted); font-size: 0.75rem;
}
.status { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.status-active { background: rgba(34,197,94,0.15); color: var(--ok); }
.status-expired { background: rgba(139,152,165,0.15); color: var(--muted); }
.status-revoked { background: rgba(239,68,68,0.15); color: var(--danger); }
.status-used-up { background: rgba(245,158,11,0.15); color: var(--warn); }

/* Cards & forms */
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin: 1rem 0;
}
.form label { display: block; margin-bottom: 1rem; font-size: 0.9rem; }
.form label small { display: block; margin-top: 0.25rem; }
input, select, textarea {
  width: 100%; margin-top: 0.35rem; padding: 0.55rem 0.7rem;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
textarea { resize: vertical; }
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 0.75rem; }

/* Buttons */
.btn {
  display: inline-block; cursor: pointer; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); padding: 0.5rem 0.9rem;
  border-radius: 8px; font-size: 0.9rem; font-weight: 500; text-decoration: none;
  transition: background 0.12s, border-color 0.12s;
}
.btn:hover { background: var(--border); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
form { margin: 0; display: inline; }
.actions { display: flex; gap: 0.4rem; align-items: center; }

/* Alerts */
.alert { padding: 0.7rem 1rem; border-radius: 8px; margin: 1rem 0; font-size: 0.9rem; }
.alert-error { background: rgba(239,68,68,0.12); border: 1px solid var(--danger); color: #fca5a5; }
.alert-ok { background: rgba(34,197,94,0.12); border: 1px solid var(--ok); color: #86efac; }

/* Auth card */
.auth-card {
  max-width: 380px; margin: 8vh auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; text-align: center;
}
.auth-card h1 { margin: 0 0 0.25rem; }
.auth-card form { display: block; text-align: left; margin-top: 1.5rem; }
.auth-card label { display: block; margin-bottom: 1rem; font-size: 0.9rem; }

/* New-link & copy row */
.newlink { border-color: var(--accent); }
.copy-row { display: flex; gap: 0.5rem; margin-top: 0.6rem; }
.url-field { flex: 1; font-family: ui-monospace, monospace; font-size: 0.85rem; }

@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { gap: 0.75rem; }
}