:root {
  --primary: #1a56db;
  --primary-dark: #1240a8;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --ok: #059669;
  --error: #dc2626;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
h1 { font-size: 1.4rem; }
h2 { font-size: 1.1rem; }

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #111827;
  color: #fff;
  padding: 0 1rem;
  flex-wrap: wrap;
}
.topbar .brand { font-weight: 700; padding: 0.8rem 0; }
.topbar nav { display: flex; flex-wrap: wrap; }
.topbar nav a {
  color: #d1d5db;
  padding: 0.8rem 0.7rem;
  display: inline-block;
}
.topbar nav a.active, .topbar nav a:hover { color: #fff; background: #1f2937; }
.userbox { margin-left: auto; font-size: 0.85rem; color: #d1d5db; }
.userbox a { color: #93c5fd; }

.container { max-width: 1100px; margin: 0 auto; padding: 1rem; }

/* Cards & tables */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.92rem; }
th { background: #f9fafb; font-weight: 600; }
tr:hover td { background: #f9fafb; }

/* Forms */
label { display: block; margin-bottom: 0.7rem; font-size: 0.9rem; font-weight: 500; }
input, select, textarea {
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.25rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.95rem;
}
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.85rem; }
.btn-danger { background: var(--error); }
.btn-secondary { background: #6b7280; }

/* Alerts & badges */
.alert { padding: 0.7rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-ok { background: #d1fae5; color: #065f46; }
.alert-error { background: #fee2e2; color: #991b1b; }
.badge { padding: 0.15rem 0.55rem; border-radius: 99px; font-size: 0.78rem; font-weight: 600; }
.badge-ok { background: #d1fae5; color: #065f46; }
.badge-error { background: #fee2e2; color: #991b1b; }
.badge-warn { background: #fef3c7; color: #92400e; }

/* Dashboard stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; }
.stat .num { font-size: 1.8rem; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 0.85rem; }

/* Auth pages */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.auth-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 2rem; width: 100%; max-width: 380px; }
.auth-card h1 { margin-top: 0; }

/* Scanner */
#reader { max-width: 420px; margin: 0 auto; }
.scan-result { text-align: center; padding: 1.5rem; border-radius: 10px; margin-top: 1rem; font-size: 1.2rem; }
.scan-ok { background: #d1fae5; color: #065f46; }
.scan-error { background: #fee2e2; color: #991b1b; }
.scan-result .big { font-size: 2rem; font-weight: 800; }

/* Carnet */
.carnet { max-width: 380px; margin: 2rem auto; text-align: center; }
.carnet #qrcode { display: flex; justify-content: center; margin: 1rem 0; }

.toolbar { display: flex; gap: 0.6rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.toolbar form { display: flex; gap: 0.6rem; flex: 1; }
.toolbar input[type=text] { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 700px) { .grid-2 { grid-template-columns: 1fr; } }