* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f6f8;
  color: #1a1a2e;
  margin: 0;
}
.container { max-width: 960px; margin: 0 auto; padding: 24px 16px; }
.auth-box {
  max-width: 380px;
  margin: 80px auto;
  background: #fff;
  padding: 32px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
.auth-box h1 { font-size: 1.3rem; margin-top: 0; }
label { display: block; font-size: 0.85rem; margin: 12px 0 4px; color: #555; }
input[type=email], input[type=password], input[type=text] {
  width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem;
}
button, .btn {
  background: #2d5cf6; color: #fff; border: none; padding: 10px 18px;
  border-radius: 4px; font-size: 0.95rem; cursor: pointer; text-decoration: none;
  display: inline-block; margin-top: 14px;
}
button:disabled { background: #aaa; cursor: not-allowed; }
.btn-secondary { background: #6b7280; }
.error { background: #fde2e2; color: #a11; padding: 10px; border-radius: 4px; margin-bottom: 8px; font-size: 0.9rem; }
.notice { background: #e6f4ea; color: #1a7431; padding: 10px; border-radius: 4px; margin-bottom: 16px; font-size: 0.9rem; }
nav { background: #1a1a2e; padding: 12px 24px; display: flex; justify-content: space-between; align-items: center; }
nav a { color: #fff; text-decoration: none; margin-right: 16px; font-size: 0.9rem; }
nav a.brand { font-weight: 600; font-size: 1rem; }
nav form { display: inline; margin: 0; }
nav button { background: transparent; border: 1px solid #666; padding: 4px 10px; margin: 0; font-size: 0.85rem; }
.cards { display: flex; gap: 16px; flex-wrap: wrap; margin: 24px 0; }
.card {
  background: #fff; border-radius: 8px; padding: 20px; flex: 1; min-width: 160px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.card .num { font-size: 2rem; font-weight: 700; }
.card .label { font-size: 0.85rem; color: #666; margin-top: 4px; }
.card.alert .num { color: #c0392b; }
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid #eee; font-size: 0.9rem; }
th { background: #fafafa; font-weight: 600; color: #444; }
tr:hover td { background: #f9fafc; }
a.row-link { color: #2d5cf6; text-decoration: none; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 0.78rem; font-weight: 600; }
.badge.firmado { background: #e6f4ea; color: #1a7431; }
.badge.pendiente { background: #fff3cd; color: #8a6500; }
.detalle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 24px; background: #fff; padding: 20px; border-radius: 8px; margin-bottom: 24px; }
.detalle-grid div span.k { display: block; font-size: 0.78rem; color: #888; }
.detalle-grid div span.v { font-size: 0.95rem; }
h2 { font-size: 1.1rem; margin: 24px 0 12px; }