:root {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-border: #e1e5ea;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-danger: #dc2626;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

h1 { font-size: 1.7rem; margin: 0 0 16px; }
h2 { font-size: 1.25rem; margin: 24px 0 12px; }
h3 { font-size: 1.05rem; margin: 0; }

.topbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { font-weight: 700; font-size: 1.2rem; color: var(--color-text); }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 18px; flex: 1; }
.nav a { color: var(--color-muted); font-weight: 500; }
.nav a:hover { color: var(--color-text); text-decoration: none; }
.topbar-user { display: flex; align-items: center; gap: 12px; color: var(--color-muted); font-size: 0.9rem; }

.footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  padding: 20px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  overflow-wrap: break-word;
}
.stat-value-money { font-size: 1.4rem; }
.stat-label { display: block; color: var(--color-muted); font-size: 0.85rem; margin-top: 4px; }
.stat-danger .stat-value { color: var(--color-danger); }
.stat-warning .stat-value { color: var(--color-warning); }
.stat-info .stat-value { color: var(--color-primary); }
.stat-success .stat-value { color: var(--color-success); }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.toolbar .actions { display: flex; gap: 8px; flex-wrap: wrap; }

.filter-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.85rem;
}
.chip:hover { text-decoration: none; background: var(--color-bg); }
.chip-active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.table-wrap { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table th, .table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.table th { background: var(--color-bg); font-weight: 600; color: var(--color-muted); }
.th-sort { color: inherit; text-decoration: none; white-space: nowrap; }
.th-sort:hover { color: var(--color-primary); }
.tag-no-cobra {
  display: block;
  margin-top: 2px;
  font-size: 0.7rem;
  color: var(--color-muted);
  white-space: nowrap;
}
.table tr:last-child td { border-bottom: none; }
.table-kv th { width: 220px; color: var(--color-muted); font-weight: 600; }
.empty-row { text-align: center; color: var(--color-muted); padding: 24px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-ok { background: #dcfce7; color: #166534; }
.badge-proximo { background: #fef9c3; color: #854d0e; }
.badge-urgente { background: #ffedd5; color: #9a3412; }
.badge-vencido { background: #fee2e2; color: #991b1b; }
.badge-sin_fecha { background: #f3f4f6; color: #4b5563; }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}
.btn:hover { text-decoration: none; }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: var(--color-surface); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); }
.btn-danger { background: #fff; color: var(--color-danger); border-color: #fca5a5; }
.btn-danger:hover { background: #fef2f2; }
.btn-link { background: none; border: none; color: var(--color-muted); font-weight: 500; padding: 4px 6px; }
.btn-link:hover { color: var(--color-text); }

.inline-form { display: inline-block; margin: 0; }

.form { max-width: 560px; }
.form label { display: block; font-weight: 600; margin: 14px 0 6px; font-size: 0.9rem; }
.form input[type=text], .form input[type=email], .form input[type=password],
.form input[type=number], .form select, .form textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}
.form textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.form-actions { margin-top: 20px; display: flex; gap: 10px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-weight: 500; margin-top: 16px; }
.checkbox-label input { width: auto; }
.hint { color: var(--color-muted); font-size: 0.82rem; margin: 4px 0 0; }
.text-muted { color: var(--color-muted); }

.search-form { display: flex; gap: 8px; margin-bottom: 16px; max-width: 420px; }
.search-form input { flex: 1; padding: 8px 10px; border: 1px solid var(--color-border); border-radius: var(--radius); }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert ul { margin: 0; padding-left: 18px; }

.login-box {
  max-width: 380px;
  margin: 60px auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-box h1 { text-align: center; margin-bottom: 4px; }
.login-box .subtitle { text-align: center; color: var(--color-muted); margin-bottom: 20px; font-size: 0.9rem; }

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .topbar-inner { flex-wrap: wrap; gap: 10px; }
  .nav { order: 3; width: 100%; gap: 14px; }
}