:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e3e5ea;
  --primary: #2d4a8a;
  --success: #1a7f4e;
  --success-bg: #e6f4ec;
  --danger: #b3261e;
  --danger-bg: #fbe9e7;
  --warn: #a15c00;
  --warn-bg: #fdf1de;
}

* { box-sizing: border-box; }

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

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar .brand { font-weight: 700; color: var(--primary); }

.nav a {
  margin-left: 18px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.nav a:hover { color: var(--primary); }

.container {
  max-width: 1000px;
  margin: 24px auto;
  padding: 0 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 0 0 12px; }

.totales {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.total-card {
  border-radius: 10px;
  padding: 18px;
  border: 1px solid var(--border);
}

.total-card .label { font-size: 13px; color: var(--muted); }
.total-card .valor { font-size: 26px; font-weight: 700; margin-top: 4px; }

.total-card.pendiente { background: var(--warn-bg); }
.total-card.pendiente .valor { color: var(--warn); }
.total-card.pagado { background: var(--success-bg); }
.total-card.pagado .valor { color: var(--success); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.pendiente { background: var(--warn-bg); color: var(--warn); }
.badge.pagado { background: var(--success-bg); color: var(--success); }
.badge.cancelado { background: var(--danger-bg); color: var(--danger); }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.btn.secondary { background: transparent; color: var(--primary); }
.btn.small { padding: 4px 10px; font-size: 13px; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
.form-errors { color: var(--danger); font-size: 12px; margin-top: 4px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.flash.success { background: var(--success-bg); color: var(--success); }
.flash.error { background: var(--danger-bg); color: var(--danger); }

.muted { color: var(--muted); font-size: 13px; }
.empty { color: var(--muted); font-size: 14px; padding: 12px 0; }

.filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filters select { padding: 6px 8px; border-radius: 6px; border: 1px solid var(--border); }

@media (max-width: 640px) {
  .totales { grid-template-columns: 1fr; }
}

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.auth-card h1 { text-align: center; font-size: 20px; }
.auth-card .brand { text-align: center; color: var(--primary); font-weight: 700; margin-bottom: 4px; }
.auth-card .subtitle { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 20px; }
.auth-card .btn { width: 100%; text-align: center; }
.auth-card .resend { text-align: center; margin-top: 14px; }
.auth-card .resend button {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
}