:root {
  --bg: linear-gradient(140deg, #f1f5f9 0%, #dbeafe 42%, #ccfbf1 100%);
  --card: rgba(255, 255, 255, 0.96);
  --ink: #0f172a;
  --muted: #475569;
  --line: #cbd5e1;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --warn-bg: #fff7ed;
  --warn-line: #fdba74;
  --warn-ink: #9a3412;
}

* { box-sizing: border-box; }

body.panel-page {
  margin: 0;
  min-height: 100vh;
  padding: 24px;
  font-family: Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

body.panel-page h1,
body.panel-page h2,
body.panel-page h3 {
  margin: 0 0 12px;
}

body.panel-page p {
  margin: 0 0 12px;
  color: var(--muted);
}

body.panel-page .alert,
body.panel-page .mensaje {
  margin: 0 0 14px;
  border: 1px solid var(--warn-line);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--warn-bg);
  color: var(--warn-ink);
}

body.panel-page form {
  display: grid;
  gap: 10px;
  margin: 14px 0;
  max-width: 520px;
}

body.panel-page input,
body.panel-page select,
body.panel-page textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 15px;
  background: #fff;
}

body.panel-page button {
  width: fit-content;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

body.panel-page button:hover {
  background: var(--brand-dark);
}

body.panel-page a {
  color: #0b3a88;
  text-decoration: none;
  font-weight: 700;
}

body.panel-page a:hover { text-decoration: underline; }

body.panel-page section,
body.panel-page .card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  max-width: 980px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}