:root {
  --bg: #f7fafc;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #0ea5e9;
  --primary-600: #0284c7;
  --success: #16a34a;
  --danger: #dc2626;
  --card-radius: 16px;
  --shadow: 0 12px 28px rgba(2,6,23,.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  padding: 20px;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--panel);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
  padding: 40px;
}

h1 {
  color: var(--primary);
  font-size: 2.5rem;
  margin-bottom: 10px;
  text-align: center;
}

.subtitle {
  text-align: center;
  color: var(--muted);
  margin-bottom: 40px;
  font-size: 1.1rem;
}

h2 {
  color: var(--text);
  font-size: 1.5rem;
  margin: 30px 0 15px 0;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 5px;
}

h3 {
  color: var(--text);
  font-size: 1.2rem;
  margin: 20px 0 10px 0;
}

p, li {
  margin-bottom: 10px;
  text-align: justify;
}

ul {
  margin-left: 20px;
  margin-bottom: 15px;
}

.highlight {
  background: rgba(14, 165, 233, 0.1);
  padding: 15px;
  border-left: 4px solid var(--primary);
  margin: 20px 0;
  border-radius: 8px;
}

.warning {
  background: rgba(220, 38, 38, 0.1);
  padding: 15px;
  border-left: 4px solid var(--danger);
  margin: 20px 0;
  border-radius: 8px;
}

.success {
  background: rgba(22, 163, 74, 0.1);
  padding: 15px;
  border-left: 4px solid var(--success);
  margin: 20px 0;
  border-radius: 8px;
}

.contact-info {
  background: var(--bg);
  padding: 20px;
  border-radius: 12px;
  margin: 20px 0;
  text-align: center;
}

.email {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.email:hover {
  text-decoration: underline;
}

.footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(2,6,23,.08);
  color: var(--muted);
  font-size: 0.9rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.back-link:hover {
  text-decoration: underline;
}

.date {
  text-align: right;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 30px;
}