:root {
  --bg: #f7f9fc;
  --text: #1f2937;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --surface: #ffffff;
  --muted: #6b7280;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

.site-header {
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
  color: #fff;
  padding: 5rem 0;
  text-align: center;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.subtitle {
  margin: 0 0 1.5rem;
  color: #dbeafe;
}

.button {
  display: inline-block;
  text-decoration: none;
  background: #fff;
  color: var(--primary-dark);
  padding: 0.7rem 1.2rem;
  border-radius: 0.5rem;
  font-weight: bold;
}

.button:hover {
  background: #eff6ff;
}

.button.button-primary {
  border: 0;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
}

.button.button-primary:hover {
  background: var(--primary-dark);
}

.section {
  padding: 3rem 0;
}

.section.alt {
  background: var(--surface);
}

h2 {
  margin-top: 0;
  font-size: 1.7rem;
}

p {
  margin-bottom: 0;
  max-width: 70ch;
}

.contact-form {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  padding: 1rem;
}

.form-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  padding: 0.7rem 0.8rem;
  font: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: 2px solid #bfdbfe;
  outline-offset: 1px;
  border-color: #93c5fd;
}

.site-footer {
  background: #111827;
  color: #d1d5db;
  text-align: center;
  padding: 1.2rem 0;
}

.message {
  border-radius: 0.75rem;
  padding: 1rem;
  margin: 1rem 0 1.5rem;
}

.message.success {
  background: #ecfdf5;
  border: 1px solid #10b981;
}

.message.error {
  background: #fef2f2;
  border: 1px solid #ef4444;
}

.message p {
  margin: 0 0 0.5rem;
}

.message ul {
  margin: 0;
  padding-left: 1.25rem;
}

@media (max-width: 700px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}