/* CSS variables */
:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #666666;
  --color-primary: #1a73e8;
  --color-primary-dark: #1557b0;
  --color-accent: #f7f9fc;
  --color-border: #e2e8f0;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1100px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 0;
}

.container.narrow {
  max-width: 760px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo:hover {
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 1.5rem;
}

.site-header nav a {
  color: var(--color-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

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

/* Hero */
.hero {
  background: linear-gradient(135deg, #e0f7fa 0%, #f7f9fc 100%);
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 0 0 1rem;
  line-height: 1.2;
}

.lead {
  font-size: 1.15rem;
  color: var(--color-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  border: 2px solid transparent;
  transition: background 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

/* Sections */
section {
  padding: 3rem 0;
}

section:nth-child(even) {
  background: var(--color-accent);
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.card h3 {
  margin-top: 0;
  font-size: 1.15rem;
}

.about p,
.contact p {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  color: var(--color-muted);
}

/* Policy page */
.policy-page {
  padding: 3rem 0;
}

.policy-page h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.last-updated {
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.policy-page h2 {
  text-align: left;
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.policy-page h3 {
  font-size: 1.05rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.policy-page p {
  margin-bottom: 1rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-accent);
  text-align: center;
  padding: 2rem 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 600px) {
  .site-header .container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .lead {
    font-size: 1rem;
  }
}