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

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --max-width: 800px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

/* --- Layout --- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

nav {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

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

main {
  padding: 3rem 0;
}

footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* --- Hero --- */

.hero {
  text-align: center;
  padding: 3rem 0;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

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

/* --- Features --- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* --- Content pages (privacy, support) --- */

.content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2.5rem;
}

.content h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.content .updated {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.content h2 {
  font-size: 1.2rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.content p,
.content ul {
  margin-bottom: 1rem;
}

.content ul {
  padding-left: 1.5rem;
}

.content li {
  margin-bottom: 0.35rem;
}

/* --- Contact form --- */

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--color-bg);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  display: none;
}

.form-status.success {
  display: block;
  background: #f0fdf4;
  color: var(--color-success);
  border: 1px solid #bbf7d0;
}

.form-status.error {
  display: block;
  background: #fef2f2;
  color: var(--color-error);
  border: 1px solid #fecaca;
}

/* Honeypot — visually hidden from humans, visible to bots */
.ohnohoney {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

/* --- Responsive --- */

@media (max-width: 600px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .content {
    padding: 1.5rem;
  }

  nav {
    gap: 1rem;
  }
}