/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #f8f8f6;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-muted: #5a5a5a;
  --color-primary: #4a6741;
  --color-primary-dark: #3a5333;
  --color-border: #e0ddd8;
  --color-accent-bg: #eef2eb;
  --font-body: "Segoe UI", system-ui, -apple-system, sans-serif;
  --max-width: 960px;
  --radius: 6px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* === Layout === */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.site-logo span {
  color: var(--color-primary);
}

/* Navigation */
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}

.main-nav a {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--color-accent-bg);
  color: var(--color-primary-dark);
  text-decoration: none;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* === Hero === */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

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

.section--alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.section h3 {
  font-size: 1.2rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-text);
}

.section p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

.section ul,
.section ol {
  margin: 0 0 1rem 1.5rem;
  color: var(--color-text-muted);
}

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

/* === Page Header (subpages) === */
.page-header {
  padding: 3rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* === Cards Grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0;
}

.card a {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
}

/* === Table === */
.table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-accent-bg);
  font-weight: 600;
  color: var(--color-text);
}

td {
  color: var(--color-text-muted);
}

/* === Comparison boxes === */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

.compare-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.compare-box h3 {
  margin: 0 0 0.75rem;
  color: var(--color-primary-dark);
}

.compare-box ul {
  margin: 0 0 0 1.25rem;
}

/* === Info box === */
.info-box {
  background: var(--color-accent-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* === Contact Form === */
.contact-form {
  max-width: 540px;
  margin: 2rem 0;
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.btn {
  display: inline-block;
  padding: 0.7rem 1.75rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

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

/* === Footer === */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 3rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-nav {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1rem;
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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

/* === Responsive === */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 5%;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .main-nav a {
    padding: 0.6rem 0.5rem;
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    position: relative;
  }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .section {
    padding: 2rem 0;
  }

  .page-header {
    padding: 2rem 0 1rem;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }
}