/* =====================================================
   Earthy Theme — Mobile-First Design System
   Colors: #2d4a3e forest green | #c9a227 amber
   Breakpoints: 768px (tablet) | 1024px (desktop)
   ===================================================== */

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

:root {
  --green: #2d4a3e;
  --green-light: #3d5e50;
  --amber: #c9a227;
  --amber-hover: #b38a1f;
  --amber-light: #e0b83e;
  --bg: var(--green);
  --bg-card: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.1);
  --text: #f5f0e8;
  --text-muted: #b8ae98;
  --text-dim: #8a7f6a;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ---- Container ---- */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- Navigation (mobile first) ---- */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(45, 74, 62, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-card);
}

nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--amber);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  list-style: none;
  display: none;
  position: absolute;
  top: 56px;
  left: 0;
  width: 100%;
  flex-direction: column;
  background: rgba(45, 74, 62, 0.97);
  backdrop-filter: blur(12px);
  padding: 12px 16px;
  gap: 12px;
  border-bottom: 1px solid var(--border-card);
}

.nav-links.open {
  display: flex;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 0;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--amber);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

/* ---- Page Header (mobile first) ---- */
.page-header {
  padding-top: 88px;
  padding-bottom: 40px;
  text-align: center;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--amber);
}

.page-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 10px;
  max-width: 480px;
}

/* ---- Sections (mobile first) ---- */
.section {
  padding: 40px 0;
}

.section-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--amber);
  margin-bottom: 24px;
}

/* ---- Card Base ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  backdrop-filter: blur(6px);
  transition: transform 0.25s, border-color 0.25s;
}

.card:hover {
  border-color: var(--amber);
}

/* ---- Button ---- */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 999px;
  background: var(--amber);
  color: #1a1a1a;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}

.btn:hover {
  background: var(--amber-hover);
  transform: translateY(-2px);
}

/* ---- Footer (mobile first) ---- */
footer {
  text-align: center;
  padding: 24px 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-card);
}

/* =====================================================
   Tablet: 768px+
   ===================================================== */
@media (min-width: 768px) {
  .container {
    padding: 0 24px;
  }

  nav .container {
    height: 64px;
  }

  .logo {
    font-size: 1.25rem;
  }

  .nav-links {
    display: flex;
    position: static;
    flex-direction: row;
    background: none;
    backdrop-filter: none;
    padding: 0;
    gap: 28px;
    border-bottom: none;
    width: auto;
  }

  .nav-links a {
    font-size: 0.95rem;
    padding: 0;
  }

  .hamburger {
    display: none;
  }

  .page-header {
    padding-top: 108px;
    padding-bottom: 50px;
  }

  .page-header h1 {
    font-size: 2.5rem;
  }

  .page-header p {
    font-size: 1.05rem;
    margin-top: 12px;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.6rem;
    margin-bottom: 28px;
  }

  footer {
    padding: 28px 0;
    font-size: 0.85rem;
  }
}

/* =====================================================
   Desktop: 1024px+
   ===================================================== */
@media (min-width: 1024px) {
  .container {
    padding: 0 32px;
  }

  .nav-links {
    gap: 36px;
  }

  .page-header {
    padding-top: 120px;
    padding-bottom: 60px;
  }

  .page-header h1 {
    font-size: 3rem;
  }

  .page-header p {
    font-size: 1.1rem;
    max-width: 560px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.75rem;
    margin-bottom: 32px;
  }

  footer {
    padding: 32px 0;
    font-size: 0.875rem;
  }
}