/* style.css - ProstAktiv Natura */
:root {
  --timber: #451a03;
  --amber: #b45309;
  --pine: #15803d;
  --kraft: #fdfbf7;
  --kraft-card: #ffffff;
  --border-timber: #e7e5e4;
  --text-dark: #292524;
  --text-muted: #78716c;
  --font-serif: 'Merriweather', 'Georgia', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow: 0 4px 15px rgba(69, 26, 3, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--kraft);
  color: var(--text-dark);
  line-height: 1.7;
}
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; color: var(--timber); }
a { color: var(--amber); text-decoration: none; transition: all 0.2s ease; }
a:hover { color: var(--timber); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Topbar */
.natura-topbar {
  background: var(--timber);
  color: #fef3c7;
  padding: 8px 0;
  font-size: 0.82rem;
  border-bottom: 2px solid var(--amber);
}
.natura-topbar-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.timber-badge {
  background: var(--pine);
  color: #ffffff;
  padding: 2px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 4px;
}

/* Header */
.natura-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-timber);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}
.natura-header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}
.brand-wrap { display: flex; align-items: center; gap: 12px; }
.brand-icon { font-size: 2rem; color: var(--pine); line-height: 1; }
.brand-title { font-size: 1.45rem; font-weight: 900; color: var(--timber); }
.brand-title span { color: var(--pine); }
.brand-sub { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.natura-nav { display: flex; gap: 20px; }
.natura-nav a {
  color: var(--timber);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 8px 0;
  position: relative;
  white-space: nowrap;
}
.natura-nav a:hover, .natura-nav a.active { color: var(--pine); }
.natura-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--pine);
}

/* Buttons */
.btn-timber {
  display: inline-block;
  background: linear-gradient(135deg, var(--amber), var(--timber));
  color: #ffffff !important;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 1rem;
  box-shadow: 0 4px 15px rgba(180, 83, 9, 0.25);
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}
.btn-timber:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(180, 83, 9, 0.4);
}
.btn-outline-timber {
  display: inline-block;
  background: transparent;
  color: var(--timber) !important;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 8px;
  border: 2px solid var(--timber);
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-outline-timber:hover {
  background: var(--timber);
  color: #ffffff !important;
}

/* Hero Section */
.natura-hero {
  padding: 70px 0;
  background: radial-gradient(circle at center, #fffbeb 0%, var(--kraft) 80%);
  border-bottom: 1px solid var(--border-timber);
}
.natura-hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

/* Machine Vibration Matrix */
.vib-table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-top: 24px;
}
.vib-table th, .vib-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-timber);
}
.vib-table th { background: var(--timber); color: #ffffff; font-size: 0.9rem; }

/* Interactive Vibration App */
.vib-calc-box {
  background: #ffffff;
  border: 2px solid var(--amber);
  border-radius: 16px;
  padding: 35px;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}

/* Certificates */
.cert-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert-box {
  background: #ffffff;
  border: 1px solid var(--border-timber);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all 0.25s ease;
}
.cert-box:hover {
  border-color: var(--amber);
  transform: translateY(-4px);
}
.cert-preview {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: #fdfbf7;
  border-radius: 8px;
  margin-bottom: 14px;
  padding: 6px;
}

/* Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 99999;
  inset: 0;
  background: rgba(41, 37, 36, 0.9);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.lightbox-modal.active { display: flex !important; }
.lightbox-content {
  background: #ffffff;
  border-radius: 14px;
  padding: 26px;
  max-width: 850px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}
.lightbox-content img {
  max-width: 100%;
  max-height: 60vh;
  border-radius: 8px;
  margin-bottom: 16px;
}
.lightbox-close {
  position: absolute;
  top: 14px;
  right: 18px;
  font-size: 32px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
}

/* Packages */
.natura-pack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 35px 0;
}
.natura-pack-card {
  background: #ffffff;
  border: 2px solid var(--border-timber);
  border-radius: 14px;
  padding: 28px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: all 0.25s ease;
}
.natura-pack-card:hover, .natura-pack-card.selected {
  border-color: var(--amber);
  background: #fffbeb;
}
.natura-badge-card {
  position: absolute;
  margin-bottom: 12px; position: static; transform: none;
  left: 50%;
  transform: translateX(-50%);
  background: var(--pine);
  color: #ffffff;
  padding: 4px 14px;
  font-weight: 800;
  font-size: 0.75rem;
  border-radius: 20px;
  text-transform: uppercase;
}

/* Footer */
.natura-footer {
  background: var(--timber);
  color: #e7e5e4;
  padding: 60px 0 25px;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .natura-hero-grid, .cert-grid-3, .natura-pack-grid { grid-template-columns: 1fr; }
  .natura-nav { display: none; }
}