/* ── Variables ── */
:root {
  --green-dark:   #1a3a2a;
  --green-mid:    #2d6a4f;
  --green-accent: #40916c;
  --green-light:  #74c69d;
  --green-pale:   #d8f3dc;
  --granite:      #3a3f3b;
  --granite-mid:  #5c635e;
  --granite-light:#a9b0ab;
  --bg-main:      #eef5f0;  /* soft sage — complements green */
  --bg-alt:       #f7f2eb;  /* warm parchment — earthy contrast */
  --white:        #ffffff;
  --shadow:       0 4px 20px rgba(26,58,42,0.15);
  --radius:       10px;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg-main);
  color: var(--granite);
  line-height: 1.7;
}

/* ── Header ── */
header {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--granite) 100%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

.logo a {
  text-decoration: none;
  display: inline-block;
}

.logo h2 {
  color: var(--green-light);
  font-size: 1.6rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: opacity 0.2s;
}

.logo a:hover h2 { opacity: 0.8; }

.logo span {
  color: var(--white);
  font-weight: 300;
}

nav a {
  color: var(--granite-light);
  text-decoration: none;
  margin-left: 30px;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  transition: color 0.3s;
  position: relative;
  padding-bottom: 4px;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--green-light);
  transition: width 0.3s;
}

nav a:hover, nav a.active { color: var(--green-light); }
nav a:hover::after, nav a.active::after { width: 100%; }

/* ── Hero ── */
.hero {
  background: var(--bg-alt);
  color: var(--green-dark);
  text-align: center;
  padding: 120px 20px 100px;
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  line-height: 1.2;
  color: var(--green-dark);
  position: relative;
}

.hero p {
  font-size: 1.2rem;
  margin: 20px auto;
  max-width: 600px;
  color: var(--granite-mid);
  position: relative;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.3s;
  border: none;
  position: relative;
}

.btn-primary {
  background: var(--green-accent);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(64,145,108,0.4);
}

.btn-primary:hover {
  background: var(--green-light);
  color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(64,145,108,0.5);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--green-accent);
  color: var(--green-accent);
}

.btn-outline:hover {
  background: var(--green-accent);
  color: var(--white);
  transform: translateY(-2px);
}

/* ── Sections ── */
section {
  padding: 70px 60px;
}

section:nth-child(odd)  { background: var(--bg-main); }
section:nth-child(even) { background: var(--bg-alt); }

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--green-dark);
  text-align: center;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-subtitle {
  text-align: center;
  color: var(--granite-mid);
  max-width: 600px;
  margin: 0 auto 50px;
  font-size: 1rem;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--green-accent), var(--green-light));
  margin: 12px auto 16px;
  border-radius: 2px;
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.about-text p {
  color: var(--granite-mid);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-box {
  background: linear-gradient(135deg, var(--green-dark), var(--green-mid));
  color: var(--white);
  border-radius: var(--radius);
  padding: 30px 20px;
  text-align: center;
}

.stat-box .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--green-light);
  display: block;
}

.stat-box .label {
  font-size: 0.85rem;
  color: var(--green-pale);
  letter-spacing: 0.5px;
}

/* ── Cards Grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--white);
  border: 1px solid #d4e8dc;
  border-top: 4px solid var(--green-accent);
  border-radius: var(--radius);
  padding: 30px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s, border-top-color 0.3s;
  text-align: center;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(26,58,42,0.2);
  border-top-color: var(--green-light);
}

.card-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: block;
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card p {
  font-size: 0.88rem;
  color: var(--granite-mid);
  line-height: 1.6;
}

/* ── Product Page ── */
.page-hero {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--granite) 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 20px;
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.page-hero p {
  color: var(--green-pale);
  margin-top: 12px;
  font-size: 1.05rem;
}

.product-category {
  max-width: 1200px;
  margin: 0 auto 60px;
}

.category-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--green-dark);
  color: var(--green-light);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  border-left: 5px solid var(--green-accent);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, border-left-color 0.3s;
}

.product-card:hover {
  transform: translateY(-4px);
  border-left-color: var(--green-light);
}

.product-card h3 {
  font-size: 1rem;
  color: var(--green-dark);
  font-weight: 700;
  margin-bottom: 6px;
}

.product-card p {
  font-size: 0.87rem;
  color: var(--granite-mid);
}

/* ── Contact Page ── */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 50px;
  max-width: 1050px;
  margin: 0 auto;
}

.contact-info h3 {
  font-size: 1.3rem;
  color: var(--green-dark);
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
}

.contact-item .ci-icon {
  background: var(--green-mid);
  color: var(--white);
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item .ci-text strong {
  display: block;
  color: var(--green-dark);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-item .ci-text span {
  color: var(--granite-mid);
  font-size: 0.95rem;
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--green-accent);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--green-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid #c8ddd0;
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--granite);
  background: var(--bg-main);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--green-accent);
  box-shadow: 0 0 0 3px rgba(64,145,108,0.15);
  background: var(--white);
  background: var(--bg-alt);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ── Footer ── */
footer {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--granite) 100%);
  color: var(--granite-light);
  text-align: center;
  padding: 40px 20px;
}

footer .footer-brand {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--green-light);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

footer a {
  color: var(--green-light);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer p {
  margin: 6px 0;
  font-size: 0.9rem;
}

.footer-tags {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.footer-tag {
  background: rgba(64,145,108,0.2);
  border: 1px solid rgba(116,198,157,0.3);
  color: var(--green-pale);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  letter-spacing: 0.5px;
}

/* ── Hamburger ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--green-light);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── Responsive: Tablet ── */
@media (max-width: 900px) {
  header { padding: 16px 24px; }
  section { padding: 60px 30px; }
  .about-grid { gap: 30px; }
  .cards-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
  .contact-wrapper { gap: 30px; }
}

/* ── Responsive: Mobile ── */
@media (max-width: 768px) {

  /* Header & Nav */
  header {
    padding: 14px 20px;
    position: relative;
    flex-wrap: wrap;
  }

  .nav-toggle { display: flex; }

  nav {
    display: none;
    width: 100%;
    flex-direction: column;
    background: var(--green-dark);
    margin-top: 12px;
    border-radius: var(--radius);
    overflow: hidden;
  }

  nav.open { display: flex; }

  nav a {
    margin: 0;
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    font-size: 1rem;
  }

  nav a::after { display: none; }

  nav a:last-child { border-bottom: none; }

  /* Hero */
  .hero {
    padding: 70px 20px 60px;
  }

  .hero h1 {
    font-size: 1.7rem;
    letter-spacing: 1px;
  }

  .hero p {
    font-size: 1rem;
    margin: 14px auto;
  }

  .hero .btn {
    display: block;
    width: 100%;
    max-width: 280px;
    margin: 10px auto 0;
    text-align: center;
  }

  /* Page hero */
  .page-hero { padding: 50px 20px; }
  .page-hero h1 { font-size: 1.6rem; letter-spacing: 1px; }

  /* Sections */
  section { padding: 50px 16px; }

  .section-title { font-size: 1.4rem; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-box { padding: 20px 12px; }
  .stat-box .num { font-size: 1.8rem; }

  /* Cards */
  .cards-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .card { padding: 20px 16px; }
  .card-icon { font-size: 2rem; }

  /* Product cards */
  .product-card { padding: 18px 20px; }

  /* Contact */
  .contact-wrapper { grid-template-columns: 1fr; gap: 30px; }
  .contact-form { padding: 24px 18px; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  footer { padding: 30px 16px; }
  footer p { font-size: 0.82rem; }
}

/* ── Responsive: Small Mobile ── */
@media (max-width: 480px) {
  .cards-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 1.4rem; }
  .logo h2 { font-size: 1.3rem; }
}