/* ============================================
   CEYLON COCO CARB — Design System
   ceyloncococarb.lk
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Jost:wght@300;400;500;600&display=swap');

/* --- CSS Variables --- */
:root {
  --green:        #4a7c3f;
  --green-dark:   #2f5228;
  --green-light:  #7ab648;
  --charcoal:     #1c1c1c;
  --charcoal-mid: #2e2e2e;
  --cream:        #f8f5ef;
  --cream-dark:   #ede9e0;
  --text:         #2c2c2c;
  --text-muted:   #6b6b6b;
  --white:        #ffffff;
  --border:       #d8d3c8;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Jost', sans-serif;

  --max-width: 1140px;
  --radius:    4px;
  --shadow:    0 2px 16px rgba(0,0,0,0.08);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   HEADER
   ============================================ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--charcoal);
  border-bottom: 3px solid var(--green);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-mark {
  width: 44px;
  height: 44px;
  background: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -1px;
  flex-shrink: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text .brand {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.5px;
}
.logo-text .tagline {
  font-size: 10px;
  font-weight: 400;
  color: var(--green-light);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.site-nav a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  transition: color 0.2s;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--white);
  border-bottom-color: var(--green-light);
}
.nav-cta {
  background: var(--green) !important;
  color: var(--white) !important;
  padding: 8px 20px !important;
  border-radius: var(--radius) !important;
  border-bottom: none !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--green-dark) !important; }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

/* ============================================
   FOOTER
   ============================================ */
#site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo-mark { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--green-light); }

.footer-contact p {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
}
.footer-contact a { color: var(--green-light); }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

/* ============================================
   PAGE HERO
   ============================================ */
.page-hero {
  background: var(--green-dark);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero .container { position: relative; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
}
.page-hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  margin-top: 16px;
  max-width: 560px;
}
.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.breadcrumb a { color: var(--green-light); }
.breadcrumb span { margin: 0 8px; }

/* ============================================
   SECTIONS
   ============================================ */
.section { padding: 80px 0; }
.section-alt { background: var(--cream); }
.section-dark { background: var(--charcoal); color: var(--white); }

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}
.section-dark .section-label { color: var(--green-light); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--charcoal);
  margin-bottom: 20px;
}
.section-dark .section-title { color: var(--white); }

.section-intro {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.8;
}
.section-dark .section-intro { color: rgba(255,255,255,0.65); }

/* Two column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }

/* ============================================
   COMPONENTS
   ============================================ */

/* Stat Cards */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 48px;
}
.stat-card {
  background: var(--white);
  padding: 32px 24px;
  text-align: center;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0.5px;
}

/* Feature list */
.feature-list { margin-top: 24px; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  min-width: 22px;
  background: var(--green);
  color: var(--white);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  margin-top: 1px;
}

/* Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  font-size: 14px;
}
.spec-table th {
  background: var(--charcoal);
  color: var(--white);
  padding: 12px 16px;
  text-align: left;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.spec-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.spec-table tr:nth-child(even) td { background: var(--cream); }
.spec-table td:last-child { font-weight: 600; color: var(--green-dark); }

/* Cards grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.card-icon {
  width: 48px;
  height: 48px;
  background: var(--cream-dark);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
}
.card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 10px;
}
.card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* Divider */
.divider {
  width: 48px;
  height: 3px;
  background: var(--green);
  margin: 20px 0;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}
.btn-primary:hover { background: var(--green-dark); border-color: var(--green-dark); }
.btn-outline {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn-outline:hover { background: var(--green); color: var(--white); }
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-white:hover { background: var(--white); color: var(--charcoal); }

/* Image frame */
.img-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}
.img-frame img {
  width: 100%;
  height: 377px;
  object-fit: cover;
}
.img-frame::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .two-col.reverse { direction: ltr; }
  .cards-grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .site-nav { display: none; }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--charcoal-mid);
    padding: 24px;
    gap: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .menu-toggle { display: flex; }
  .cards-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  #site-header { position: relative; }
}