/* =================================================================
   KINVEXCO · Shared stylesheet
   Design system for all pages
   ================================================================= */

:root {
  --navy: #1B2A4E;
  --navy-deep: #131F3D;
  --navy-soft: #2C4470;
  --forest: #2C5F2D;
  --moss: #97BC62;
  --cream: #F8F6F0;
  --cream-warm: #F2EEE2;
  --cream-deep: #EDE8D8;
  --charcoal: #2A2A2A;
  --gray: #6B7280;
  --gray-light: #D1D5DB;
  --gray-lighter: #E5E0D0;
  --white: #FFFFFF;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--charcoal);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle grain texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.1 0 0 0 0 0.1 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 100;
  opacity: 0.5;
}

/* =================================================================
   TYPOGRAPHY
   ================================================================= */

h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  color: var(--navy);
  letter-spacing: -0.015em;
  font-weight: 400;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
}

h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--forest);
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--charcoal);
}

p.lede {
  font-size: 1.125rem;
  color: var(--charcoal);
  max-width: 36rem;
  line-height: 1.7;
}

.eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--forest);
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.eyebrow.muted {
  color: var(--gray);
  font-weight: 500;
  letter-spacing: 0.18em;
}

a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  border-color: var(--navy);
}

/* =================================================================
   LAYOUT & CONTAINERS
   ================================================================= */

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 4rem;
  position: relative;
  z-index: 2;
}

section {
  padding: 5rem 0;
  position: relative;
  z-index: 2;
}

section.tight {
  padding: 3.5rem 0;
}

section.dark {
  background: var(--navy-deep);
  color: var(--cream);
}

section.dark h1, section.dark h2, section.dark h3 {
  color: var(--cream);
}

section.dark h1 em {
  color: var(--moss);
}

section.dark p {
  color: var(--gray-light);
}

section.dark .eyebrow {
  color: var(--moss);
}

section.cream-deep {
  background: var(--cream-deep);
}

/* =================================================================
   HEADER & NAVIGATION
   ================================================================= */

.site-header {
  padding: 1.75rem 0;
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--gray-lighter);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.site-logo {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
  border-bottom: none;
  line-height: 1;
}

.site-logo-mark {
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--navy);
  letter-spacing: 0.42em;
  /* Account for letter-spacing pushing baseline */
  padding-right: 0;
}

.site-logo-accent {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--forest);
  margin-top: 7px;
  /* Center the accent under the wordmark */
  margin-left: 50%;
  transform: translateX(-50%);
}

.site-logo:hover .site-logo-mark {
  color: var(--navy);
}

.site-nav {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--charcoal);
  letter-spacing: 0.02em;
  border-bottom: none;
  transition: color 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--forest);
}

/* =================================================================
   HERO
   ================================================================= */

.hero {
  padding: 5rem 0 6rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 5rem;
  align-items: center;
}

.hero-content {
  max-width: 48rem;
}

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 380px;
  margin-left: auto;
  width: 100%;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual {
    max-width: 320px;
    margin: 0;
  }
}

.hero-meta {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--gray-lighter);
}

.hero-meta-item {
  margin-right: 2rem;
}

.hero-meta-item:last-child {
  margin-right: 0;
}

.hero-meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gray);
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.hero-meta-value {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--navy);
}

/* =================================================================
   GRID LAYOUTS
   ================================================================= */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* =================================================================
   CARDS & PANELS
   ================================================================= */

.card {
  background: var(--white);
  padding: 2rem;
  border: 1px solid var(--gray-lighter);
  border-radius: 4px;
  position: relative;
}

.card.cream {
  background: var(--cream-warm);
  border: none;
}

.card.cream-deep {
  background: var(--cream-deep);
  border: none;
}

.card.accent-left {
  border-left: 3px solid var(--forest);
  padding-left: 1.75rem;
}

.card-eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--forest);
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  font-size: 0.95rem;
  color: var(--charcoal);
}

/* =================================================================
   STAT BLOCKS
   ================================================================= */

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 2.5rem 0;
}

.stat {
  background: var(--navy-deep);
  color: var(--white);
  padding: 2rem 1.75rem;
  border-radius: 4px;
}

.stat-num {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 2.25rem;
  font-weight: 500;
  color: var(--moss);
  line-height: 1.05;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--cream);
  margin-bottom: 0.65rem;
  font-weight: 500;
}

.stat-detail {
  font-size: 0.78rem;
  color: var(--gray-light);
  line-height: 1.5;
}

/* =================================================================
   COMPARISON TABLE / SPEC LIST
   ================================================================= */

.spec-list {
  border-top: 1px solid var(--gray-lighter);
  margin-top: 1.5rem;
}

.spec-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 1rem 0;
  border-bottom: 1px solid var(--gray-lighter);
  gap: 2rem;
}

.spec-label {
  font-size: 0.85rem;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.spec-value {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1rem;
  font-weight: 500;
  color: var(--navy);
}

/* =================================================================
   BUTTONS
   ================================================================= */

.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--navy);
  border-radius: 2px;
  background: var(--navy);
  color: var(--white);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn:hover {
  background: var(--navy-deep);
  color: var(--white);
  border-color: var(--navy-deep);
}

.btn.outline {
  background: transparent;
  color: var(--navy);
}

.btn.outline:hover {
  background: var(--navy);
  color: var(--white);
}

.btn.light {
  background: transparent;
  color: var(--cream);
  border-color: var(--moss);
}

.btn.light:hover {
  background: var(--moss);
  color: var(--navy-deep);
  border-color: var(--moss);
}

/* =================================================================
   FOOTER
   ================================================================= */

.site-footer {
  background: var(--navy-deep);
  color: var(--cream);
  padding: 4rem 0 2rem;
  margin-top: 0;
  position: relative;
  z-index: 2;
}

.site-footer h4 {
  color: var(--cream);
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--moss);
  margin-bottom: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-grid p, .footer-grid a {
  color: var(--gray-light);
  font-size: 0.9rem;
}

.footer-grid a {
  display: block;
  margin-bottom: 0.5rem;
  border-bottom: none;
}

.footer-grid a:hover {
  color: var(--moss);
  border-bottom: none;
}

.footer-wordmark {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.32em;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-family: 'Fraunces', Georgia, serif;
  font-style: italic;
  font-size: 0.95rem;
  color: var(--cream);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--navy-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--gray);
  letter-spacing: 0.04em;
}

/* =================================================================
   PAGE HEADER (sub-pages)
   ================================================================= */

.page-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--gray-lighter);
}

.page-header .eyebrow {
  margin-bottom: 1.25rem;
}

.page-header h1 {
  font-size: clamp(2.25rem, 4.2vw, 3.25rem);
  margin-bottom: 1.25rem;
}

.page-header p {
  font-size: 1.125rem;
  color: var(--gray);
  max-width: 38rem;
  line-height: 1.6;
}

/* =================================================================
   SUSTAINABILITY COMPARISON BARS
   ================================================================= */

.compare-bar {
  margin-bottom: 1.5rem;
}

.compare-bar-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.compare-bar-name {
  color: var(--charcoal);
  font-weight: 500;
}

.compare-bar-value {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  color: var(--navy);
}

.compare-bar-track {
  height: 8px;
  background: var(--cream-deep);
  border-radius: 2px;
  overflow: hidden;
}

.compare-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--forest);
}

.compare-bar.highlight .compare-bar-fill {
  background: var(--moss);
}

.compare-bar.highlight .compare-bar-name {
  color: var(--forest);
  font-weight: 600;
}

/* =================================================================
   RESPONSIVE
   ================================================================= */

@media (max-width: 1024px) {
  .container { padding: 0 2.5rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  section { padding: 3.5rem 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 1.5rem; }
  .stats { grid-template-columns: 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .site-nav { gap: 1.5rem; }
  .site-nav a { font-size: 0.82rem; }
}

@media (max-width: 560px) {
  .container { padding: 0 1.5rem; }
  .site-header .container { flex-direction: column; gap: 1rem; }
  .site-nav { flex-wrap: wrap; justify-content: center; gap: 1.25rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; }
  .hero-meta { gap: 1.5rem; }
  .spec-row { grid-template-columns: 1fr; gap: 0.25rem; }
}