/* ============================================================
   CHENNOL — Shared Design System
   Palette: warm parchment, forest green, terracotta
   Typography: DM Serif Display (headings) + DM Sans (body)
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
  --color-parchment: #F8F5F0;
  --color-parchment-light: #FCFAF7;
  --color-forest: #1B4332;
  --color-forest-dark: #0F2B20;
  --color-forest-light: #2D6A4F;
  --color-forest-lighter: #40916C;
  --color-terracotta: #C76B4A;
  --color-terracotta-dark: #A85A3E;
  --color-terracotta-light: #D48A6F;
  --color-terracotta-pale: rgba(199,107,74,0.08);
  --color-cream: #FAF8F5;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-text-primary: #2D2D2D;
  --color-text-secondary: #5A6A6A;
  --color-text-muted: rgba(90,106,106,0.6);
  --color-border: rgba(27,67,50,0.08);
  --color-card-bg: #FFFFFF;
  --color-section-alt: #F5F2EC;

  --font-heading: 'DM Serif Display', serif;
  --font-body: 'DM Sans', sans-serif;

  --font-size-h1: clamp(2.4rem, 5.5vw, 4.2rem);
  --font-size-h2: clamp(1.7rem, 3.5vw, 2.8rem);
  --font-size-h3: clamp(1.25rem, 2.2vw, 1.65rem);
  --font-size-h4: clamp(1.05rem, 1.5vw, 1.2rem);
  --font-size-body: clamp(0.95rem, 1.2vw, 1.05rem);
  --font-size-body-large: clamp(1.05rem, 1.6vw, 1.2rem);
  --font-size-small: 0.875rem;
  --font-size-tiny: 0.8125rem;

  --spacing-2xs: 4px;
  --spacing-xs: 8px;
  --spacing-s: 16px;
  --spacing-m: 32px;
  --spacing-l: 48px;
  --spacing-xl: 80px;
  --spacing-xxl: 120px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 50%;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(27,67,50,0.06);
  --shadow-md: 0 4px 16px rgba(27,67,50,0.08);
  --shadow-lg: 0 8px 32px rgba(27,67,50,0.1);
  --shadow-xl: 0 12px 48px rgba(27,67,50,0.14);

  --transition-fast: 0.25s ease;
  --transition-medium: 0.45s ease;
  --transition-slow: 0.7s ease;

  --z-sticky: 100;
  --z-dropdown: 200;
  --z-modal: 300;
  --z-nav: 500;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; overflow-x: hidden; }

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: 1.65;
  color: var(--color-text-primary);
  background: var(--color-parchment);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; border-radius: var(--radius-md); }
a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-terracotta); }

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-s);
}

h1 { font-size: var(--font-size-h1); letter-spacing: -0.5px; }
h2 { font-size: var(--font-size-h2); letter-spacing: -0.3px; }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }

p { margin-bottom: var(--spacing-s); color: var(--color-text-secondary); line-height: 1.7; }

.body-large { font-size: var(--font-size-body-large); line-height: 1.55; }

.section-label {
  font-family: var(--font-body);
  font-size: var(--font-size-tiny);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-terracotta);
  margin-bottom: var(--spacing-xs);
  display: block;
}

/* ---- Container ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-m);
}

@media (max-width: 1024px) { .container { padding: 0 var(--spacing-s); } }
@media (max-width: 480px) { .container { padding: 0 var(--spacing-xs); } }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--font-size-small);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: var(--color-terracotta);
  color: white;
  box-shadow: 0 4px 12px rgba(199,107,74,0.3);
}

.btn-primary:hover {
  background: var(--color-terracotta-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(199,107,74,0.35);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--color-forest);
  border: 2px solid var(--color-forest);
}

.btn-secondary:hover {
  background: var(--color-forest);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.35);
}

.btn-ghost:hover {
  border-color: var(--color-terracotta);
  color: var(--color-terracotta);
}

.btn-cta {
  background: linear-gradient(135deg, var(--color-terracotta), var(--color-terracotta-light));
  color: white;
  padding: 18px 36px;
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(199,107,74,0.35);
  font-weight: 700;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(199,107,74,0.4);
  color: white;
}

.btn-group { display: flex; gap: var(--spacing-s); flex-wrap: wrap; margin-top: var(--spacing-m); }

@media (max-width: 480px) {
  .btn { width: 100%; }
  .btn-cta { padding: 16px 24px; }
}

/* ---- Glassmorphism Nav ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(27,67,50,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding: 0;
  transition: background var(--transition-medium);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}

.nav-brand a {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 400;
  color: white;
  letter-spacing: 0.3px;
}

.nav-brand a:hover { color: var(--color-terracotta); }

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-xs);
  align-items: center;
}

.nav-menu li a {
  color: rgba(255,255,255,0.85);
  font-size: var(--font-size-tiny);
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-menu li a:hover {
  color: white;
  background: rgba(255,255,255,0.08);
}

.nav-menu li a.active {
  color: white;
  background: rgba(199,107,74,0.2);
}

.nav-menu li a.btn-primary {
  padding: 10px 20px;
  font-size: var(--font-size-tiny);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  position: relative;
  z-index: 10;
  padding: 8px;
  margin-left: auto;
}

.nav-toggle span {
  width: 26px;
  height: 2.5px;
  background: white;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

@media (max-width: 1024px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-forest-dark);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-m) var(--spacing-m);
    gap: var(--spacing-xs);
    transition: right var(--transition-medium);
    z-index: var(--z-dropdown);
    align-items: stretch;
    border-left: 1px solid rgba(255,255,255,0.06);
  }

  .nav-menu.active { right: 0; }
  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .nav-menu li a {
    color: rgba(255,255,255,0.8);
    padding: 12px 16px;
    font-size: var(--font-size-body);
    border-radius: var(--radius-sm);
  }

  .nav-menu li a.btn-primary { margin-top: var(--spacing-xs); text-align: center; }
}

/* ---- Mobile overlay ---- */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: calc(var(--z-dropdown) - 1);
}

.nav-overlay.active { display: block; }

/* ---- Hero Section ---- */
.hero {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  min-height: 70vh;
  position: relative;
  overflow: hidden;
  background: var(--color-parchment);
}

.hero-content { max-width: 780px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.hero-content h1 { margin-bottom: var(--spacing-s); }
.hero-content .body-large { color: var(--color-text-secondary); max-width: 620px; margin: 0 auto; }

.hero-trust {
  margin-top: var(--spacing-m);
  display: flex;
  justify-content: center;
  gap: var(--spacing-m);
  flex-wrap: wrap;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.hero-trust span { display: flex; align-items: center; gap: 6px; }
.hero-trust span::before { content: '\2713'; color: var(--color-forest); font-weight: 700; }

@media (max-width: 768px) {
  .hero { min-height: auto; padding: var(--spacing-xl) 0 var(--spacing-l); }
  .hero-trust { gap: var(--spacing-s); }
}

/* ---- Sections ---- */
.section {
  padding: var(--spacing-xl) 0;
}

.section-alt { background: var(--color-section-alt); }
.section-light { background: var(--color-parchment-light); }
.section-forest {
  background: var(--color-forest);
  color: white;
}
.section-forest h2 { color: white; }
.section-forest p { color: rgba(255,255,255,0.8); }
.section-forest .section-label { color: var(--color-terracotta-light); }

@media (max-width: 768px) { .section { padding: var(--spacing-l) 0; } }

/* ---- Grids ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-l); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-m); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-m); }

@media (max-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr; gap: var(--spacing-m); }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) { .grid-4 { grid-template-columns: 1fr; } }

/* ---- Split layout ---- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (max-width: 1024px) { .split { grid-template-columns: 1fr; gap: var(--spacing-l); } }

.split-visual {
  background: linear-gradient(135deg, var(--color-forest), var(--color-forest-dark));
  border-radius: var(--radius-lg);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-small);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.split-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 30% 40%, rgba(255,255,255,0.04) 0%, transparent 50%);
}

/* ---- Cards ---- */
.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-m);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.card-icon {
  width: 52px;
  height: 52px;
  margin-bottom: var(--spacing-s);
  background: var(--color-terracotta-pale);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-terracotta);
  font-size: 20px;
}

.card h3 { font-size: 1.2rem; margin-bottom: var(--spacing-xs); }
.card p { font-size: 0.9375rem; margin-bottom: 0; }

@media (max-width: 480px) { .card { padding: var(--spacing-s); } }

/* ---- Process steps ---- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-m);
  counter-reset: step;
}

.process-step {
  text-align: center;
  padding: var(--spacing-m);
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: block;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-forest);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 44px;
  margin: 0 auto var(--spacing-xs);
  font-family: var(--font-body);
}

.process-step h4 { font-family: var(--font-body); font-weight: 600; font-size: 0.95rem; margin-bottom: var(--spacing-xs); }
.process-step p { font-size: 0.85rem; margin-bottom: 0; }

.process-step.terracotta::before { background: var(--color-terracotta); }

@media (max-width: 768px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .process-steps { grid-template-columns: 1fr; } }

/* ---- Feature list ---- */
.feature-list { list-style: none; padding: 0; margin: var(--spacing-m) 0; }
.feature-list li {
  padding: var(--spacing-xs) 0;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.feature-list li::before {
  content: '\2713';
  color: var(--color-forest);
  font-weight: 700;
  flex-shrink: 0;
}
.feature-list.light li { color: rgba(255,255,255,0.9); }
.feature-list.light li::before { color: var(--color-terracotta); }

/* ---- Guarantee badge ---- */
.guarantee-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-s);
  background: var(--color-terracotta-pale);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-small);
  font-weight: 600;
  color: var(--color-terracotta);
  margin-top: var(--spacing-s);
}

/* ---- CTA Section ---- */
.cta-section {
  padding: var(--spacing-xxl) 0;
  background: var(--color-section-alt);
}

.cta-box { max-width: 680px; margin: 0 auto; text-align: center; padding: var(--spacing-xl) var(--spacing-m); }
.cta-box .btn { margin-top: var(--spacing-s); }

@media (max-width: 768px) {
  .cta-section { padding: var(--spacing-l) 0; }
  .cta-box { padding: var(--spacing-m) var(--spacing-s); }
}

/* ---- Footer ---- */
.footer {
  background: var(--color-forest-dark);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-l);
}

.footer-content { display: flex; justify-content: space-between; margin-bottom: var(--spacing-l); flex-wrap: wrap; gap: var(--spacing-l); }

.footer-section { flex: 1; min-width: 200px; max-width: 300px; }
.footer-section:first-child { max-width: 260px; }
.footer-section h3 { font-family: var(--font-body); font-weight: 600; color: white; font-size: 1.05rem; margin-bottom: var(--spacing-s); }
.footer-section p { color: rgba(255,255,255,0.55); font-size: 0.875rem; margin-bottom: var(--spacing-xs); }
.footer-section ul { list-style: none; padding: 0; margin: 0; }
.footer-section ul li { margin-bottom: var(--spacing-xs); }
.footer-section ul li a { color: rgba(255,255,255,0.55); font-size: 0.875rem; }
.footer-section ul li a:hover { color: var(--color-terracotta); }

.social-links { display: flex; gap: var(--spacing-s); margin-top: var(--spacing-s); }
.social-links a {
  width: 38px; height: 38px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition-fast);
}
.social-links a:hover { background: var(--color-terracotta); color: white; transform: translateY(-2px); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: var(--spacing-m); text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.8125rem; margin-bottom: 0; }

@media (max-width: 768px) {
  .footer { padding: var(--spacing-l) 0 var(--spacing-m); }
  .footer-section { min-width: 100%; max-width: 100%; }
  .footer-content { gap: var(--spacing-m); }
}

/* ---- Tag ---- */
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: var(--font-body);
}

.tag-terracotta { background: var(--color-terracotta-pale); color: var(--color-terracotta); }
.tag-forest { background: rgba(27,67,50,0.08); color: var(--color-forest); }

/* ---- Utility ---- */
.text-center { text-align: center; }
.text-terracotta { color: var(--color-terracotta); }
.text-forest { color: var(--color-forest); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-s { margin-top: var(--spacing-s); }
.mt-m { margin-top: var(--spacing-m); }
.mt-l { margin-top: var(--spacing-l); }
.mb-s { margin-bottom: var(--spacing-s); }
.mb-m { margin-bottom: var(--spacing-m); }
.mb-l { margin-bottom: var(--spacing-l); }

/* ---- GSAP animation hooks ---- */
.gsap-fade { opacity: 0; }
.gsap-up { opacity: 0; transform: translateY(30px); }
.gsap-scale { opacity: 0; transform: scale(0.9); }