/* ============================================================
   SELF-SUSTAINABLE CITY — styles.css
   ============================================================ */

/* ── 1. Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── 2. CSS Custom Properties ── */
:root {
  --green-deep:   #0D1B12;
  --green-forest: #1B4D3E;
  --green-mid:    #2D6A4F;
  --green-light:  #52B788;
  --gold-sun:     #F5A623;
  --gold-light:   #FFD166;
  --teal-eco:     #4ECDC4;
  --earth-brown:  #8B5E3C;
  --sky-blue:     #87CEEB;
  --white-fresh:  #F2F7F2;
  --white-warm:   #FAFDF8;
  --text-dark:    #1C1C1C;
  --text-mid:     #444;
  --text-light:   #888;
  --red-crisis:   #E63946;
  --radius-sm:    8px;
  --radius-md:    16px;
  --radius-lg:    24px;
  --radius-xl:    40px;
  --shadow-card:  0 8px 32px rgba(0,0,0,0.18);
  --shadow-glow:  0 0 40px rgba(245,166,35,0.25);
  --transition:   0.35s cubic-bezier(0.4,0,0.2,1);
}

/* ── 3. Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; } /* smooth scroll handled by Lenis */
body {
  font-family: 'Inter', sans-serif;
  background: var(--green-deep);
  color: var(--white-fresh);
  overflow-x: hidden;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* ── 4. Typography ── */
h1, h2, h3, h4 { font-family: 'Playfair Display', serif; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 6vw, 5.5rem); font-weight: 900; }
h2 { font-size: clamp(1.8rem, 4vw, 3.2rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); font-weight: 700; }
h4 { font-size: 1.1rem; font-weight: 600; }
p  { font-size: clamp(0.95rem, 1.5vw, 1.1rem); line-height: 1.75; }

.label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-eco);
}
.gold { color: var(--gold-sun); }
.teal { color: var(--teal-eco); }

/* ── 5. Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--gold-sun);
  color: var(--green-deep);
  box-shadow: 0 4px 20px rgba(245,166,35,0.4);
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245,166,35,0.5);
}
.btn-outline {
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
}
.btn-outline:hover {
  border-color: var(--teal-eco);
  color: var(--teal-eco);
  transform: translateY(-2px);
}
.btn-teal {
  background: var(--teal-eco);
  color: var(--green-deep);
  box-shadow: 0 4px 20px rgba(78,205,196,0.3);
}
.btn-teal:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

/* ── 6. Section Utilities ── */
.section { padding: 100px 0; position: relative; }
.section-dark  { background: var(--green-deep); }
.section-forest{ background: var(--green-forest); }
.section-light { background: var(--white-fresh); color: var(--text-dark); }
.section-mid   { background: #0a1a0f; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-header { text-align: center; margin-bottom: 64px; }
.section-header p { max-width: 660px; margin: 16px auto 0; opacity: 0.8; }

/* fade-up animation class (JS adds .visible) */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ── 7. NAV ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}
#navbar.scrolled {
  background: rgba(13,27,18,0.95);
  backdrop-filter: blur(12px);
  padding: 14px 0;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  font-weight: 700;
}
.nav-logo .leaf { font-size: 1.4rem; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.85;
  transition: opacity 0.2s, color 0.2s;
}
.nav-links a:hover { opacity: 1; color: var(--teal-eco); }
.nav-cta { margin-left: 8px; padding: 10px 22px; font-size: 0.9rem; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
  border-radius: 2px;
}

/* ── 8. HERO ── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-landscape {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 45%;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 24px;
  margin: 0 auto;
  text-align: center;
  padding-top: 80px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(78,205,196,0.15);
  border: 1px solid rgba(78,205,196,0.4);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal-eco);
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}
.hero-title { margin-bottom: 24px; }
.hero-title em { font-style: italic; color: var(--gold-sun); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  opacity: 0.85;
  margin-bottom: 44px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}
.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  opacity: 0.6;
  animation: bounce 2s infinite;
}
.hero-scroll .arrow { font-size: 1.2rem; }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ── 9. CRISIS SECTION ── */
#crisis { background: #080f0a; }
.crisis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 56px;
}
.crisis-stat {
  background: rgba(230,57,70,0.08);
  border: 1px solid rgba(230,57,70,0.2);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.crisis-stat:hover {
  background: rgba(230,57,70,0.13);
  border-color: rgba(230,57,70,0.4);
  transform: translateY(-4px);
}
.crisis-stat .stat-icon { font-size: 2.2rem; margin-bottom: 12px; }
.crisis-stat .stat-num {
  font-family: 'Playfair Display', serif;
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--red-crisis);
  line-height: 1;
  margin-bottom: 8px;
}
.crisis-stat .stat-label { font-size: 0.88rem; opacity: 0.75; line-height: 1.4; }

.wasted-calc {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-top: 64px;
  text-align: center;
}
.wasted-calc h3 { margin-bottom: 8px; }
.wasted-calc p { opacity: 0.7; margin-bottom: 32px; }
.wasted-inputs {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.wasted-inputs label { font-size: 0.85rem; opacity: 0.7; display: block; margin-bottom: 6px; }
.wasted-inputs input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  color: #fff;
  padding: 12px 16px;
  font-size: 1rem;
  width: 180px;
  outline: none;
  transition: border-color 0.2s;
}
.wasted-inputs input:focus { border-color: var(--teal-eco); }
.wasted-result {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--red-crisis);
  margin: 16px 0 8px;
  transition: var(--transition);
}
.wasted-result-sub { font-size: 0.9rem; opacity: 0.6; }

/* ── 10. SOLUTION SECTION ── */
#solution { background: var(--green-deep); }
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.pillar-card {
  background: rgba(45,106,79,0.25);
  border: 1px solid rgba(82,183,136,0.2);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.pillar-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(78,205,196,0.05), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.pillar-card:hover { transform: translateY(-6px); border-color: var(--teal-eco); box-shadow: var(--shadow-card); }
.pillar-card:hover::before { opacity: 1; }
.pillar-icon { font-size: 2.8rem; margin-bottom: 20px; display: block; }
.pillar-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.pillar-card p { font-size: 0.92rem; opacity: 0.75; line-height: 1.6; }

/* ── 11. SIMULATION SECTION ── */
#simulation { background: #081410; overflow: hidden; }
.sim-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
}
.sim-btn {
  padding: 10px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.2);
  color: #fff;
  transition: var(--transition);
}
.sim-btn.active {
  background: var(--gold-sun);
  border-color: var(--gold-sun);
  color: var(--green-deep);
}
.sim-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(82,183,136,0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.sim-svg-container { position: relative; width: 100%; }
.sim-svg-container svg { width: 100%; height: auto; display: block; }

/* SVG animations */
.energy-path {
  stroke-dasharray: 8 6;
  animation: dash-flow 1.5s linear infinite;
}
.water-path {
  stroke-dasharray: 6 8;
  animation: dash-flow 2s linear infinite;
}
@keyframes dash-flow {
  to { stroke-dashoffset: -28; }
}
.solar-glow {
  animation: solar-pulse 2s ease-in-out infinite;
}
@keyframes solar-pulse {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1; }
}
.leaf-sway {
  animation: sway 3s ease-in-out infinite;
  transform-origin: bottom center;
}
@keyframes sway {
  0%, 100% { transform: rotate(-3deg); }
  50%       { transform: rotate(3deg); }
}
.night-only { display: none; }
.day-only   { display: block; }
body.night-mode .night-only { display: block; }
body.night-mode .day-only   { display: none; }
body.night-mode #simulation { background: #040a06; }

.sim-tooltip {
  position: absolute;
  background: rgba(13,27,18,0.97);
  border: 1px solid var(--teal-eco);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 0.85rem;
  max-width: 240px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 10;
}
.sim-tooltip.show { opacity: 1; transform: translateY(0); }
.sim-tooltip strong { color: var(--teal-eco); display: block; margin-bottom: 4px; }

.sim-callout {
  text-align: center;
  margin-top: 28px;
  font-size: 1rem;
  color: var(--teal-eco);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ── 12. SIMULATORS ── */
#simulators { background: var(--green-deep); }
.sim-tabs {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.06);
  padding: 6px;
  border-radius: 50px;
  margin: 0 auto 56px;
  width: fit-content;
  flex-wrap: wrap;
  justify-content: center;
}
.sim-tab-btn {
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.sim-tab-btn.active {
  background: var(--green-mid);
  color: #fff;
}
.sim-panel { display: none; }
.sim-panel.active { display: block; }

/* Energy calc */
.energy-calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.calc-input-group { margin-bottom: 32px; }
.calc-input-group label {
  display: block;
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: 10px;
  font-weight: 500;
}
.range-wrap { position: relative; }
.range-wrap input[type=range] {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.15);
  outline: none;
  cursor: pointer;
}
.range-wrap input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold-sun);
  box-shadow: 0 2px 8px rgba(245,166,35,0.5);
}
.range-value {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-sun);
  margin-top: 10px;
}
.savings-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.savings-card {
  background: rgba(45,106,79,0.3);
  border: 1px solid rgba(82,183,136,0.2);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}
.savings-card .val {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--teal-eco);
  display: block;
  margin-bottom: 4px;
}
.savings-card .lbl { font-size: 0.78rem; opacity: 0.65; }
.chart-wrap { position: relative; height: 260px; }

/* cost comparison */
.cost-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.budget-btn {
  padding: 8px 22px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.2);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  transition: var(--transition);
}
.budget-btn.active {
  background: var(--gold-sun);
  border-color: var(--gold-sun);
  color: var(--green-deep);
}
.cost-chart-wrap { position: relative; height: 340px; }

/* carbon gauge */
.gauge-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.gauge-container { position: relative; text-align: center; }
#carbon-gauge { width: 100%; max-width: 320px; }
.gauge-toggle {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}
.gauge-btn {
  padding: 10px 24px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.2);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  transition: var(--transition);
}
.gauge-btn.active { background: var(--green-mid); border-color: var(--green-light); }
.gauge-stats { display: flex; flex-direction: column; gap: 24px; }
.gauge-stat { padding: 24px; background: rgba(255,255,255,0.05); border-radius: var(--radius-md); }
.gauge-stat .g-val {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--teal-eco);
}
.gauge-stat p { font-size: 0.88rem; opacity: 0.7; margin-top: 4px; }

/* ── 13. HOME CATALOG ── */
#catalog { background: var(--white-fresh); color: var(--text-dark); overflow: hidden; }
#catalog .section-header p { color: var(--text-mid); }
#catalog .label { color: var(--green-forest); }

/* Horizontal scroll track */
.catalog-outer {
  overflow: hidden;
  margin: 0 -24px;
  padding: 0 24px 8px;
}
.catalog-track {
  display: flex;
  gap: 28px;
  padding: 8px 24px 24px;
  width: max-content;
}

/* Dots */
.catalog-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 24px 0 8px;
}
.catalog-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(27,77,62,0.2);
  transition: var(--transition);
}
.catalog-dot.active {
  background: var(--green-forest);
  width: 24px;
  border-radius: 4px;
}

/* Mobile: CSS snap scroll fallback */
@media (max-width: 768px) {
  .catalog-outer { overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; }
  .catalog-track { padding: 8px 16px 24px; }
}
.home-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  width: 320px;
  flex-shrink: 0;
  scroll-snap-align: start;
}
.home-card:hover { transform: translateY(-8px); box-shadow: 0 16px 48px rgba(0,0,0,0.14); }
.home-card-img {
  height: 200px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}
.home-card-img.seed   { background: linear-gradient(135deg, #2D6A4F, #52B788); }
.home-card-img.grove  { background: linear-gradient(135deg, #1B4D3E, #2D6A4F); }
.home-card-img.villa  { background: linear-gradient(135deg, #0D1B12, #1B4D3E); }
.home-card-img.plot   { background: linear-gradient(135deg, #52B788, #87CEEB); }
.home-card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.home-card-price {
  font-family: 'Playfair Display', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--green-forest);
  margin-bottom: 4px;
}
.home-card-config { font-size: 0.85rem; color: var(--text-light); margin-bottom: 16px; }
.home-features { margin-bottom: 20px; }
.home-features li {
  font-size: 0.88rem;
  padding: 6px 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-mid);
}
.home-features li .check { color: var(--green-forest); font-weight: 700; }
.home-card .btn { width: 100%; justify-content: center; margin-top: auto; }

.catalog-note {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9rem;
  color: var(--text-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* ── 14. INVESTOR SECTION ── */
#investor { background: #060d09; }
.investor-why {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}
.why-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
  transition: var(--transition);
}
.why-card:hover { border-color: var(--gold-sun); transform: translateY(-4px); }
.why-card .why-icon { font-size: 2rem; margin-bottom: 12px; }
.why-card h4 { margin-bottom: 8px; font-size: 1rem; }
.why-card p  { font-size: 0.85rem; opacity: 0.65; }

.investor-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}
.tier-card {
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
}
.tier-card.community { background: rgba(45,106,79,0.3); border: 1px solid rgba(82,183,136,0.3); }
.tier-card.partner   { background: rgba(245,166,35,0.12); border: 2px solid var(--gold-sun); }
.tier-card.developer { background: rgba(78,205,196,0.1); border: 1px solid rgba(78,205,196,0.3); }
.tier-card.partner .tier-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--gold-sun);
  color: var(--green-deep);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  letter-spacing: 0.08em;
}
.tier-label { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.6; margin-bottom: 8px; }
.tier-price {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold-sun);
  margin-bottom: 20px;
}
.tier-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.tier-features li { font-size: 0.9rem; display: flex; gap: 8px; align-items: flex-start; opacity: 0.85; }
.tier-features .tick { color: var(--teal-eco); flex-shrink: 0; }

.investor-chart-wrap { max-width: 700px; margin: 0 auto; position: relative; height: 300px; }
.investor-cta { text-align: center; margin-top: 56px; }
.investor-cta h3 { margin-bottom: 16px; }
.investor-cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }

/* ── 15. WHY FUTURE ── */
#future { background: #040a06; overflow: hidden; }
.future-narrative {
  max-width: 780px;
  margin: 0 auto 80px;
  text-align: center;
}
.future-narrative .big-text {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 32px;
}
.future-narrative .big-text .accent { color: var(--gold-sun); }
.future-stats-row {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 48px 0;
}
.future-stat { text-align: center; }
.future-stat .f-num {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--teal-eco);
  display: block;
  line-height: 1;
}
.future-stat .f-lbl { font-size: 0.85rem; opacity: 0.6; margin-top: 6px; }

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--teal-eco), var(--gold-sun));
  transform: translateX(-50%);
}
.tl-item {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  gap: 20px;
  margin-bottom: 48px;
  align-items: center;
}
.tl-item:nth-child(even) .tl-content:first-child { grid-column: 3; order: 3; text-align: left; }
.tl-item:nth-child(even) .tl-dot { order: 2; }
.tl-item:nth-child(even) .tl-empty { order: 1; }
.tl-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--green-forest);
  border: 3px solid var(--teal-eco);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  justify-self: center;
  color: var(--teal-eco);
  z-index: 1;
}
.tl-content {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  padding: 24px;
}
.tl-content .tl-year { color: var(--gold-sun); font-weight: 700; font-size: 0.85rem; margin-bottom: 6px; }
.tl-content h4 { margin-bottom: 6px; }
.tl-content p { font-size: 0.88rem; opacity: 0.7; }
.tl-empty {}

.future-end {
  text-align: center;
  margin-top: 80px;
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-style: italic;
  opacity: 0.85;
}

/* ── 16. ABOUT ── */
#about { background: var(--green-forest); }
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: center;
}
.about-photo {
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #2D6A4F, #0D1B12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.about-content .label { margin-bottom: 16px; }
.about-content h2 { margin-bottom: 20px; }
.about-content p  { opacity: 0.8; margin-bottom: 16px; }
.quote-block {
  border-left: 3px solid var(--gold-sun);
  padding-left: 24px;
  margin: 28px 0;
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-style: italic;
  color: var(--gold-light);
  line-height: 1.5;
}
.social-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}
.social-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.08);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.12);
}
.social-link:hover {
  background: rgba(255,255,255,0.14);
  transform: translateY(-2px);
  border-color: var(--teal-eco);
}

/* ── 17. COMMUNITY ── */
#community { background: var(--green-deep); }
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}
.community-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
  transition: var(--transition);
}
.community-card:hover {
  border-color: var(--green-light);
  transform: translateY(-4px);
  background: rgba(82,183,136,0.08);
}
.community-card .comm-icon { font-size: 2.4rem; margin-bottom: 14px; }
.community-card h4 { margin-bottom: 8px; }
.community-card p { font-size: 0.88rem; opacity: 0.7; }

.youtube-embed {
  max-width: 720px;
  margin: 0 auto 48px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0.6;
  gap: 12px;
}
.youtube-embed .yt-icon { font-size: 2rem; color: #FF0000; }

/* ── 18. CONTACT ── */
#contact { background: #050e07; }
.contact-tabs {
  display: flex;
  gap: 4px;
  background: rgba(255,255,255,0.06);
  padding: 6px;
  border-radius: 16px;
  margin: 0 auto 40px;
  width: fit-content;
  flex-wrap: wrap;
  justify-content: center;
}
.contact-tab-btn {
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.contact-tab-btn.active {
  background: var(--green-mid);
  color: #fff;
}
.contact-panel { display: none; }
.contact-panel.active { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }

.contact-form-wrap h3 { margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.82rem; opacity: 0.65; margin-bottom: 6px; font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: #fff;
  padding: 12px 16px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--teal-eco); }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group select option { background: var(--green-deep); }

.contact-info-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-info-card h4 { margin-bottom: 20px; }
.info-item {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
  align-items: flex-start;
}
.info-item .info-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.info-item p { font-size: 0.9rem; opacity: 0.8; line-height: 1.5; }
.info-item a { color: var(--teal-eco); }
.whatsapp-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #25D366;
  color: #fff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: 24px;
  transition: var(--transition);
}
.whatsapp-cta:hover { background: #1fba59; transform: translateY(-2px); }

/* ── 19. WHATSAPP FLOAT ── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.12);
  box-shadow: 0 8px 32px rgba(37,211,102,0.5);
}

/* ── 20. FOOTER ── */
footer {
  background: #030805;
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; opacity: 0.55; line-height: 1.7; max-width: 260px; }
.footer-col h5 { font-size: 0.85rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--teal-eco); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; opacity: 0.6; transition: opacity 0.2s; }
.footer-col ul li a:hover { opacity: 1; color: var(--teal-eco); }
.footer-social {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--green-mid); transform: translateY(-2px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; opacity: 0.4; }
.footer-bottom a { color: var(--teal-eco); }

/* ── 21. RESPONSIVE ── */
@media (max-width: 1024px) {
  .about-layout { grid-template-columns: 1fr; }
  .about-photo { max-width: 300px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-links { display: none; }
  .hamburger { display: flex; }

  /* mobile nav */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(13,27,18,0.98);
    justify-content: center;
    align-items: center;
    gap: 32px;
    z-index: 999;
    font-size: 1.4rem;
  }
  .nav-links.open .nav-cta { display: none; }

  .energy-calc-layout { grid-template-columns: 1fr; }
  .gauge-layout { grid-template-columns: 1fr; }
  .contact-panel.active { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 20px; }
  .tl-item { grid-template-columns: 40px 1fr; }
  .tl-item:nth-child(even) .tl-content:first-child { grid-column: auto; order: unset; }
  .tl-item:nth-child(even) .tl-dot { order: unset; }
  .tl-item:nth-child(even) .tl-empty { display: none; }
  .tl-empty { display: none; }
  .wasted-calc { padding: 28px 20px; }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; align-items: center; }
  .sim-tabs { border-radius: 12px; }
  .investor-tiers { grid-template-columns: 1fr; }
  .savings-cards { grid-template-columns: 1fr 1fr; }
}