/* ================================================================
   VOLTA — BLACK & WHITE FUTURISTIC ENERGY WEBSITE
   ================================================================ */

/* ── RESET & VARIABLES ─────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black:       #000000;
  --off-black:   #0a0a0a;
  --dark-gray:   #111111;
  --mid-gray:    #1e1e1e;
  --border:      #2a2a2a;
  --white:       #ffffff;
  --off-white:   #f0f0f0;
  --accent:      #ffffff;
  --accent-dim:  rgba(255,255,255,0.08);
  --glow:        rgba(255,255,255,0.15);
  --font-main:   'Orbitron', monospace;
  --font-body:   'Rajdhani', sans-serif;
  --ease:        cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background-color: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── SCROLLBAR ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--white); border-radius: 2px; }

/* ── SELECTION ─────────────────────────────────────────────── */
::selection { background: var(--white); color: var(--black); }

/* ── TYPOGRAPHY ────────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--font-main); line-height: 1.1; }
p { font-family: var(--font-body); font-size: 1.05rem; font-weight: 400; }

/* ── UTILITY ───────────────────────────────────────────────── */
.accent { color: var(--white); position: relative; }
.accent::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--white), transparent);
}

.hidden { display: none !important; }

/* ════════════════════════════════════════════════════════════
   PRELOADER
   ════════════════════════════════════════════════════════════ */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
#preloader.hidden {
  display: flex !important;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.preloader-battery {
  display: flex;
  align-items: center;
  gap: 0;
}

.battery-body {
  width: 80px;
  height: 36px;
  border: 2px solid var(--white);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.battery-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: var(--white);
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px rgba(255,255,255,0.5);
}

.battery-tip {
  width: 8px;
  height: 16px;
  background: var(--white);
  border-radius: 0 2px 2px 0;
  margin-left: 2px;
}

.preloader-text {
  font-family: var(--font-main);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--off-white);
  opacity: 0.7;
}

.dots::after {
  content: '';
  animation: dotting 1.5s infinite;
}
@keyframes dotting {
  0%   { content: ''; }
  25%  { content: '.'; }
  50%  { content: '..'; }
  75%  { content: '...'; }
}

/* ════════════════════════════════════════════════════════════
   NAVBAR
   ════════════════════════════════════════════════════════════ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), backdrop-filter 0.4s;
}

#navbar.scrolled {
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
}

.logo-volt { font-size: 1.5rem; }

.logo-text {
  font-family: var(--font-main);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
}

.logo-accent { color: var(--off-white); opacity: 0.6; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-main);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--white); }

.nav-cta {
  border: 1px solid var(--white) !important;
  padding: 0.45rem 1rem !important;
  color: var(--white) !important;
  transition: background 0.3s, color 0.3s !important;
}
.nav-cta:hover {
  background: var(--white) !important;
  color: var(--black) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: rgba(0,0,0,0.97);
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  gap: 0.5rem;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  font-family: var(--font-main);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.3s;
}
.mobile-link:hover { color: var(--white); }
.mobile-cta {
  color: var(--white) !important;
  border-bottom: none !important;
  margin-top: 0.5rem;
}

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

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--black);
}

/* Grid overlay */
.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* Floating objects */
.float-objects {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.float-obj { position: absolute; }

/* Orbit rings */
.orbit-ring {
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 50%;
  animation: orbit-spin linear infinite;
}
.ring1 {
  width: 500px; height: 500px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 25s;
}
.ring2 {
  width: 750px; height: 750px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 40s;
  animation-direction: reverse;
}
.ring3 {
  width: 1000px; height: 1000px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 60s;
}

@keyframes orbit-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Battery floats */
.battery-float {
  width: 40px; height: 20px;
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: 3px;
  animation: float-y 6s ease-in-out infinite;
}
.battery-float::before {
  content: '';
  position: absolute;
  left: 2px; top: 2px; bottom: 2px;
  width: 55%;
  background: rgba(255,255,255,0.25);
  border-radius: 1px;
}
.battery-float::after {
  content: '';
  position: absolute;
  right: -5px; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 10px;
  background: rgba(255,255,255,0.25);
  border-radius: 0 2px 2px 0;
}

.f1 { top: 20%; left: 10%; animation-delay: 0s; animation-duration: 7s; }
.f4 { top: 70%; right: 8%; animation-delay: 3s; animation-duration: 9s; }

/* Bolt floats */
.bolt-float {
  font-size: 1.8rem;
  opacity: 0.12;
  animation: float-y 5s ease-in-out infinite;
}
.f2 { top: 15%; right: 15%; animation-delay: 1s; animation-duration: 6s; }
.f5 { bottom: 25%; left: 20%; animation-delay: 2.5s; animation-duration: 8s; }

/* Particles */
.particle {
  width: 4px; height: 4px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  animation: particle-rise linear infinite;
}
.p1 { left: 15%; bottom: 0; animation-duration: 8s; animation-delay: 0s; }
.p2 { left: 35%; bottom: 0; animation-duration: 10s; animation-delay: 2s; }
.p3 { left: 55%; bottom: 0; animation-duration: 7s; animation-delay: 4s; }
.p4 { left: 75%; bottom: 0; animation-duration: 9s; animation-delay: 1s; }
.p5 { left: 25%; bottom: 0; animation-duration: 11s; animation-delay: 3s; }
.p6 { left: 85%; bottom: 0; animation-duration: 6s; animation-delay: 5s; }

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-20px); }
}
@keyframes float-drift {
  0%   { transform: translate(0, 0) rotate(0deg); }
  25%  { transform: translate(30px, -15px) rotate(5deg); }
  50%  { transform: translate(10px, -30px) rotate(-3deg); }
  75%  { transform: translate(-20px, -10px) rotate(4deg); }
  100% { transform: translate(0, 0) rotate(0deg); }
}
@keyframes particle-rise {
  0%   { transform: translateY(0); opacity: 0.8; }
  100% { transform: translateY(-100vh); opacity: 0; }
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
  padding: 0 2rem;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-main);
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  color: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.4rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: clamp(3rem, 9vw, 7.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 1.5rem;
  color: var(--white);
  text-shadow: 0 0 80px rgba(255,255,255,0.1);
}

.title-accent {
  -webkit-text-stroke: 1px rgba(255,255,255,0.5);
  color: transparent;
  display: inline-block;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.6);
  margin-bottom: 2.5rem;
  font-weight: 400;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-main);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-decoration: none;
  background: var(--white);
  color: var(--black);
  padding: 0.9rem 2rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.3s;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,255,255,0.25);
}

.btn-secondary {
  display: inline-block;
  font-family: var(--font-main);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-decoration: none;
  color: var(--white);
  padding: 0.9rem 2rem;
  border: 1px solid rgba(255,255,255,0.3);
  transition: border-color 0.3s, background 0.3s;
}
.btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.05);
}

.btn-full { width: 100%; justify-content: center; }
.btn-icon { font-size: 1rem; }

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.stat-num {
  font-family: var(--font-main);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1;
}
.stat-unit {
  font-family: var(--font-main);
  font-size: 1.5rem;
  color: rgba(255,255,255,0.5);
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
}

.stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.15);
}

/* ── Blueprint sketch cinematics ── */
.blueprint-sketch {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  opacity: 0.6;
  transition: opacity 0.6s;
}
.blueprint-sketch svg {
  width: 100%;
  height: 100%;
}

/* Hero — left sketch (micro-bus) */
.sketch-left {
  left: -8%;
  top: 10%;
  width: 420px;
  height: 500px;
  transform: rotate(-6deg);
  mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.8) 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.8) 60%, transparent 100%);
}

/* Hero — right sketch (swap station) */
.sketch-right {
  right: -8%;
  top: 8%;
  width: 420px;
  height: 500px;
  transform: rotate(5deg);
  mask-image: linear-gradient(to left, transparent 0%, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.8) 60%, transparent 100%);
  -webkit-mask-image: linear-gradient(to left, transparent 0%, rgba(0,0,0,0.6) 30%, rgba(0,0,0,0.8) 60%, transparent 100%);
}

/* Section-level cinematic sketches */
.blueprint-sketch.sketch-section-left {
  left: -6%;
  top: 50%;
  transform: translateY(-50%) rotate(-4deg);
  width: 340px;
  height: 420px;
  mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
}

.blueprint-sketch.sketch-section-right {
  right: -6%;
  top: 50%;
  transform: translateY(-50%) rotate(4deg);
  width: 340px;
  height: 420px;
  mask-image: linear-gradient(to left, transparent 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to left, transparent 0%, rgba(0,0,0,0.5) 40%, transparent 100%);
}

/* Inline blueprint (problem section vs visual) */
.blueprint-inline {
  width: 200px;
  height: 120px;
  flex-shrink: 0;
}
.blueprint-inline.blueprint-keke {
  width: 360px;
  height: 260px;
}
.blueprint-inline svg {
  width: 100%;
  height: 100%;
}

/* Animated smoke puffs on petrol keke */
.smoke-puff {
  animation: smoke-rise 3s ease-out infinite;
  transform-origin: center center;
}
.smoke-1 { animation-delay: 0s; }
.smoke-2 { animation-delay: 0.5s; }
.smoke-3 { animation-delay: 1.0s; }
.smoke-4 { animation-delay: 1.5s; }
.smoke-5 { animation-delay: 2.0s; }

@keyframes smoke-rise {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0.5);
  }
  20% {
    opacity: 1;
    transform: translateY(-5px) scale(0.8);
  }
  60% {
    opacity: 0.6;
    transform: translateY(-15px) scale(1.2);
  }
  100% {
    opacity: 0;
    transform: translateY(-30px) scale(1.8);
  }
}

@media (max-width: 900px) {
  .sketch-left, .sketch-right { width: 280px; height: 340px; }
  .sketch-section-left, .sketch-section-right { width: 220px; height: 280px; opacity: 0.3; }
  .blueprint-inline.blueprint-keke { width: 280px; height: 200px; }
}

@media (max-width: 600px) {
  .sketch-left, .sketch-right { display: none; }
  .sketch-section-left, .sketch-section-right { display: none; }
  .blueprint-inline { width: 150px; height: 90px; }
  .blueprint-inline.blueprint-keke { width: 100%; max-width: 320px; height: 200px; }
  .smoke-visual { gap: 1rem; padding: 1.5rem 1rem; }
}

/* ════════════════════════════════════════════════════════════
   SECTIONS BASE
   ════════════════════════════════════════════════════════════ */
.section {
  padding: 7rem 0;
  position: relative;
  overflow: hidden;
}

.section-dark {
  background: var(--dark-gray);
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-label {
  font-family: var(--font-main);
  font-size: 0.6rem;
  letter-spacing: 0.4em;
  color: rgba(255,255,255,0.35);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.section-intro {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
  max-width: 700px;
  margin-bottom: 4rem;
  line-height: 1.8;
}

.strike-text {
  text-decoration: line-through;
  opacity: 0.5;
  text-decoration-thickness: 3px;
}

/* ════════════════════════════════════════════════════════════
   PROBLEM SECTION
   ════════════════════════════════════════════════════════════ */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.problem-card {
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s;
  animation-delay: var(--delay);
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--white), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.problem-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.2); }
.problem-card:hover::before { opacity: 1; }

.problem-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  filter: grayscale(1);
}

.problem-card h3 {
  font-family: var(--font-main);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  color: var(--white);
}

.problem-card p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.problem-bar {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.problem-fill {
  height: 100%;
  background: var(--white);
  width: 0%;
  border-radius: 2px;
  transition: width 1.5s var(--ease);
}
.problem-fill.animate { width: var(--pct); }

.problem-metric {
  font-family: var(--font-main);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
}

/* Smoke visual / comparison */
.smoke-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2.5rem;
  background: var(--mid-gray);
  border: 1px solid var(--border);
  flex-wrap: wrap;
}

.vs-badge {
  font-family: var(--font-main);
  font-size: 1.5rem;
  font-weight: 900;
  color: rgba(255,255,255,0.2);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
}

/* ════════════════════════════════════════════════════════════
   SOLUTION SECTION
   ════════════════════════════════════════════════════════════ */
.solution-features {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 4rem;
}

.solution-feature {
  display: grid;
  grid-template-columns: 80px 1fr 1fr;
  gap: 2rem;
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}

@media (max-width: 768px) {
  .solution-feature {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.feature-number {
  font-family: var(--font-main);
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255,255,255,0.08);
  line-height: 1;
}

.feature-content h3 {
  font-family: var(--font-main);
  font-size: 1rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  color: var(--white);
}

.feature-content p {
  font-size: 1rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}

.feature-visual {
  display: flex;
  justify-content: center;
}

/* Conversion animation */
.conversion-anim {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 2rem;
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 1.5rem 2rem;
}
.conv-before { opacity: 0.4; }
.conv-arrow {
  font-family: var(--font-main);
  font-size: 1.2rem;
  color: rgba(255,255,255,0.3);
  animation: pulse-arrow 2s ease-in-out infinite;
}
@keyframes pulse-arrow {
  0%, 100% { opacity: 0.3; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(4px); }
}

/* Swap animation */
.swap-anim {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 2.5rem;
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 1.5rem 2rem;
}
.swap-icon {
  font-family: var(--font-main);
  font-size: 1.5rem;
  color: var(--white);
  animation: swap-pulse 2s ease-in-out infinite;
}
.depleted { opacity: 0.25; }
.charged { animation: charge-glow 2s ease-in-out infinite; }

@keyframes swap-pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 1; }
}
@keyframes charge-glow {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.5) drop-shadow(0 0 8px rgba(255,255,255,0.4)); }
}

/* Chart animation */
.chart-anim {
  display: flex;
  align-items: flex-end;
  gap: 1.5rem;
  height: 100px;
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 1rem 2rem;
}

.chart-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}

.chart-bar > div {
  width: 40px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  transition: height 1.5s var(--ease);
}

.petrol-bar::before {
  content: '';
  display: block;
  width: 40px;
  background: rgba(255,255,255,0.2);
  height: 0;
  transition: height 1.5s var(--ease);
}
.petrol-bar.animate::before { height: 85px; }

.elec-bar::before {
  content: '';
  display: block;
  width: 40px;
  background: var(--white);
  height: 0;
  transition: height 1.5s var(--ease) 0.3s;
  box-shadow: 0 0 10px rgba(255,255,255,0.3);
}
.elec-bar.animate::before { height: 30px; }

.chart-bar span {
  font-family: var(--font-main);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.4);
}

/* Compare table */
.compare-table {
  border: 1px solid var(--border);
  overflow: hidden;
}

.compare-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid var(--border);
}

.compare-col-label,
.compare-col {
  padding: 1rem 1.5rem;
  font-family: var(--font-main);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.petrol-col { color: rgba(255,255,255,0.4); border-left: 1px solid var(--border); }
.ev-col { color: var(--white); border-left: 1px solid var(--border); }

.compare-row,
.compare-row.alt {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 1px solid var(--border);
}
.compare-row.alt { background: rgba(255,255,255,0.02); }

.compare-factor,
.compare-bad,
.compare-good {
  padding: 0.9rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.compare-factor {
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}
.compare-bad {
  border-left: 1px solid var(--border);
  color: rgba(255,255,255,0.3);
}
.compare-good {
  border-left: 1px solid var(--border);
  color: var(--white);
  font-weight: 600;
}

@media (max-width: 600px) {
  .compare-header,
  .compare-row,
  .compare-row.alt { grid-template-columns: 1fr; }
  .compare-col,
  .compare-bad,
  .compare-good { border-left: none; border-top: 1px solid var(--border); }
}

/* ════════════════════════════════════════════════════════════
   ROUTES SECTION
   ════════════════════════════════════════════════════════════ */
.route-map-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  margin-bottom: 4rem;
}

.map-hub {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
}

.hub-pulse {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  animation: hub-ripple 2s ease-out infinite;
}
.hub-pulse::after {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.1);
  animation: hub-ripple 2s ease-out infinite 0.8s;
}

@keyframes hub-ripple {
  0%   { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}

.hub-core {
  width: 80px; height: 80px;
  background: var(--white);
  color: var(--black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-main);
  font-size: 0.5rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-align: center;
  box-shadow: 0 0 30px rgba(255,255,255,0.3);
}

.route-nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.route-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.node-dot {
  width: 14px; height: 14px;
  border: 2px solid var(--white);
  border-radius: 50%;
  background: var(--black);
  box-shadow: 0 0 10px rgba(255,255,255,0.4);
  animation: node-pulse 2s ease-in-out infinite;
}

@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 10px rgba(255,255,255,0.4); }
  50% { box-shadow: 0 0 20px rgba(255,255,255,0.7); }
}

.node-label {
  font-family: var(--font-main);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.6);
  text-align: center;
  line-height: 1.4;
}

/* Node positions */
.node-1 { top: 10%; left: 50%; transform: translateX(-50%); }
.node-2 { top: 50%; right: 5%; transform: translateY(-50%); }
.node-3 { bottom: 10%; left: 50%; transform: translateX(-50%); }
.node-4 { top: 50%; left: 5%; transform: translateY(-50%); }

/* Route lines (SVG-like with CSS) */
.route-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.route-line {
  position: absolute;
  background: linear-gradient(var(--white), rgba(255,255,255,0.1));
  width: 1px;
  transform-origin: bottom center;
  opacity: 0.2;
}

.route-line-1 {
  height: 35%;
  left: 50%; bottom: 50%;
  animation: route-dash 3s linear infinite;
}
.route-line-2 {
  height: 1px; width: 40%;
  right: 10%; top: 50%;
  background: linear-gradient(90deg, rgba(255,255,255,0.1), var(--white));
  animation: route-dash 3s linear infinite 0.75s;
}
.route-line-3 {
  height: 35%;
  left: 50%; top: 50%;
  background: linear-gradient(rgba(255,255,255,0.1), var(--white));
  animation: route-dash 3s linear infinite 1.5s;
}
.route-line-4 {
  height: 1px; width: 40%;
  left: 10%; top: 50%;
  background: linear-gradient(90deg, var(--white), rgba(255,255,255,0.1));
  animation: route-dash 3s linear infinite 2.25s;
}

@keyframes route-dash {
  0% { opacity: 0.1; }
  50% { opacity: 0.4; }
  100% { opacity: 0.1; }
}

/* Route cards */
.routes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.route-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 2rem;
  position: relative;
  transition: transform 0.3s var(--ease), border-color 0.3s;
  animation-delay: var(--delay);
}
.route-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.25); }

.route-number {
  font-family: var(--font-main);
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(255,255,255,0.06);
  line-height: 1;
  flex-shrink: 0;
}

.route-info h3 {
  font-family: var(--font-main);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--white);
}

.route-info p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}

.route-badge {
  position: absolute;
  top: 1rem; right: 1rem;
  font-family: var(--font-main);
  font-size: 0.5rem;
  letter-spacing: 0.15em;
  background: rgba(255,255,255,0.9);
  color: var(--black);
  padding: 0.2rem 0.6rem;
  font-weight: 700;
}

/* ════════════════════════════════════════════════════════════
   HOW IT WORKS SECTION
   ════════════════════════════════════════════════════════════ */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 5rem;
}

.step {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  padding: 3rem 0;
  animation-delay: var(--delay);
}

@media (max-width: 600px) {
  .step { grid-template-columns: 1fr; }
  .step-visual { display: none; }
}

.step-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-circle {
  width: 80px; height: 80px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  background: var(--mid-gray);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step-connector {
  flex: 1;
  width: 1px;
  background: linear-gradient(rgba(255,255,255,0.15), transparent);
  margin-top: 8px;
}
.step-connector.last { display: none; }

.step-content {
  padding-top: 1rem;
}

.step-num {
  font-family: var(--font-main);
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.3);
  margin-bottom: 0.5rem;
}

.step-content h3 {
  font-family: var(--font-main);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--white);
}

.step-content p {
  font-size: 1rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 600px;
}

/* Energy flow */
.energy-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 3rem 2rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.flow-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.flow-icon {
  font-size: 2rem;
  filter: grayscale(0.3);
  animation: flow-pulse 3s ease-in-out infinite;
}

.flow-label {
  font-family: var(--font-main);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  white-space: nowrap;
}

.flow-arrow {
  width: 60px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  margin-bottom: 1.5rem;
}

.flow-line {
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.15);
  position: relative;
  overflow: hidden;
}

.flow-pulse {
  position: absolute;
  top: -2px;
  width: 20px;
  height: 5px;
  background: var(--white);
  border-radius: 2px;
  animation: flow-move 2s linear infinite;
  box-shadow: 0 0 8px rgba(255,255,255,0.5);
}

@keyframes flow-move {
  0%   { left: -20px; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

@keyframes flow-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@media (max-width: 600px) {
  .flow-arrow { display: none; }
  .energy-flow { gap: 1rem; }
}

/* ════════════════════════════════════════════════════════════
   IMPACT SECTION
   ════════════════════════════════════════════════════════════ */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.impact-card {
  background: var(--mid-gray);
  border: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease);
  animation-delay: var(--delay);
}
.impact-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--white), transparent);
  animation: shimmer 3s linear infinite;
}
.impact-card:hover { transform: translateY(-4px); }

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.impact-num {
  font-family: var(--font-main);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 0.75rem;
  line-height: 1;
}

.impact-label {
  font-family: var(--font-main);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.5rem;
}

.impact-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.3);
}

/* ════════════════════════════════════════════════════════════
   CTA SECTION
   ════════════════════════════════════════════════════════════ */
.section-cta {
  background: var(--dark-gray);
  position: relative;
  overflow: hidden;
}

.cta-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cta-particle {
  position: absolute;
  font-size: 2rem;
  opacity: 0.05;
  animation: float-y 8s ease-in-out infinite;
}
.cp1 { top: 10%; left: 5%; animation-delay: 0s; }
.cp2 { top: 30%; right: 8%; animation-delay: 2s; animation-duration: 10s; }
.cp3 { bottom: 20%; left: 15%; animation-delay: 4s; animation-duration: 7s; }
.cp4 { top: 60%; right: 20%; animation-delay: 1s; animation-duration: 9s; }
.cp5 { bottom: 10%; right: 5%; animation-delay: 3s; animation-duration: 11s; }

.cta-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-badge {
  display: inline-block;
  font-family: var(--font-main);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.4);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.cta-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.cta-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 3rem;
  line-height: 1.8;
}

/* Form */
.cta-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.cta-form input,
.cta-form select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--white);
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s;
}

.cta-form input::placeholder { color: rgba(255,255,255,0.25); }
.cta-form input:focus,
.cta-form select:focus { border-color: rgba(255,255,255,0.5); }

.cta-form select { cursor: pointer; }
.cta-form select option { background: var(--dark-gray); color: var(--white); }

.form-note {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.25);
  margin-top: 0.5rem;
}

/* Success message */
.form-success {
  padding: 3rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.15);
  text-align: center;
}

.success-icon { font-size: 3rem; margin-bottom: 1rem; }

.form-success h3 {
  font-family: var(--font-main);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.form-success p {
  color: rgba(255,255,255,0.5);
  font-size: 0.95rem;
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
#footer {
  background: var(--black);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-tagline {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-family: var(--font-main);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.3);
  text-decoration: none;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--white); }

.footer-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.05em;
}

.footer-motto {
  font-family: var(--font-main) !important;
  font-size: 0.7rem !important;
  color: rgba(255,255,255,0.15) !important;
  letter-spacing: 0.2em !important;
}

/* ════════════════════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
   ════════════════════════════════════════════════════════════ */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal-up    { transform: translateY(40px); }
.reveal-left  { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: none;
}

/* Staggered children */
.problem-card.reveal-up,
.route-card.reveal-up,
.impact-card.reveal-up,
.step.reveal-up {
  transition-delay: var(--delay, 0s);
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE TWEAKS
   ════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .solution-feature {
    grid-template-columns: 60px 1fr;
  }
  .feature-visual { display: none; }
}

@media (max-width: 600px) {
  .section { padding: 5rem 0; }
  .hero-stats { gap: 1rem; }
  .stat-divider { display: none; }
  .route-map-container { height: 200px; }
  .ring1 { width: 200px; height: 200px; }
  .ring2 { width: 280px; height: 280px; }
  .ring3 { display: none; }
}