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

body {
  font-family: Inter, system-ui, sans-serif;
  background: black;
  color: #eaeaea;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -10;
}

.bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.4), rgba(0,0,0,.9));
}

main { padding-top: 120px; }

section { padding: 120px 10%; }

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 20px 8%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(12px);
  background: rgba(0,0,0,0.4);
  z-index: 1000;
}

.logo {
  font-weight: 600;
  letter-spacing: 1px;
}

nav a {
  margin-left: 25px;
  text-decoration: none;
  color: #bbb;
  font-size: 14px;
}

nav a.active,
nav a:hover {
  color: white;
}

/* HERO */
.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  margin-bottom: 20px;
}

.hero-sub { max-width: 600px; color: #b8c0cc; }

.profile {
  display: flex;
  gap: 12px;
  margin-top: 30px;
}

.profile img {
  width: 56px;
  border-radius: 50%;
}

/* INFO */
.info-panel {
  max-width: 800px;
  margin: auto;
  padding: 35px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(124,58,237,.4), rgba(56,189,248,.3));
}

.info-panel.small { padding: 25px; }

/* COMPARE */
.compare {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 60px;
}

.compare-images {
  display: flex;
  gap: 25px;
}

.compare-images img {
  max-width: 280px;
  border-radius: 12px;
}

/* POLLUTION MAP */
.pollution-map {
  height: 100vh;
  position: relative;
}

.pollution-map img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(1.15);
}

/* FIXED SOLUTIONS */
.solutions {
  padding-top: 140px;
  padding-bottom: 160px;
  text-align: center;
}

.solutions h2 {
  margin-bottom: 60px;
  font-size: 2.5rem;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap: 30px;
  max-width: 1000px;
  margin: auto;
}

.card {
  padding: 30px;
  background: rgba(255,255,255,.08);
  border-radius: 18px;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 40px;
  color: #777;
}

/* REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: .8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
/* CONTACT SECTION */
.contact-section {
  padding: 100px 20px;
  display: flex;
  justify-content: center;
}

.contact-card {
  width: 100%;
  max-width: 600px;
  padding: 40px 30px;
  border-radius: 20px;
  background: rgba(15, 20, 40, 0.85);
  backdrop-filter: blur(20px);
  box-shadow: 0 0 50px rgba(120, 160, 255, 0.25);
  text-align: center;
}

.contact-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 32px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #ffffff, #a0c4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.contact-subtitle {
  opacity: 0.85;
  margin-bottom: 30px;
}