/* ========== Base ========== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Roboto', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: #fff;
  background: #000;
  overflow-x: hidden;
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 20px;
  background: linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)), url('hybrid_car_bg.png') center/cover no-repeat;
  animation: fadeIn 0.8s ease both;
}
.hero h1 { font-size: clamp(2.2rem, 4vw, 3.5rem); margin: 0 0 10px; }
.hero p  { font-size: clamp(1rem, 2vw, 1.25rem); opacity: .9; }

/* ========== Forms & Buttons ========== */
form { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
input[type="email"] {
  padding: 12px 14px;
  border: none;
  border-radius: 8px;
  outline: none;
  min-width: 260px;
  max-width: 90vw;
}
button, .tech-button, .back-link {
  appearance: none;
  border: none;
  padding: 12px 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff9800, #ffb84d);
  color: #fff;
  font-weight: 600;
  letter-spacing: .2px;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .tech-button:hover, .back-link:hover {
  background: linear-gradient(135deg, #e68900, #ff9800);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,.35);
}

/* ========== Sections ========== */
.section { padding: 60px 20px; margin: 0 auto; max-width: 1200px; }
.section h2 { text-align: center; font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 20px; }

/* Two-column About */
.about { display: grid; grid-template-columns: repeat(1, 1fr); gap: 28px; align-items: center; }
.about img {
  width: 100%; border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* Video */
.video-container { text-align: center; }
.video-container video {
  width: 100%; max-width: 1000px; border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,.35);
}

/* Features Grid */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px;
  padding: 22px;
  text-align: center;
  transform: scale(.97);
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.feature-card:hover { transform: scale(1); box-shadow: 0 12px 28px rgba(0,0,0,.35); }
.feature-card h3 { margin-bottom: 8px; font-size: 1.2rem; }
.feature-card p { opacity: .9; }

/* Footer spacer */
.footer-space { text-align:center; padding: 40px 0 80px; }

/* Animations */
.hidden { opacity: 0; transform: translateY(16px); }
.show   { opacity: 1; transform: translateY(0); transition: opacity .6s ease, transform .6s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px);} to { opacity: 1; transform: none; } }

/* Responsive */
@media (max-width: 1024px) {
  .features { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .about { grid-template-columns: 1fr; }
  form { flex-direction: column; }
}