:root {
  --evo-teal: #3f9fad;
  --evo-teal-bright: #45aebd;
  --evo-teal-deep: #15859b;
  --evo-navy: #032039;
  --evo-navy-deep: #021220;
  --white: #ffffff;
  --text-muted: rgba(226, 240, 244, 0.82);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color: var(--white);
  background: var(--evo-navy-deep);
}

.topbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  display: block;
  height: 48px;
  width: auto;
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--evo-navy-deep);
}

.slider {
  position: absolute;
  inset: 0;
}

.slide {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  opacity: 0;
  will-change: opacity, transform;
}

.slide-1 {
  background-image: url("assets/slide-2.jpg");
  animation:
    slideFade 16s linear infinite,
    zoomIn 16s ease-in-out infinite;
}

.slide-2 {
  background-image: url("assets/slide-3.jpg");
  animation:
    slideFade 16s linear infinite,
    zoomOut 16s ease-in-out infinite;
  animation-delay: 8s, 8s;
}

@keyframes slideFade {
  0% { opacity: 0; }
  5% { opacity: 1; }
  50% { opacity: 1; }
  62.5% { opacity: 0; }
  100% { opacity: 0; }
}

@keyframes zoomIn {
  0% { transform: scale(1); }
  62.5% { transform: scale(1.1); }
  100% { transform: scale(1.1); }
}

@keyframes zoomOut {
  0% { transform: scale(1.1); }
  62.5% { transform: scale(1); }
  100% { transform: scale(1); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 18, 32, 0.88) 0%, rgba(3, 32, 57, 0.55) 42%, rgba(3, 32, 57, 0.18) 75%, rgba(3, 32, 57, 0) 100%),
    linear-gradient(0deg, rgba(2, 18, 32, 0.72) 0%, rgba(2, 18, 32, 0) 42%),
    radial-gradient(ellipse 60% 55% at 82% 30%, rgba(63, 159, 173, 0.22) 0%, rgba(63, 159, 173, 0) 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 0 48px 96px;
  max-width: 720px;
}

.hero-content h1 {
  margin: 0 0 18px;
  font-size: clamp(2.6rem, 6vw, 4.9rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.hero-content h1 em {
  font-style: normal;
  color: var(--evo-teal-bright);
}

.hero-content p {
  margin: 0 0 36px;
  max-width: 34rem;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.55;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  background: var(--evo-teal-bright);
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(21, 133, 155, 0.35);
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  background: var(--evo-teal-deep);
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(21, 133, 155, 0.45);
}

.btn:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

.btn-cta {
  padding: 20px 46px;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

@media (max-width: 640px) {
  .topbar {
    padding: 16px 20px;
  }

  .brand img {
    height: 38px;
  }

  .hero-content {
    padding: 0 20px 64px;
  }

  .btn-cta {
    padding: 17px 34px;
    font-size: 1rem;
  }
}