/* Home page only. Every rule starts with body.home so other pages are untouched. */

body.home {
  background: #2a2f55;
  min-height: 100vh;
}

/* ---------- Photo background ---------- */
.sky {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: #2a2f55;
}

/* Phones and portrait tablets: the photo fills the screen, with a very slow zoom */
.sky::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("images/lagos-bg.jpg") center 70% / cover no-repeat;
  transform-origin: 50% 70%;
  animation: slowzoom 40s ease-in-out infinite alternate;
}

/* The sharp centred photo is only used on wide screens */
.sky-photo { display: none; }

/* A soft dark tint so white text stays easy to read */
.sky::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 22, 58, 0.55) 0%, rgba(12, 22, 58, 0.15) 45%, rgba(12, 22, 58, 0.35) 100%);
}

@keyframes slowzoom {
  from { transform: scale(1); }
  to { transform: scale(1.1); }
}

/* PCs and landscape tablets: blurred copy fills the sides, sharp photo in the middle */
@media (min-aspect-ratio: 1/1) {
  .sky::before {
    inset: -40px;
    background-position: center;
    filter: blur(26px);
  }
  .sky-photo {
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: calc(100vh * 0.667);
    max-width: 100%;
    transform: translateX(-50%);
    background: url("images/lagos-bg.jpg") center / cover no-repeat;
    -webkit-mask-image: linear-gradient(to right, transparent 0, #000 14%, #000 86%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0, #000 14%, #000 86%, transparent 100%);
  }
}

/* ---------- Header ---------- */
body.home header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.15);
}
body.home header h1 {
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* ---------- Hero text ---------- */
.hero {
  max-width: 600px;
  margin: 0 auto;
  padding: 28px 16px 0;
  color: #fff;
  animation: rise 0.7s ease both;
}
.hero h2 {
  margin: 0 0 8px;
  font-size: 30px;
  line-height: 1.15;
  font-weight: 800;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}
.hero p {
  margin: 0;
  font-size: 16px;
  opacity: 0.95;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
}

/* ---------- City cards ---------- */
body.home main h2.title {
  color: #fff;
  font-size: 22px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

body.home .tile {
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-top: 5px solid #ff8f6b;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  animation: rise 0.6s ease both;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
body.home .tile small { font-weight: 500; }

body.home .tile:nth-child(1) { border-top-color: #ff8f6b; animation-delay: 0.10s; }
body.home .tile:nth-child(2) { border-top-color: #4f8cff; animation-delay: 0.20s; }
body.home .tile:nth-child(3) { border-top-color: #2fbf71; animation-delay: 0.30s; }
body.home .tile:nth-child(4) { border-top-color: #a35bff; animation-delay: 0.40s; }
body.home .tile:nth-child(n+5) { animation-delay: 0.5s; }

body.home .tile:hover,
body.home .tile:active {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.32);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- GIFs ---------- */
body.home .gif {
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.3);
  animation: rise 0.8s ease both;
}

/* ---------- Small phones ---------- */
@media (max-width: 360px) {
  .hero h2 { font-size: 25px; }
  body.home .tile { font-size: 16px; padding: 18px 8px; }
}

/* ---------- Tablets ---------- */
@media (min-width: 768px) {
  body.home main,
  .hero { max-width: 760px; }
  .hero { padding-top: 44px; }
  .hero h2 { font-size: 42px; }
  .hero p { font-size: 18px; }
  body.home main h2.title { font-size: 26px; }
  body.home .tile { padding: 30px 14px; font-size: 19px; }
}

/* ---------- PCs and wide screens ---------- */
@media (min-width: 1000px) {
  body.home main,
  .hero { max-width: 960px; }
  body.home .tiles { grid-template-columns: repeat(4, 1fr); gap: 16px; }
}

/* People who turn off motion on their phone get a still page */
@media (prefers-reduced-motion: reduce) {
  .sky::before, .hero, body.home .tile, body.home .gif { animation: none; }
}