:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --text: #122033;
  --muted: #4b5e75;
  --accent: #0a2342;
  --chip: #e8edf3;
  --shadow: 0 10px 22px rgba(11, 29, 53, 0.12);
  --card-radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Public Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.container {
  width: 100%;
  max-width: none;
  padding-inline: clamp(20px, 4vw, 84px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(10, 35, 66, 0.08);
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}

.brand {
  font-family: "Newsreader", serif;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.main-nav {
  display: flex;
  gap: 18px;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.hero {
  padding: 44px 0 22px;
}

.hero h1 {
  margin: 0;
  font-family: "Newsreader", serif;
  font-size: clamp(2rem, 4.1vw, 3.45rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 16px 0 24px;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.5;
  max-width: 780px;
}

.search-row input {
  width: min(880px, 100%);
  font-size: 1.03rem;
  padding: 17px 18px;
  border: none;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.search-row input:focus {
  outline: 2px solid rgba(10, 35, 66, 0.28);
  outline-offset: 1px;
}

.filters {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  border: none;
  border-radius: 999px;
  background: var(--chip);
  color: #364a61;
  padding: 9px 14px;
  font-weight: 700;
  cursor: pointer;
}

.chip.active {
  background: var(--accent);
  color: white;
}

.grid-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 8px 0 16px;
}

.grid-meta p {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.sort-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 600;
}

.sort-wrap select {
  border: none;
  border-radius: 8px;
  padding: 8px 10px;
  background: #edf2f8;
  color: #25364b;
  font-weight: 600;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  padding-bottom: 52px;
}

.city-card {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--card-radius);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow);
  transform: translateY(0) scale(1);
  transition: transform 180ms ease, box-shadow 220ms ease;
}

.city-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 14px 30px rgba(11, 29, 53, 0.2);
}

.city-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(0, 0, 0, 0.66), rgba(0, 0, 0, 0.08) 45%),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.24), rgba(0, 0, 0, 0.02) 28%);
}

.card-inner {
  position: absolute;
  inset: 0;
  z-index: 1;
  color: white;
  padding: 12px 12px 11px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.42);
}

.card-front {
  opacity: 1;
  transform: scale(1);
  transition: opacity 180ms ease, transform 180ms ease;
}

.card-link {
  color: inherit;
  text-decoration: none;
  display: block;
  width: 100%;
  height: 100%;
}

.card-top,
.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.rank-wrap {
  display: flex;
  align-items: flex-start;
}

.price-top {
  margin: 0;
  font-size: clamp(1.25rem, 1.55vw, 1.95rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-align: right;
  white-space: nowrap;
}

.rank {
  font-size: clamp(1.1rem, 1.25vw, 1.4rem);
  font-weight: 800;
  line-height: 1;
}

.card-center {
  text-align: center;
  align-self: center;
  margin-top: 10px;
}

.city-name {
  margin: 0;
  font-family: "Newsreader", serif;
  font-size: clamp(1.42rem, 1.5vw, 1.76rem);
  line-height: 1.03;
  font-weight: 800;
  max-width: 100%;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-wrap: pretty;
}

.city-location {
  margin: 5px 0 0;
  font-size: 0.86rem;
  font-weight: 700;
  opacity: 0.95;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metric-strip {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  line-height: 1.15;
  font-weight: 700;
  text-shadow: 0 2px 7px rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 8px;
}

.metric-left {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.metric-temp {
  margin-left: auto;
  white-space: nowrap;
  font-weight: 800;
}

.card-hover {
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  background:
    linear-gradient(to top, rgba(4, 10, 17, 0.94), rgba(4, 10, 17, 0.52) 64%, rgba(4, 10, 17, 0.72)),
    radial-gradient(circle at 20% 6%, rgba(255, 255, 255, 0.12), transparent 42%);
}

.city-card:hover .card-hover,
.city-card.force-hover .card-hover,
.card-link:focus-visible .card-hover {
  opacity: 1;
}

.city-card:hover .card-front,
.city-card.force-hover .card-front,
.card-link:focus-visible .card-front {
  opacity: 0;
  transform: scale(0.985);
}

.hover-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.hover-heart,
.hover-close {
  font-size: 1.55rem;
  line-height: 1;
  color: #f4f9ff;
  font-weight: 400;
}

.hover-city {
  margin: 0;
  font-family: "Newsreader", serif;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.05;
}

.hover-location {
  margin: 1px 0 8px;
  font-size: 0.76rem;
  color: #e1e8f2;
  font-weight: 600;
}

.hover-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.hover-row {
  display: grid;
  grid-template-columns: 82px 1fr 30px;
  align-items: center;
  gap: 5px;
}

.hover-label {
  font-size: 0.74rem;
  color: #f2f7fd;
  font-weight: 600;
}

.hover-track {
  width: 100%;
  height: 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  overflow: hidden;
}

.hover-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  transition: width 260ms ease;
}

.overall-fill,
.healthcare-fill,
.safety-fill {
  background: linear-gradient(90deg, #24d6a0, #1aa86b);
}

.cost-fill {
  background: linear-gradient(90deg, #67dbff, #2a9ed6);
}

.air-fill {
  background: linear-gradient(90deg, #ffd56a, #f7b934);
}

.hover-score {
  font-size: 0.72rem;
  font-weight: 800;
  text-align: right;
  color: #f6fbff;
}

.hover-cta {
  margin: 8px 0 0;
  font-size: 0.72rem;
  color: #d7e8fa;
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid rgba(10, 35, 66, 0.08);
  background: #fff;
}

.site-footer p {
  margin: 0;
  padding: 16px 0 26px;
  font-size: 0.9rem;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1280px) {
  .card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 1040px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .city-card {
    max-width: 430px;
  }

  .card-hover {
    display: none;
  }

  .metric-strip {
    font-size: 0.9rem;
  }
}

.city-detail {
  padding: 28px 0 54px;
}

.back-link {
  text-decoration: none;
  color: #2e4764;
  font-weight: 700;
}

.city-detail h1 {
  margin: 14px 0 2px;
  font-family: "Newsreader", serif;
  font-size: clamp(2rem, 5vw, 3rem);
}

.city-detail > p {
  margin: 0 0 18px;
  color: #4b5e75;
  font-weight: 600;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  gap: 12px;
}

.detail-card {
  background: white;
  border-radius: 12px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.detail-card h2 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: #52657d;
}

.detail-card p {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

@media (max-width: 820px) {
  .detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}