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

:root {
  --bg: #FFFFFF;
  --bg-alt: #F5F5F5;
  --fg: #111111;
  --fg-muted: #888888;
  --border: #000000;
  --card-bg: #FFFFFF;
  --font: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #111111;
  --bg-alt: #1a1a1a;
  --fg: #FFFFFF;
  --fg-muted: #888888;
  --border: #FFFFFF;
  --card-bg: #111111;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  transition: background 0.15s, color 0.15s;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  margin-bottom: 4px;
}

.big-number {
  font-size: 6rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
}

.temp-unit {
  font-size: 2rem;
  font-weight: 400;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 48px;
}
.logo {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  min-width: 92px;
}
.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.btn {
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  padding: 8px 16px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn:hover,
.btn:focus-visible {
  background: var(--fg);
  color: var(--bg);
}
.btn--filled {
  background: var(--fg);
  color: var(--bg);
}
.btn--filled:hover,
.btn--filled:focus-visible {
  background: transparent;
  color: var(--fg);
}

#langBtn { min-width: 54px; }
#geoBtn { min-width: 124px; }
#unitBtn { min-width: 64px; }
#themeBtn { min-width: 96px; }

.search-wrapper {
  position: relative;
  flex: 1;
  max-width: 360px;
  min-width: 200px;
}
.search-input {
  font-family: var(--font);
  font-size: 0.8125rem;
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  outline: none;
  letter-spacing: 0.02em;
}
.search-input::placeholder { color: var(--fg-muted); }
.search-input:focus-visible {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--fg);
}
.autocomplete {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-top: none;
  z-index: 100;
  display: none;
}
.autocomplete.active { display: block; }
.autocomplete-item {
  padding: 8px 12px;
  font-size: 0.8125rem;
  cursor: pointer;
  border-bottom: 1px solid var(--bg-alt);
}
.autocomplete-item:hover,
.autocomplete-item.active {
  background: var(--bg-alt);
}
.autocomplete-item:last-child { border-bottom: none; }

.card {
  border: 1px solid var(--border);
  padding: 24px;
  background: var(--card-bg);
}

.main-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0;
  margin-top: -1px;
  min-height: 760px;
  align-content: start;
  content-visibility: auto;
  contain-intrinsic-size: 760px;
  position: relative;
}

.main-grid::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  border-top: 1px solid var(--border);
  pointer-events: none;
}
.main-grid > * {
  margin-top: -1px;
  margin-left: -1px;
}
.main-grid { padding-left: 1px; }

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.current-weather {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}
.current-weather .temp-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.current-weather .weather-icon svg {
  width: 72px;
  height: 72px;
}
.current-weather .description {
  font-size: 1.125rem;
  font-weight: 500;
  margin-top: 8px;
}
.current-weather .city-name {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.current-weather .date-time {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
}
.stat-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--bg-alt);
}
.stat-item:not(:nth-child(3n+1)) { padding-left: 12px; border-left: 1px solid var(--bg-alt); }
.stat-item:not(:nth-child(3n)) { padding-right: 12px; }
.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sun-times {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
}
.sun-wrap { margin-top: 20px; }
.sun-time-end { text-align: right; }
.sun-time-value {
  font-size: 1.25rem;
  font-weight: 700;
}
.sun-progress-track {
  width: 100%;
  height: 3px;
  background: var(--bg-alt);
  position: relative;
  margin-top: 12px;
}
.sun-progress-bar {
  height: 100%;
  background: var(--fg);
  width: 0%;
  transition: width 1s ease;
}
.sun-progress-dot {
  width: 10px;
  height: 10px;
  background: var(--fg);
  border-radius: 50%;
  position: absolute;
  top: -3.5px;
  left: 0%;
  transition: left 1s ease;
}

.hourly-scroll {
  display: flex;
  overflow-x: auto;
  gap: 0;
  -ms-overflow-style: none;
  scrollbar-width: thin;
}
.hourly-scroll::-webkit-scrollbar { height: 2px; }
.hourly-scroll::-webkit-scrollbar-thumb { background: var(--fg-muted); }
.hourly-item {
  min-width: 80px;
  padding: 16px 12px;
  text-align: center;
  border-right: 1px solid var(--bg-alt);
  flex-shrink: 0;
}
.hourly-item:last-child { border-right: none; }
.hourly-time {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  margin-bottom: 8px;
}
.hourly-temp {
  font-size: 1.125rem;
  font-weight: 700;
}
.hourly-icon svg {
  width: 28px;
  height: 28px;
  margin: 6px 0;
}
.hourly-precip {
  font-size: 0.625rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.forecast-table {
  width: 100%;
  border-collapse: collapse;
}
.forecast-table th {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-align: left;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.forecast-table td {
  padding: 10px 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--bg-alt);
  vertical-align: middle;
}
.forecast-table .day-name {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8125rem;
}
.forecast-table .temp-max { font-weight: 700; }
.forecast-table .temp-min { color: var(--fg-muted); }
.forecast-table svg { width: 24px; height: 24px; vertical-align: middle; }

.chart-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.chart-container svg {
  display: block;
  width: 100%;
  min-width: 500px;
  height: 200px;
}
.chart-line { fill: none; stroke: var(--fg); stroke-width: 2; }
.chart-dot { fill: var(--fg); }
.chart-grid-line { stroke: var(--bg-alt); stroke-width: 1; }
.chart-label {
  font-family: var(--font);
  font-size: 10px;
  fill: var(--fg-muted);
  text-anchor: middle;
}
.chart-value-label {
  font-family: var(--font);
  font-size: 9px;
  fill: var(--fg);
  text-anchor: middle;
  font-weight: 600;
}

.aqi-value {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.aqi-desc {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}
.aqi-bar-track {
  width: 100%;
  height: 4px;
  background: var(--bg-alt);
  margin-top: 16px;
}
.aqi-bar-fill {
  height: 100%;
  background: var(--fg);
  transition: width 0.8s ease;
}
.aqi-note { margin-top: 12px; }

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  margin-top: -1px;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
footer a {
  color: var(--fg);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
footer a:hover { text-decoration: underline; }
footer .footer-text {
  font-size: 0.6875rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.loading-text {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 40px 0;
  text-align: center;
}

.skeleton-card {
  border: 1px solid var(--border);
  background: var(--card-bg);
  padding: 24px;
}

.skeleton-line {
  width: 100%;
  height: 12px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--bg-alt), var(--card-bg), var(--bg-alt));
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.2s linear infinite;
}

.skeleton-line--lg {
  height: 24px;
  width: 55%;
}

.skeleton-line--md {
  width: 70%;
}

.skeleton-row {
  display: grid;
  gap: 10px;
}

.skeleton-spacer-24 {
  height: 24px;
}

.skeleton-h-280 {
  min-height: 280px;
}

.skeleton-h-210 {
  min-height: 210px;
}

.skeleton-h-170 {
  min-height: 170px;
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.error-box {
  display: grid;
  gap: 12px;
  justify-items: center;
}
.error-box .error-message {
  font-size: 0.875rem;
  text-transform: none;
  letter-spacing: normal;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 768px) {
  .main-grid > * { grid-column: span 12; }
  .main-grid { min-height: 980px; }
  .main-grid { contain-intrinsic-size: 980px; }
  .big-number { font-size: 4rem; }
  .header-controls { flex-wrap: wrap; }
  .search-wrapper { max-width: 100%; min-width: 0; order: 10; flex-basis: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .current-weather { min-height: auto; }
  .chart-container {
    margin: 0 -4px;
    padding: 0 4px 6px;
  }
  .chart-container svg {
    min-width: 760px;
    height: 240px;
  }
  .chart-label { font-size: 12px; }
  .chart-value-label { font-size: 11px; }
  footer .container { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .main-grid { min-height: 860px; }
  .main-grid { contain-intrinsic-size: 860px; }
  .big-number { font-size: 3.5rem; }
  .card { padding: 16px; }
}