:root {
  --bg: #edf4ff;
  --panel: rgba(255, 255, 255, .78);
  --panel-solid: #ffffff;
  --text: #102033;
  --muted: #6c7a8f;
  --blue: #2778ff;
  --blue-dark: #0c48b8;
  --cyan: #38c7ff;
  --orange: #ff9d2e;
  --border: rgba(39, 120, 255, .16);
  --shadow: 0 24px 70px rgba(28, 80, 150, .16);
  --radius: 28px;
}

body.dark {
  --bg: #07111f;
  --panel: rgba(14, 29, 50, .78);
  --panel-solid: #0e1d32;
  --text: #f4f8ff;
  --muted: #aab8cc;
  --blue: #58a6ff;
  --blue-dark: #1d67d2;
  --cyan: #55d6ff;
  --orange: #ffb15c;
  --border: rgba(255, 255, 255, .12);
  --shadow: 0 24px 70px rgba(0, 0, 0, .32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 10%, rgba(39, 120, 255, .22), transparent 32%),
    radial-gradient(circle at 80% 20%, rgba(56, 199, 255, .20), transparent 30%),
    radial-gradient(circle at 65% 90%, rgba(255, 157, 46, .18), transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  transition: background .3s ease, color .3s ease;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1460px, calc(100% - 32px));
  margin: 16px auto;
  min-height: calc(100vh - 32px);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 18px;
}

.sidebar,
.main-content {
  background: var(--panel);
  backdrop-filter: blur(22px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.sidebar {
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-family: Montserrat, sans-serif;
  font-size: 1.4rem;
  font-weight: 900;
}

.brand span span {
  color: var(--blue);
}

.brand-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #fff;
  box-shadow: 0 16px 32px rgba(39, 120, 255, .24);
}

.search-box label,
.quick-cities p {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.input-group {
  height: 58px;
  display: grid;
  grid-template-columns: 42px 1fr 44px;
  align-items: center;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 8px 0 16px;
}

.input-group i {
  color: var(--blue);
}

.input-group input {
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}

.input-group button {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 14px;
  background: var(--blue);
  color: #fff;
}

.location-btn {
  border: 0;
  border-radius: 20px;
  padding: 16px 18px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: #fff;
  font-weight: 900;
  box-shadow: 0 18px 35px rgba(39, 120, 255, .22);
}

.quick-cities {
  display: grid;
  gap: 10px;
}

.quick-cities button {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 13px 14px;
  color: var(--text);
  background: var(--panel-solid);
  text-align: left;
  font-weight: 800;
  transition: .25s ease;
}

.quick-cities button:hover {
  transform: translateX(5px);
  border-color: var(--blue);
  color: var(--blue);
}

.sidebar-note {
  margin-top: auto;
  display: flex;
  gap: 12px;
  padding: 16px;
  border-radius: 20px;
  background: rgba(39, 120, 255, .09);
  border: 1px solid var(--border);
  color: var(--muted);
  line-height: 1.55;
}

.sidebar-note i {
  color: var(--blue);
  margin-top: 4px;
}

.sidebar-note p {
  margin: 0;
  font-size: .92rem;
}

.main-content {
  border-radius: var(--radius);
  padding: 28px;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.eyebrow {
  color: var(--blue);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
}

.topbar h1 {
  margin: 6px 0 0;
  font-family: Montserrat, sans-serif;
  font-size: clamp(1.8rem, 4vw, 3.6rem);
  line-height: 1;
}

.theme-toggle {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel-solid);
  color: var(--blue);
  font-size: 1.1rem;
}

.status-card {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 120px;
  border: 1px dashed var(--border);
  border-radius: 24px;
  color: var(--muted);
  font-weight: 800;
}

.status-card.error {
  color: #ff4d4d;
  background: rgba(255, 77, 77, .08);
}

.hidden {
  display: none !important;
}

.weather-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr);
  gap: 18px;
  margin-bottom: 18px;
}

.weather-main-card,
.forecast-panel,
.hourly-panel,
.detail-card {
  background: var(--panel-solid);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: 0 16px 45px rgba(28, 80, 150, .10);
}

.weather-main-card {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(39, 120, 255, .95), rgba(56, 199, 255, .78)),
    var(--blue);
  color: #fff;
}

.weather-main-card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -80px;
  bottom: -90px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .18);
}

.weather-location {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.weather-location span {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .18);
  font-size: .8rem;
  font-weight: 900;
  text-transform: uppercase;
}

.weather-location h2 {
  margin: 18px 0 8px;
  font-family: Montserrat, sans-serif;
  font-size: clamp(2rem, 5vw, 4.6rem);
  line-height: .92;
}

.weather-location p {
  margin: 0;
  opacity: .85;
  font-weight: 600;
}

.weather-icon {
  font-size: clamp(4rem, 10vw, 7rem);
  filter: drop-shadow(0 20px 25px rgba(0, 0, 0, .18));
}

.temperature-row {
  position: absolute;
  z-index: 1;
  left: 30px;
  right: 30px;
  bottom: 30px;
  display: flex;
  align-items: flex-end;
  gap: 22px;
}

.temperature-row strong {
  display: block;
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: .75;
  letter-spacing: -6px;
}

.temperature-row h3 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.temperature-row p {
  margin: 0;
  opacity: .85;
}

.weather-details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.detail-card {
  padding: 22px;
}

.detail-card i {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  margin-bottom: 18px;
}

.detail-card span {
  color: var(--muted);
  font-weight: 800;
  font-size: .84rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.detail-card strong {
  display: block;
  margin-top: 8px;
  font-size: 1.65rem;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 18px;
}

.forecast-panel,
.hourly-panel {
  padding: 24px;
}

.section-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.section-title span {
  color: var(--blue);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.section-title h2 {
  margin: 6px 0 0;
  font-family: Montserrat, sans-serif;
  font-size: 1.45rem;
}

.section-title i {
  color: var(--orange);
  font-size: 1.5rem;
}

.forecast-list {
  display: grid;
  gap: 12px;
}

.forecast-day {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(39, 120, 255, .07);
}

.forecast-day div:first-child {
  display: flex;
  align-items: center;
  gap: 12px;
}

.forecast-day .day-icon {
  font-size: 1.55rem;
}

.forecast-day strong {
  display: block;
}

.forecast-day span {
  color: var(--muted);
  font-size: .88rem;
}

.forecast-day .max {
  color: var(--orange);
  font-weight: 900;
}

.forecast-day .min {
  color: var(--blue);
  font-weight: 900;
}

.hourly-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.hour-card {
  min-width: 106px;
  padding: 16px;
  border-radius: 20px;
  background: rgba(39, 120, 255, .07);
  text-align: center;
}

.hour-card span {
  color: var(--muted);
  font-weight: 800;
  font-size: .86rem;
}

.hour-card .hour-icon {
  font-size: 2rem;
  margin: 12px 0;
}

.hour-card strong {
  font-size: 1.35rem;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
  }

  .quick-cities {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100% - 20px, 1460px);
    margin: 10px auto;
  }

  .weather-hero,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .quick-cities {
    grid-template-columns: repeat(2, 1fr);
  }

  .topbar {
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .sidebar,
  .main-content {
    padding: 20px;
    border-radius: 22px;
  }

  .quick-cities {
    grid-template-columns: 1fr;
  }

  .weather-details-grid {
    grid-template-columns: 1fr;
  }

  .weather-main-card {
    min-height: 420px;
  }

  .temperature-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .forecast-day {
    grid-template-columns: 1fr 52px 52px;
  }
}