:root {
  /* Core palette */
  --bg: #101014;
  --surface: #1b1a1d;
  --surface-2: #181818;
  --surface-3: #1d1d1f;
  --surface-4: #17171a;
  --surface-open: #d6e4ee;

  --text: #ffffff;
  --text-dark: #111111;
  --text-muted: rgba(255, 255, 255, 0.52);
  --text-muted-2: rgba(255, 255, 255, 0.48);
  --text-muted-3: rgba(255, 255, 255, 0.42);
  --text-muted-4: rgba(255, 255, 255, 0.28);
  --text-strong-muted: rgba(255, 255, 255, 0.82);
  --text-soft: rgba(255, 255, 255, 0.68);
  --text-dark-muted: rgba(17, 17, 17, 0.7);

  --accent-soft: #dfeaf3;
  --accent-muted: #7c8ea3;

  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.06);
  --line-strong: rgba(255, 255, 255, 0.1);

  --shadow-lg: 0 18px 36px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 18px 50px rgba(0, 0, 0, 0.35);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.03);

  --radius-sm: 16px;
  --radius-md: 18px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --radius-2xl: 30px;
  --radius-3xl: 36px;
  --radius-full: 9999px;

  --collapsed-width: 120px;
  --expanded-width: 255px;
  --pill-height: 220px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--text);
}

/* ---------- Utilities ---------- */

.hidden {
  display: none;
}

.left-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section-header {
  margin-bottom: 16px;
}

.section-title {
  margin: 0;
  font-size: 24px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.section-subtitle {
  margin: 8px 0 0 0;
  font-size: 13px;
  line-height: 1.35;
  color: var(--text-muted);
}

/* ---------- Topbar / Navbar ---------- */

.topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  min-height: 68px;
}

.topbar > :first-child {
  justify-self: start;
}

.topbar > :nth-child(2) {
  justify-self: center;
}

.topbar > :last-child {
  justify-self: end;
}

/* Left - Location */
.location-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 240px;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 10px 0;
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: opacity 180ms ease;
}

.location-trigger:hover {
  opacity: 0.9;
}

.location-trigger:focus-visible {
  outline: 2px solid rgba(223, 234, 243, 0.85);
  outline-offset: 4px;
}

.location-left {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.topbar-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2.2;
  flex-shrink: 0;
  color: rgba(255, 255, 255, 0.88);
}

.location-label {
  font-size: 16px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.86);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chevron {
  width: 15px;
  height: 15px;
  color: var(--text-soft);
  transition: transform 220ms var(--ease);
}

.location-trigger.is-open .chevron {
  transform: rotate(180deg);
}

.location-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 250px;
  background: rgba(28, 28, 28, 0.96);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(14px);
  z-index: 50;
}

.location-option {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text-strong-muted);
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.location-option:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.location-option.is-selected {
  background: rgba(223, 234, 243, 0.1);
  color: var(--text);
}

/* Center - Title */
.topbar-title-wrap {
  text-align: center;
  user-select: none;
}

.topbar-title {
  margin: 0;
  font-size: 18px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.topbar-subtitle {
  margin: 4px 0 0 0;
  font-size: 12px;
  line-height: 1;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.5);
}

/* Right - Theme Toggle */
.theme-toggle {
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.theme-toggle:focus-visible {
  outline: 2px solid rgba(223, 234, 243, 0.85);
  outline-offset: 4px;
  border-radius: var(--radius-full);
}

.theme-track {
  position: relative;
  width: 86px;
  height: 46px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  display: block;
}

.theme-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  transition: transform 280ms var(--ease);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.28);
}

.theme-icon-wrap {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 2;
}

.theme-icon-left {
  left: 3px;
}

.theme-icon-right {
  right: 3px;
}

.theme-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
  transition: color 240ms ease, opacity 240ms ease;
}

.theme-toggle[data-mode="light"] .theme-thumb {
  transform: translateX(0);
}

.theme-toggle[data-mode="dark"] .theme-thumb {
  transform: translateX(40px);
}

.theme-toggle[data-mode="light"] .theme-icon-left .theme-icon {
  color: var(--text-dark);
  opacity: 1;
}

.theme-toggle[data-mode="light"] .theme-icon-right .theme-icon {
  color: rgba(255, 255, 255, 0.75);
  opacity: 0.9;
}

.theme-toggle[data-mode="dark"] .theme-icon-left .theme-icon {
  color: rgba(255, 255, 255, 0.75);
  opacity: 0.9;
}

.theme-toggle[data-mode="dark"] .theme-icon-right .theme-icon {
  color: var(--text-dark);
  opacity: 1;
}

/* ---------- Forecast ---------- */

.weather-shell {
  width: 100%;
}

.weather-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.weather-tabs {
  display: flex;
  align-items: center;
  gap: 24px;
}

.top-tab {
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.48);
  font-size: 20px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.top-tab.active {
  color: var(--text);
}

.mode-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
}

.mode-btn {
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.mode-btn.active {
  background: var(--surface-open);
  color: var(--text-dark);
}

.forecast-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.forecast-row::-webkit-scrollbar {
  height: 8px;
}

.forecast-row::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: var(--radius-full);
}

.forecast-pill {
  position: relative;
  width: var(--collapsed-width);
  min-width: var(--collapsed-width);
  height: var(--pill-height);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  color: var(--text);
  overflow: hidden;
  cursor: pointer;
  flex-shrink: 0;
  padding: 18px 14px;
  transition:
    width 420ms var(--ease),
    min-width 420ms var(--ease),
    background 240ms ease,
    color 240ms ease,
    transform 180ms ease;
}

.forecast-pill:hover {
  transform: translateY(-1px);
}

.forecast-pill.is-active {
  width: var(--expanded-width);
  min-width: var(--expanded-width);
  background: var(--surface-open);
  color: var(--text-dark);
}

/* Closed state */
.pill-closed {
  height: 86%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  opacity: 1;
  transition: opacity 160ms ease;
}

.pill-day {
  width: 100%;
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
}

.unit-small {
  font-size: 16px;
  line-height: 1;
}

.temp-small {
  width: 100%;
  text-align: center;
  font-size: 32px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 4px;
}

/* Open state */
.pill-open {
  position: absolute;
  inset: 0;
  padding: 18px 16px 16px 16px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition:
    opacity 180ms ease,
    transform 320ms var(--ease);
}

.forecast-pill.is-active .pill-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.forecast-pill.is-active .pill-closed {
  opacity: 0;
  pointer-events: none;
}

.pill-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.pill-day-open {
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
}

.pill-time {
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.pill-main-open {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 8px;
  margin-bottom: 18px;
}

.temp-large {
  font-size: 58px;
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.unit-large {
  font-size: 24px;
  line-height: 1;
}

.pill-details {
  margin-top: auto;
}

.pill-details p {
  margin: 0 0 5px 0;
  font-size: 11px;
  line-height: 1.25;
  color: var(--text-dark-muted);
  white-space: nowrap;
}

.pill-details-output {
  display: flex;
  justify-content: space-between;
}

.forecast-pill:focus-visible {
  outline: 2px solid var(--surface-open);
  outline-offset: 3px;
}

/* ---------- Comparison / Chart ---------- */

.chart-pill {
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.04), transparent 35%),
    linear-gradient(180deg, var(--surface) 0%, var(--surface) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-3xl);
  padding: 24px 24px 20px 24px;
  min-height: 460px;
  box-shadow: var(--shadow-inset);
}

.chart-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.chart-title {
  margin: 0;
  font-size: 18px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.chart-caption {
  margin: 8px 0 0 0;
  font-size: 13px;
  line-height: 1.3;
  color: var(--text-muted-2);
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.72);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  display: inline-block;
}

.legend-dot-actual {
  background: var(--accent-soft);
  box-shadow: 0 0 12px rgba(223, 234, 243, 0.35);
}

.legend-dot-predicted {
  background: var(--accent-muted);
  box-shadow: 0 0 12px rgba(124, 142, 163, 0.28);
}

.chart-wrap {
  position: relative;
  width: 100%;
  height: 360px;
}

.chart-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ---------- Metrics ---------- */

.metrics-grid-compact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.metric-card-compact {
  min-height: 220px;
  gap: 24px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, var(--surface), transparent),
    var(--surface);
  border: 1px solid var(--line-soft);
  padding: 18px 18px 16px 18px;
  display: flex;
  flex-direction: column;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.metric-card-compact:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lg);
}

.metric-band {
  text-align: center;
  font-size: 15px;
  line-height: 1;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.82);
}

.metric-inline-row {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  align-items: center;
  gap: 14px;
}

.metric-inline-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.metric-inline-label {
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  color: var(--accent-soft);
  margin-bottom: 10px;
}

.metric-inline-value {
  font-size: 2.5rem;
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--text);
  white-space: nowrap;
}

.metric-inline-divider {
  width: 1px;
  height: 62px;
  background: var(--line);
  justify-self: center;
}

.metric-delta-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  align-self: center;
  line-height: 1;
  font-weight: 700;
}

.metric-delta-negative {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.82);
}

.metric-compact-description {
  text-align: center;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--text-muted-2);
}

/* ---------- Solar Output ---------- */

.solar-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solar-input-output {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.solar-card-title {
  margin: 0;
  font-size: 18px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.solar-card-subtitle {
  margin: 8px 0 0 0;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--text-muted-2);
}

.solar-form-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.solar-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solar-label {
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.76);
}

.solar-input-wrap {
  position: relative;
}

.solar-input {
  width: 100%;
  height: 52px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  padding: 0 46px 0 16px;
  font-size: 15px;
  font-weight: 600;
  outline: none;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.solar-input::placeholder {
  color: var(--text-muted-4);
}

.solar-input:focus {
  border-color: rgba(223, 234, 243, 0.24);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(223, 234, 243, 0.06);
}

.solar-input-unit {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted-3);
  pointer-events: none;
}

.solar-estimate-block {
  padding: 16px 16px 14px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.solar-estimate-label {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.62);
}

.solar-estimate-value-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.solar-estimate-value {
  font-size: 2.4rem;
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--text);
}

.solar-estimate-unit {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-soft);
}

.solar-estimate-note {
  margin: 10px 0 0 0;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.46);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  :root {
    --collapsed-width: 88px;
    --expanded-width: 230px;
    --pill-height: 205px;
  }

  .top-tab {
    font-size: 18px;
  }

  .topbar {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .topbar > :first-child,
  .topbar > :nth-child(2),
  .topbar > :last-child {
    justify-self: stretch;
  }

  .topbar-title-wrap {
    order: -1;
  }

  .theme-toggle {
    justify-self: end;
  }

  .location-trigger {
    min-width: 0;
    width: 100%;
  }

  .metrics-grid-compact {
    grid-template-columns: 1fr;
  }

  .solar-form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 800px) {
  .chart-pill {
    padding: 20px 18px 18px 18px;
    border-radius: var(--radius-2xl);
    min-height: 400px;
  }

  .chart-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .chart-wrap {
    height: 300px;
  }
}