:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1d4ed8 0%, var(--bg) 55%);
}

.ad-rail {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 160px;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(2, 6, 23, 0.35);
}

.ad-rail-left {
  left: 0;
}

.ad-rail-right {
  right: 0;
}

.ad-slot {
  width: 100%;
  min-height: 600px;
  background: rgba(15, 23, 42, 0.45);
  border: 1px dashed rgba(148, 163, 184, 0.35);
  border-radius: 12px;
}

.app-shell {
  max-width: 960px;
  margin: 0 170px;
  padding: 2rem 1rem 3rem;
}

h1,
h2 {
  margin: 0;
}

.subtitle,
.helper-text {
  color: var(--muted);
}

.local-date-display {
  margin: 0;
  color: var(--text);
  font-weight: 600;
  text-align: center;
}

.controller-card,
.cities-panel {
  background: rgba(15, 23, 42, 0.76);
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 16px;
  padding: 1rem;
  margin-top: 1rem;
  backdrop-filter: blur(4px);
}

.field-row {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.field-row:last-child {
  margin-bottom: 0;
}

.date-controls {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 0.5rem;
  align-items: start;
}

.date-controls input[type='date'] {
  min-width: 180px;
}

.date-input-stack {
  display: grid;
  justify-items: center;
  gap: 0.35rem;
}

.date-input-with-picker {
  position: relative;
  width: 100%;
}

.date-input-with-picker input[type='date'] {
  padding-right: 2.25rem;
}

.date-picker-trigger {
  position: absolute;
  right: 0.35rem;
  top: 50%;
  transform: translateY(-50%);
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 7px;
  background: rgba(15, 23, 42, 0.95);
  color: var(--text);
  font-size: 0.85rem;
  line-height: 1;
  padding: 0.26rem 0.38rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease;
}

.date-input-with-picker:focus-within .date-picker-trigger {
  opacity: 1;
  pointer-events: auto;
}

.date-input-with-picker.calendar-visible .date-picker-trigger {
  opacity: 1;
  pointer-events: auto;
}

.inline-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

select,
input[type='date'],
.city-input {
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
  background: rgba(15, 23, 42, 0.75);
  color: var(--text);
}

.city-input,
input[type='date'] {
  width: 100%;
}

.day-shift {
  border: 1px solid rgba(56, 189, 248, 0.6);
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--text);
  font-weight: 600;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}

.day-shift:hover {
  background: rgba(56, 189, 248, 0.22);
}

input[type='range'] {
  width: 100%;
  accent-color: #22c55e;
}

.slider-scale {
  position: relative;
  min-height: 2.9rem;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.slider-marker {
  position: absolute;
  left: var(--pos);
  transform: translateX(-50%);
  top: 0.8rem;
  white-space: nowrap;
}

.slider-marker::before {
  content: '';
  position: absolute;
  top: -0.65rem;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 0.45rem;
  background: rgba(148, 163, 184, 0.75);
}

.slider-marker:first-child {
  transform: translateX(0);
}

.slider-marker:first-child::before {
  left: 0;
  transform: none;
}

.slider-marker-end {
  left: auto;
  right: 0;
  transform: none;
  text-align: right;
}

.slider-marker-end::before {
  left: auto;
  right: 0;
  transform: none;
}

#city-list {
  display: grid;
  gap: 0.8rem;
  margin: 1rem 0;
}

.city-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  border-radius: 12px;
  border: 1px solid rgba(226, 232, 240, 0.25);
  padding: 0.8rem;
  transition: background-color 220ms ease;
}

.city-card.office-hours {
  background-color: rgba(22, 101, 52, 0.45);
}

.city-card.shoulder-hours {
  background-color: rgba(161, 98, 7, 0.45);
}

.city-card.sleep-time {
  background-color: rgba(153, 27, 27, 0.5);
}

.city-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  grid-column: 1 / -1;
}

.card-actions {
  display: flex;
  gap: 0.45rem;
}

.pin-city,
.remove-city {
  border: 1px solid rgba(226, 232, 240, 0.35);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.45);
  color: var(--text);
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}

.pin-city:hover,
.remove-city:hover {
  background: rgba(148, 163, 184, 0.18);
}

.city-card[data-pinned='true'] .pin-city {
  border-color: rgba(250, 204, 21, 0.7);
  color: #fde68a;
}

.city-input-wrap,
.city-time-wrap {
  display: grid;
  gap: 0.45rem;
}

.city-zone,
.city-datetime {
  margin: 0;
}

#add-city {
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #0f172a;
  font-weight: 700;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
}

@media (max-width: 900px) {
  .ad-rail {
    display: none;
  }

  .app-shell {
    margin: 0 auto;
  }

  .date-controls {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .date-controls {
    grid-template-columns: 1fr;
  }

  .slider-scale {
    min-height: 4.6rem;
  }

  .slider-marker {
    font-size: 0.68rem;
  }

  .slider-marker:nth-child(even) {
    top: 2.3rem;
  }

  .slider-marker:nth-child(even)::before {
    top: -2.15rem;
    height: 1.95rem;
  }

  .city-card {
    grid-template-columns: 1fr;
  }
}