:root {
  --purple:     #5C3EE8;
  --purple-mid: #7C5CF0;
  --purple-lt:  #E9D5FF;
  --slate:      #64748B;
  --dark:       #0F0E17;
  --dark-2:     #1E1B2E;
  --mid:        #374151;
  --light:      #F8F7FF;
  --white:      #FFFFFF;
  --border:     #E9E5F8;
  --border-md:  #D1CBF5;

  --radius-sm: 2px;
  --radius-md: 6px;

  --font: 'Geist', system-ui, sans-serif;

  --dur:  150ms;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }
a { text-decoration: none; color: inherit; }

:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 2px;
}

body {
  margin: 0;
  background: var(--light);
  color: var(--dark);
  font-family: var(--font);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* ---------- site nav ---------- */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 60px;
  padding: 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark);
}

.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
  padding: 15px 8px;
  margin: -15px -8px;
}
.nav-back:hover { color: var(--purple); }

/* ---------- site footer ---------- */

footer {
  border-top: 1px solid var(--border);
  padding: 24px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy { font-size: 13px; color: var(--slate); }

.footer-links { display: flex; gap: 24px; }

.footer-links a {
  font-size: 13px;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
  padding: 10px 4px;
  margin: -10px -4px;
}
.footer-links a:hover { color: var(--purple); }

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 20px 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ---------- page intro ---------- */

.page-intro h1 {
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.03em;
  color: var(--dark);
  margin: 0 0 6px;
}
.page-intro p {
  font-size: 14px;
  color: var(--slate);
  max-width: 440px;
  margin: 0;
}

/* ---------- header ---------- */

header.app-header {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
}
.today-label {
  font-size: 14px;
  color: var(--slate);
}

/* ---------- buttons ---------- */

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--purple);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-md);
  padding: 9px 16px 9px 12px;
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}
.btn-ghost:hover { background: var(--light); }

.btn-icon {
  background: transparent;
  border: none;
  color: var(--slate);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn-icon:hover { color: var(--dark); background: var(--light); }

/* ---------- add-city popover ---------- */

.add-city-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 300px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(92,62,232,0.12);
  padding: 12px;
  display: none;
  z-index: 10;
}
.add-city-panel.open { display: block; }
.add-city-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--slate);
  margin-bottom: 6px;
}
.add-city-panel input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 9px 12px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--dark);
  outline: none;
}
.add-city-panel input:focus { border-color: var(--border-md); }
.add-city-results {
  margin-top: 8px;
  max-height: 260px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.add-city-result {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--dark);
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font);
}
.add-city-result:hover { background: var(--light); }
.add-city-result .country { color: var(--slate); font-size: 12px; }
.add-city-empty { padding: 10px 8px; color: var(--slate); font-size: 13px; }

/* ---------- clock strip ---------- */

.clock-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.city-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.city-card:hover {
  border-color: var(--border-md);
  box-shadow: 0 4px 18px rgba(92,62,232,0.08);
}
.city-card.home {
  background: var(--purple-lt);
  border-color: var(--border-md);
}
.city-card.dragging {
  opacity: 0.6;
  border-color: var(--border-md);
  box-shadow: 0 14px 30px rgba(92,62,232,0.2);
  cursor: grabbing;
  z-index: 5;
}

.day-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 9.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--mid);
  background: var(--light);
  border: 1px solid var(--border);
  padding: 4px 9px;
  border-radius: var(--radius-sm);
}

.remove-city {
  position: absolute;
  top: 12px;
  right: 12px;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.city-card:hover .remove-city,
.remove-city:focus-visible { opacity: 1; }
.city-card.home .remove-city { display: none; }
.city-card:has(.day-badge) .remove-city { top: 12px; right: 40px; }

.drag-handle {
  position: absolute;
  top: 12px;
  left: 12px;
  opacity: 0;
  cursor: grab;
  touch-action: none;
  transition: opacity var(--dur) var(--ease);
}
.city-card:hover .drag-handle,
.drag-handle:focus-visible { opacity: 1; }
.drag-handle:active { cursor: grabbing; }

/* Touch devices have no hover state, so keep removal/reorder controls
   discoverable rather than requiring a hover that touch can never send. */
@media (hover: none) and (pointer: coarse) {
  .remove-city,
  .drag-handle { opacity: 0.55; }
}

.clock-face { margin-top: 14px; }

.digital-time {
  font-size: 25px;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--dark);
  font-variant-numeric: tabular-nums;
}

.city-name {
  text-align: center;
}
.city-name .name {
  font-size: 15.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--dark);
}
.city-name .country {
  font-size: 12.5px;
  color: var(--slate);
  margin-top: 1px;
}

/* ---------- scrubber panel ---------- */

.scrubber-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scrubber-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.scrubber-title-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.scrubber-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
}
.offset-chip {
  font-size: 11px;
  font-weight: 600;
  color: var(--purple);
  background: rgba(92,62,232,0.08);
  padding: 3px 10px;
  border-radius: 100px;
  font-variant-numeric: tabular-nums;
}
.now-btn {
  font-size: 10.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--slate);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 15px;
  cursor: pointer;
  font-family: var(--font);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.now-btn:hover { background: var(--light); color: var(--dark); }

.ruler-row {
  display: flex;
  align-items: center;
  gap: 16px;
}
.ruler-code {
  width: 40px;
  flex: 0 0 40px;
  font-size: 11px;
  color: var(--slate);
}
.ruler-track {
  flex: 1;
  position: relative;
  height: 32px;
  touch-action: none;
  cursor: pointer;
}
.ruler-track svg { display: block; width: 100%; height: 100%; }

/* ---------- map ---------- */

.map-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px 24px;
}

/* ---------- convert a time ---------- */

.convert-panel {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.convert-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.convert-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--dark);
}
.convert-sub {
  font-size: 13px;
  color: var(--slate);
}

.convert-controls {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.convert-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}
.convert-field label {
  font-size: 12px;
  font-weight: 500;
  color: var(--slate);
}
.convert-field input[type="time"],
.convert-field input[type="text"] {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 9px 12px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--dark);
  outline: none;
  background: var(--white);
}
.convert-field input:focus { border-color: var(--border-md); }

.convert-arrow {
  color: var(--slate);
  font-size: 14px;
  padding-bottom: 10px;
}

.convert-city-field { flex: 1 1 200px; min-width: 180px; }
.convert-city-field input { width: 100%; }

.convert-city-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(92,62,232,0.12);
  max-height: 240px;
  overflow-y: auto;
  display: none;
  z-index: 10;
}
.convert-city-results.open { display: block; }

.convert-result {
  font-size: 14px;
  line-height: 1.5;
  color: var(--dark);
  background: var(--light);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin: 0;
}
.convert-result strong { font-weight: 600; color: var(--purple); }
.convert-result.empty { color: var(--slate); }

/* ---------- hint ---------- */

.hint {
  font-size: 12px;
  color: var(--slate);
  text-align: center;
}

@media (max-width: 768px) {
  nav { padding: 0 20px; }
  footer { padding: 20px; flex-direction: column; gap: 12px; text-align: center; }
  .page { padding: 32px 16px 64px; }
}

/* Below ~600px the auto-fill grid has room for one column at most, which
   turned the 13 city cards into a full-height stack that buried the
   scrubber and map thousands of pixels down. A horizontally-scrollable
   row keeps the cards glanceable in a fixed height instead, so the
   controls that actually do something stay one short scroll away. */
@media (max-width: 600px) {
  .clock-strip {
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .clock-strip .city-card {
    flex: 0 0 auto;
    width: min(78vw, 260px);
    scroll-snap-align: start;
  }
}