/* Polaris — dark void, single luminous star. Sister of NOVA. */
:root {
  --void: #060810;
  --panel: #0b0e18;
  --panel-edge: #1a2036;
  --ink: #e8ecf8;
  --ink-dim: #8b93ad;
  --star: #cfe0ff;
  --star-glow: rgba(150, 180, 255, 0.45);
  --accent: #6ea8ff;
  --danger: #ff7e8a;
}

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

html, body, #app { height: 100%; }

body {
  background: var(--void);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

#app { display: flex; }

/* ---------- side panel ---------- */
#panel {
  width: 320px;
  flex-shrink: 0;
  height: 100%;
  overflow-y: auto;
  background:
    radial-gradient(circle at 82% 4%, rgba(150, 180, 255, 0.10), transparent 34%),
    var(--panel);
  border-right: 1px solid var(--panel-edge);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  z-index: 1000; /* above leaflet */
}

header { display: flex; align-items: center; gap: 12px; }

#logo {
  width: 34px; height: 34px;
  fill: var(--star);
  filter: drop-shadow(0 0 8px var(--star-glow));
}

h1 {
  font-size: 20px;
  letter-spacing: 0.35em;
  font-weight: 600;
}

.tagline { color: var(--ink-dim); font-size: 12px; letter-spacing: 0.08em; }

h2 {
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 600;
}

[hidden] { display: none !important; }

.hint {
  font-size: 12px;
  color: var(--ink-dim);
}
.hint b { color: var(--ink); }

/* ---------- control groups ---------- */
.group { display: flex; flex-direction: column; gap: 10px; }

.group-label {
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--panel-edge);
  padding-bottom: 6px;
}

.duo { display: flex; gap: 12px; }
.duo .field { flex: 1; }

.opt-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 26px;
  font-size: 13px;
  color: var(--ink);
}
.opt-row > span:first-child { flex: 1; }
label.opt-row { cursor: pointer; }
.opt-row input[type="checkbox"] { position: absolute; opacity: 0; }
.opt-row input[type="time"] {
  width: 108px;
  height: 28px;
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 7px;
  color: var(--ink);
  color-scheme: dark;
  font: inherit;
  font-size: 13px;
  padding: 0 8px;
}
.opt-row input[type="time"]:focus { outline: none; border-color: var(--accent); }

.field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  overflow: hidden;
}
.stepper button {
  width: 34px; height: 34px;
  background: none;
  border: none;
  color: var(--ink);
  font-size: 17px;
  cursor: pointer;
}
.stepper button:hover { background: rgba(150, 180, 255, 0.10); }
.stepper input {
  flex: 1;
  width: 0; /* let flex decide, not the number input's default width */
  text-align: center;
  font: inherit;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  background: none;
  border: none;
  -moz-appearance: textfield;
  appearance: textfield;
}
.stepper input::-webkit-outer-spin-button,
.stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.stepper input:focus { outline: none; background: rgba(150, 180, 255, 0.07); }

.switch {
  width: 36px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  border: 1px solid var(--panel-edge);
  border-radius: 999px;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.switch::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 3px;
  width: 12px; height: 12px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--ink-dim);
  transition: left 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.opt-row input:checked + .switch {
  background: rgba(110, 168, 255, 0.15);
  border-color: var(--accent);
}
.opt-row input:checked + .switch::before {
  background: var(--star);
  box-shadow: 0 0 8px var(--star-glow);
  left: calc(100% - 15px);
}

.segmented {
  display: flex;
  height: 34px;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  overflow: hidden;
}
.segmented button {
  flex: 1;
  background: none;
  border: none;
  color: var(--ink-dim);
  font-size: 13px;
  cursor: pointer;
}
.segmented button:hover { background: rgba(150, 180, 255, 0.10); }
.segmented button.active {
  background: rgba(110, 168, 255, 0.16);
  color: var(--star);
  text-shadow: 0 0 8px var(--star-glow);
}
.segmented.mini { height: 26px; width: 108px; flex-shrink: 0; }
.segmented.mini button { font-size: 12px; }

.field input[type="number"],
.field input[type="time"] {
  height: 34px;
  width: 100%;
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  color: var(--ink);
  color-scheme: dark;
  font: inherit;
  font-size: 14px;
  padding: 0 10px;
}
.field input[type="number"]:focus,
.field input[type="time"]:focus {
  outline: none;
  border-color: var(--accent);
}

/* ---------- address search ---------- */
.search { display: flex; gap: 8px; }
.search input {
  flex: 1;
  min-width: 0;
  height: 36px;
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  padding: 0 10px;
}
.search input:focus { outline: none; border-color: var(--accent); }
.search input::placeholder { color: var(--ink-dim); }
.search button {
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--panel-edge);
  background: none;
  color: var(--ink-dim);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.search button:hover:not(:disabled) { color: var(--ink); border-color: var(--accent); }
.search button:disabled { opacity: 0.4; cursor: wait; }

#stop-list .demand {
  width: 46px;
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 6px;
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  text-align: center;
  padding: 2px 4px;
  margin-right: 8px;
}
#stop-list .demand:focus { outline: none; border-color: var(--accent); }

#stop-list li { flex-wrap: wrap; }
.window-row {
  flex-basis: 100%;
  display: flex;
  gap: 6px;
  align-items: center;
  margin-top: 4px;
  font-size: 11px;
  color: var(--ink-dim);
}
.window-row input[type="time"] {
  background: none;
  border: 1px solid var(--panel-edge);
  border-radius: 6px;
  color: var(--ink);
  color-scheme: dark;
  font: inherit;
  font-size: 11px;
  padding: 2px 4px;
}
.window-row input[type="time"]:focus { outline: none; border-color: var(--accent); }

.add-seg { height: 38px; }
.add-seg button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.add-seg button.active[data-mode="depot"] {
  color: var(--star);
}

/* ---------- stops list ---------- */
.stops-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--panel-edge);
  padding-bottom: 6px;
}
#stop-count { color: var(--accent); }

#stop-list {
  list-style: none;
  margin-top: 8px;
  max-height: 180px;
  overflow-y: auto;
  font-size: 13px;
}
#stop-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 8px;
  border-radius: 6px;
  color: var(--ink-dim);
}
#stop-list li:hover { background: rgba(150, 180, 255, 0.07); color: var(--ink); }
#stop-list li.depot { color: var(--star); }
#stop-list li button {
  background: none; border: none;
  color: var(--ink-dim);
  cursor: pointer;
  font-size: 14px;
}
#stop-list li button:hover { color: var(--danger); }

/* ---------- buttons ---------- */
#calculate {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: rgba(110, 168, 255, 0.12);
  color: var(--ink);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}
#calculate:hover:not(:disabled) {
  background: rgba(110, 168, 255, 0.22);
  box-shadow: 0 0 18px rgba(110, 168, 255, 0.25);
}
#calculate:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-star { width: 15px; height: 15px; fill: var(--star); }

#calculate.loading .btn-label { visibility: hidden; }
#calculate.loading .btn-star {
  position: absolute;
  width: 20px; height: 20px;
  animation: pulse 1.1s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(0.8) rotate(0deg); opacity: 0.5; }
  50% { transform: scale(1.25) rotate(45deg); opacity: 1;
        filter: drop-shadow(0 0 10px var(--star-glow)); }
}

.ghost {
  background: none;
  border: none;
  color: var(--ink-dim);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  padding: 4px;
}
.ghost:hover { color: var(--ink); }

/* ---------- results ---------- */
#route-cards { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }

.route-card {
  border: 1px solid var(--panel-edge);
  border-left: 3px solid var(--truck-color, var(--accent));
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: opacity 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.route-card:hover { background: rgba(150, 180, 255, 0.06); }
.route-card.active {
  background: rgba(110, 168, 255, 0.10);
  box-shadow: 0 0 12px rgba(110, 168, 255, 0.15);
}
.route-card.dimmed { opacity: 0.35; }
.route-card .truck-name {
  color: var(--truck-color, var(--accent));
  font-weight: 600;
  letter-spacing: 0.06em;
}
.route-card .rename {
  background: none;
  border: none;
  color: var(--ink-dim);
  cursor: pointer;
  font-size: 12px;
  padding: 0 3px;
  margin-left: 5px;
}
.route-card .rename:hover { color: var(--star); }
.rename-input {
  background: none;
  border: none;
  border-bottom: 1px solid var(--accent);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  width: 130px;
  outline: none;
}
.route-card .km { float: right; color: var(--ink); }
.route-card .path { color: var(--ink-dim); font-size: 12px; margin-top: 3px; }

#totals { margin-top: 10px; font-size: 13px; color: var(--ink-dim); }
#totals b { color: var(--star); }

#error {
  color: var(--danger);
  font-size: 13px;
  border: 1px solid rgba(255, 126, 138, 0.35);
  border-radius: 8px;
  padding: 9px 12px;
}

footer {
  margin-top: auto;
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
}
footer a { color: var(--accent); text-decoration: none; }

/* ---------- map ---------- */
#map { flex: 1; height: 100%; background: var(--void); }

.leaflet-container { font: inherit; }
.leaflet-control-attribution {
  background: rgba(11, 14, 24, 0.8) !important;
  color: var(--ink-dim) !important;
}
.leaflet-control-attribution a { color: var(--accent) !important; }
.leaflet-bar a {
  background: var(--panel) !important;
  color: var(--ink) !important;
  border-color: var(--panel-edge) !important;
}

.depot-icon svg {
  fill: var(--star);
  filter: drop-shadow(0 0 7px var(--star-glow));
}
.stop-icon {
  background: var(--panel);
  border: 2px solid var(--accent);
  border-radius: 50%;
  color: var(--ink);
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 720px) {
  #app { flex-direction: column; }
  #panel { width: 100%; height: 55%; order: 2; }
  #map { height: 45%; }
}