:root {
  --color-ocean: #0b3b5c;
  --color-ocean-light: #14507a;
  --color-panel-bg: #fbfaf6;
  --color-panel-border: #d8d2c2;
  --color-ink: #16232e;
  --color-ink-soft: #5b6b76;
  --color-accent: #e0592a;
  --color-accent-soft: #f4cbb3;
  --color-danger: #c0392b;

  --mode-train: #33e339;
  --mode-bus: #a83be8;
  --mode-airplane: #000000;

  --font-display: "Georgia", "Iowan Old Style", "Palatino Linotype", serif;
  --font-body: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --panel-width: 340px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-panel: 0 12px 32px rgba(11, 59, 92, 0.28);
  --shadow-popup: 0 18px 40px rgba(11, 59, 92, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-ocean);
  overflow: hidden;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input,
select {
  font-family: inherit;
  font-size: 0.95rem;
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#map-viewport {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    var(--color-ocean) 0%,
    var(--color-ocean-light) 100%
  );
  overflow: hidden;
  cursor: grab;
}

#map-viewport.is-panning {
  cursor: grabbing;
}

#map-transform-layer {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  will-change: transform;
}

#map-image {
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

#connections-layer {
  position: absolute;
  top: 0;
  left: 0;
  overflow: visible;
  pointer-events: none;
}

.connection-line {
  pointer-events: stroke;
  cursor: pointer;
}

.connection-line.selected {
  filter: drop-shadow(0 0 4px var(--color-accent));
}

.connection-distance-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--color-ink);
  paint-order: stroke;
  stroke: var(--color-panel-bg);
  stroke-width: 3px;
  pointer-events: none;
}

#pins-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.pinpoint {
  position: absolute;
  transform: translate(-50%, -100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
}

.pinpoint-icon {
  width: 30px;
  height: 30px;
  padding: 0;
  border: none;
  background: none;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.4));
  transition: transform 0.15s ease;
}

.pinpoint-icon:hover {
  transform: scale(1.12);
}

.pin-svg {
  width: 100%;
  height: 100%;
}

.pin-svg path {
  fill: var(--color-danger);
  stroke: #7a1f16;
  stroke-width: 0.5;
}

.pin-svg circle {
  fill: var(--color-panel-bg);
}

.pinpoint.connecting .pinpoint-icon {
  animation: pin-glow 1.1s ease-in-out infinite;
}

.pinpoint.connecting .pin-svg path {
  fill: var(--color-accent);
  stroke: #8a3312;
}

@keyframes pin-glow {
  0%,
  100% {
    filter: drop-shadow(0 0 2px var(--color-accent));
  }
  50% {
    filter: drop-shadow(0 0 10px var(--color-accent));
  }
}

.pinpoint-label {
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-panel-bg);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-sm);
  padding: 3px 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
  font-size: 12px;
}

.pinpoint-name {
  font-weight: 600;
  color: var(--color-ink);
}

.pinpoint-actions {
  display: flex;
  gap: 3px;
}

.pinpoint-connect-btn,
.pinpoint-delete-btn {
  border: none;
  background: transparent;
  font-size: 12px;
  line-height: 1;
  padding: 2px 3px;
  border-radius: 4px;
}

.pinpoint-connect-btn:hover {
  background: var(--color-accent-soft);
}

.pinpoint-delete-btn:hover {
  background: #f5c6c0;
}

#zoom-controls {
  position: absolute;
  right: 20px;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 5;
  box-shadow: var(--shadow-panel);
  border-radius: var(--radius-md);
  overflow: hidden;
}

#zoom-controls button {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-panel-bg);
  color: var(--color-ink);
  font-size: 1.1rem;
  border-bottom: 1px solid var(--color-panel-border);
}

#zoom-controls button:last-child {
  border-bottom: none;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#zoom-controls button:hover {
  background: var(--color-accent-soft);
}

#find-route-panel {
  position: absolute;
  top: 20px;
  left: 20px;
  bottom: 20px;
  width: var(--panel-width);
  background: var(--color-panel-bg);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
  z-index: 10;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 18px 20px 12px;
  border-bottom: 1px solid var(--color-panel-border);
}

.panel-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--color-ink);
}

#find-route-form {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-bottom: 1px solid var(--color-panel-border);
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field-group label,
.field-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

.field-group input,
.field-group select {
  padding: 8px 10px;
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-ink);
}

.field-group input:focus,
.field-group select:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.field-group input:invalid {
  border-color: var(--color-danger);
}

.sort-toggle {
  display: flex;
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.sort-option {
  flex: 1;
  padding: 7px 4px;
  border: none;
  background: #fff;
  color: var(--color-ink-soft);
  font-size: 0.82rem;
  font-weight: 600;
}

.sort-option + .sort-option {
  border-left: 1px solid var(--color-panel-border);
}

.sort-option.active {
  background: var(--color-accent);
  color: #fff;
}

#find-route-search-btn {
  margin-top: 4px;
  padding: 10px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
}

#find-route-search-btn:disabled {
  background: #cfc9bd;
  color: #8b8577;
  cursor: not-allowed;
}

#find-route-search-btn:not(:disabled):hover {
  background: #c94a1e;
}

#route-results {
  padding: 14px 20px 20px;
  overflow-y: auto;
  flex: 1;
}

.results-placeholder {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  line-height: 1.5;
  margin: 0;
}

#route-results-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.route-result-item {
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: #fff;
}

.route-result-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.route-result-name {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-ink);
}

.route-result-duration {
  font-size: 0.78rem;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.route-result-steps {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 0.76rem;
}

.route-result-steps li {
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--color-panel-bg);
  border: 1px solid var(--color-panel-border);
}

.route-result-steps li.mode-train {
  border-color: var(--mode-train);
}
.route-result-steps li.mode-bus {
  border-color: var(--mode-bus);
}
.route-result-steps li.mode-airplane {
  border-color: var(--mode-airplane);
}

.route-result-footer {
  display: flex;
  justify-content: flex-end;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
}

.popup {
  position: fixed;
  z-index: 1000;
  width: 240px;
  background: var(--color-panel-bg);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-popup);
  padding: 14px;
}

.popup[hidden] {
  display: none;
}

.popup-title {
  margin: 0 0 8px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-ink);
}

.popup form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.popup label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-soft);
}

.popup input,
.popup select {
  padding: 7px 9px;
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius-sm);
  background: #fff;
}

.popup-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 8px;
}

.btn-primary,
.btn-secondary {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.82rem;
  font-weight: 600;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #c94a1e;
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink-soft);
  border: 1px solid var(--color-panel-border);
}

.btn-secondary:hover {
  background: #efe9db;
}

@media (max-width: 720px) {
  :root {
    --panel-width: 100%;
  }

  #find-route-panel {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-height: 45vh;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  #zoom-controls {
    bottom: calc(45vh + 16px);
  }

  .popup {
    width: min(280px, calc(100vw - 32px));
  }
}

@media (prefers-reduced-motion: reduce) {
  .pinpoint.connecting .pinpoint-icon {
    animation: none;
  }
  .pinpoint-icon,
  #find-route-search-btn,
  .btn-primary,
  .btn-secondary {
    transition: none;
  }
}