:root {
  --bg: #0f1419;
  --surface: #1a2129;
  --surface-2: #232c36;
  --border: #2f3a45;
  --text: #e7edf3;
  --text-dim: #9aa7b3;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #ef4444;
  --success: #22c55e;
  --warn: #f59e0b;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.app-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
}

.app-header h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.18em;
  font-weight: 700;
}

.app-logo {
  display: block;
  margin: 0 auto;
  width: 254px;   /* 50% of the source 508×190 image */
  height: auto;
  image-rendering: -webkit-optimize-contrast;
}

.app-main {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 12px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Play area — single stacked column on mobile, two columns on desktop. */
.play-area {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.map-col,
.side-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

/* Controls */
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}

.control {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-dim);
  flex: 1 1 110px;
  min-width: 110px;
}

.control select {
  appearance: none;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
}

.control select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Buttons */
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--surface-2);
  color: var(--text);
  transition: background 120ms ease, transform 80ms ease, opacity 120ms ease;
}

.btn:hover:not(:disabled) {
  background: #2c3743;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-wide {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  letter-spacing: 0.06em;
}

/* Map meta */
.map-meta {
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--mono);
  padding: 4px 4px 0;
  text-align: center;
  min-height: 16px;
}

.map-meta strong { color: var(--text); font-weight: 600; }

/* Canvas */
.canvas-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: auto;
  overflow-y: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
}

#city-canvas {
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* Ripple */
.ripple {
  position: absolute;
  pointer-events: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 3px solid rgba(37, 99, 235, 0.85);
  left: 50%;
  bottom: 6px;
  transform: translate(-50%, 0);
  animation: ripple 800ms ease-out 1 forwards;
}

@keyframes ripple {
  0%   { width: 16px; height: 16px; opacity: 0.95; border-width: 4px; }
  100% { width: 320px; height: 320px; opacity: 0;    border-width: 1px; }
}

/* Attempts */
.attempt-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 4px 0;
  font-size: 13px;
  color: var(--text-dim);
}

.attempt-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--text-dim);
  background: transparent;
  display: inline-block;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.attempt-dot.current {
  border-color: var(--accent);
  box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.6);
  animation: pulse 1.4s ease-in-out infinite;
}

.attempt-dot.fail {
  background: var(--danger);
  border-color: var(--danger);
}

.attempt-dot.win {
  background: var(--success);
  border-color: var(--success);
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.55); }
  50%      { box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); }
}

.hint-btn {
  margin-left: auto;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 12px;
  padding: 2px 9px;
  cursor: pointer;
  line-height: 1.5;
  transition: opacity 120ms;
}
.hint-btn:hover { opacity: 0.85; }

@keyframes hint-shake {
  0%   { transform: translateX(0); }
  15%  { transform: translateX(-4px) rotate(-2deg); }
  35%  { transform: translateX(4px) rotate(2deg); }
  55%  { transform: translateX(-3px) rotate(-1deg); }
  75%  { transform: translateX(3px) rotate(1deg); }
  90%  { transform: translateX(-1px); }
  100% { transform: translateX(0); }
}
.hint-btn.shake {
  animation: hint-shake 420ms ease;
}

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding: 12px 20px 20px;
  border-top: 1px solid var(--surface-2);
}

.btn-ghost {
  background: none;
  border: 1px solid var(--surface-2);
  color: var(--text-dim);
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 14px;
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }

/* Driver display — single-line "what the driver is saying right now". */
.log-wrap {
  position: relative;
}

.log-inspect-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  font-size: 14px;
  line-height: 1;
  appearance: none;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  opacity: 0.75;
  z-index: 2;
  transition: opacity 120ms ease, background 120ms ease;
}

.log-inspect-btn:hover { background: #2c3743; opacity: 1; }
.log-inspect-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.log {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.4;
  min-height: 64px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

.log:empty::before {
  content: "Awaiting transmission…";
  color: var(--text-dim);
  font-style: italic;
}

.log-entry {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  animation: driver-in 220ms ease-out;
}

.log-entry .icon {
  flex: 0 0 auto;
  font-size: 18px;
  line-height: 1.2;
}

.log-entry .msg {
  flex: 1;
}

.log-entry.fail .msg { color: var(--danger); }
.log-entry.win  .msg { color: var(--success); font-weight: 600; }

@keyframes driver-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Tiny shake on the driver panel each time a new message lands. */
.log.msg-bump {
  animation: msg-bump 280ms ease-out;
}

@keyframes msg-bump {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-2px); }
  50%      { transform: translateX(2px); }
  75%      { transform: translateX(-1px); }
}

.log-action {
  display: flex;
  justify-content: center;
  padding: 4px 0 0;
}

.log-action .btn {
  padding: 8px 18px;
  font-size: 14px;
  letter-spacing: 0.04em;
}

/* Dispatch */
.dispatch {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dispatch-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dispatch-title {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.char-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  margin-left: auto;
}

.supervisor-tip {
  margin: 0;
  padding: 6px 10px;
  font-size: 12.5px;
  line-height: 1.35;
  color: var(--text-dim);
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.22);
  border-radius: var(--radius-sm);
}

.dispatch-mode-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #c7d2fe;
  background: rgba(37, 99, 235, 0.18);
  border: 1px solid rgba(96, 165, 250, 0.5);
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

#dispatch-input.readonly,
#dispatch-input[readonly] {
  background: #161c23;
  color: var(--text-dim);
  cursor: default;
}

/* In reveal mode the lockout block sits above the dispatch block as a slim banner. */
.lockout.banner {
  padding: 10px 14px;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
}

.lockout.banner p { flex: 1; }
.lockout.banner .btn { width: auto; padding: 8px 14px; font-size: 13px; }

#dispatch-input {
  width: 100%;
  resize: vertical;
  min-height: 64px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  line-height: 1.4;
}

#dispatch-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Lockout */
.lockout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: center;
}

.lockout p {
  margin: 0;
  color: var(--text-dim);
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: white;
  animation: spin 700ms linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

.spinner[hidden] { display: none; }
[hidden] { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 14px;
  max-width: calc(100% - 24px);
  z-index: 50;
  animation: toast-in 200ms ease-out;
}

.toast.error { border-color: var(--danger); color: #fecaca; }

/* Inspect modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: modal-in 160ms ease-out;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
}

.modal-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 560px;
  max-height: calc(100dvh - 32px);
  display: flex;
  flex-direction: column;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.modal-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.modal-close {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--text-dim);
  font-size: 24px;
  line-height: 1;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.modal-close:hover { color: var(--text); background: var(--surface-2); }

.modal-body {
  padding: 12px 14px;
  overflow-y: auto;
  font-size: 14px;
}

.action-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.action-list li {
  display: grid;
  grid-template-columns: 26px 22px 1fr;
  gap: 8px;
  align-items: start;
  padding: 8px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.action-list .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  text-align: right;
  padding-top: 2px;
}

.action-list .icon { font-size: 18px; line-height: 1.1; }

.action-list .action-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.action-list .source,
.action-list .type,
.action-list .msg {
  font-size: 14px;
  line-height: 1.4;
}

.action-list .source {
  color: #cbd5e1;
  font-style: italic;
}

.action-list .type {
  color: var(--text-dim);
}

.action-list .type code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 6px;
  border-radius: 4px;
}

.action-list .msg { color: var(--text); }

.modal-body .muted {
  color: var(--text-dim);
  font-style: italic;
  margin: 0 0 12px;
}

@keyframes modal-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 6px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

@media (max-width: 640px) {
  /* Generate button drops to its own row and fills it. */
  #generate-btn { flex: 1 1 100%; width: 100%; }
  .canvas-wrap { padding: 4px; }
}

@media (min-width: 768px) {
  .app-header h1 { font-size: 20px; }
  .app-main { padding: 18px 16px 32px; gap: 16px; max-width: 1100px; }

  /* Two columns: map on the left, controls/play panel on the right.
     align-items: stretch makes the side column match the map's height; the
     dispatch/lockout panel then grows to fill the leftover space so its
     bottom edge lines up with the bottom of the map. */
  .play-area {
    flex-direction: row;
    align-items: stretch;
    gap: 16px;
  }
  .map-col { flex: 1 1 0; }
  .side-col { flex: 0 0 380px; }
  /* Dispatch / lockout panel expands to fill the column. */
  .side-col #dispatch-block,
  .side-col #lockout-block { flex: 1 1 auto; }
  /* The textarea grows with the panel so the writing area fills it. */
  .side-col #dispatch-input { flex: 1 1 auto; }
}