:root {
  --bg: #030803;
  --panel: #051005;
  --line: rgba(0, 255, 100, 0.22);
  --fg: rgba(0, 255, 100, 0.9);
  --dim: rgba(0, 255, 100, 0.5);
  --glow: 0 0 4px #00ff66;
  /* palette — also read by js/render.js for the canvas */
  --green: #00ff64;
  --red: #ff4545;
  --amber: #ffbe28;
  --magenta: #ff50ff;
  --area: #ff6e5a;
  --wx: #2896ff;
  --preview: #5adcff;
  --ok: #7dffb0;
  --cmd: #9fd4ff;
}

* {
  box-sizing: border-box;
  font-family: "Courier New", Courier, monospace;
}

[hidden] {
  display: none !important;
}

html {
  scrollbar-color: rgba(0, 255, 100, 0.35) transparent;
  scrollbar-width: thin;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-size: 13px;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

select,
input[type="number"],
input.cmd-line {
  background: #020a02;
  border: 1px solid var(--dim);
  padding: 3px 6px;
}

input[type="number"] {
  width: 64px;
}

/* ================= LAYOUT ================= */

.app {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 290px;
  grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "head  head  head"
    "left  stage right"
    "foot  foot  foot";
  height: 100vh;
  height: 100dvh;
  gap: 1px;
  background: var(--line);
}

.app > * {
  background: var(--bg);
}

/* ================= HEADER ================= */

.hud {
  grid-area: head;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 24px;
  padding: 8px 16px;
  text-shadow: var(--glow);
}

.brand {
  font-weight: bold;
  letter-spacing: 2px;
  margin-right: auto;
}

.brand span {
  color: var(--dim);
  font-weight: normal;
  font-size: 11px;
  margin-left: 6px;
}

.hud-item {
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.k {
  color: var(--dim);
  font-size: 11px;
  letter-spacing: 1px;
}

.v {
  font-weight: bold;
}

#sys.traffic {
  color: var(--amber);
}

#sys.alert {
  color: var(--red);
  text-shadow: 0 0 6px var(--red);
  animation: blink 0.5s steps(2) infinite;
}

/* ================= PANELS ================= */

.panel {
  overflow: auto;
  padding: 12px 14px;
  background: var(--panel);
}

.panel-left {
  grid-area: left;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow: hidden;
}

.panel-left > section {
  min-height: 0;
  overflow: auto;
}

.list-section {
  flex: 1 1 50%;
}

.log-section {
  flex: 1 1 50%;
}

.log-section h2 {
  position: sticky;
  top: 0;
  background: var(--panel);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

button.mini {
  padding: 1px 6px;
  font-size: 10px;
  letter-spacing: 0;
}

/* Event log */
.log {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 11px;
}

.log li {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 2px 6px;
  padding: 3px 2px;
  border-bottom: 1px dotted rgba(0, 255, 100, 0.1);
  cursor: pointer;
}

.log li:hover {
  background: rgba(0, 255, 100, 0.08);
}

.log li.empty {
  display: block;
  cursor: default;
}

.log .lt {
  color: var(--dim);
}

.log .ltype {
  font-weight: bold;
}

.log .lmsg {
  grid-column: 1 / -1;
  padding-left: 2px;
}

.log .ev-CONFLICT .ltype,
.log .ev-GO-AROUND .ltype { color: var(--red); }
.log .ev-TRAFFIC .ltype,
.log .ev-WX .ltype,
.log .ev-LIVE .ltype { color: var(--amber); }
.log .ev-EMERGENCY .ltype { color: var(--magenta); }
.log .ev-AREA .ltype { color: var(--area); }
.log .ev-RESOLVED .ltype,
.log .ev-CLEAR .ltype,
.log .ev-LANDED .ltype,
.log .ev-DEP .ltype,
.log .ev-ILS .ltype { color: var(--ok); }
.log .ev-CMD .ltype { color: var(--cmd); }
.log .ev-HINT .ltype { color: var(--preview); }
.log .ev-SYSTEM .ltype { color: var(--dim); }

/* Command panel */
.cmd-panel {
  margin-top: 22px;
}

.cmd-panel h3 {
  margin: 12px 0 6px;
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 1px;
}

.cmd-form {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 6px;
  align-items: end;
}

.cmd-form label {
  display: grid;
  gap: 2px;
  font-size: 10px;
  color: var(--dim);
}

.cmd-form input {
  width: 100%;
  color: var(--fg);
}

.cmd-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.cmd-row select {
  flex: 1 0 100%;
  min-width: 0;
}

.cmd-row button {
  flex: 1;
}

.cmd-line {
  width: 100%;
  margin-top: 8px;
  text-transform: uppercase;
}

.cmd-msg {
  min-height: 1.3em;
  margin-top: 6px;
  font-size: 11px;
}

.cmd-probe {
  /* two lines reserved so a preview does not push the conflict panel under the cursor */
  line-height: 1.3;
  min-height: 2.6em;
  margin-top: 6px;
  font-size: 11px;
  color: var(--preview);
}

.cmd-probe.warn { color: var(--amber); }
.cmd-probe.err { color: var(--red); }

.cmd-msg.ok { color: var(--ok); }
.cmd-msg.err { color: var(--red); }

.cmd-row.emg button {
  flex: 1;
  padding: 4px 4px;
}

.cmd-row.emg button[data-sq="7700"],
.cmd-row.emg button[data-sq="7600"],
.cmd-row.emg button[data-sq="7500"] {
  border-color: rgba(255, 80, 255, 0.6);
  color: var(--magenta);
}

.panel-right {
  grid-area: right;
}

.panel h2 {
  margin: 0 0 10px;
  padding-bottom: 6px;
  font-size: 12px;
  letter-spacing: 2px;
  border-bottom: 1px dashed var(--line);
  text-shadow: var(--glow);
}

.panel h2:not(:first-child) {
  margin-top: 22px;
}

/* Target table */
.targets {
  width: 100%;
  border-collapse: collapse;
}

.targets th {
  text-align: left;
  font-size: 11px;
  color: var(--dim);
  font-weight: normal;
  padding: 4px 4px 6px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.targets th:hover {
  color: var(--fg);
}

.targets th.sorted::after {
  content: " ▼";
}

.targets th.sorted.asc::after {
  content: " ▲";
}

.targets td {
  padding: 4px;
  white-space: nowrap;
}

.targets tbody tr {
  cursor: pointer;
}

.targets tbody tr:hover {
  background: rgba(0, 255, 100, 0.08);
}

.targets tr.selected {
  background: rgba(0, 255, 100, 0.16);
  outline: 1px solid var(--dim);
}

.targets tr.traffic td {
  color: var(--amber);
}

.targets tr.conflict td {
  color: var(--red);
  animation: blink 0.5s steps(2) infinite;
}

/* Detail card */
.detail dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  margin: 0;
}

.detail dt {
  color: var(--dim);
  font-size: 11px;
}

.detail dd {
  margin: 0;
  font-weight: bold;
}

.detail .empty,
.conflicts .empty {
  color: var(--dim);
  font-style: italic;
}

.badge {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid currentColor;
}

.badge.TRAFFIC {
  color: var(--amber);
}

.badge.EMERGENCY {
  color: var(--magenta);
  animation: blink 0.5s steps(2) infinite;
}

.badge.AREA {
  color: var(--area);
}

.targets tr.emergency td {
  color: var(--magenta);
}

.targets tr.primary td {
  color: var(--dim);
}

.conflicts li.empty {
  border: none;
  background: none;
  cursor: default;
}

.badge.CONFLICT {
  color: var(--red);
  animation: blink 0.5s steps(2) infinite;
}

.detail button {
  margin-top: 12px;
  width: 100%;
}

/* Conflict list */
.conflicts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.conflicts li {
  padding: 6px 8px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 190, 40, 0.06);
  cursor: pointer;
}

.conflicts li.CONFLICT {
  border-color: var(--red);
  background: rgba(255, 69, 69, 0.1);
}

.conflicts li .pair {
  font-weight: bold;
}

.conflicts li .meta {
  color: var(--dim);
  font-size: 11px;
  margin-top: 2px;
}

.conflicts .adv {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-top: 5px;
}

.conflicts .adv .k {
  font-size: 10px;
  color: var(--dim);
}

.conflicts .adv button {
  padding: 2px 6px;
  font-size: 11px;
  border-color: rgba(90, 220, 255, 0.55);
  color: var(--preview);
}

.conflicts .adv button:hover {
  background: rgba(90, 220, 255, 0.12);
}

.conflicts .adv .none {
  font-size: 10px;
  color: var(--dim);
  font-style: italic;
}

/* ================= RADAR STAGE ================= */

.stage {
  grid-area: stage;
  position: relative;
  container-type: size;
  display: grid;
  place-items: center;
  padding: 16px;
  min-height: 0;
}

.radar-wrap {
  position: relative;
  width: min(100cqw - 32px, 100cqh - 48px);
  aspect-ratio: 1;
  border-radius: 50%;
  box-shadow:
    0 0 30px rgba(0, 255, 100, 0.35),
    inset 0 0 30px rgba(0, 255, 100, 0.35);
}

#radar {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

/* CRT scanlines + vignette + subtle flicker */
.crt {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0) 0px,
      rgba(0, 0, 0, 0) 2px,
      rgba(0, 0, 0, 0.22) 3px
    ),
    radial-gradient(circle, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.55) 100%);
  animation: flicker 6s infinite;
}

.hint {
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  margin: 0;
  text-align: center;
  font-size: 11px;
  color: var(--dim);
}

.hint.ruler {
  color: var(--amber);
}

/* ================= FOOTER ================= */

.controls {
  grid-area: foot;
  display: grid;
  gap: 8px;
  padding: 8px 16px;
}

.controls .row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 28px;
}

.controls .timeline {
  flex-wrap: nowrap;
  gap: 12px;
}

#timeline {
  flex: 1;
  min-width: 0;
  width: auto;
}

#timeline-label {
  white-space: nowrap;
  font-size: 12px;
}

#timeline-label.replay {
  color: var(--amber);
}

body.live-mode #scenario,
body.live-mode #scn-reload,
body.live-mode #scn-load,
body.live-mode #scn-save,
body.live-mode #training,
body.live-mode #speed-group {
  opacity: 0.35;
  pointer-events: none;
}

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

.btn-group {
  display: flex;
}

.btn-group button + button {
  border-left: none;
}

button {
  background: transparent;
  border: 1px solid var(--dim);
  padding: 4px 10px;
  cursor: pointer;
  text-shadow: var(--glow);
}

button:hover {
  background: rgba(0, 255, 100, 0.1);
}

button.active {
  background: rgba(0, 255, 100, 0.25);
  border-color: var(--fg);
}

button:focus-visible,
input:focus-visible {
  outline: 1px solid var(--fg);
  outline-offset: 2px;
}

input[type="range"] {
  accent-color: var(--green);
  width: 120px;
}

/* ================= ANIMATIONS ================= */

@keyframes blink {
  to {
    visibility: hidden;
  }
}

@keyframes flicker {
  0%, 100% { opacity: 1; }
  48% { opacity: 1; }
  50% { opacity: 0.85; }
  52% { opacity: 1; }
}

/* ================= RESPONSIVE ================= */

@media (max-width: 1000px) {
  .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto auto 1fr;
    grid-template-areas:
      "head"
      "stage"
      "foot"
      "left"
      "right";
    height: auto;
    min-height: 100vh;
  }

  .stage {
    height: min(100vw, 80vh);
    padding: 8px;
  }

  .radar-wrap {
    width: min(100cqw - 16px, 100cqh - 36px);
  }

  .hint {
    font-size: 10px;
    padding: 0 8px;
  }

  .app {
    overflow-x: clip;
  }

  .controls .row {
    gap: 10px 16px;
  }

  .ctl {
    flex-wrap: wrap;
  }

  #scenario {
    max-width: 170px;
  }

  .panel-left > section {
    flex: none;
    max-height: 340px;
  }

  .panel {
    overflow: visible;
  }

  .hud {
    gap: 4px 16px;
  }

  .brand {
    width: 100%;
  }
}

/* ================= LANGUAGE SWITCH ================= */

.hud .lang {
  margin-left: auto;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: 1px;
}