:root {
  color-scheme: dark;
  --bg: #070b14;
  --panel: rgba(17, 25, 42, 0.88);
  --panel-strong: rgba(19, 30, 53, 0.95);
  --line: rgba(107, 141, 193, 0.35);
  --line-strong: rgba(116, 165, 227, 0.5);
  --text: #e5edff;
  --text-muted: #95a7c9;
  --accent: #61b7ff;
  --accent-2: #63dbd0;
  --danger: #f06a88;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% -5%, #223864 0%, transparent 38%),
    radial-gradient(circle at 88% 105%, #1b304c 0%, transparent 42%),
    linear-gradient(180deg, #060a13 0%, var(--bg) 100%);
}

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 22px 18px;
}

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.brand {
  color: #e8f1ff;
  text-decoration: none;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.12em;
}

.brand span {
  display: block;
  margin-top: 5px;
  margin-left: 18px;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.18em;
}

.tools,
.map-tools {
  display: flex;
  gap: 8px;
}

button,
input {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text);
}

button {
  background: linear-gradient(180deg, #1b2a45 0%, #142137 100%);
  padding: 8px 12px;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  border-color: var(--line-strong);
  background: linear-gradient(180deg, #203457 0%, #172844 100%);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.55;
  cursor: default;
  transform: none;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.btn-icon i {
  font-size: 13px;
  line-height: 1;
}

.tools .btn-icon {
  padding: 8px 10px;
  font-size: 11px;
}

.join {
  margin-bottom: 15px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  backdrop-filter: blur(6px);
}

.join form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.join label {
  color: var(--text-muted);
  font-size: 12px;
}

.join input {
  width: 134px;
  padding: 10px 12px;
  background: rgba(13, 20, 36, 0.9);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 16px;
  line-height: 1.3;
}

.join form button {
  border-color: rgba(111, 178, 255, 0.4);
  background: linear-gradient(180deg, #27518b 0%, #1a3d6b 100%);
}

#pair {
  margin: 10px 0 0;
  font-size: 12px;
  color: #9db0cf;
  line-height: 1.5;
}

.pip-help {
  margin: 0 0 13px;
  font-size: 12px;
  line-height: 1.55;
  color: #9fb8d9;
}

.pip-help[hidden] {
  display: none;
}

.battle-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 14px;
  align-items: start;
}

.map-panel,
.session-panel {
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
}

.map-panel {
  position: relative;
}

.map-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px;
}

.map-toolbar h1 {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
}

.map-toolbar p {
  margin: 4px 0 0;
  font-size: 11px;
  color: var(--text-muted);
}

.map-tools .btn-icon {
  min-height: 32px;
  min-width: 34px;
  padding: 0 9px;
  font-size: 11px;
}

.map-tools #fullscreen i {
  font-size: 14px;
}

.expand {
  display: none;
}

.map-notice {
  margin: 0 8px 8px;
  padding: 8px 10px;
  border-radius: 7px;
  background: rgba(59, 47, 27, 0.75);
  color: #e9c781;
  font-size: 11px;
  line-height: 1.45;
}

.map-notice[hidden] {
  display: none;
}

.map-stage {
  position: relative;
  margin: 0 8px;
  border: 1px solid rgba(107, 141, 193, 0.36);
  background: #0d1524;
  box-shadow: inset 0 0 0 2px rgba(24, 41, 63, 0.86);
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  touch-action: manipulation;
  cursor: pointer;
}

.map-message {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 34px;
  text-align: center;
  background: rgba(5, 11, 22, 0.6);
  backdrop-filter: blur(1px);
  color: #bdd0ef;
  font-size: 12px;
  pointer-events: none;
}

.map-message[hidden] {
  display: none;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 10px 12px 12px;
  font-size: 10px;
  color: #8ea3c2;
}

.enemy {
  color: var(--danger);
}

.ally {
  color: var(--accent-2);
}

.monster {
  color: #ddb96d;
}

aside {
  display: grid;
  gap: 14px;
}

.session-panel {
  padding: 14px;
}

.session-panel h2 {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 650;
}

dl {
  margin: 0;
}

dl div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-size: 11px;
  line-height: 1.45;
}

dt {
  color: var(--text-muted);
}

dd {
  margin: 0;
  max-width: 65%;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

#room {
  letter-spacing: 0.11em;
  color: #e6cf91;
}

#latency {
  color: #95d9cf;
}

.share-label {
  margin: 13px 0 6px;
  color: var(--text-muted);
  font-size: 11px;
}

code {
  display: block;
  padding: 8px;
  border: 1px solid rgba(107, 141, 193, 0.35);
  border-radius: 8px;
  background: rgba(10, 16, 29, 0.92);
  color: #c8d7ef;
  word-break: break-all;
}

#copy-link {
  margin-top: 9px;
  font-size: 11px;
}

#pip-video {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 1px;
  height: 1px;
  opacity: 0.01;
  pointer-events: none;
}

body.compact main {
  max-width: min(100%, calc(100dvh - 67px));
  padding: 4px;
}

body.compact .page-head,
body.compact .join,
body.compact aside {
  display: none;
}

body.compact .battle-layout {
  display: block;
}

body.compact .map-panel {
  border-radius: 8px;
}

body.compact .map-toolbar {
  padding: 6px 8px;
}

body.compact .map-toolbar h1 {
  font-size: 11px;
}

body.compact .map-toolbar p {
  margin: 2px 0 0;
  font-size: 9px;
}

body.compact .map-tools .btn-icon {
  min-height: 25px;
  min-width: 26px;
  padding: 0 6px;
}

body.compact .map-tools .btn-icon .btn-text {
  display: none;
}

body.compact .legend {
  gap: 10px;
  padding: 6px 8px;
  font-size: 8px;
}

body.compact .map-stage {
  margin: 0 4px;
}

body.compact .expand {
  display: inline-flex;
}

body.compact .pip-help {
  display: none;
}

body.compact .map-notice {
  position: absolute;
  z-index: 2;
  top: 42px;
  left: 4px;
  right: 4px;
  margin: 0;
}

@media (max-width: 768px) {
  main {
    max-width: 470px;
    padding: 12px;
  }

  .battle-layout {
    display: block;
  }

  .map-panel {
    margin-bottom: 14px;
  }

  .page-head {
    margin-bottom: 12px;
  }

  .join label {
    display: none;
  }

  .join form button {
    font-size: 12px;
  }

  .map-toolbar {
    padding: 11px 10px;
  }

  .map-toolbar h1 {
    font-size: 12px;
  }

  .map-toolbar p {
    font-size: 10px;
  }

  .map-tools .btn-icon {
    min-height: 30px;
    min-width: 30px;
  }

  .map-tools .btn-icon .btn-text {
    display: none;
  }

  body.compact .map-panel {
    margin: 0;
  }
}