:root {
  --app-height: 100dvh;
  --bg-1: #101825;
  --bg-2: #203a56;
  --bg-3: #2e5d73;
  --panel: rgba(8, 15, 28, 0.76);
  --text: #f3f7ff;
  --accent: #9be564;
  --danger: #ff6f61;
  --lane: #9fd6ff;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  min-height: var(--app-height);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 10% 12%, rgba(155, 229, 100, 0.28), transparent 34%),
    radial-gradient(circle at 85% 20%, rgba(135, 182, 255, 0.24), transparent 30%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 55%, var(--bg-3));
  padding: 0;
}

.app {
  width: 100vw;
  height: var(--app-height);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 6px;
  padding-bottom: max(0px, env(safe-area-inset-bottom));
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: var(--panel);
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(6px);
}

.title {
  font-size: clamp(17px, 3.8vw, 24px);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin: 0;
}

.hud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  font-size: clamp(12px, 2.8vw, 15px);
}

.net-status {
  display: inline-flex;
  align-items: center;
  min-height: 33px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  padding: 0 10px;
  white-space: nowrap;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
}

.net-status[data-state="single"] {
  background: rgba(147, 183, 255, 0.2);
  border-color: rgba(147, 183, 255, 0.42);
}

.net-status[data-state="online"] {
  background: rgba(134, 231, 120, 0.22);
  border-color: rgba(134, 231, 120, 0.56);
}

.net-status[data-state="connecting"] {
  background: rgba(255, 196, 120, 0.2);
  border-color: rgba(255, 196, 120, 0.52);
}

.net-status[data-state="error"] {
  background: rgba(255, 133, 133, 0.2);
  border-color: rgba(255, 133, 133, 0.56);
}

.pill {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 5px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  border-radius: 0;
  border: 0;
  background: linear-gradient(180deg, rgba(10, 18, 30, 0.8), rgba(8, 17, 26, 0.92));
  box-shadow: none;
}

.battle-wrap {
  display: grid;
  grid-template-columns: 6px 1fr 6px;
  gap: 0;
  align-items: stretch;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.side-column {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 0;
}

.stat-rail {
  width: 100%;
  height: 100%;
  border-radius: 0;
  border: 0;
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.stat-fill {
  width: 100%;
  height: 100%;
  transition: height 120ms linear;
}

.stat-fill.player-hp {
  background: linear-gradient(180deg, #b6ff6b, #6fb443);
}

.stat-fill.enemy-hp {
  background: linear-gradient(180deg, #ffc0b6, #d95248);
}

.stat-fill.player-mana {
  background: linear-gradient(180deg, #9fdaff, #4a89e8);
}

.stat-fill.enemy-mana {
  background: linear-gradient(180deg, #9dc6ff, #5b66df);
}

@media (max-width: 760px) {
  .battle-wrap {
    grid-template-columns: 5px 1fr 5px;
  }
}

.controls {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 4px;
  align-items: stretch;
}

.counter-map {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 12px minmax(0, 1fr);
  grid-template-rows: auto 10px auto;
  gap: 0;
  align-items: stretch;
}

.extra-controls {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 4px;
  border-left: 1px solid rgba(255, 255, 255, 0.24);
  padding-left: 6px;
}

.extra-controls button {
  height: 100%;
}

.lane-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.lane-picker button {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  background: rgba(8, 15, 28, 0.74);
  color: var(--text);
  padding: 10px 8px;
  font-size: clamp(12px, 2.8vw, 14px);
  font-weight: 700;
  touch-action: manipulation;
}

.lane-picker button.active {
  background: rgba(68, 116, 62, 0.8);
  border-color: rgba(163, 255, 148, 0.6);
  color: #e3ffd5;
}

.controls button {
  --mana-fill: 0%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  background: rgba(8, 15, 28, 0.74);
  color: var(--text);
  padding: 10px 8px;
  font-size: clamp(12px, 2.8vw, 15px);
  font-weight: 700;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.controls button::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--mana-fill);
  background: linear-gradient(90deg, rgba(155, 229, 100, 0.55), rgba(155, 229, 100, 0.22));
  opacity: 0;
  pointer-events: none;
  transition: width 140ms linear, opacity 120ms ease;
  z-index: 0;
}

.controls button[data-mana-state="charging"]::before {
  opacity: 1;
}

.controls button > * {
  position: relative;
  z-index: 1;
}

.unit-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  line-height: 1.05;
  gap: 2px;
}

.unit-price {
  font-size: 11px;
  opacity: 0.9;
  font-weight: 700;
}

.unit-sprite,
.hint-sprite {
  display: inline-block;
  flex: 0 0 auto;
  background-repeat: no-repeat;
  background-size: 200% 200%;
  background-position: 0 0;
}

.unit-sprite {
  width: 28px;
  height: 28px;
}

.hint-sprite {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

.sprite-swordsman { background-image: url("sprites/swordsman_r.png"); }
.sprite-archer { background-image: url("sprites/archer_r.png"); }
.sprite-golem { background-image: url("sprites/golem_r.png"); }
.sprite-catapult { background-image: url("sprites/catapult_r.png"); }
.sprite-rider { background-image: url("sprites/rider_r.png"); }
.sprite-thief { background-image: url("sprites/thief_r.png"); }

.counter-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  text-align: center;
  font-size: 13px;
  font-weight: 800;
  color: rgba(236, 244, 255, 0.95);
  line-height: 1;
  text-shadow: 0 0 3px rgba(159, 214, 255, 0.3);
  pointer-events: none;
  user-select: none;
}

.counter-arrow.left {
  grid-column: 2;
  grid-row: 1;
}

.counter-arrow.down {
  grid-column: 1;
  grid-row: 2;
}

.counter-arrow.up {
  grid-column: 3;
  grid-row: 2;
}

.counter-arrow.right {
  grid-column: 2;
  grid-row: 3;
}

.counter-arrow.left,
.counter-arrow.right {
  transform: scaleX(0.72);
}

.counter-arrow.up,
.counter-arrow.down {
  transform: scaleY(0.78);
}

.counter-map .unit-swordsman {
  grid-column: 1;
  grid-row: 1;
}

.counter-map .unit-archer {
  grid-column: 3;
  grid-row: 1;
}

.counter-map .unit-golem {
  grid-column: 1;
  grid-row: 3;
}

.counter-map .unit-catapult {
  grid-column: 3;
  grid-row: 3;
}

@media (max-width: 420px) {
  .counter-map {
    grid-template-columns: minmax(0, 1fr) 10px minmax(0, 1fr);
    grid-template-rows: auto 9px auto;
  }
  .counter-arrow {
    font-size: 12px;
  }
  .unit-label {
    font-size: 12px;
  }
  .controls button {
    gap: 6px;
    padding: 9px 6px;
  }
  .unit-sprite {
    width: 24px;
    height: 24px;
  }
  .hint-sprite {
    width: 16px;
    height: 16px;
  }
}

.controls button:disabled {
  opacity: 0.45;
}

.controls button[data-mana-state="charging"] {
  opacity: 0.72;
}

#restart {
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 700;
  touch-action: manipulation;
}

#restart {
  background: rgba(26, 50, 26, 0.78);
  color: #d9ffca;
}

.difficulty-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 11, 20, 0.7);
  backdrop-filter: blur(4px);
  padding: 18px;
}

.difficulty-overlay.hidden {
  display: none;
}

.difficulty-panel {
  width: min(460px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: rgba(8, 15, 28, 0.92);
  padding: 14px;
}

.difficulty-title {
  margin: 0 0 10px;
  font-size: clamp(18px, 4.2vw, 24px);
  text-align: center;
}

.difficulty-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.difficulty-buttons button {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  background: rgba(24, 43, 66, 0.85);
  color: var(--text);
  padding: 11px 10px;
  font-size: clamp(13px, 3.2vw, 16px);
  font-weight: 700;
  text-align: center;
  touch-action: manipulation;
}

.difficulty-counters {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  gap: 6px;
  font-size: clamp(12px, 2.8vw, 14px);
  color: rgba(243, 247, 255, 0.92);
}

.difficulty-counters div {
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.multiplayer-overlay {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 11, 20, 0.74);
  backdrop-filter: blur(4px);
  padding: 18px;
}

.multiplayer-overlay.hidden {
  display: none;
}

.multiplayer-panel {
  width: min(460px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 14px;
  background: rgba(8, 15, 28, 0.94);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.multiplayer-title {
  margin: 0;
  font-size: clamp(18px, 4.2vw, 24px);
  text-align: center;
}

.multiplayer-status,
.multiplayer-room {
  margin: 0;
  text-align: center;
  font-size: clamp(12px, 2.8vw, 14px);
}

.room-visibility {
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
}

.room-visibility-label {
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.room-visibility-option {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.room-visibility-option input {
  margin: 0;
  accent-color: #9be564;
}

.room-visibility.hidden {
  display: none;
}

.room-visibility-actions {
  display: grid;
  gap: 6px;
}

.room-visibility-actions button {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(24, 43, 66, 0.85);
  color: var(--text);
  padding: 10px;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  touch-action: manipulation;
}

.multiplayer-status[data-state="error"] {
  color: #ffbcbc;
}

.multiplayer-status[data-state="online"] {
  color: #c9ffc5;
}

.multiplayer-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.multiplayer-actions button,
.multiplayer-join button {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 12px;
  background: rgba(24, 43, 66, 0.85);
  color: var(--text);
  padding: 11px 10px;
  font-size: clamp(13px, 3.1vw, 15px);
  font-weight: 700;
  text-align: center;
  touch-action: manipulation;
}

.multiplayer-join {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.multiplayer-subtitle {
  margin: 2px 0 0;
  text-align: center;
  font-size: 12px;
  opacity: 0.9;
  letter-spacing: 0.3px;
}

.multiplayer-join input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(8, 15, 28, 0.74);
  color: var(--text);
  padding: 10px;
  text-transform: uppercase;
  font-size: 14px;
}

.multiplayer-public {
  display: grid;
  gap: 6px;
}

.multiplayer-public-list {
  display: grid;
  gap: 6px;
  max-height: min(30dvh, 200px);
  overflow: auto;
}

.multiplayer-public-list .public-room-empty {
  margin: 0;
  text-align: center;
  font-size: 13px;
  opacity: 0.88;
}

.multiplayer-public-list .public-room-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  padding: 8px;
}

.multiplayer-public-list .public-room-meta {
  font-size: 13px;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.multiplayer-public-list button {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(24, 43, 66, 0.85);
  color: var(--text);
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  touch-action: manipulation;
}

.multiplayer-room {
  min-height: 1.2em;
  letter-spacing: 0.4px;
}