:root {
  --bg-top: #0e1b2e;
  --bg-bottom: #06101c;
  --panel: rgba(8, 19, 34, 0.86);
  --line: rgba(164, 214, 255, 0.2);
  --text: #f4fbff;
  --soft: #a9c8de;
  --accent: #8be9ff;
  --accent-2: #ffd36c;
  --danger: #ff7f6e;
  --ok: #8aff9c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(59, 108, 163, 0.45), transparent 35%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 20px;
  min-height: 100vh;
  padding: 20px;
  align-items: start;
}

.story-panel,
.game-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.story-panel {
  padding: 24px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-2);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.intro,
.control-card p,
.goal-card p {
  color: var(--soft);
  line-height: 1.5;
}

.control-card,
.goal-card {
  margin-top: 20px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.game-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.hud,
.status-row {
  display: grid;
  gap: 12px;
}

.hud {
  grid-template-columns: repeat(3, 1fr);
}

.hud > div,
.meter {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.label {
  display: block;
  font-size: 0.82rem;
  color: var(--soft);
  margin-bottom: 6px;
}

.status-row {
  grid-template-columns: repeat(2, 1fr);
}

.meter-bar {
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-top: 10px;
}

.fill {
  height: 100%;
  width: 100%;
  transition: width 140ms linear;
}

.ghost-fill {
  background: linear-gradient(90deg, #ffe577, #ff7965);
}

.player-fill {
  background: linear-gradient(90deg, #7effb2, #62d8ff);
}

.canvas-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  width: min(100%, 960px);
  min-width: min(100%, 320px);
  margin: 0 auto;
}

canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border-radius: 24px;
  display: block;
  background: linear-gradient(180deg, #16243b, #0f1727);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(2, 6, 14, 0.66);
  border-radius: 24px;
}

.overlay.visible {
  display: flex;
}

.overlay-card {
  width: min(540px, 100%);
  padding: 26px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(16, 29, 49, 0.98), rgba(10, 19, 34, 0.98));
  border: 1px solid rgba(139, 233, 255, 0.24);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.45);
}

.overlay-tag {
  color: var(--accent-2);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.overlay-card h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.overlay-card p {
  color: var(--soft);
  line-height: 1.6;
}

.overlay-actions {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  color: #04111d;
  background: linear-gradient(90deg, var(--accent), #d4fbff);
}

.ghost-button {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.hidden {
  display: none;
}

@media (max-width: 1280px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1100px) {

  .hud,
  .status-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 12px;
    gap: 12px;
  }

  .story-panel,
  .game-panel {
    border-radius: 18px;
  }

  .story-panel,
  .game-panel,
  .hud > div,
  .meter,
  .control-card,
  .goal-card {
    padding-left: 14px;
    padding-right: 14px;
  }

  .canvas-wrap,
  canvas,
  .overlay {
    border-radius: 18px;
  }

  .overlay {
    padding: 12px;
  }

  .overlay-card {
    padding: 18px;
    border-radius: 18px;
  }
}