:root {
  --bg-0: #07101b;
  --bg-1: #0f2230;
  --bg-2: #1d1422;
  --panel: rgba(9, 18, 28, 0.82);
  --panel-strong: rgba(10, 19, 29, 0.94);
  --line: rgba(118, 173, 201, 0.28);
  --text: #edf7ff;
  --muted: #98acbc;
  --teal: #54f3d2;
  --cyan: #8cc7ff;
  --amber: #ffcf66;
  --red: #ff6e6e;
  --pink: #ff7edb;
  --shadow: rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(84, 243, 210, 0.12), transparent 26%),
    radial-gradient(circle at 85% 15%, rgba(255, 126, 219, 0.12), transparent 20%),
    linear-gradient(135deg, var(--bg-0), var(--bg-1) 55%, var(--bg-2));
  overflow-x: hidden;
  overflow-y: auto;
}

button {
  font: inherit;
}

.app-shell {
  position: relative;
  min-height: 100dvh;
  padding: clamp(10px, 2vw, 24px);
}

.backdrop-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.45;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 45%, transparent 95%);
}

.topbar,
.panel,
.overlay-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 18px 40px var(--shadow);
  backdrop-filter: blur(10px);
}

.topbar {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 20px 24px;
  border-radius: 24px;
}

.topbar h1,
.overlay-card h2,
.panel h2,
.objective-banner h2,
.boss-banner h2 {
  margin: 0;
  font-family: "Consolas", "Courier New", monospace;
  letter-spacing: 0.02em;
}

.eyebrow,
.label {
  margin: 0 0 6px;
  color: var(--amber);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.topbar-actions,
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: clamp(12px, 1.8vw, 18px);
  margin-top: clamp(12px, 1.8vw, 18px);
  align-items: start;
}

.playframe {
  min-width: 0;
}

.playhead {
  display: flex;
  gap: 14px;
  align-items: stretch;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.canvas-stack {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(4, 9, 14, 0.9);
  box-shadow: 0 24px 60px var(--shadow);
  width: min(100%, 1000px);
  margin: 0 auto;
  touch-action: none;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  max-height: min(72dvh, 900px);
  background: linear-gradient(180deg, rgba(8, 13, 24, 0.9), rgba(5, 8, 14, 0.95));
  touch-action: none;
}

.touch-controls {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 14px;
  pointer-events: none;
}

.touch-zone {
  min-height: 92px;
  border: 1px dashed rgba(140, 199, 255, 0.28);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(6, 15, 24, 0.12), rgba(6, 15, 24, 0.34));
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 14px;
}

.hud-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 18px;
}

.hud-dock {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.objective-banner,
.boss-banner,
.stats-cluster,
.cooldowns,
.commit-rack,
.signals {
  pointer-events: none;
  border-radius: 20px;
  padding: 14px 16px;
}

.objective-banner {
  flex: 1 1 520px;
  max-width: 100%;
}

.objective-banner .subtext {
  margin: 8px 0 0;
  color: var(--muted);
}

.boss-banner {
  flex: 0 1 300px;
  min-width: 260px;
  border-color: rgba(255, 110, 110, 0.4);
  background: rgba(44, 9, 16, 0.88);
}

.stats-cluster,
.cooldowns,
.commit-rack,
.signals {
  min-width: 0;
}

.stat,
.cooldown-list div,
.summary-grid div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.meter {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  margin-top: 8px;
}

.meter-fill {
  height: 100%;
  width: 0;
  transition: width 120ms linear;
}

.health {
  background: linear-gradient(90deg, #5af9b1, #4ec0ff);
}

.instability {
  background: linear-gradient(90deg, #ffcf66, #ff6e6e, #ff7edb);
}

.cooldown-list,
.warning-list,
.overlay-list,
.controls-panel ul {
  margin: 0;
  padding-left: 18px;
}

.commit-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.commit-chip {
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(140, 199, 255, 0.28);
  background: rgba(22, 36, 50, 0.92);
  font-size: 0.86rem;
}

.warning-list li,
.controls-panel li,
.overlay-list li {
  margin-bottom: 8px;
  color: var(--muted);
}

.tutorial-prompt,
.toast {
  align-self: center;
  max-width: 520px;
  border-radius: 999px;
  padding: 12px 20px;
  border: 1px solid rgba(140, 199, 255, 0.38);
  background: rgba(10, 18, 31, 0.92);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
}

.tutorial-prompt {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  margin: 0;
}

.toast-stack {
  position: absolute;
  top: 100px;
  right: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.toast {
  max-width: 320px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.panel {
  border-radius: 24px;
  padding: 18px;
}

.summary-grid {
  display: grid;
  gap: 10px;
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(3, 7, 12, 0.75);
  backdrop-filter: blur(12px);
}

.overlay.hidden,
.hidden {
  display: none;
}

.overlay.visible {
  display: grid;
}

.overlay-card {
  width: min(900px, 100%);
  border-radius: 28px;
  padding: 28px;
}

.hero-card {
  max-width: 760px;
}

.medium-card {
  max-width: 640px;
}

.wide-card {
  max-width: 980px;
}

.action-button,
.ghost-button,
.upgrade-card {
  border-radius: 16px;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.action-button,
.ghost-button {
  padding: 12px 18px;
  cursor: pointer;
}

.action-button {
  border: 1px solid rgba(84, 243, 210, 0.5);
  color: #041018;
  background: linear-gradient(135deg, #7efee0, #8cc7ff);
}

.ghost-button {
  border: 1px solid rgba(140, 199, 255, 0.3);
  background: rgba(20, 31, 44, 0.92);
  color: var(--text);
}

.action-button:hover,
.ghost-button:hover,
.upgrade-card:hover {
  transform: translateY(-1px);
}

.upgrade-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.upgrade-card {
  width: 100%;
  border: 1px solid rgba(140, 199, 255, 0.25);
  background:
    radial-gradient(circle at top right, rgba(84, 243, 210, 0.12), transparent 40%),
    rgba(14, 23, 35, 0.96);
  color: var(--text);
  padding: 16px;
  text-align: left;
  cursor: pointer;
}

.upgrade-card h3,
.upgrade-card p {
  margin: 0 0 8px;
}

.upgrade-card small {
  display: block;
  color: var(--amber);
  margin-bottom: 10px;
}

.upgrade-card em {
  color: var(--muted);
  font-style: normal;
}

.results-grid {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

@media (max-width: 1120px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .hud-dock {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .topbar h1 {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
  }

  .playhead,
  .hud-dock {
    gap: 10px;
  }

  .objective-banner,
  .boss-banner,
  .stats-cluster,
  .cooldowns,
  .commit-rack,
  .signals {
    padding: 12px 14px;
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: 14px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hud-layer {
    padding: 10px;
  }

  .stat-row {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .canvas-stack {
    width: 100%;
    border-radius: 20px;
  }

  canvas {
    max-height: min(62dvh, 72svh);
  }

  .touch-controls {
    display: grid;
  }

  .hud-dock {
    grid-template-columns: 1fr;
  }

  .playhead {
    flex-direction: column;
  }

  .objective-banner .subtext,
  .warning-list,
  .cooldown-list {
    font-size: 0.84rem;
  }

  .boss-banner {
    min-width: 0;
  }

  .tutorial-prompt {
    max-width: calc(100% - 20px);
    bottom: 10px;
  }
}

@media (max-width: 540px) {
  .topbar-actions {
    width: 100%;
  }

  .topbar-actions button {
    flex: 1 1 0;
  }

  .touch-zone {
    min-height: 78px;
  }

  .overlay-card {
    padding: 20px;
    border-radius: 20px;
  }

  .objective-banner h2,
  .boss-banner h2 {
    font-size: 1rem;
  }
}