:root {
  color-scheme: dark;
  --bg: #0a0f1a;
  --bg-2: #0f1b33;
  --accent: #f7b500;
  --wall: #1f2f4a;
  --wall-glow: #325074;
  --field: #0d1625;
  --player: #ffcc66;
  --shadow: rgba(0, 0, 0, 0.45);
  --frenzy: #ff7b1a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, rgba(247, 181, 0, 0.08), transparent 35%),
              radial-gradient(circle at 70% 80%, rgba(0, 132, 255, 0.12), transparent 40%),
              linear-gradient(135deg, var(--bg), var(--bg-2));
  color: #e8ecff;
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  font-size: 17px;
  line-height: 1.5;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: none;
}

.wrapper { text-align: center; padding: 24px 24px 38px; max-width: 1280px; }

header h1 { margin: 0 0 8px; letter-spacing: 0.6px; font-size: 2.1rem; }

.tagline { margin: 0 0 14px; font-size: 1.05rem; color: #cbd6ff; }

.stage {
  display: grid;
  grid-template-columns: auto 320px;
  grid-template-rows: auto auto;
  align-items: start;
  justify-content: center;
  gap: 24px 18px;
  margin: 12px auto 0;
  position: relative;
}

.play-area { position: relative; z-index: 1; grid-column: 1; grid-row: 1; }

#game {
  display: block;
  margin: 0 auto;
  border: 3px solid var(--wall-glow);
  box-shadow: 0 18px 50px var(--shadow), 0 0 30px rgba(247, 181, 0, 0.12);
  background: var(--field);
  max-width: 100%;
}

.controls {
  margin-top: 18px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.control-panel {
  align-self: flex-start;
  background: linear-gradient(145deg, rgba(15, 27, 51, 0.9), rgba(12, 18, 32, 0.88));
  border: 1px solid var(--wall-glow);
  border-radius: 12px;
  box-shadow: 0 18px 40px var(--shadow), 0 0 22px rgba(247, 181, 0, 0.16);
  padding: 14px 16px 16px;
  min-width: 310px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  grid-column: 2;
  grid-row: 1;
  z-index: 2;
}

.control-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.control-row.level-row {
  justify-content: space-between;
}

.panel-title {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.4px;
  text-align: left;
}

.panel-hint {
  margin: 2px 0 0;
  color: #cbd6ff;
  font-size: 0.9rem;
  opacity: 0.8;
}

.hud-panel {
  margin-top: 8px;
  padding: 10px 12px 12px;
  background: rgba(12, 18, 32, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.hud-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
}

.hud-row strong { letter-spacing: 0.3px; }

.hud-row.small { font-size: 0.95rem; opacity: 0.9; }

.hud-hype { display: flex; flex-direction: column; gap: 4px; }

.hud-bar {
  width: 100%;
  height: 10px;
  background: #243147;
  border-radius: 999px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hud-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #f7b500, #ff7b1a);
  transition: width 120ms linear;
}

.hud-bar-fill.frenzy {
  background: linear-gradient(90deg, #ff7b1a, #ff3366);
  box-shadow: 0 0 12px rgba(255, 123, 26, 0.4);
}

.dpad {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  display: none;
  grid-template-areas:
    ". up ."
    "left . right"
    ". down .";
  gap: 8px;
  pointer-events: none;
}

.dpad-btn {
  pointer-events: auto;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(15, 27, 51, 0.85);
  color: #e8ecff;
  font-size: 1.2rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
}

.dpad-btn:active { transform: translateY(1px); }
.dpad .up { grid-area: up; }
.dpad .down { grid-area: down; }
.dpad .left { grid-area: left; }
.dpad .right { grid-area: right; }

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

.btn {
  background: var(--wall);
  border: 1px solid var(--wall-glow);
  color: #e8ecff;
  padding: 12px 16px;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 6px 14px var(--shadow);
  transition: transform 0.1s ease, box-shadow 0.2s ease;
  font-size: 1rem;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 18px var(--shadow); }

.btn.ghost {
  background: transparent;
  min-width: 44px;
}

.volume { color: #dbe4ff; font-size: 1rem; display: flex; align-items: center; gap: 8px; }

.volume input { accent-color: var(--accent); }

.level-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #dbe4ff;
  font-size: 0.95rem;
}

#levelSelect {
  background: var(--wall);
  color: #e8ecff;
  border: 1px solid var(--wall-glow);
  border-radius: 6px;
  padding: 6px 8px;
  box-shadow: 0 6px 14px var(--shadow);
  min-width: 120px;
}

.sound-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.2);
  background: radial-gradient(circle at 30% 30%, #fff7d1, #f7b500);
  color: #1a1300;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 6px 14px var(--shadow), 0 0 12px rgba(247, 181, 0, 0.35);
  display: grid;
  place-items: center;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.sound-btn:hover { transform: translateY(-1px) scale(1.02); }
.sound-btn.muted { background: linear-gradient(135deg, #5a5a5a, #2f2f2f); color: #f7b500; }

.settings-toggle {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--wall-glow);
  background: linear-gradient(145deg, var(--wall), var(--bg-2));
  color: #f7b500;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 10px 24px var(--shadow);
  display: none;
  z-index: 3;
}

.btn.go {
  position: relative;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.15);
  background: linear-gradient(120deg, #ff7b1a, #f7b500, #6bd6ff, #d57bff);
  background-size: 200% 200%;
  animation: rainbow 3s linear infinite;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45), 0 0 18px rgba(255, 255, 255, 0.12);
  color: #0a0f1a;
  font-weight: 700;
  text-transform: uppercase;
}

.btn.go::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(255,255,255,0.35), rgba(255,255,255,0));
  mix-blend-mode: screen;
  pointer-events: none;
}

@keyframes rainbow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 10;
}

.modal.show { display: flex; }

.modal-content {
  background: var(--wall);
  border: 1px solid var(--wall-glow);
  padding: 22px 24px;
  border-radius: 12px;
  color: #e8ecff;
  max-width: 520px;
  box-shadow: 0 18px 36px var(--shadow);
  font-size: 1rem;
}

.modal h2 { margin-top: 0; }

.modal ul { text-align: left; padding-left: 20px; margin-top: 6px; }

@media (max-width: 960px) {
  .stage {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    justify-items: center;
  }
  #game { width: 100%; height: auto; max-width: 576px; }
  .control-panel {
    position: absolute;
    top: 52px;
    right: 8px;
    min-width: 260px;
    max-width: min(380px, 90vw);
    display: none;
  }
  .control-panel.open { display: flex; }
  .settings-toggle { display: block; }
  .dpad { display: grid; }
}

/* Back to portfolio */
.back-to-portfolio {
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(5, 5, 5, 0.75);
  color: #f5f5f5;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-decoration: none;
  font-size: 0.85rem;
  backdrop-filter: blur(10px);
}

.back-to-portfolio svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.back-to-portfolio:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 640px) {
  .back-to-portfolio {
    top: 12px;
    left: 12px;
    font-size: 0.8rem;
    padding: 6px 12px;
  }
}