@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=Space+Grotesk:wght@400;600;700&display=swap");

.autotetris-body {
  color-scheme: only light;
  --bg-1: #0a1020;
  --bg-2: #1a2336;
  --bg-3: #283654;
  --panel: rgba(15, 20, 34, 0.88);
  --panel-border: rgba(255, 255, 255, 0.08);
  --accent: #f6c453;
  --accent-2: #67d1a3;
  --text: #f3f6ff;
  --muted: #b5c1d6;
}

.autotetris-main {
  padding: 0;
}

.autotetris-body {
  margin: 0;
  min-height: 100vh;
}

.autotetris-body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(120deg, rgba(255, 255, 255, 0.03), transparent 45%);
  background-size: 28px 28px, cover;
  opacity: 0.6;
  pointer-events: none;
}

.autotetris-shell {
  min-height: calc(100vh - 120px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 5vw 64px;
  font-family: "Space Grotesk", "Avenir Next", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top left, #334566 0%, transparent 35%),
    radial-gradient(circle at 20% 40%, #223047 0%, transparent 45%),
    linear-gradient(140deg, var(--bg-1), var(--bg-2) 55%, var(--bg-3));
}

.autotetris-shell * {
  box-sizing: border-box;
}

.autotetris-shell .app {
  width: min(1200px, 96vw);
  display: grid;
  gap: 20px;
}

.autotetris-shell .app header {
  font-size: clamp(1.4rem, 2.4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
}

.autotetris-shell .app header span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.9rem;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent);
}

.autotetris-shell .layout {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(280px, 1fr) minmax(260px, 0.9fr);
  align-items: start;
}

.autotetris-shell .board {
  position: relative;
  background: rgba(12, 16, 27, 0.8);
  border-radius: 24px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 30px 60px rgba(5, 8, 15, 0.45);
  animation: autotetris-float-in 0.9s ease-out both;
}

.autotetris-shell .board-reset {
  position: absolute;
  right: 24px;
  bottom: 24px;
}

.autotetris-shell .board canvas {
  display: block;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 12, 21, 0.85);
}

.autotetris-shell .overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(7, 9, 14, 0.65);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  border-radius: 24px;
}

.autotetris-shell .overlay span {
  font-size: 0.9rem;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.autotetris-shell .overlay.show {
  opacity: 1;
}

.autotetris-shell .panel {
  display: grid;
  gap: 16px;
  background: var(--panel);
  border-radius: 24px;
  padding: 22px;
  border: 1px solid var(--panel-border);
  box-shadow: 0 20px 40px rgba(5, 8, 15, 0.35);
  animation: autotetris-fade-in 0.9s ease-out both;
}

.autotetris-shell .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.autotetris-shell .stat {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.autotetris-shell .stat label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.autotetris-shell .stat strong {
  font-size: 1.2rem;
  margin-top: 4px;
  display: block;
}

.autotetris-shell .control {
  display: grid;
  gap: 8px;
}

.autotetris-shell .control label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.autotetris-shell .control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.autotetris-shell .control-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 4px;
}

.autotetris-shell .weights {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.autotetris-shell .weights-grid {
  display: grid;
  gap: 8px;
}

.autotetris-shell .weight-row {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  align-items: center;
}

.autotetris-shell .weight-row span {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  text-align: center;
  padding: 4px 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.autotetris-shell .weight-row input {
  width: 100%;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(7, 10, 18, 0.6);
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
}

.autotetris-shell .weights-note {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 8px;
}

.autotetris-shell .next-wrap {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.autotetris-shell .next-wrap canvas {
  margin-top: 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.autotetris-submit {
  display: grid;
  gap: 12px;
}

.autotetris-submit form {
  display: grid;
  gap: 12px;
}

.autotetris-submit .submit-field {
  display: grid;
  gap: 8px;
}

.autotetris-submit label {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.autotetris-submit textarea {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(7, 10, 18, 0.6);
  color: var(--text);
  font-family: "IBM Plex Mono", monospace;
}

.autotetris-shell .submit-status {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.autotetris-shell button {
  border: none;
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: #0b0f1a;
}

.active {
  background: linear-gradient(135deg, var(--accent), #f7e08b);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.active:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(246, 196, 83, 0.35);
}

@keyframes autotetris-float-in {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes autotetris-fade-in {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .autotetris-shell {
    padding: 32px 6vw 48px;
  }

  .autotetris-shell .layout {
    grid-template-columns: 1fr;
  }

  .autotetris-shell .panel {
    order: 2;
  }
}