.alpha-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  min-height: calc(100vh - 53px);
}

.alpha-main {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2.5rem 2rem;
  background: var(--gradient-bg, var(--background));
  background-attachment: fixed;
}

.alpha-sidebar {
  background: var(--card);
  border-left: 1px solid var(--border);
  padding: 1rem;
  overflow-y: auto;
}

.alpha-container {
  width: 100%;
  max-width: 650px;
  text-align: center;
}

.alpha-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.3rem;
}

.alpha-subtitle {
  color: var(--muted-foreground);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* Mode buttons */
.alpha-modes {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.alpha-mode {
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--muted-foreground);
  font-family: var(--font);
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.alpha-mode:hover {
  border-color: var(--border-hover);
  color: var(--foreground);
}

.alpha-mode.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* Timer */
.alpha-timer {
  font-size: 3rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--foreground);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.alpha-timer.running {
  color: var(--primary);
}

.alpha-timer.done {
  background: linear-gradient(135deg, var(--success), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Live stats */
.alpha-live-stats {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.alpha-stat-box {
  text-align: center;
}

.alpha-stat-label {
  font-size: 0.7rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.alpha-stat-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--foreground);
  font-variant-numeric: tabular-nums;
}

.alpha-stat-value.new-record {
  color: var(--gold);
  text-shadow: 0 0 10px rgba(251, 191, 36, 0.4);
}

/* Letter display */
.alpha-letters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.alpha-letter {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-family: 'JetBrains Mono', 'SF Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  transition: all 0.15s;
  background: transparent;
}

.alpha-letter.current {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(168, 85, 247, 0.12);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.2);
  transform: scale(1.15);
}

.alpha-letter.done {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.alpha-letter.wrong {
  background: var(--destructive);
  border-color: var(--destructive);
  color: #fff;
  animation: wrongShake 0.3s ease-out;
}

@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.alpha-letter.waiting {
  color: var(--muted-foreground);
  opacity: 0.4;
}

/* Target letter */
.alpha-target {
  margin-bottom: 1.5rem;
}

.alpha-target-label {
  font-size: 0.75rem;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
}

.alpha-target-letter {
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: transform 0.15s;
}

.alpha-target-letter.pop {
  animation: targetPop 0.2s ease-out;
}

@keyframes targetPop {
  0% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Hidden input */
.alpha-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* Status */
.alpha-status {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  margin-bottom: 1rem;
}

.alpha-status.mistake {
  color: var(--destructive);
  font-weight: 600;
}

/* Results */
.alpha-results {
  padding: 2rem 0;
}

.alpha-result-time {
  font-size: 5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.alpha-result-label {
  font-size: 1.1rem;
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

.alpha-result-mistakes {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  margin-bottom: 1.5rem;
}

.alpha-retry {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
}

/* History */
.alpha-history {
  margin-top: 2rem;
  text-align: left;
}

.alpha-history-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  text-align: center;
}

.alpha-history-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.alpha-history-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--muted-foreground);
}

.alpha-history-item.best {
  border-color: var(--gold);
  color: var(--gold);
}

.alpha-history-item .history-mode {
  font-size: 0.6rem;
  opacity: 0.6;
  margin-left: 0.3rem;
}

/* Responsive */
@media (max-width: 900px) {
  .alpha-layout { grid-template-columns: 1fr; }
  .alpha-sidebar { display: none; }
}

@media (max-width: 500px) {
  .alpha-letter { width: 30px; height: 30px; font-size: 0.85rem; }
  .alpha-target-letter { font-size: 3.5rem; }
  .alpha-result-time { font-size: 3.5rem; }
}