* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0a;
  --surface: #151515;
  --text: #e0e0e0;
  --text-dim: #666;
  --accent: #ff4444;
  --accent-glow: rgba(255, 68, 68, 0.3);
  --green: #44ff66;
  --green-glow: rgba(68, 255, 102, 0.3);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Screens */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  width: 100%;
  max-width: 500px;
  gap: 1.5rem;
}

.screen.active {
  display: flex;
}

/* Logo */
.logo {
  font-size: 5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--text);
  line-height: 1;
}

.logo-small {
  font-size: 2.5rem;
}

/* Tagline */
.tagline {
  font-size: 1.2rem;
  color: var(--text-dim);
  margin-top: -0.5rem;
}

.hint {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-top: 1rem;
}

.room-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Mic selector */
.mic-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--text-dim);
  padding: 0.5rem 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  width: 100%;
  max-width: 300px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
}

.mic-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 1rem 3rem;
  font-size: 1.2rem;
  font-family: 'Courier New', Courier, monospace;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
  background: #ff6666;
  transform: scale(1.02);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: transparent;
  color: var(--text-dim);
  border: 2px solid var(--text-dim);
  padding: 0.7rem 2rem;
  font-size: 1rem;
  font-family: 'Courier New', Courier, monospace;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
  border-color: var(--text);
  color: var(--text);
}

/* Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--surface);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status-text {
  color: var(--text-dim);
  font-size: 1.1rem;
}

/* Room */
.room-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 2rem;
  position: relative;
}

#room-count {
  font-size: 3rem;
  font-weight: 900;
  color: var(--green);
}

.grunters-label {
  font-size: 1rem;
  color: var(--text-dim);
}

#room-count.empty {
  color: var(--text-dim);
}

.pulse-ring.empty {
  background: var(--text-dim);
}

.pulse-ring.empty::after {
  border-color: var(--text-dim);
  animation: none;
}

/* Pulse ring */
.pulse-ring {
  width: 16px;
  height: 16px;
  background: var(--green);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.pulse-ring::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--green);
  animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* Listening indicator */
.listening {
  color: var(--green);
  font-size: 0.9rem;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Floating word */
.floating-word {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  font-family: 'Courier New', Courier, monospace;
  pointer-events: none;
  z-index: 200;
  animation: floatUp 2s ease-out forwards;
}

@keyframes floatUp {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -250%) scale(0.6);
  }
}

/* Booted screen */
.busted-title {
  font-size: 4rem;
  font-weight: 900;
  color: var(--accent);
  text-shadow: 0 0 40px var(--accent-glow);
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(6px); }
}

.busted-subtitle {
  font-size: 1.2rem;
  color: var(--text-dim);
}

.detected-word {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  font-style: italic;
}

.busted-rule {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Error screen */
.error-text {
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1.6;
}

/* Toast notifications */
#toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 100;
}

.toast {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  padding: 0.8rem 1.2rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  color: var(--text);
  animation: slideIn 0.3s ease-out, fadeOut 0.5s ease-in 2.5s forwards;
  max-width: 300px;
}

.toast.toast-info {
  border-left-color: var(--text-dim);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* Responsive */
@media (max-width: 480px) {
  .logo {
    font-size: 3.5rem;
  }

  .busted-title {
    font-size: 3rem;
  }

  .btn-primary {
    padding: 0.8rem 2rem;
    font-size: 1rem;
  }

  #room-count {
    font-size: 2.5rem;
  }
}