/* Lobby View */
.lobby-view {
  height: 100%;
}

.lobby-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.lobby-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lobby-logo img {
  width: 32px;
  height: 32px;
}

.lobby-logo h1 {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lobby-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lobby-user .avatar {
  width: 34px;
  height: 34px;
  font-size: 0.8rem;
}

.lobby-user-name {
  font-weight: 500;
  font-size: 0.9rem;
}

.lobby-user .btn-change-name {
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition);
  background: none;
  border: none;
  padding: 4px 8px;
}

.lobby-user .btn-change-name:hover {
  color: var(--primary);
}

/* Lobby Content */
.lobby-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.lobby-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.lobby-actions .btn-primary {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lobby-actions .btn-primary svg {
  width: 18px;
  height: 18px;
}

.lobby-search {
  flex: 1;
}

.lobby-search .input {
  width: 100%;
}

/* Room List */
.room-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.room-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform 100ms ease;
  animation: fadeSlideUp 300ms ease backwards;
}

.room-card:hover {
  background: var(--hover);
  border-color: var(--primary);
}

.room-card:active {
  transform: scale(0.995);
}

.room-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.room-card-name {
  font-weight: 600;
  font-size: 1rem;
}

.room-card-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.room-card-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 10px;
}

.room-card-footer {
  display: flex;
  align-items: center;
  gap: 16px;
}

.room-card-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.room-card-stat svg {
  width: 14px;
  height: 14px;
}

.room-card-users {
  display: flex;
  align-items: center;
  gap: 5px;
}

.room-card-users .online-dot {
  width: 6px;
  height: 6px;
}

/* Empty State */
.lobby-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.lobby-empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

.lobby-empty p {
  font-size: 1rem;
  margin-bottom: 8px;
}

.lobby-empty .hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Username Entry View */
.username-view {
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.username-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 90%;
  max-width: 420px;
  text-align: center;
  box-shadow: var(--shadow);
  animation: fadeSlideUp 400ms ease;
}

.username-card .logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.username-card .logo img {
  width: 44px;
  height: 44px;
}

.username-card .logo h1 {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.username-card .tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.username-input-group {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.username-input-group .input {
  flex: 1;
}

.btn-random {
  width: 44px;
  height: 44px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

.btn-random:hover {
  background: var(--hover);
  border-color: var(--primary);
}

.btn-random svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.username-card .btn-primary {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.username-card .input-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: -12px;
  margin-bottom: 16px;
  text-align: left;
}

@media (max-width: 768px) {
  .lobby-topbar {
    padding: 12px 16px;
  }

  .lobby-content {
    padding: 16px;
  }

  .lobby-actions {
    flex-direction: column;
  }

  .username-card {
    padding: 36px 24px;
  }

  .lobby-user-name {
    display: none;
  }
}