/* ========================================
   언어 토글 (.lang-toggle)
   ======================================== */
.lang-toggle {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  z-index: 100;
  display: flex;
  gap: 2px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  padding: 2px;
}

.lang-toggle__btn {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  transition: all var(--transition-fast);
  letter-spacing: 0.5px;
}

.lang-toggle__btn:hover {
  color: var(--text-secondary);
}

.lang-toggle__btn.active {
  background: var(--accent-neon);
  color: var(--bg-primary);
}

/* ========================================
   모드 카드 (.mode-card)
   ======================================== */
.mode-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.mode-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--border-radius-lg);
  border: 2px solid transparent;
  transition: border-color var(--transition-normal);
}

.mode-card:hover {
  transform: translateY(-4px);
  background: #1E1E36;
}

.mode-card:hover::before {
  border-color: var(--accent-neon);
}

.mode-card:hover {
  box-shadow: var(--accent-neon-glow);
}

.mode-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.mode-card__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

.mode-card__desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ========================================
   CTA 버튼 (.btn-fire)
   ======================================== */
.btn-fire {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-fire));
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.2rem;
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
  box-shadow: var(--accent-primary-glow);
}

.btn-fire:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(255, 107, 53, 0.6);
}

.btn-fire:active {
  transform: translateY(0);
}

.btn-fire:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-fire:active:not(:disabled) {
  transform: scale(0.97);
}

/* ========================================
   업로드 존 (.upload-zone)
   ======================================== */
.upload-zone {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--bg-secondary);
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent-neon);
  background: rgba(0, 240, 255, 0.03);
}

.upload-zone__icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.upload-zone__text {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.upload-zone__hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.upload-zone__preview {
  display: none;
  width: 100%;
  max-height: 300px;
  object-fit: contain;
  border-radius: var(--border-radius);
}

.upload-zone.has-image .upload-zone__placeholder {
  display: none;
}

.upload-zone.has-image .upload-zone__preview {
  display: block;
}

.upload-zone input[type="file"] {
  display: none;
}

/* ========================================
   티어 뱃지 (.tier-badge)
   ======================================== */
.tier-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  font-family: var(--font-display);
  font-size: 1.5rem;
  animation: tierReveal 0.5s ease;
}

.tier-badge.tier-s {
  background: linear-gradient(135deg, #FFD700, #FFA500);
  color: #1A1A2E;
  box-shadow: var(--tier-s-glow);
}

.tier-badge.tier-a {
  background: linear-gradient(135deg, #A855F7, #7C3AED);
  color: #FFFFFF;
  box-shadow: var(--tier-a-glow);
}

.tier-badge.tier-b {
  background: linear-gradient(135deg, #6B7280, #4B5563);
  color: #FFFFFF;
}

.tier-badge.tier-c {
  background: linear-gradient(135deg, #EF4444, #DC2626);
  color: #FFFFFF;
  box-shadow: var(--tier-c-glow);
}

/* ========================================
   디스 멘트 (.disment-bubble)
   ======================================== */
.disment-bubble {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-lg);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-disment);
  font-size: 1rem;
  color: var(--text-disment);
  text-align: center;
  position: relative;
  line-height: 1.6;
}

.disment-bubble::before {
  content: '\201C';
  position: absolute;
  top: 50%;
  left: 8px;
  transform: translateY(-50%);
  font-size: 1.6rem;
  color: var(--accent-neon);
  font-family: Georgia, serif;
  line-height: 1;
}

.disment-bubble::after {
  content: '\201D';
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  font-size: 1.6rem;
  color: var(--accent-neon);
  font-family: Georgia, serif;
  line-height: 1;
}

/* ========================================
   VS 디바이더 (.vs-divider)
   ======================================== */
.vs-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-neon);
  text-shadow: var(--accent-neon-glow);
  padding: var(--space-md) 0;
}

/* ========================================
   공유 버튼 (.share-btn)
   ======================================== */
.share-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.share-btn:hover {
  transform: translateY(-2px);
}

.share-btn.share-twitter {
  background: #1DA1F2;
  color: white;
}

.share-btn.share-kakao {
  background: #FEE500;
  color: #191919;
}

.share-btn.share-download {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.share-btn.share-native {
  background: var(--accent-primary);
  color: white;
}

/* ========================================
   보조 버튼
   ======================================== */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: #1E1E36;
  border-color: var(--accent-neon);
}

.btn-secondary:active {
  transform: scale(0.97);
}

/* ========================================
   사운드 토글 (.btn-sound-toggle)
   ======================================== */
.btn-sound-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 1.2rem;
  transition: all var(--transition-fast);
  margin-top: var(--space-sm);
}

.btn-sound-toggle:hover {
  background: #1E1E36;
  border-color: var(--accent-neon);
}

.btn-sound-toggle.muted {
  opacity: 0.4;
}

/* ========================================
   카메라 버튼 (.btn-camera)
   ======================================== */
.btn-camera {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.btn-camera:hover {
  background: #1E1E36;
  border-color: var(--accent-neon);
  color: var(--text-primary);
}

.btn-camera:active {
  transform: scale(0.97);
}

/* 카메라 프리뷰 모달 */
.camera-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg-primary);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
}

.camera-modal.active {
  display: flex;
}

.camera-modal video {
  width: 100%;
  max-width: 480px;
  border-radius: var(--border-radius);
  transform: scaleX(-1);
}

.camera-modal__actions {
  display: flex;
  gap: var(--space-md);
}

.camera-modal__capture {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 4px solid var(--text-primary);
  transition: all var(--transition-fast);
}

.camera-modal__capture:active {
  transform: scale(0.9);
  background: var(--accent-fire);
}

.camera-modal__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255,255,255,0.1);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
}

/* ========================================
   모바일 반응형
   ======================================== */
@media (max-width: 480px) {
  .mode-card {
    padding: var(--space-lg) var(--space-md);
  }

  .mode-card__icon {
    font-size: 2rem;
  }

  .mode-card__title {
    font-size: 1.1rem;
  }

  .share-btn {
    min-height: 44px;
    padding: var(--space-sm) var(--space-md);
  }

  .btn-secondary {
    min-height: 44px;
  }

  .btn-fire {
    min-height: 52px;
  }

  .btn-camera {
    min-height: 44px;
  }
}

@media (max-width: 360px) {
  .mode-cards {
    grid-template-columns: 1fr;
  }

  .battle-arena {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .battle-arena .vs-divider {
    padding: var(--space-xs) 0;
    font-size: 1.5rem;
  }
}