/* EmitAll - 우주 신호 발송기 CSS */

:root {
  /* 우주적 색상 팔레트 */
  --color-space-deep: #0f0f23;
  --color-space-dark: #1a1a3a;
  --color-space-medium: #2d2d5a;
  --color-space-light: #4a4a7a;
  
  /* 오로라 색상 */
  --color-aurora-primary: #00d9ff;
  --color-aurora-secondary: #7c3aed;
  --color-aurora-accent: #06ffa5;
  --color-aurora-pink: #ff006e;
  
  /* 그라디언트 */
  --gradient-aurora: linear-gradient(135deg, 
    var(--color-aurora-primary) 0%, 
    var(--color-aurora-secondary) 50%, 
    var(--color-aurora-accent) 100%);
  --gradient-space: linear-gradient(180deg, 
    var(--color-space-deep) 0%, 
    var(--color-space-dark) 50%, 
    var(--color-space-medium) 100%);
    
  /* 타이포그래피 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* 스페이싱 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* 애니메이션 */
  --animation-fast: 0.2s ease;
  --animation-medium: 0.4s ease;
  --animation-slow: 0.8s ease;
}

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

body {
  font-family: var(--font-family);
  background: var(--gradient-space);
  color: var(--color-aurora-primary);
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 16px;
  line-height: 1.6;
}

/* 메인 컨테이너 */
.app-container {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* 배경 캔버스 */
.background-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* 메인 신호 인터페이스 */
.signal-interface {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  max-width: 500px;
  width: 100%;
}

/* 신호 입력 섹션 */
.signal-input-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
}

.signal-circle {
  position: relative;
  width: 200px;
  height: 200px;
  border: 4px solid var(--color-aurora-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 217, 255, 0.1);
  backdrop-filter: blur(10px);
  animation: pulse 6.75s ease-in-out infinite;
  box-shadow: 
    0 0 40px rgba(0, 217, 255, 0.4),
    inset 0 0 40px rgba(0, 217, 255, 0.1);
  transition: all var(--animation-medium);
  cursor: pointer;
}

.signal-circle:hover {
  transform: scale(1.05);
  border-color: var(--color-aurora-accent);
  box-shadow: 
    0 0 40px rgba(6, 255, 165, 0.5),
    inset 0 0 40px rgba(6, 255, 165, 0.2);
}

.signal-circle.signal-active {
  transform: scale(1.1);
  border-color: var(--color-aurora-accent);
  background: rgba(6, 255, 165, 0.2);
  box-shadow: 
    0 0 50px rgba(6, 255, 165, 0.6),
    inset 0 0 50px rgba(6, 255, 165, 0.2),
    0 0 100px rgba(0, 217, 255, 0.4);
  animation: signal-burst 4.5s ease-out, pulse 6.75s ease-in-out infinite;
}



.signal-circle.signal-active .signal-icon svg {
  filter: drop-shadow(0 0 20px rgba(6, 255, 165, 1)) drop-shadow(0 0 30px rgba(0, 217, 255, 0.8));
}

.signal-circle.sending {
  pointer-events: none;
  opacity: 0.7;
}

.signal-circle.idle {
  animation: breathe 9s ease-in-out infinite;
}

.signal-icon {
  color: var(--color-aurora-primary);
  filter: drop-shadow(0 0 15px var(--color-aurora-primary));
}

.signal-icon svg {
  filter: drop-shadow(0 0 10px rgba(0, 217, 255, 0.8));
}

/* 메시지 입력 */
.message-input-container {
  position: relative;
  width: 100%;
  max-width: 350px;
}

.message-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-space-light);
  border-radius: 20px;
  color: var(--color-aurora-primary);
  font-size: 1rem;
  text-align: center;
  backdrop-filter: none;
  transition: all var(--animation-medium);
  font-family: var(--font-family);
}

.message-input::placeholder {
  color: var(--color-space-light);
}

.message-input:focus {
  outline: none;
  border-color: var(--color-aurora-primary);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.4);
  transform: scale(1.02);
}

/* 발송된 메시지 표시 */
.sent-message {
  position: fixed;
  background: rgba(0, 217, 255, 0.95);
  color: var(--color-space-deep);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 600;
  width: 350px;
  box-sizing: border-box;
  text-align: center;
  opacity: 0;
  scale: 0.9;
  transition: all var(--animation-medium);
  pointer-events: none;
  z-index: 1000;
  backdrop-filter: blur(15px);
  border: 1px solid var(--color-aurora-primary);
  box-shadow: 0 10px 30px rgba(0, 217, 255, 0.6);
  transform: translate(-50%, -50%);
  white-space: normal;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.sent-message.show {
  opacity: 1;
  scale: 1;
  animation: message-pulse 1.35s ease-out;
}

@keyframes message-pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.05);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}



/* 신호 기록 섹션 */
.signal-history {
  width: 100%;
  max-width: 600px;
  margin-top: var(--spacing-md);
}



/* 기록 목록 */
.history-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-height: 400px;
  overflow-y: auto;
  padding: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) 0;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-space-light);
  border-radius: 15px;
  cursor: pointer;
  transition: all var(--animation-medium);
  width: 100%;
}

.history-item:hover {
  border-color: var(--color-aurora-primary);
  box-shadow: 0 5px 15px rgba(0, 217, 255, 0.2);
  transform: translateY(-2px);
}

.history-item-content {
  flex: 1;
  min-width: 0;
}

.history-item-message {
  font-size: 1rem;
  color: var(--color-aurora-primary);
  margin-bottom: 0.2rem;
}

.history-item-time {
  font-size: 0.8rem;
  color: var(--color-space-light);
}

.history-item-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.history-item-count {
  font-size: 0.9rem;
  color: var(--color-aurora-accent);
  font-weight: 500;
}

.history-item-actions {
  display: flex;
  gap: var(--spacing-xs);
  opacity: 0.4;
  transition: opacity var(--animation-fast);
}

.history-item:hover .history-item-actions {
  opacity: 1;
}

/* 모바일에서는 항상 보이도록 */
@media (max-width: 768px) {
  .history-item-actions {
    opacity: 0.6;
  }
  
  .history-item:hover .history-item-actions {
    opacity: 0.8;
  }
}

.action-btn {
  background: rgba(26, 26, 58, 0.6);
  border: 1px solid rgba(74, 74, 122, 0.5);
  border-radius: 6px;
  padding: 6px;
  color: rgba(74, 74, 122, 0.8);
  cursor: pointer;
  transition: all var(--animation-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.action-btn:hover {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--color-aurora-primary);
  color: var(--color-aurora-primary);
  transform: scale(1.1);
}

.edit-btn:hover {
  background: rgba(6, 255, 165, 0.2);
  border-color: var(--color-aurora-accent);
  color: var(--color-aurora-accent);
}

.delete-btn:hover {
  background: rgba(255, 0, 110, 0.2);
  border-color: var(--color-aurora-pink);
  color: var(--color-aurora-pink);
}

/* 빈 기록 상태 */
.empty-history {
  display: none;
}

/* 버전 컨테이너 - 유튜브 버튼과 동일한 정렬 */
.version-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin: 5px 0 0 0;
  padding: var(--spacing-xs) 0 0 0;
}

/* 버전 정보 - 최고 우선순위 */
html body .app-container .version-info,
html body div.version-info,
body .version-info,
.version-info {
  text-align: center !important;
  color: #4a4a7a !important;
  font-size: 0.75rem !important;
  font-weight: 300 !important;
  letter-spacing: 0.5px !important;
  background: transparent !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* 버전 정보 텍스트 노드 강제 색상 */
.version-info,
.version-info * {
  color: #4a4a7a !important;
}

/* 크레딧 정보 */
html body .app-container .credits-info,
html body div.credits-info,
body .credits-info,
.credits-info {
  text-align: center !important;
  margin: 5px 0 var(--spacing-lg) 0 !important;
  padding: var(--spacing-sm) 0 !important;
  color: #4a4a7a !important;
  font-size: 0.7rem !important;
  font-weight: 300 !important;
  letter-spacing: 0.3px !important;
  width: 100vw !important;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.8;
  box-sizing: border-box;
}

/* 크레딧 정보 강제 색상 적용 */
.credits-info,
.credits-info * {
  color: #4a4a7a !important;
}

/* 파티클 캔버스 */
.particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  pointer-events: none;
  background: transparent;
}

/* 커스텀 모달 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 15, 35, 0.9);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--animation-medium);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--gradient-space);
  border: 1px solid var(--color-space-light);
  border-radius: 20px;
  width: 90%;
  max-width: 480px;
  padding: 0;
  backdrop-filter: blur(15px);
  box-shadow: 0 20px 40px rgba(0, 217, 255, 0.3);
  transform: scale(0.9) translateY(20px);
  transition: all var(--animation-medium);
}

.modal-overlay.show .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-lg);
}

.modal-spacer {
  flex: 1;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-space-light);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: 8px;
  transition: all var(--animation-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: rgba(255, 0, 110, 0.2);
  color: var(--color-aurora-pink);
  transform: scale(1.1);
}

.modal-body {
  padding: var(--spacing-lg);
}

.edit-textarea {
  width: 100%;
  min-height: 120px;
  padding: var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-space-light);
  border-radius: 15px;
  color: var(--color-aurora-primary);
  font-size: 1rem;
  font-family: var(--font-family);
  resize: vertical;
  backdrop-filter: none;
  transition: all var(--animation-medium);
  box-sizing: border-box;
}

.edit-textarea::placeholder {
  color: var(--color-space-light);
}

.edit-textarea:focus {
  outline: none;
  border-color: var(--color-aurora-primary);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.4);
}

.character-count,
.input-byte-counter {
  text-align: right;
  margin-top: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-space-light);
  opacity: 0.7;
  transition: color var(--animation-fast);
}

.character-count.warning,
.input-byte-counter.warning {
  color: var(--color-aurora-pink);
}

.input-byte-counter {
  position: absolute;
  right: 5px;
  bottom: -20px;
  font-size: 0.7rem;
  opacity: 0.6;
}

.message-input-container {
  position: relative;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-space-light);
}

.modal-btn {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--color-space-light);
  border-radius: 12px;
  font-size: 1.4rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--animation-medium);
  background: rgba(26, 26, 58, 0.6);
  color: var(--color-space-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.cancel-btn:hover {
  border-color: var(--color-space-light);
  background: rgba(74, 74, 122, 0.3);
}

.save-btn {
  background: rgba(0, 217, 255, 0.2);
  border-color: var(--color-aurora-primary);
  color: var(--color-aurora-primary);
}

.save-btn:hover {
  background: rgba(0, 217, 255, 0.4);
  box-shadow: 0 5px 15px rgba(0, 217, 255, 0.4);
}

/* 삭제 모달 스타일 */
.delete-modal {
  max-width: 400px;
}

.delete-message {
  text-align: center;
  color: var(--color-aurora-primary);
  font-size: 1rem;
  line-height: 1.5;
  padding: var(--spacing-lg) var(--spacing-sm);
  max-height: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  word-wrap: break-word;
}

.modal-btn.delete-btn {
  background: rgba(255, 0, 110, 0.2);
  border-color: var(--color-aurora-pink);
  color: var(--color-aurora-pink);
}

.modal-btn.delete-btn:hover {
  background: rgba(255, 0, 110, 0.4);
  box-shadow: 0 5px 15px rgba(255, 0, 110, 0.4);
}



/* 스크롤바 스타일링 */
.history-list::-webkit-scrollbar {
  width: 6px;
}

.history-list::-webkit-scrollbar-track {
  background: rgba(26, 26, 58, 0.2);
  border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb {
  background: rgba(74, 74, 122, 0.5);
  border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb:hover {
  background: rgba(74, 74, 122, 0.7);
}

/* 애니메이션 */
@keyframes pulse {
  0%, 100% {
    box-shadow: 
      0 0 30px rgba(0, 217, 255, 0.3),
      inset 0 0 30px rgba(0, 217, 255, 0.1);
  }
  50% {
    box-shadow: 
      0 0 50px rgba(0, 217, 255, 0.5),
      inset 0 0 50px rgba(0, 217, 255, 0.2);
  }
}

@keyframes breathe {
  0%, 100% {
    transform: scale(1);
    box-shadow: 
      0 0 40px rgba(0, 217, 255, 0.4),
      inset 0 0 40px rgba(0, 217, 255, 0.15);
    border-color: var(--color-aurora-primary);
  }
  50% {
    transform: scale(1.03);
    box-shadow: 
      0 0 80px rgba(0, 217, 255, 0.8),
      inset 0 0 80px rgba(0, 217, 255, 0.35);
    border-color: rgba(0, 217, 255, 0.9);
  }
}

@keyframes glow-rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes sparkle {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

@keyframes signal-burst {
  0% {
    box-shadow: 
      0 0 30px rgba(0, 217, 255, 0.3),
      inset 0 0 30px rgba(0, 217, 255, 0.1);
  }
  25% {
    box-shadow: 
      0 0 60px rgba(6, 255, 165, 0.6),
      inset 0 0 60px rgba(6, 255, 165, 0.2),
      0 0 120px rgba(0, 217, 255, 0.5),
      0 0 200px rgba(6, 255, 165, 0.3);
  }
  50% {
    box-shadow: 
      0 0 80px rgba(6, 255, 165, 0.8),
      inset 0 0 80px rgba(6, 255, 165, 0.3),
      0 0 150px rgba(0, 217, 255, 0.6),
      0 0 300px rgba(6, 255, 165, 0.4),
      0 0 450px rgba(0, 217, 255, 0.2);
  }
  75% {
    box-shadow: 
      0 0 70px rgba(6, 255, 165, 0.7),
      inset 0 0 70px rgba(6, 255, 165, 0.25),
      0 0 130px rgba(0, 217, 255, 0.5),
      0 0 250px rgba(6, 255, 165, 0.3),
      0 0 400px rgba(0, 217, 255, 0.15);
  }
  100% {
    box-shadow: 
      0 0 50px rgba(6, 255, 165, 0.6),
      inset 0 0 50px rgba(6, 255, 165, 0.2),
      0 0 100px rgba(0, 217, 255, 0.4);
  }
}

@keyframes error-shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

@keyframes ripple-1 {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
  }
}

@keyframes ripple-2 {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
  }
  100% {
    transform: translate(-50%, -50%) scale(4);
    opacity: 0;
  }
}

@keyframes ripple-expand {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 1;
    border-width: 3px;
    box-shadow: 0 0 0 0 rgba(6, 255, 165, 0.7);
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5);
    opacity: 0.7;
    border-width: 2px;
    box-shadow: 0 0 20px 10px rgba(6, 255, 165, 0.4);
  }
  100% {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
    border-width: 1px;
    box-shadow: 0 0 40px 20px rgba(6, 255, 165, 0);
  }
}

.signal-circle.error-shake,
.message-input.error-shake {
  animation: error-shake 0.5s ease-in-out;
}



/* 반응형 디자인 */
@media (max-width: 768px) {
  .app-container {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .signal-interface {
    min-height: 60vh;
    gap: var(--spacing-lg);
  }
  
  .signal-circle {
    width: 180px;
    height: 180px;
  }
  
  .signal-icon svg {
    width: 70px;
    height: 90px;
  }
  
  .message-input {
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  

  
  .history-title {
    font-size: 1.2rem;
  }
  
  .history-item {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .signal-circle {
    width: 160px;
    height: 160px;
  }
  
  .signal-icon svg {
    width: 60px;
    height: 80px;
  }
  
  .signal-interface {
    min-height: 50vh;
  }
  
  .message-input {
    font-size: 0.9rem;
  }
  
  .youtube-btn {
    width: 44px;
    height: 44px;
  }
  
  .youtube-btn svg {
    width: 26px;
    height: 18px;
  }
  
  .donation-btn {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
}

/* 유튜브 버튼 */
.youtube-button-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-sm) 0;
  margin-bottom: var(--spacing-xs);
  width: 100%;
}

.youtube-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  padding: 0;
  background: transparent;
  border: 1px solid #4a4a7a;
  border-radius: 50%;
  color: #4a4a7a;
  text-decoration: none;
  transition: all var(--animation-medium);
  backdrop-filter: none;
}

.youtube-btn:hover {
  background: rgba(74, 74, 122, 0.1);
  border-color: #6a6a8a;
  color: #6a6a8a;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(74, 74, 122, 0.2);
}

.youtube-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(74, 74, 122, 0.3);
}

.youtube-btn svg {
  flex-shrink: 0;
  transition: all var(--animation-fast);
}

.youtube-btn:hover svg {
  transform: scale(1.15);
}

/* 도네이션 버튼 */
.donation-button-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xs) 0;
  margin-bottom: var(--spacing-xs);
  width: 100%;
}

.donation-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  padding: 0;
  background: transparent;
  border: 1px solid #4a4a7a;
  border-radius: 50%;
  color: #4a4a7a;
  font-size: 1.2rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--animation-medium);
  backdrop-filter: none;
  filter: grayscale(1) brightness(0.6) contrast(0.8);
}

.donation-btn:hover {
  background: rgba(74, 74, 122, 0.1);
  border-color: #6a6a8a;
  color: #6a6a8a;
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 4px 15px rgba(74, 74, 122, 0.2);
  filter: grayscale(1) brightness(0.7) contrast(0.8);
}

.donation-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(74, 74, 122, 0.3);
  filter: grayscale(1) brightness(0.6) contrast(0.8);
}

/* 배경음악 컨트롤 */
.music-control-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: calc(var(--spacing-md) * 0.5) 0;
  margin-bottom: calc(var(--spacing-sm) * 0.5);
}

.music-toggle-btn {
  background: rgba(var(--color-space-medium), 0.3);
  border: 1px solid rgba(var(--color-aurora-primary), 0.3);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-aurora-primary);
  transition: all var(--animation-fast);
  backdrop-filter: blur(10px);
}

.music-toggle-btn:hover {
  background: rgba(var(--color-aurora-primary), 0.1);
  border-color: var(--color-aurora-primary);
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.music-toggle-btn.active {
  background: rgba(var(--color-aurora-primary), 0.2);
  border-color: var(--color-aurora-primary);
  color: var(--color-aurora-accent);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.4);
}

.music-toggle-btn.muted {
  color: var(--color-space-light);
  opacity: 0.6;
}

.music-toggle-btn.muted .volume-lines {
  display: none;
}

.speaker-icon {
  transition: all var(--animation-fast);
}

.music-toggle-btn:hover .speaker-icon {
  transform: scale(1.1);
}