/* Factory Smart Alarm - 이미지 스프라이트 및 최적화 */

/* 파비콘 및 로고 최적화 */
.logo-sprite {
  background-image: url('../imgs/smart_factory_favicon.svg');
  background-repeat: no-repeat;
  background-size: contain;
  display: inline-block;
}

/* 로고 크기별 클래스 */
.logo-sm {
  width: 16px;
  height: 16px;
}

.logo-md {
  width: 32px;
  height: 32px;
}

.logo-lg {
  width: 48px;
  height: 48px;
}

.logo-xl {
  width: 64px;
  height: 64px;
}

/* 로딩 스피너 최적화 - CSS만 사용 */
.optimized-spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: -0.125em;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-border 0.75s linear infinite;
}

.optimized-spinner-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.125em;
}

.optimized-spinner-lg {
  width: 3rem;
  height: 3rem;
  border-width: 0.375em;
}

@keyframes spinner-border {
  to {
    transform: rotate(360deg);
  }
}

/* 상태 표시 아이콘 CSS 스프라이트 (Font Awesome 대체) */
.status-indicator {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 0.5rem;
}

.status-online {
  background-color: #28a745;
  box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.3);
  animation: pulse-online 2s infinite;
}

.status-offline {
  background-color: #dc3545;
  box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.3);
}

.status-warning {
  background-color: #ffc107;
  box-shadow: 0 0 0 2px rgba(255, 193, 7, 0.3);
  animation: pulse-warning 2s infinite;
}

.status-unknown {
  background-color: #6c757d;
  box-shadow: 0 0 0 2px rgba(108, 117, 125, 0.3);
}

@keyframes pulse-online {
  0%, 100% { 
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.3); 
  }
  50% { 
    box-shadow: 0 0 0 6px rgba(40, 167, 69, 0.1); 
  }
}

@keyframes pulse-warning {
  0%, 100% { 
    box-shadow: 0 0 0 2px rgba(255, 193, 7, 0.3); 
  }
  50% { 
    box-shadow: 0 0 0 6px rgba(255, 193, 7, 0.1); 
  }
}

/* 그라데이션 배경 최적화 (이미지 대신 CSS 그라데이션 사용) */
.gradient-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-success {
  background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.gradient-warning {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-danger {
  background: linear-gradient(135deg, #fc466b 0%, #3f5efb 100%);
}

.gradient-info {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* 카드 배경 패턴 최적화 */
.pattern-dots {
  background-image: radial-gradient(circle, rgba(0,0,0,0.1) 1px, transparent 1px);
  background-size: 20px 20px;
}

.pattern-grid {
  background-image: 
    linear-gradient(rgba(0,0,0,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.1) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* 차트 및 그래프 요소 최적화 */
.chart-bar-simple {
  background: linear-gradient(to top, var(--bs-primary) 0%, var(--bs-primary) 100%);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.chart-bar-simple:hover {
  filter: brightness(1.1);
  transform: scaleY(1.05);
}

/* 반응형 이미지 최적화 */
.img-optimized {
  max-width: 100%;
  height: auto;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* WebP 지원 확인 및 대체 */
.webp .bg-hero {
  background-image: url('../imgs/hero-bg.webp');
}

.no-webp .bg-hero {
  background-image: url('../imgs/hero-bg.jpg');
}

/* 아이콘 폰트 대신 CSS 도형 사용 */
.icon-arrow-up {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 8px solid currentColor;
  display: inline-block;
  vertical-align: middle;
}

.icon-arrow-down {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid currentColor;
  display: inline-block;
  vertical-align: middle;
}

.icon-arrow-left {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 8px solid currentColor;
  display: inline-block;
  vertical-align: middle;
}

.icon-arrow-right {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 8px solid currentColor;
  display: inline-block;
  vertical-align: middle;
}

/* 메모리 효율적인 박스 그림자 */
.optimized-shadow-sm {
  box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}

.optimized-shadow-md {
  box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
}

.optimized-shadow-lg {
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}

/* 고성능 트랜지션 */
.optimized-transition {
  transition: transform 0.2s ease, opacity 0.2s ease;
  will-change: transform, opacity;
}

.optimized-transition:hover {
  transform: translateY(-2px);
}

/* GPU 가속 애니메이션 */
.gpu-accelerated {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}

/* 프린트 스타일 최적화 */
@media print {
  .logo-sprite,
  .status-indicator,
  .optimized-spinner {
    -webkit-print-color-adjust: exact;
    color-adjust: exact;
  }
  
  .gradient-primary,
  .gradient-success,
  .gradient-warning,
  .gradient-danger,
  .gradient-info {
    background: #f8f9fa !important;
    border: 1px solid #dee2e6 !important;
  }
}

/* 접근성 최적화 */
@media (prefers-reduced-motion: reduce) {
  .optimized-spinner,
  .status-online,
  .status-warning,
  .chart-bar-simple,
  .optimized-transition {
    animation: none !important;
    transition: none !important;
  }
}

/* 고대비 모드 지원 */
@media (prefers-contrast: high) {
  .status-indicator {
    border: 2px solid currentColor;
  }
  
  .logo-sprite {
    filter: contrast(1.5);
  }
}