/* ================ LOADING ANIMATIONS ================ */

/* Custom Spin Animation */
@keyframes custom-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.animate-spin {
  animation: custom-spin 1s linear infinite;
}

.animation-delay-150 {
  animation-delay: 0.15s;
}

.animation-delay-300 {
  animation-delay: 0.3s;
}

.animation-delay-600 {
  animation-delay: 0.6s;
}

/* Bounce Animation */
@keyframes custom-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.animate-bounce {
  animation: custom-bounce 1s ease-in-out infinite;
}

/* Pulse Animation */
@keyframes custom-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.animate-pulse {
  animation: custom-pulse 1s ease-in-out infinite;
}

/* Progress Bar Animation */
@keyframes loading-progress {
  0% { 
    width: 0%;
    background-position: 0% 50%;
  }
  50% { 
    width: 70%;
    background-position: 100% 50%;
  }
  100% { 
    width: 100%;
    background-position: 0% 50%;
  }
}

.loading-progress {
  animation: loading-progress 1s ease-in-out infinite alternate;
  background-size: 200% 200%;
}

/* Fade In/Out Animation */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

.animate-fade-in {
  animation: fade-in 1s ease-out;
}

.animate-fade-out {
  animation: fade-out 1s ease-in;
}

/* Slide In Animation untuk Toast */
@keyframes slide-in-right {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slide-out-right {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Floating Animation untuk Loading */
@keyframes floating-loading {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-10px) rotate(5deg); }
  75% { transform: translateY(5px) rotate(-5deg); }
}

.animate-floating {
  animation: floating-loading 1s ease-in-out infinite;
}

/* Gradient Animation untuk Background */
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.gradient-animate {
  background: linear-gradient(135deg, #667eea, #764ba2, #3b82f6, #8b5cf6);
  background-size: 400% 400%;
  animation: gradient-shift 1s ease infinite;
}

/* Loading Bar Animation */
@keyframes loading-bar {
  0% { transform: scaleX(0); opacity: 1; }
  50% { transform: scaleX(1); opacity: 0.5; }
  100% { transform: scaleX(0); opacity: 0; }
}

.loading-bar {
  animation: loading-bar 1s ease-in-out infinite;
  transform-origin: left;
}

/* Ripple Effect */
@keyframes ripple {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.ripple {
  animation: ripple 1s ease-out infinite;
}

/* Text Typing Animation */
@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink-caret {
  from, to { border-color: transparent }
  50% { border-color: white }
}

.typing-animation {
  overflow: hidden;
  border-right: .15em solid white;
  white-space: nowrap;
  animation: typing 1s steps(40, end), blink-caret .75s step-end infinite;
}

/* ================ LOADING COMPONENTS ================ */

/* Loading Overlay Variants */
.loading-overlay-minimal {
  background: rgba(15, 23, 42, 0.95);
}

.loading-overlay-blur {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
}

/* Loading Spinner Variants */
.spinner-dots {
  display: flex;
  gap: 0.5rem;
}

.spinner-dots div {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  animation: custom-bounce 1s ease-in-out infinite;
}

.spinner-dots div:nth-child(2) {
  animation-delay: 0.2s;
}

.spinner-dots div:nth-child(3) {
  animation-delay: 0.4s;
}

/* Loading Card */
.loading-card {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  padding: 2rem;
  backdrop-filter: blur(10px);
}

/* Shimmer Effect untuk Skeleton Loading */
@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

.shimmer {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(255, 255, 255, 0.1) 50%, 
    rgba(255, 255, 255, 0) 100%);
  background-size: 1000px 100%;
  animation: shimmer 1s infinite linear;
}

/* Loading dengan Logo ITS */
.its-loading {
  position: relative;
}

.its-loading::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #0067ac, #003366);
  border-radius: 20px;
  animation: rotate 1s linear infinite;
}

.its-loading::after {
  content: 'ITS';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-weight: bold;
  font-size: 1.2rem;
}

/* ================ DARK MODE LOADING STYLES ================ */

.dark-mode .loading-overlay-minimal {
  background: rgba(0, 0, 0, 0.9);
}

.dark-mode .loading-overlay-blur {
  background: rgba(0, 0, 0, 0.7);
}

.dark-mode .loading-card {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.2), rgba(55, 48, 163, 0.2));
  border-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .shimmer {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(255, 255, 255, 0.05) 50%, 
    rgba(255, 255, 255, 0) 100%);
}

/* ================ RESPONSIVE LOADING ================ */

@media (max-width: 768px) {
  .loading-overlay {
    padding: 1rem;
  }
  
  .loading-card {
    padding: 1.5rem;
    margin: 0 1rem;
  }
  
  .its-loading::before {
    width: 60px;
    height: 60px;
  }
  
  .its-loading::after {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .loading-overlay {
    padding: 0.5rem;
  }
  
  .loading-card {
    padding: 1rem;
  }
  
  .its-loading::before {
    width: 50px;
    height: 50px;
  }
}