/* Loader Styles v2.0 */

#app-loader {
  position: fixed;
  inset: 0;
  background-color: var(--loader-bg, #030303);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  transition:
    opacity 0.6s ease-in-out,
    visibility 0.6s ease-in-out;
  overflow: hidden;
  &.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
}

/* Background Effects */
.loader-bg-effects {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  isolation: isolate;
}

.loader-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: grid-move 20s linear infinite;
  opacity: 0.3;
}

@keyframes grid-move {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.loader-gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  animation: floatOrb 8s ease-in-out infinite;
  pointer-events: none;
  will-change: transform;
}

.loader-gradient-orb--1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    var(--loader-accent, #00f3ff) 0%,
    transparent 70%
  );
  top: -200px;
  left: -200px;
  animation-delay: 0s;
}

.loader-gradient-orb--2 {
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    var(--loader-accent-secondary, #7000ff) 0%,
    transparent 70%
  );
  bottom: -150px;
  right: -150px;
  animation-delay: 2s;
  animation-duration: 10s;
}

@keyframes floatOrb {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

/* Spinner Rings */
.loader-spinner {
  position: absolute;
  width: 400px;
  height: 400px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
  isolation: isolate;
}

.loader-spinner-ring {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  animation: spin 8s linear infinite;

  &::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: var(--loader-accent-secondary, #7000ff);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--loader-accent-secondary, #7000ff);
    transform: translateX(-50%);
  }

  &.loader-spinner-ring--delayed {
    animation-duration: 12s;
    animation-direction: reverse;
    border-color: rgba(255, 255, 255, 0.03);

    &::before {
      background: var(--loader-accent, #00f3ff);
      box-shadow: 0 0 20px var(--loader-accent, #00f3ff);
      width: 8px;
      height: 8px;
    }
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Main Content */
.loader-content {
  width: 320px;
  max-width: 90%;
  text-align: center;
  position: relative;
  z-index: 10;
  transform: translateZ(0);
  isolation: isolate;
}

/* Logo */
.loader-logo {
  position: relative;
  margin-bottom: 2.5rem;
  display: inline-block;
}

.loader-logo-text {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--loader-text, #e0e0e0);
  letter-spacing: 4px;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
  z-index: 1;

  &::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(
      90deg,
      transparent,
      var(--loader-accent, #00f3ff),
      transparent
    );
    animation: scanline 2s infinite ease-in-out;
  }
}

.loader-logo-pulse {
  position: absolute;
  inset: -20px;
  border: 2px solid var(--loader-accent, #00f3ff);
  border-radius: 8px;
  opacity: 0;
  animation: pulse-border 2s ease-out infinite;
}

@keyframes scanline {
  0% {
    transform: translateX(-50%) scaleX(0);
    opacity: 0;
  }
  50% {
    transform: translateX(0) scaleX(1);
    opacity: 1;
  }
  100% {
    transform: translateX(50%) scaleX(0);
    opacity: 0;
  }
}

@keyframes pulse-border {
  0% {
    transform: scale(0.95);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.4;
  }
  100% {
    transform: scale(1.15);
    opacity: 0;
  }
}

/* Progress Bar */
.progress-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  margin-bottom: 1.25rem;
  box-shadow:
    inset 0 1px 3px rgba(0, 0, 0, 0.3),
    0 0 10px rgba(0, 243, 255, 0.1);
}

.progress-track-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 243, 255, 0.1),
    transparent
  );
  animation: track-shimmer 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes track-shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--loader-accent, #00f3ff),
    var(--loader-accent-secondary, #7000ff),
    var(--loader-accent, #00f3ff)
  );
  background-size: 200% 100%;
  border-radius: 3px;
  position: relative;
  box-shadow: 0 0 15px var(--loader-accent, #00f3ff);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: gradient-shift 2s ease infinite;

  &::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.2) 25%,
      transparent 25%,
      transparent 50%,
      rgba(255, 255, 255, 0.2) 50%,
      rgba(255, 255, 255, 0.2) 75%,
      transparent 75%,
      transparent
    );
    background-size: 20px 20px;
    animation: move-stripes 1s linear infinite;
    opacity: 0.3;
    border-radius: 3px;
  }
}

.progress-bar-glow {
  position: absolute;
  top: 50%;
  right: 0;
  width: 30px;
  height: 150%;
  background: radial-gradient(
    ellipse,
    rgba(255, 255, 255, 0.8) 0%,
    transparent 70%
  );
  transform: translateY(-50%);
  filter: blur(8px);
  animation: glow-pulse 1.5s ease-in-out infinite;
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes move-stripes {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 20px 20px;
  }
}

@keyframes glow-pulse {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

/* Status Info */
.loader-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.75rem;
  font-family: 'Courier New', Courier, monospace;
  gap: 1rem;

  .status-text {
    text-align: left;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .percentage {
    text-align: right;
    font-weight: bold;
    color: var(--loader-accent, #00f3ff);
    min-width: 45px;
    font-variant-numeric: tabular-nums;
  }
}

/* Loading Dots */
.loader-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 1.5rem;
  height: 8px;
}

.loader-dot {
  width: 8px;
  height: 8px;
  background: var(--loader-accent, #00f3ff);
  border-radius: 50%;
  animation: dot-bounce 1.4s ease-in-out infinite;
  box-shadow: 0 0 10px var(--loader-accent, #00f3ff);

  &:nth-child(1) {
    animation-delay: 0s;
  }
  &:nth-child(2) {
    animation-delay: 0.2s;
  }
  &:nth-child(3) {
    animation-delay: 0.4s;
  }
}

@keyframes dot-bounce {
  0%,
  80%,
  100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Responsive */
@media (width <= 768px) {
  .loader-spinner {
    width: 300px;
    height: 300px;
  }
  .loader-content {
    width: 280px;
  }
  .loader-logo-text {
    font-size: 2rem;
  }
  .loader-gradient-orb--1 {
    width: 300px;
    height: 300px;
  }
  .loader-gradient-orb--2 {
    width: 200px;
    height: 200px;
  }
}

@media (width <= 480px) {
  .loader-spinner {
    width: 250px;
    height: 250px;
  }
  .loader-content {
    width: 90%;
    max-width: 280px;
  }
  .loader-logo-text {
    font-size: 1.75rem;
    letter-spacing: 3px;
  }
  .loader-info {
    font-size: 0.8rem;
  }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  #app-loader,
  .loader-spinner-ring,
  .loader-grid,
  .loader-gradient-orb,
  .loader-logo-text::after,
  .loader-logo-pulse,
  .progress-bar,
  .progress-bar::after,
  .progress-bar-glow,
  .progress-track-glow,
  .loader-dot {
    animation: none !important;
    transition: none !important;
  }

  .loader-spinner-ring {
    opacity: 0.3;
  }
  .progress-bar {
    transition: width 0.3s linear;
  }
  .loader-gradient-orb {
    opacity: 0.05;
  }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: light) {
  #app-loader {
    background-color: #f5f5f5;
  }
  .loader-logo-text {
    color: #1a1a1a;
  }
  .loader-info {
    color: rgba(0, 0, 0, 0.6);
  }
  .progress-container {
    background: rgba(0, 0, 0, 0.08);
  }
  .loader-grid {
    background-image:
      linear-gradient(rgba(0, 0, 0, 0.02) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px);
  }
}

/* Print */
@media print {
  #app-loader {
    display: none !important;
  }
}