/* CafeET — Full-Screen Enterprise POS Boot Loader */

.pos-loader,
.loader {
  --pl-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pl-brown: #6b320f;
  --pl-teal: #008b9e;
  --pl-green: #16a34a;
  --pl-green-glow: rgba(22, 163, 74, 0.45);
  --pl-bg: #f8f4f0;
  --pl-fg: #1e130c;
  --pl-muted: #6f6258;
  --pl-border: rgba(229, 211, 193, 0.65);
  --pl-glass: rgba(255, 252, 250, 0.72);
  --pl-status-h: 56px;

  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;

  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  background: var(--pl-bg);
  color: var(--pl-fg);
  opacity: 1;
  visibility: visible;
  overflow: hidden;
  transition: opacity 0.28s var(--pl-ease), visibility 0.28s var(--pl-ease);
}

[data-theme='dark'] .pos-loader,
[data-theme='dark'] .loader {
  --pl-bg: #14100c;
  --pl-fg: #f8f4f0;
  --pl-muted: #c4b5a8;
  --pl-border: rgba(74, 61, 53, 0.75);
  --pl-glass: rgba(30, 22, 16, 0.82);
}

.pos-loader.exiting,
.loader.exiting {
  opacity: 0;
}

.pos-loader.hidden,
.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Animated background */
.pos-loader-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.pos-loader-bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(0, 139, 158, 0.09), transparent 55%),
    radial-gradient(ellipse 60% 50% at 85% 75%, rgba(107, 50, 15, 0.07), transparent 50%),
    radial-gradient(ellipse 50% 40% at 10% 60%, rgba(0, 139, 158, 0.05), transparent 45%),
    linear-gradient(175deg, #fdfbf8 0%, var(--pl-bg) 50%, #f0ebe4 100%);
  animation: pl-bg-shift 12s ease-in-out infinite alternate;
}

[data-theme='dark'] .pos-loader-bg-gradient {
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(0, 139, 158, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 50% at 85% 75%, rgba(107, 50, 15, 0.1), transparent 50%),
    linear-gradient(175deg, #1a120c 0%, #14100c 100%);
}

@keyframes pl-bg-shift {
  0% { transform: scale(1) translate3d(0, 0, 0); }
  100% { transform: scale(1.04) translate3d(0, -1%, 0); }
}

.pos-loader-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(107, 50, 15, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 50, 15, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 15%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 15%, transparent 75%);
}

[data-theme='dark'] .pos-loader-grid {
  background-image:
    linear-gradient(rgba(223, 201, 181, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(223, 201, 181, 0.05) 1px, transparent 1px);
}

.pos-loader-particles {
  position: absolute;
  inset: 0;
}

.pos-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--pl-teal);
  opacity: 0;
  animation: pl-particle-float var(--dur, 6s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
  will-change: transform, opacity;
}

@keyframes pl-particle-float {
  0%, 100% { opacity: 0; transform: translate3d(0, 0, 0) scale(0.5); }
  20% { opacity: 0.35; }
  50% { opacity: 0.2; transform: translate3d(var(--dx, 20px), var(--dy, -40px), 0) scale(1); }
  80% { opacity: 0.1; }
}

/* Main content */
.pos-loader-main {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem calc(var(--pl-status-h) + 1.5rem);
  gap: clamp(1.25rem, 3vh, 2rem);
  min-height: 0;
}

/* Brand */
.pos-loader-brand {
  text-align: center;
  animation: pl-brand-in 0.45s var(--pl-ease) both;
}

@keyframes pl-brand-in {
  from { opacity: 0; transform: translate3d(0, 16px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

.pos-loader-logo {
  max-height: clamp(48px, 8vh, 72px);
  width: auto;
  margin: 0 auto 1rem;
  filter: drop-shadow(0 4px 16px rgba(107, 50, 15, 0.12));
}

.pos-loader-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--pl-brown);
  margin-bottom: 0.3rem;
}

[data-theme='dark'] .pos-loader-title {
  color: #dfc9b5;
}

.pos-loader-subtitle {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pl-muted);
}

/* Network visualization */
.pos-loader-visual {
  width: min(420px, 92vw);
  flex-shrink: 0;
  animation: pl-visual-in 0.5s var(--pl-ease) 0.08s both;
}

@keyframes pl-visual-in {
  from { opacity: 0; transform: translate3d(0, 12px, 0) scale(0.96); }
  to { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
}

.pos-network-svg {
  width: 100%;
  height: auto;
  display: block;
}

.pos-net-line {
  fill: none;
  stroke: url(#pos-line-grad);
  stroke-width: 1.5;
  stroke-linecap: round;
  opacity: 0.35;
  stroke-dasharray: 6 8;
  animation: pl-line-flow 3s linear infinite;
}

.pos-net-line.is-active {
  opacity: 0.75;
  stroke-width: 2;
  filter: drop-shadow(0 0 4px rgba(0, 139, 158, 0.35));
}

@keyframes pl-line-flow {
  to { stroke-dashoffset: -28; }
}

.pos-net-packet {
  fill: var(--pl-teal);
  opacity: 0.9;
}

.pos-net-node {
  cursor: default;
}

.pos-net-node-circle {
  fill: var(--pl-glass);
  stroke: var(--pl-border);
  stroke-width: 1.5;
  transition: stroke 0.4s ease, filter 0.4s ease;
}

.pos-net-node.is-active .pos-net-node-circle {
  stroke: var(--pl-teal);
  filter: drop-shadow(0 0 8px rgba(0, 139, 158, 0.35));
}

.pos-net-node.is-synced .pos-net-node-circle {
  stroke: var(--pl-green);
  filter: drop-shadow(0 0 6px var(--pl-green-glow));
}

.pos-net-node-label {
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  fill: var(--pl-muted);
  text-anchor: middle;
}

.pos-net-node.is-active .pos-net-node-label,
.pos-net-node.is-synced .pos-net-node-label {
  fill: var(--pl-fg);
}

/* Boot sequence */
.pos-loader-boot {
  width: min(480px, 94vw);
  animation: pl-boot-in 0.5s var(--pl-ease) 0.12s both;
}

@keyframes pl-boot-in {
  from { opacity: 0; transform: translate3d(0, 10px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

.pos-loader-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
  min-height: 1.5rem;
}

.pos-loader-stage-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: rgba(138, 125, 116, 0.2);
  transition: background 0.35s var(--pl-ease), transform 0.35s var(--pl-ease);
}

.pos-loader-stage-icon.is-spinning::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(107, 50, 15, 0.15);
  border-top-color: var(--pl-teal);
  animation: pl-spin 0.65s linear infinite;
}

.pos-loader-stage-icon.is-done {
  background: var(--pl-green);
  color: #fff;
  font-size: 0.65rem;
  animation: pl-check-pop 0.4s var(--pl-ease);
}

@keyframes pl-spin {
  to { transform: rotate(360deg); }
}

@keyframes pl-check-pop {
  0% { transform: scale(0.6); }
  70% { transform: scale(1.12); }
  100% { transform: scale(1); }
}

.pos-loader-stage-text {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--pl-fg);
  transition: opacity 0.2s ease;
}

.pos-loader-stage-text.is-fading {
  opacity: 0;
}

.pos-loader-steps {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem 1rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s var(--pl-ease), opacity 0.4s ease, margin 0.4s ease;
}

.pos-loader-steps.is-visible {
  max-height: 200px;
  opacity: 1;
  margin-bottom: 1rem;
}

.pos-loader-step {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--pl-muted);
  opacity: 0.45;
  transform: translate3d(0, 4px, 0);
  transition: opacity 0.35s ease, color 0.35s ease, transform 0.35s var(--pl-ease);
}

.pos-loader-step.is-done {
  opacity: 1;
  color: var(--pl-green);
  transform: translate3d(0, 0, 0);
}

.pos-loader-step-check {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  background: rgba(138, 125, 116, 0.15);
  color: transparent;
  flex-shrink: 0;
  transition: background 0.3s ease, color 0.3s ease;
}

.pos-loader-step.is-done .pos-loader-step-check {
  background: var(--pl-green);
  color: #fff;
}

/* Progress bar */
.pos-loader-progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.pos-loader-progress-track {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: rgba(107, 50, 15, 0.1);
  position: relative;
  overflow: hidden;
}

[data-theme='dark'] .pos-loader-progress-track {
  background: rgba(255, 255, 255, 0.08);
}

.pos-loader-progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pl-brown), var(--pl-teal));
  transition: width 0.55s var(--pl-ease);
  will-change: width;
}

.pos-loader-progress-glow {
  position: absolute;
  top: 50%;
  width: 48px;
  height: 20px;
  margin-top: -10px;
  margin-left: -24px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 139, 158, 0.5), transparent 70%);
  opacity: 0;
  pointer-events: none;
  transition: left 0.55s var(--pl-ease), opacity 0.3s ease;
  will-change: left, opacity;
}

.pos-loader-progress-glow.is-visible {
  opacity: 1;
}

.pos-loader-progress-pct {
  font-size: 0.875rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--pl-brown);
  min-width: 3ch;
  text-align: right;
}

[data-theme='dark'] .pos-loader-progress-pct {
  color: #dfc9b5;
}

.pos-loader-progress-pct.is-ready {
  color: var(--pl-green);
}

/* Bottom status bar */
.pos-loader-statusbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: var(--pl-status-h);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  padding: 0 1.25rem;
  background: var(--pl-glass);
  border-top: 1px solid var(--pl-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  animation: pl-status-in 0.45s var(--pl-ease) 0.15s both;
}

@keyframes pl-status-in {
  from { opacity: 0; transform: translate3d(0, 100%, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

.pos-loader-status-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
}

.pos-loader-status-label {
  color: var(--pl-muted);
  font-weight: 500;
}

.pos-loader-status-value {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  color: var(--pl-muted);
  transition: color 0.4s ease;
}

.pos-loader-status-item.is-live .pos-loader-status-value {
  color: var(--pl-green);
}

.pos-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pl-muted);
  opacity: 0.5;
  transition: background 0.4s ease, box-shadow 0.4s ease, opacity 0.4s ease;
}

.pos-loader-status-item.is-live .pos-status-dot {
  background: var(--pl-green);
  opacity: 1;
  animation: pl-status-pulse 2s ease-in-out infinite;
}

@keyframes pl-status-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--pl-green-glow); }
  50% { box-shadow: 0 0 0 5px transparent; }
}

/* Hide main app during load */
body.loading main,
body.loading .nav,
body.loading .back-to-top {
  opacity: 0;
}

main,
.nav,
.back-to-top {
  transition: opacity 0.45s var(--pl-ease) 0.06s;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .pos-loader-bg-gradient,
  .pos-particle,
  .pos-net-line,
  .pos-loader-status-item.is-live .pos-status-dot,
  .pos-loader-stage-icon.is-spinning::after {
    animation: none !important;
  }

  .pos-loader-brand,
  .pos-loader-visual,
  .pos-loader-boot,
  .pos-loader-statusbar {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .pos-loader-progress-fill,
  .pos-loader-progress-glow,
  .pos-loader,
  .loader {
    transition-duration: 0.2s !important;
  }
}

@media (max-width: 640px) {
  .pos-loader-steps {
    grid-template-columns: 1fr;
  }

  .pos-loader-statusbar {
    height: auto;
    min-height: var(--pl-status-h);
    padding: 0.65rem 1rem;
    gap: 0.4rem 1rem;
  }

  .pos-loader-status-item {
    font-size: 0.6875rem;
  }

  .pos-loader-main {
    padding-bottom: calc(var(--pl-status-h) + 2.5rem);
  }
}

@media (max-width: 400px) {
  .pos-loader-statusbar {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }
}