/* Pre-bundle app loader — must stay dependency-free (no Vuetify/Tailwind) */
:root {
  color-scheme: light;
  --loader-bg: #f4f6fb;
  --loader-primary: #4361ee;
  --loader-secondary: #6366f1;
  --loader-accent: #818cf8;
  --loader-text: #334155;
  --loader-muted: #64748b;
}

.app-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--loader-bg);
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

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

.app-loader__backdrop {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.app-loader__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: loader-orb-float 8s ease-in-out infinite;
}

.app-loader__orb--1 {
  top: 18%;
  left: 12%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.35) 0%, transparent 70%);
}

.app-loader__orb--2 {
  right: 10%;
  bottom: 16%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
  animation-delay: -3s;
}

.app-loader__orb--3 {
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.25) 0%, transparent 70%);
  animation-delay: -5s;
}

.app-loader__scene {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  animation: loader-scene-enter 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.app-loader__spinner {
  position: relative;
  width: 88px;
  height: 88px;
}

.app-loader__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid transparent;
}

.app-loader__ring--outer {
  border-top-color: var(--loader-primary);
  border-right-color: rgba(67, 97, 238, 0.25);
  animation: loader-spin 1.1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.app-loader__ring--middle {
  inset: 10px;
  border-bottom-color: var(--loader-secondary);
  border-left-color: rgba(99, 102, 241, 0.2);
  animation: loader-spin-reverse 0.85s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.app-loader__ring--inner {
  inset: 20px;
  border-top-color: var(--loader-accent);
  border-right-color: rgba(129, 140, 248, 0.15);
  animation: loader-spin 0.65s linear infinite;
}

.app-loader__core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--loader-primary), var(--loader-secondary));
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 20px rgba(67, 97, 238, 0.45),
    0 0 40px rgba(99, 102, 241, 0.2);
  animation: loader-pulse 1.4s ease-in-out infinite;
}

.app-loader__brand {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 28px;
  height: 28px;
  transform: translate(-50%, -50%);
  opacity: 0.9;
}

.app-loader__brand svg {
  width: 100%;
  height: 100%;
  display: block;
}

.app-loader__text {
  margin: 0;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--loader-text);
  text-transform: uppercase;
}

.app-loader__dots {
  display: inline-flex;
  width: 1.4em;
  margin-inline-start: 2px;
}

.app-loader__dots span {
  animation: loader-dot-bounce 1.2s ease-in-out infinite;
}

.app-loader__dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.app-loader__dots span:nth-child(3) {
  animation-delay: 0.3s;
}

.app-loader__bar {
  width: 160px;
  height: 3px;
  border-radius: 999px;
  background: rgba(67, 97, 238, 0.12);
  overflow: hidden;
}

.app-loader__bar-fill {
  width: 40%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--loader-primary), var(--loader-secondary));
  animation: loader-bar-slide 1.4s ease-in-out infinite;
}

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

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

@keyframes loader-pulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, -50%) scale(0.85);
    opacity: 0.75;
  }
}

@keyframes loader-orb-float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(24px, -18px) scale(1.05);
  }
  66% {
    transform: translate(-16px, 12px) scale(0.95);
  }
}

@keyframes loader-scene-enter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes loader-dot-bounce {
  0%,
  80%,
  100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-4px);
  }
}

@keyframes loader-bar-slide {
  0% {
    transform: translateX(-120%);
  }
  50% {
    transform: translateX(180%);
  }
  100% {
    transform: translateX(-120%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .app-loader__orb,
  .app-loader__ring,
  .app-loader__core,
  .app-loader__dots span,
  .app-loader__bar-fill,
  .app-loader__scene {
    animation: none;
  }

  .app-loader__scene {
    opacity: 1;
    transform: none;
  }
}