/* ======================== background-animations-advanced ====================================== */
/* Organic blobs */
.qa-bg-blob {
  position: absolute;
  width: 400px;
  height: 400px;
  opacity: 0.15;
  will-change: transform;
}

[data-bs-theme="dark"] .qa-bg-blob {
  opacity: 0.2;
}

.qa-bg-blob--1 {
  top: -100px;
  right: -100px;
  animation: qa-float-slow 25s ease-in-out infinite;
}

.qa-bg-blob--2 {
  bottom: -50px;
  left: -50px;
  animation: qa-float-medium 20s ease-in-out infinite 5s;
}

/* Fluid waves */
.qa-bg-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 200px;
  opacity: 0.5;
}

/* Isometric grid */
.qa-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
}

[data-bs-theme="dark"] .qa-bg-grid {
  opacity: 0.15;
}

/* Particle network */
.qa-bg-network {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 60%;
  opacity: 0.3;
  max-width: 800px;
  max-height: 600px;
}

[data-bs-theme="dark"] .qa-bg-network {
  opacity: 0.4;
}

/* Responsive advanced SVGs */
@media (max-width: 768px) {
  .qa-bg-blob {
    width: 250px;
    height: 250px;
  }

  .qa-bg-wave,
  .qa-bg-network {
    display: none;
  }

  .qa-bg-grid {
    opacity: 0.05;
  }
}

/* ============================================================== */
.qa-background-animations {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
  opacity: 0.5;
  transition: opacity 0.5s ease;
}

[data-bs-theme="dark"] .qa-background-animations {
  opacity: 0.35;
}

[data-qa-theme="bright-playful"] .qa-background-animations {
  opacity: 0.78;
}

.qa-main,
.site-footer,
.card,
.navbar {
  position: relative;
  z-index: 1;
  background-clip: padding-box;
}

.qa-bg-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

/* Geometric Shapes */
.qa-bg-shape {
  position: absolute;
  opacity: 0.2;
  will-change: transform;
}

[data-bs-theme="dark"] .qa-bg-shape {
  opacity: 0.28;
}

[data-qa-theme="bright-playful"] .qa-bg-shape {
  opacity: 0.36;
  filter: saturate(1.4) blur(0.2px);
}

.qa-bg-shape--circle-1 {
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9 0%, var(--primary, #46178f) 100%);
  top: -120px;
  right: -120px;
  animation: qa-float-rotate 18s ease-in-out infinite;
  filter: blur(0.5px);
}

.qa-bg-shape--circle-2 {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary, #46178f) 0%, #fbbf24 100%);
  top: 12%;
  left: -80px;
  animation: qa-float-rotate-reverse 16s ease-in-out infinite 2s;
  filter: blur(0.5px);
}

.qa-bg-shape--circle-3 {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fbbf24 0%, var(--danger, #e21b3c) 100%);
  top: 38%;
  right: 8%;
  animation: qa-float-rotate 14s ease-in-out infinite 1s;
}

.qa-bg-shape--circle-4 {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--danger, #e21b3c) 0%, #0ea5e9 100%);
  bottom: 8%;
  left: 6%;
  animation: qa-float-rotate-reverse 20s ease-in-out infinite 3s;
  filter: blur(0.5px);
}

.qa-bg-shape--circle-5 {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(135deg, #06b6d4 0%, var(--primary-light, #6a28cc) 50%, #8b5cf6 100%);
  bottom: -100px;
  right: 12%;
  animation: qa-float-rotate 22s ease-in-out infinite 4s;
  filter: blur(0.5px);
}

/* Dark Theme */
[data-bs-theme="dark"] .qa-bg-shape--circle-1 {
  background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 50%, var(--primary-light, #6a28cc) 100%);
}

[data-bs-theme="dark"] .qa-bg-shape--circle-2 {
  background: linear-gradient(135deg, var(--primary-light, #6a28cc) 0%, #3b82f6 100%);
}

[data-bs-theme="dark"] .qa-bg-shape--circle-3 {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
}

[data-bs-theme="dark"] .qa-bg-shape--circle-4 {
  background: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 50%, #0ea5e9 100%);
}

[data-bs-theme="dark"] .qa-bg-shape--circle-5 {
  background: linear-gradient(135deg, #0ea5e9 0%, var(--primary-light, #6a28cc) 50%, #3b82f6 100%);
}

/* Light theme needs stronger saturation so shapes remain visible on the pale canvas. */
[data-qa-theme="bright-playful"] .qa-bg-shape--circle-1 {
  background: linear-gradient(135deg, #ff7a1a 0%, #ef4444 45%, #8b5cf6 100%);
}

[data-qa-theme="bright-playful"] .qa-bg-shape--circle-2 {
  background: linear-gradient(135deg, #7c3aed 0%, #ff8a00 100%);
}

[data-qa-theme="bright-playful"] .qa-bg-shape--circle-3 {
  background: linear-gradient(135deg, #ffb000 0%, #ff4f8b 100%);
}

[data-qa-theme="bright-playful"] .qa-bg-shape--circle-4 {
  background: linear-gradient(135deg, #ff4d00 0%, #06b6d4 100%);
}

[data-qa-theme="bright-playful"] .qa-bg-shape--circle-5 {
  background: linear-gradient(135deg, #0ea5e9 0%, #7c3aed 55%, #ff4d00 100%);
}

/* Animated Symbols */
.qa-bg-symbol {
  position: absolute;
  font-weight: 300;
  opacity: 0.14;
  will-change: transform, opacity;
}

[data-bs-theme="dark"] .qa-bg-symbol {
  opacity: 0.2;
}

[data-qa-theme="bright-playful"] .qa-bg-symbol {
  opacity: 0.28;
  font-weight: 500;
  text-shadow: 0 2px 10px rgba(124, 58, 237, 0.16);
}

.qa-bg-symbol--plus-1 {
  font-size: 4rem;
  color: var(--primary, #46178f);
  top: 18%;
  right: 12%;
  animation: qa-pulse-enhanced 5s ease-in-out infinite;
}

.qa-bg-symbol--plus-2 {
  font-size: 3rem;
  color: #0ea5e9;
  top: 58%;
  left: 10%;
  animation: qa-pulse-enhanced 5s ease-in-out infinite 1s;
}

.qa-bg-symbol--plus-3 {
  font-size: 3.5rem;
  color: #fbbf24;
  bottom: 22%;
  right: 22%;
  animation: qa-pulse-enhanced 5s ease-in-out infinite 2s;
}

.qa-bg-symbol--triangle-1 {
  font-size: 3rem;
  color: var(--danger, #e21b3c);
  top: 32%;
  left: 18%;
  animation: qa-rotate-pulse 12s ease-in-out infinite;
}

.qa-bg-symbol--triangle-2 {
  font-size: 2.5rem;
  color: #06b6d4;
  bottom: 12%;
  right: 38%;
  animation: qa-rotate-pulse 10s ease-in-out infinite reverse;
}

/* SVG Curves */
.qa-bg-curve {
  position: absolute;
  opacity: 0.12;
  stroke-width: 3;
  fill: none;
  will-change: transform;
}

[data-bs-theme="dark"] .qa-bg-curve {
  opacity: 0.18;
}

[data-qa-theme="bright-playful"] .qa-bg-curve {
  opacity: 0.26;
  stroke-width: 4;
  filter: drop-shadow(0 2px 5px rgba(124, 58, 237, 0.12));
}

.qa-bg-curve--1 {
  top: 10%;
  left: 5%;
  color: var(--primary, #46178f);
  animation: qa-draw-path 8s ease-in-out infinite alternate;
}

.qa-bg-curve--2 {
  bottom: 20%;
  right: 10%;
  color: #0ea5e9;
  animation: qa-draw-path 10s ease-in-out infinite alternate-reverse;
}

/* Floating Particles */
.qa-bg-particle {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  opacity: 0.25;
  will-change: transform;
  box-shadow: 0 0 8px currentColor;
}

[data-bs-theme="dark"] .qa-bg-particle {
  opacity: 0.35;
}

[data-qa-theme="bright-playful"] .qa-bg-particle {
  display: block !important;
  width: 12px !important;
  height: 12px !important;
  opacity: 0.36 !important;
  box-shadow: none !important;
  filter: none !important;
}

.qa-bg-particle--1 {
  background: var(--primary, #46178f);
  top: 25%;
  left: 30%;
  animation: qa-particle-float 15s ease-in-out infinite;
}

.qa-bg-particle--2 {
  background: #0ea5e9;
  top: 50%;
  right: 20%;
  animation: qa-particle-float 18s ease-in-out infinite 2s;
}

.qa-bg-particle--3 {
  background: #fbbf24;
  bottom: 30%;
  left: 40%;
  animation: qa-particle-float 20s ease-in-out infinite 4s;
}

.qa-bg-particle--4 {
  background: var(--danger, #e21b3c);
  top: 70%;
  right: 35%;
  animation: qa-particle-float 16s ease-in-out infinite 1s;
}

.qa-bg-particle--5 {
  background: #06b6d4;
  top: 15%;
  left: 60%;
  animation: qa-particle-float 14s ease-in-out infinite 3s;
}

[data-qa-theme="bright-playful"] .qa-bg-particle--1 {
  color: #7c3aed !important;
  background: rgba(124, 58, 237, 0.38) !important;
  animation-name: qa-particle-float-subtle !important;
}

[data-qa-theme="bright-playful"] .qa-bg-particle--2 {
  color: #0ea5e9 !important;
  background: rgba(14, 165, 233, 0.38) !important;
  animation-name: qa-particle-float-subtle !important;
}

[data-qa-theme="bright-playful"] .qa-bg-particle--3 {
  color: #f59e0b !important;
  background: rgba(245, 158, 11, 0.36) !important;
  animation-name: qa-particle-float-subtle !important;
}

[data-qa-theme="bright-playful"] .qa-bg-particle--4 {
  color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.34) !important;
  animation-name: qa-particle-float-subtle !important;
}

[data-qa-theme="bright-playful"] .qa-bg-particle--5 {
  color: #06b6d4 !important;
  background: rgba(6, 182, 212, 0.38) !important;
  animation-name: qa-particle-float-subtle !important;
}

/* Keyframe Animations */
@keyframes qa-float-rotate {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  25% {
    transform: translate(20px, -40px) rotate(8deg) scale(1.05);
  }
  50% {
    transform: translate(-10px, -70px) rotate(0deg) scale(1);
  }
  75% {
    transform: translate(-30px, -35px) rotate(-8deg) scale(0.95);
  }
}

@keyframes qa-float-rotate-reverse {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  25% {
    transform: translate(-20px, 40px) rotate(-8deg) scale(1.05);
  }
  50% {
    transform: translate(10px, 70px) rotate(0deg) scale(1);
  }
  75% {
    transform: translate(30px, 35px) rotate(8deg) scale(0.95);
  }
}

@keyframes qa-pulse-enhanced {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.12;
  }
  50% {
    transform: scale(1.4) rotate(5deg);
    opacity: 0.22;
  }
}

[data-bs-theme="dark"] @keyframes qa-pulse-enhanced {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.18;
  }
  50% {
    transform: scale(1.4) rotate(5deg);
    opacity: 0.3;
  }
}

@keyframes qa-rotate-pulse {
  0%, 100% {
    transform: rotate(0deg) scale(1);
    opacity: 0.12;
  }
  25% {
    transform: rotate(90deg) scale(1.1);
    opacity: 0.18;
  }
  50% {
    transform: rotate(180deg) scale(1);
    opacity: 0.15;
  }
  75% {
    transform: rotate(270deg) scale(1.1);
    opacity: 0.18;
  }
}

@keyframes qa-draw-path {
  0% {
    stroke-dashoffset: 1000;
    opacity: 0.05;
  }
  50% {
    opacity: 0.12;
  }
  100% {
    stroke-dashoffset: 0;
    opacity: 0.05;
  }
}

@keyframes qa-particle-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.25;
  }
  25% {
    transform: translate(50px, -70px) scale(1.2);
    opacity: 0.5;
  }
  50% {
    transform: translate(-30px, -130px) scale(1);
    opacity: 0.35;
  }
  75% {
    transform: translate(-70px, -90px) scale(1.1);
    opacity: 0.45;
  }
}

@keyframes qa-particle-float-subtle {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.02;
  }
  25% {
    transform: translate(50px, -70px) scale(1.06);
    opacity: 0.045;
  }
  50% {
    transform: translate(-30px, -130px) scale(1);
    opacity: 0.03;
  }
  75% {
    transform: translate(-70px, -90px) scale(1.03);
    opacity: 0.035;
  }
}

[data-bs-theme="dark"] @keyframes qa-particle-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.35;
  }
  25% {
    transform: translate(50px, -70px) scale(1.2);
    opacity: 0.6;
  }
  50% {
    transform: translate(-30px, -130px) scale(1);
    opacity: 0.45;
  }
  75% {
    transform: translate(-70px, -90px) scale(1.1);
    opacity: 0.55;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .qa-background-animations {
    opacity: 0.3;
  }

  [data-bs-theme="dark"] .qa-background-animations {
    opacity: 0.2;
  }

  [data-qa-theme="bright-playful"] .qa-background-animations {
    opacity: 0.58;
  }

  .qa-bg-shape--circle-1,
  .qa-bg-shape--circle-5 {
    width: 250px;
    height: 250px;
  }

  .qa-bg-shape--circle-2,
  .qa-bg-shape--circle-4 {
    width: 180px;
    height: 180px;
  }

  .qa-bg-shape--circle-3 {
    width: 130px;
    height: 130px;
  }

  .qa-bg-symbol--plus-1,
  .qa-bg-symbol--triangle-1 {
    font-size: 3rem;
  }

  .qa-bg-symbol--plus-2 {
    font-size: 2.5rem;
  }

  .qa-bg-symbol--plus-3,
  .qa-bg-symbol--triangle-2,
  .qa-bg-particle--4,
  .qa-bg-particle--5 {
    display: none;
  }
}

/* Reduced Motion Preference */
@media (prefers-reduced-motion: reduce) {
  .qa-background-animations * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Performance Optimization */
.qa-bg-shape,
.qa-bg-symbol,
.qa-bg-curve,
.qa-bg-particle {
  transform: translateZ(0);
  backface-visibility: hidden;
}