/* ============================== 
   Professional Preloader Styles
   ============================== */

.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1;
  visibility: visible;
}

/* Light mode background */
.preloader {
  background: linear-gradient(
    135deg,
    hsla(210, 17%, 98%, 1) 0%,
    hsla(210, 16%, 93%, 1) 100%
  );
}

/* Dark mode background */
body.dark .preloader {
  background: linear-gradient(
    135deg,
    hsla(0, 0%, 10%, 1) 0%,
    hsla(0, 0%, 18%, 1) 100%
  );
}

/* Preloader fade out animation */
.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Main spinner container */
.preloader-spinner {
  position: relative;
  width: 80px;
  height: 80px;
  margin-bottom: 30px;
}

/* Outer ring */
.spinner-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-radius: 50%;
  animation: spin 1.5s linear infinite;
}

/* Primary ring with gradient */
.spinner-ring.primary {
  border-top: 3px solid var(--skin-color);
  border-right: 3px solid hsla(var(--skin-hue), var(--skin-sat), var(--skin-light), 0.3);
  animation-duration: 1.5s;
}

/* Secondary ring with different timing */
.spinner-ring.secondary {
  border-top: 3px solid hsla(var(--skin-hue), var(--skin-sat), var(--skin-light), 0.6);
  border-left: 3px solid hsla(var(--skin-hue), var(--skin-sat), var(--skin-light), 0.2);
  animation-duration: 2s;
  animation-direction: reverse;
  transform: scale(0.8);
}

/* Inner dot */
.spinner-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  background: linear-gradient(
    135deg,
    var(--skin-color),
    var(--skin-color-end)
  );
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 2s ease-in-out infinite;
}

/* Loading text */
.preloader-text {
  font-family: "Poppins", sans-serif;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 15px;
  animation: textFade 2s ease-in-out infinite;
}

/* Light mode text */
.preloader-text {
  color: hsla(210, 9%, 31%, 1);
}

/* Dark mode text */
body.dark .preloader-text {
  color: hsla(210, 16%, 93%, 1);
}

/* Progress bar container */
.preloader-progress {
  width: 200px;
  height: 4px;
  background: hsla(0, 0%, 0%, 0.1);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

/* Dark mode progress background */
body.dark .preloader-progress {
  background: hsla(0, 0%, 100%, 0.1);
}

/* Progress bar fill */
.preloader-progress-bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--skin-color),
    var(--skin-color-end)
  );
  border-radius: 2px;
  width: 0%;
  animation: progressFill 3s ease-out infinite;
  position: relative;
}

/* Progress bar shine effect */
.preloader-progress-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    hsla(0, 0%, 100%, 0.4),
    transparent
  );
  animation: shine 2s ease-in-out infinite;
}

/* Cybersecurity themed elements */
.security-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.1;
}

.security-icon {
  position: absolute;
  font-size: 24px;
  color: var(--skin-color);
  animation: float 6s ease-in-out infinite;
}

.security-icon:nth-child(1) {
  top: 20%;
  left: 15%;
  animation-delay: 0s;
}

.security-icon:nth-child(2) {
  top: 30%;
  right: 20%;
  animation-delay: 1s;
}

.security-icon:nth-child(3) {
  bottom: 25%;
  left: 25%;
  animation-delay: 2s;
}

.security-icon:nth-child(4) {
  bottom: 35%;
  right: 15%;
  animation-delay: 3s;
}

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

@keyframes pulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.7;
  }
}

@keyframes textFade {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

@keyframes progressFill {
  0% {
    width: 0%;
  }
  70% {
    width: 85%;
  }
  100% {
    width: 100%;
  }
}

@keyframes shine {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.1;
  }
  25% {
    transform: translateY(-10px) rotate(90deg);
    opacity: 0.2;
  }
  50% {
    transform: translateY(-5px) rotate(180deg);
    opacity: 0.15;
  }
  75% {
    transform: translateY(-15px) rotate(270deg);
    opacity: 0.25;
  }
}

/* Mobile optimizations */
@media screen and (max-width: 768px) {
  .preloader-spinner {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
  }

  .preloader-text {
    font-size: 14px;
    letter-spacing: 1px;
  }

  .preloader-progress {
    width: 150px;
    height: 3px;
  }

  .security-elements {
    display: none; /* Hide floating elements on mobile for better performance */
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .preloader-spinner,
  .spinner-ring,
  .spinner-dot,
  .preloader-text,
  .preloader-progress-bar,
  .security-icon {
    animation: none;
  }

  .preloader-progress-bar {
    width: 100%;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .preloader {
    background: var(--bg-black-900);
  }

  .preloader-text {
    color: var(--text-black-900);
    font-weight: 700;
  }

  .spinner-ring.primary {
    border-top-color: var(--text-black-900);
  }
}