/**
 * senna Preloader Styles
 * Matches the unified interface design
 */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

/* Preloader Container */
.sfp-preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #0d353e;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.sfp-preloader.sfp-loaded {
  opacity: 0;
  visibility: hidden;
}

/* Animated mesh gradient background */
.sfp-mesh-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(at 40% 20%, #1b5059 0px, transparent 50%),
    radial-gradient(at 80% 0%, #164147 0px, transparent 50%),
    radial-gradient(at 0% 50%, #0a2a32 0px, transparent 50%),
    radial-gradient(at 80% 50%, #102b30 0px, transparent 50%),
    radial-gradient(at 0% 100%, #1b5059 0px, transparent 50%),
    radial-gradient(at 80% 100%, #164147 0px, transparent 50%);
  animation: sfpMeshMove 20s ease infinite;
  opacity: 0.7;
}

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

/* Content Wrapper */
.sfp-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 500px;
  padding: 2rem;
}

/* senna Logo */
.sfp-logo {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 3px;
  background: linear-gradient(
    90deg,
    #1b5059 0%,
    #6cffc4 25%,
    #1b5059 50%,
    #6cffc4 75%,
    #1b5059 100%
  );
  background-size: 400% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: sfpShimmer 4s linear infinite;
  margin-bottom: 2rem;
  filter: drop-shadow(0 0 30px rgba(108, 255, 196, 0.3));
  opacity: 0;
  transform: translateY(20px);
  animation: sfpShimmer 4s linear infinite, sfpFadeInUp 0.6s ease 0.2s forwards;
}

@keyframes sfpShimmer {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 400% center;
  }
}

@keyframes sfpFadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Progress Bar Container */
.sfp-progress-container {
  width: 100%;
  max-width: 300px;
  height: 4px;
  background-color: rgba(108, 255, 196, 0.1);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  margin: 0 auto 1.5rem;
  opacity: 0;
  transform: scaleX(0.8);
  animation: sfpFadeInScale 0.4s ease 0.4s forwards;
}

@keyframes sfpFadeInScale {
  to {
    opacity: 1;
    transform: scaleX(1);
  }
}

/* Progress Bar */
.sfp-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #6cffc4 0%, #4acc9f 50%, #6cffc4 100%);
  background-size: 200% auto;
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
  animation: sfpGradientMove 2s linear infinite;
  box-shadow: 0 0 20px rgba(108, 255, 196, 0.5);
}

@keyframes sfpGradientMove {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* Progress Glow Effect */
.sfp-progress-bar::after {
  content: "";
  position: absolute;
  top: -10px;
  right: -10px;
  bottom: -10px;
  left: -10px;
  background: inherit;
  filter: blur(20px);
  opacity: 0.5;
  z-index: -1;
}

/* Powered by Text */
.sfp-powered-by {
  color: #6cffc4;
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 2px;
  opacity: 0;
  transform: translateY(10px);
  animation: sfpFadeInUp 0.6s ease 0.6s forwards;
}

/* Loading Percentage */
.sfp-percentage {
  position: absolute;
  top: -30px;
  right: 0;
  font-size: 0.75rem;
  color: #6cffc4;
  font-weight: 500;
  opacity: 0;
  animation: sfpFadeIn 0.3s ease 0.5s forwards;
}

@keyframes sfpFadeIn {
  to {
    opacity: 1;
  }
}

/* Loading Dots Animation */
.sfp-loading-dots {
  display: inline-flex;
  margin-left: 8px;
}

.sfp-loading-dots span {
  width: 6px;
  height: 6px;
  background-color: #6cffc4;
  border-radius: 50%;
  margin: 0 2px;
  opacity: 0.3;
  animation: sfpDotPulse 1.4s ease-in-out infinite;
}

.sfp-loading-dots span:nth-child(1) {
  animation-delay: 0s;
}

.sfp-loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.sfp-loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes sfpDotPulse {
  0%,
  80%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  40% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* Responsive Styles */
@media (max-width: 768px) {
  .sfp-logo {
    font-size: 2.5rem;
    letter-spacing: 2px;
  }

  .sfp-powered-by {
    font-size: 1rem;
  }

  .sfp-progress-container {
    max-width: 250px;
  }
}

@media (max-width: 480px) {
  .sfp-logo {
    font-size: 2rem;
    letter-spacing: 1px;
  }

  .sfp-powered-by {
    font-size: 0.9rem;
    letter-spacing: 1px;
  }

  .sfp-content {
    padding: 1.5rem;
  }
}

/* High Performance Mode - Reduced animations for slower devices */
@media (prefers-reduced-motion: reduce) {
  .sfp-mesh-gradient,
  .sfp-logo,
  .sfp-progress-bar,
  .sfp-loading-dots span {
    animation: none;
  }

  .sfp-logo {
    opacity: 1;
    transform: none;
  }

  .sfp-progress-container {
    opacity: 1;
    transform: none;
  }

  .sfp-powered-by {
    opacity: 1;
    transform: none;
  }

  .sfp-percentage {
    opacity: 1;
  }
}