/* Premium Page Preloader & Transitions */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background-color: var(--primary);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

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

.preloader-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.loader-logo {
  width: 150px;
  height: 150px;
  margin-bottom: 30px;
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
  animation-delay: 0.2s;
}

.loader-text {
  font-size: 1.2rem;
  color: var(--white);
  letter-spacing: 2px;
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
  animation-delay: 0.4s;
}

.loader-spinner {
  position: relative;
  width: 120px;
  height: 120px;
  margin-top: 20px;
}

.spinner-circle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 4px solid transparent;
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}

.spinner-circle:nth-child(2) {
  border-top-color: transparent;
  border-right-color: var(--accent);
  animation: spin 1.2s linear infinite reverse;
}

.spinner-circle:nth-child(3) {
  width: 80px;
  height: 80px;
  top: 20px;
  left: 20px;
  border-top-color: transparent;
  border-left-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

.spinner-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background-color: var(--accent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' font-family='Arial' font-weight='bold' font-size='30'%3ERPM%3C/text%3E%3C/svg%3E");
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' font-family='Arial' font-weight='bold' font-size='30'%3ERPM%3C/text%3E%3C/svg%3E");
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-position: center;
  animation: pulse 2s ease-in-out infinite;
}

.progress-bar {
  position: absolute;
  bottom: -40px;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  border-radius: 2px;
}

.progress-fill {
  height: 100%;
  width: 0;
  background-color: var(--accent);
  transition: width 0.2s ease;
}

/* Page Transition Effects */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--primary);
  z-index: 999;
  transform: translateY(100%);
  pointer-events: none;
}

.page-transition.active {
  animation: pageTransition 1.5s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

.page-content {
  opacity: 0;
  animation: fadeContent 0.5s ease forwards;
  animation-delay: 1.5s;
}

/* Animations */
@keyframes fadeIn {
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0% { opacity: 0.6; transform: translate(-50%, -50%) scale(0.95); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
  100% { opacity: 0.6; transform: translate(-50%, -50%) scale(0.95); }
}

@keyframes pageTransition {
  0% { transform: translateY(100%); }
  100% { transform: translateY(-100%); }
}

@keyframes fadeContent {
  0% { opacity: 0; }
  100% { opacity: 1; }
}