/* Page Transition Animations */
/* ========================== */

/* Loading Animation Styles */
#page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease-in-out, visibility 0.4s ease-in-out;
}

#page-loader.loading {
    opacity: 1;
    visibility: visible;
}

#page-loader.fade-out {
    opacity: 0;
    visibility: hidden;
}

/* Animated Loading Spinner */
.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1.2s linear infinite;
    margin-bottom: 20px;
}

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

/* Loading Text Animation */
.loader-text {
    color: white;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out 0.3s forwards;
}

.loader-subtext {
    color: rgba(255, 255, 255, 0.8);
    font-family: 'Poppins', sans-serif;
    font-weight: 300;
    font-size: 0.9rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out 0.6s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Progress Bar */
.loader-progress {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 15px;
}

.loader-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.8));
    width: 0%;
    border-radius: 2px;
    animation: progressFill 2s ease-out forwards;
}

@keyframes progressFill {
    0% { width: 0%; }
    50% { width: 60%; }
    100% { width: 100%; }
}

/* Page Content Transition */
.page-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.page-content.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth Page Transitions */
.page-transition-out {
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.4s ease-in, transform 0.4s ease-in;
}

.page-transition-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* Enhanced Loading States */
#page-loader.loading .loader-spinner {
    animation: spin 1.2s linear infinite;
}

#page-loader.loading .loader-text {
    animation: pulse 2s ease-in-out infinite;
}

@-pulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .loader-spinner {
        width: 50px;
        height: 50px;
        border-width: 3px;
    }
    
    .loader-text {
        font-size: 1rem;
    }
    
    .loader-subtext {
        font-size: 0.8rem;
    }
    
    .loader-progress {
        width: 150px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    #page-loader,
    .loader-spinner,
    .loader-text,
    .loader-subtext,
    .loader-progress-bar,
    .page-content {
        animation: none;
        transition: none;
    }
    
    .page-content.loaded {
        opacity: 1;
        transform: none;
    }
}

/* Dark Theme Support */
.dark #page-loader {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.dark .loader-spinner {
    border-color: rgba(255, 255, 255, 0.1);
    border-top-color: #667eea;
}

.dark .loader-text {
    color: #e2e8f0;
}

.dark .loader-subtext {
    color: rgba(255, 255, 255, 0.6);
}

/* Additional Smooth Animations for Elements */
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Animation for multiple elements */
.fade-in-element:nth-child(1) { transition-delay: 0.1s; }
.fade-in-element:nth-child(2) { transition-delay: 0.2s; }
.fade-in-element:nth-child(3) { transition-delay: 0.3s; }
.fade-in-element:nth-child(4) { transition-delay: 0.4s; }
.fade-in-element:nth-child(5) { transition-delay: 0.5s; }