/* ============ PAGE TRANSITION ANIMATIONS ============ */
/* Smooth, fast, eye-friendly page transitions with modern effects */

/* Page fade transition - very subtle */
@keyframes pageEnter {
    0% {
        opacity: 0.95;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pageExit {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0.95;
        transform: translateY(-10px);
    }
}

/* Subtle slide from right */
@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Soft overlay curtain */
@keyframes overlayOpen {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

@keyframes overlayClose {
    0% {
        width: 100%;
    }
    100% {
        width: 0%;
    }
}

/* Shimmer effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Scale bounce */
@keyframes scaleBounce {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Rotate gradient */
@keyframes rotateGradient {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Main content wrapper */
main {
    animation: pageEnter 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* Page transition overlay - subtle fade only, NO flashing */
.page-transition-overlay {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0px;
    background: transparent;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
}

/* Removed - no flashing animations */

/* Navigation link hover state with smooth transition */
a, button {
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Navbar link active indicator animation */
.navbar-link {
    position: relative;
    transition: color 0.3s ease;
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #8B0000, #FFD700);
    transition: width 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.navbar-link.active::after {
    width: 100%;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Loading state animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Button interaction animations */
button:active,
a:active {
    transform: scale(0.98);
}

/* Subtle scale on hover for buttons */
.btn-primary,
.btn-ghost,
[class*="btn-"] {
    transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center;
}

.btn-primary:hover,
.btn-ghost:hover {
    transform: translateY(-2px);
}

.btn-primary:active,
.btn-ghost:active {
    transform: translateY(0);
}

/* Smooth color transitions */
* {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* Prevent animation on scroll */
* {
    scroll-behavior: smooth;
}

/* Content sections fade-in on scroll */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-section {
    animation: fadeInUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    opacity: 0;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    main {
        animation: pageEnter 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    }
    
    .page-transition-overlay {
        height: 2px;
        animation: pageLoadBar 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    }
}

/* Accessibility - reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* GPU acceleration for better performance */
main,
.page-transition-overlay {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Faster animations */
@media (prefers-reduced-motion: no-preference) {
    * {
        /* Use GPU for better performance */
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}