/* Custom CSS styles */
/* Smooth animations and transitions */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Animated background pattern */
.animated-bg {
    background: linear-gradient(-45deg, #0d9488, #14b8a6, #2dd4bf, #5eead4);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    position: relative;
    overflow: hidden;
}

.animated-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255,255,255,0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

/* Hero section image fade-in */
@keyframes fadeInImage {
    from {
        opacity: 0;
        transform: scale(1.1);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

section img[alt*="Museum artifacts"] {
    animation: fadeInImage 1.5s ease-out;
}

/* Logo styling */
nav img {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: transform 0.3s ease;
}

nav img:hover {
    transform: scale(1.05);
}

/* Ensure logo doesn't get too large on mobile */
@media (max-width: 640px) {
    nav img {
        max-height: 3rem;
    }
}

/* Decorative shapes */
.decorative-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 15s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: #0d9488;
    top: -150px;
    right: -150px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: #14b8a6;
    bottom: -100px;
    left: -100px;
    animation-delay: 2s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: #2dd4bf;
    top: 50%;
    right: 10%;
    animation-delay: 4s;
}

/* Card hover effects */
.card-hover {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(13, 148, 136, 0.2);
}

/* Image placeholder with shimmer effect */
.image-placeholder {
    background: linear-gradient(90deg, #e0f2fe 0%, #bae6fd 50%, #e0f2fe 100%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    position: relative;
    overflow: hidden;
}

.image-placeholder::after {
    content: '📷';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    opacity: 0.3;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #0d9488, #14b8a6);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #14b8a6, #2dd4bf);
}

/* Text animations */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(135deg, #0d9488, #14b8a6, #2dd4bf);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Animated underline */
.animated-underline {
    position: relative;
    display: inline-block;
}

.animated-underline::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #0d9488, #14b8a6);
    transition: width 0.3s ease;
}

.animated-underline:hover::after {
    width: 100%;
}

/* Particle effect background */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    top: 0;
    left: 0;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s infinite;
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Glass morphism effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Timeline dot animation */
.timeline-dot {
    animation: pulse 2s infinite;
}

/* Print styles */
@media print {
    nav,
    footer {
        display: none;
    }
    
    .animated-bg::before,
    .decorative-shape {
        display: none;
    }
}

/* Additional responsive adjustments */
@media (max-width: 768px) {
    .prose {
        font-size: 1rem;
    }
    
    .decorative-shape {
        display: none;
    }
}

/* Parallax effect */
.parallax {
    transform: translateZ(0);
    will-change: transform;
}

/* Image gallery hover effect */
.image-gallery img {
    transition: all 0.3s ease;
}

.image-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(13, 148, 136, 0.3);
}

/* Loading animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading {
    animation: spin 1s linear infinite;
}