/* Custom CSS for additional styling and animations */

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

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

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

/* Floating shapes animation */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.floating-shapes::before,
.floating-shapes::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.floating-shapes::before {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-shapes::after {
    top: 60%;
    right: 10%;
    animation-delay: 3s;
}

/* Masonry Grid Layout */
.masonry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    grid-gap: 2rem;
    grid-auto-rows: masonry;
}

@supports not (grid-auto-rows: masonry) {
    .masonry-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .project-card {
        flex: 1 1 350px;
        max-width: 400px;
    }
}

/* Skill tags */
.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(99, 102, 241, 0.2);
    color: #6366f1;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin: 0.25rem;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

/* Smooth scrolling for older browsers */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1f2937;
}

::-webkit-scrollbar-thumb {
    background: #6366f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4f46e5;
}

/* Intersection Observer animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

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

/* Form focus states */
input:focus,
textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Button hover effects */
button,
.btn {
    position: relative;
    overflow: hidden;
}

button::before,
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

button:hover::before,
.btn:hover::before {
    left: 100%;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .masonry-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-shapes::before,
    .floating-shapes::after {
        width: 100px;
        height: 100px;
    }
}

/* Loading animation for form submission */
.loading {
    position: relative;
    color: transparent;
}

.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    border-color: #ffffff transparent #ffffff transparent;
    animation: loading 1.2s linear infinite;
}

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

/* Gradient text effect */
.gradient-text {
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient 3s ease infinite;
}

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