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

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-in {
    animation: slideIn 0.6s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.transition-all {
    transition: all 0.3s ease;
}

.transition-transform {
    transition: transform 0.3s ease;
}

.transition-opacity {
    transition: opacity 0.3s ease;
}

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--card-bg);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.page-transition {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-transition.active {
    opacity: 1;
    transform: translateY(0);
}

.click-ripple {
    position: relative;
    overflow: hidden;
}

.click-ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, #fff 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
}

.click-ripple:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}

.section-title {
    animation: slideUp 0.8s ease forwards;
    opacity: 0;
}

.skill-card {
    animation: fadeIn 0.5s ease forwards;
    animation-delay: calc(var(--index, 0) * 0.1s);
    opacity: 0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.project-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s ease;
}

.project-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

html {
    scroll-behavior: smooth;
}

.loader {
    animation: fadeOut 0.5s ease forwards;
    animation-delay: 3s;
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        visibility: hidden;
    }
}

.progress {
    animation: progress 2.5s ease forwards;
}

@keyframes progress {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

.skill-fill {
    width: 0;
    transition: width 1.5s ease;
}

.skill-card.animate .skill-fill {
    width: var(--skill-percentage);
}

.cursor {
    transition: transform 0.1s ease-out, width 0.2s ease, height 0.2s ease, background-color 0.2s ease;
}

.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover:after {
    width: 300%;
    height: 300%;
}