body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to bottom, #f3f4f6, #e5e7eb);
}

.smooth-scroll {
    scroll-behavior: smooth;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: #1f2937;
    margin: 2px 0;
    transition: all 0.3s ease-in-out;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-menu {
    transition: all 0.3s ease-in-out;
}

.profile-img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        width: 50%;
        max-width: 300px;
        position: fixed;
        top: 64px;
        right: 0;
        height: auto;
        max-height: 50vh;
        background-color: #ffffff;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        opacity: 0;
        transform: translateY(-10px);
    }

    .nav-menu.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
    }

    .nav-menu li {
        margin: 0.5rem 0;
    }

    .profile-img {
        width: 120px;
        height: 120px;
    }
}