/* Layout Structure */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--bg-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    margin-right: 3rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-color);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px;
    background-color: var(--text-color);
    transition: 0.3s;
}

/* Sections Structure */
main {
    margin-top: var(--nav-height);
}

section {
    padding: 80px 0;
    border-bottom: 1px solid var(--bg-secondary);
}

section:last-child {
    border-bottom: none;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    color: #9ca3af;
    /* Light gray */
    font-size: 0.9rem;
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        top: var(--nav-height);
        background-color: var(--bg-color);
        height: calc(100vh - var(--nav-height));
        flex-direction: column;
        align-items: center;
        width: 100%;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        padding-top: 2rem;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .hamburger {
        display: block;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
}