/* Navigation Styles */
:root {
    --nav-height: 70px;
    --nav-bg: #ffffff;
    --nav-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --primary-color: #2c5282;
    --text-color: #2d3748;
}

.dark-mode {
    --nav-bg: #1a202c;
    --nav-shadow: 0 2px 10px rgba(0,0,0,0.4);
    --text-color: #e2e8f0;
}

body {
    padding-top: 100px; /* Prevent content from hiding behind fixed nav - Increased for margin */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: var(--nav-bg);
    box-shadow: var(--nav-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 1000;
    transition: background-color 0.3s ease;
}

.nav__logo {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 800;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}

.nav__menu {
    display: flex;
    gap: 2rem;
}

.nav__item {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.2s;
}

.nav__item:hover {
    color: var(--primary-color);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background-color: var(--nav-bg);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.1rem;
    width: 100%;
    text-align: center;
    padding: 10px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .nav__menu {
        display: none;
    }
    .hamburger {
        display: flex;
    }

    .nav__logo {
        font-size: 1.2rem; /* Smaller font for mobile */
    }
}

/* Hamburger Animation */
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}