.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    z-index: 2000;
    transition: background-color 0.3s;
}

.header-left {
    flex: 1;
    display: flex;
    justify-content: flex-start;
}

.header-center {
    flex: 2;
    display: flex;
    justify-content: center;
}

.header-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 15px;
}

.logo {
    text-decoration: none;
    color: var(--text-color);
}

.logo h2 {
    font-size: 1.5rem;
    margin: 0;
}

.logo h2 span {
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--nav-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 0;
    min-width: 260px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    list-style: none;
    margin-top: 15px;
    z-index: 2010;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 8px 20px;
    font-weight: 500;
}

.dropdown-menu a:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

.theme-toggle-btn {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 5px;
    color: var(--text-color);
    transition: transform 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

html[data-theme="dark"] .theme-toggle-btn {
    transform: rotate(180deg);
}

.mobile-only,
.mobile-menu-overlay,
.mobile-actions {
    display: none !important;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-only,
    .mobile-actions {
        display: flex !important;
        align-items: center;
        gap: 15px;
    }

    .menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        z-index: 2100;
        padding: 5px;
    }

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background-color: var(--text-color);
        transition: 0.3s;
        border-radius: 2px;
    }

    .menu-toggle.open span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.open span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .mobile-menu-overlay {
        display: flex !important;
        position: fixed;
        top: 75px;
        right: 20px;
        background: var(--nav-bg);
        border: 1px solid var(--primary-color);
        border-radius: 12px;
        padding: 20px;
        width: 280px;
        box-shadow: 0 10px 25px rgba(13, 110, 253, 0.25);
        flex-direction: column;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 2050;
    }

    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .mobile-nav {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .mobile-nav a {
        text-decoration: none;
        color: var(--text-color);
        font-size: 1.1rem;
        font-weight: 600;
    }

    .mobile-nav hr {
        border: none;
        border-bottom: 1px solid var(--border-color);
        margin: 5px 0;
    }
}