.nav-fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to right, rgba(0, 51, 102, 0.98), rgba(0, 76, 153, 0.98));
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 85px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo a {
    color: white;
    font-family: var(--title-font);
    font-size: 1.8em;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: all 0.3s ease;
}

.nav-logo a:hover {
    color: var(--secondary-color);
    transform: scale(1.02);
}

.nav-menu {
    display: flex;
    gap: 10px;
    align-items: center;
}

.nav-menu-group {
    display: flex;
    gap: 8px;
    padding: 0 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-menu-group:last-child {
    border-right: none;
    padding-right: 0;
}

.nav-menu-group:first-child {
    padding-left: 0;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.95);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 1.05em;
    font-weight: 500;
    letter-spacing: 0.3px;
    position: relative;
    white-space: nowrap;
}

.nav-menu a:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    transform: translateY(-2px);
}

.nav-menu a.active {
    background: var(--secondary-color);
    color: white;
    font-weight: 600;
}

.nav-menu a.highlight {
    background: var(--secondary-color);
    color: white;
    font-weight: 600;
    padding: 12px 24px;
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.2);
}

.nav-menu a.highlight:hover {
    background: #ff7518;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 102, 0, 0.3);
}

@media (max-width: 1024px) {
    .nav-container {
        height: 75px;
    }

    .nav-menu a {
        font-size: 1em;
        padding: 8px 16px;
    }

    .nav-menu-group {
        padding: 0 15px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 15px;
    }

    .nav-logo a {
        font-size: 1.6em;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 12px;
        padding: 15px 0;
    }

    .nav-menu-group {
        flex-direction: column;
        width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        padding: 12px 0;
        gap: 12px;
    }

    .nav-menu-group:last-child {
        border-bottom: none;
    }

    .nav-menu-group:first-child {
        padding-left: 0;
    }

    .nav-menu a {
        width: 100%;
        text-align: center;
        font-size: 1.1em;
    }

    .nav-menu a.highlight {
        margin-top: 10px;
    }
}