.main-nav {
    background-color: var(--main-bg);
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    position: relative;
    top: 0;
    z-index: 10;
    box-shadow: 0 0.25rem 1.25rem rgba(0, 0, 0, 0.2);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: var(--container-fluid); /* BASE.CSS'DEN */
    margin: 0 auto;
    padding: 0 var(--space-lg-fluid); /* BASE.CSS'DEN */
}

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

    .nav-brand img {
        /*height: clamp(4rem, 6vw + 2rem, 12rem);*/
        margin: var(--space-sm-fluid) 0; /* BASE.CSS'DEN */
        transition: var(--transition);
    }

/* TOGGLE BUTON - Sadece 992px altında göster */
.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm-fluid); /* BASE.CSS'DEN */
    z-index: 1001;
}

    .nav-toggle span {
        width: 1.5rem;
        height: 0.125rem;
        background-color: var(--text-color);
        margin: 0.125rem 0;
        transition: var(--transition);
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(0.3125rem, 0.3125rem);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(0.3125rem, -0.3125rem);
    }

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

.nav-menu {
    display: flex;
    gap: var(--space-sm-fluid); /* BASE.CSS'DEN */
}

.nav-item {
    position: relative;
}

    .nav-item.active > .nav-link,
    .nav-item.active > .no-link {
        color: var(--accent-color);
        border-bottom: 2px solid rgba(79, 195, 247, 1);
    }

.nav-link, .no-link {
    font-weight: 500;
    padding: var(--space-md-fluid) var(--space-lg-fluid); /* BASE.CSS'DEN */
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-xs-fluid); /* BASE.CSS'DEN */
    /* BASE.CSS'DEKİ FLUID DEĞİŞKENİ */
    font-size: var(--text-xl-fluid);
    cursor: pointer;
    color: var(--text-color);
}

    .nav-link:hover, .no-link:hover {
        color: var(--accent-color);
    }

.no-link {
    cursor: default;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 0.125rem;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-icon, .dropdown-arrow {
    font-size: var(--text-lg-fluid); /* BASE.CSS'DEN */
}

.dropdown-arrow {
    transition: var(--transition);
}

/* DROPDOWN STILLERI - BASE.CSS FLUID */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--secondary-bg);
    min-width: clamp(15rem, 20vw + 5rem, 25rem);
    padding: var(--space-lg-fluid) 0; /* BASE.CSS'DEN */
    border-radius: var(--radius-lg-fluid); /* BASE.CSS'DEN */
    box-shadow: 0 0.625rem 1.875rem rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(var(--space-md-fluid)); /* BASE.CSS'DEN */
    transition: all 0.3s ease;
    z-index: 1001;
    border: 1px solid rgba(79, 195, 247, 0.1);
    display: block;
}

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

.dropdown-list {
    display: flex;
    flex-direction: column;
}

.dropdown-item {
    position: relative;
}

.dropdown-link,
.dropdown-link.no-link {
    display: flex;
    align-items: center;
    padding: var(--space-md-fluid) var(--space-xl-fluid); /* BASE.CSS'DEN */
    transition: var(--transition);
    color: var(--text-color);
    /* BASE.CSS'DEKİ FLUID DEĞİŞKENİ */
    font-size: var(--text-lg-fluid);
    background-color: transparent;
}

    .dropdown-link:hover,
    .dropdown-link.active,
    .dropdown-link.no-link:hover,
    .dropdown-link.no-link.active {
        color: var(--accent-color);
    }

.dropdown-icon {
    margin-right: var(--space-md-fluid); /* BASE.CSS'DEN */
    font-size: var(--text-lg-fluid); /* BASE.CSS'DEN */
    width: 1.25rem;
    text-align: center;
    color: inherit;
}

.submenu-arrow {
    margin-left: auto;
    font-size: var(--text-sm-fluid); /* BASE.CSS'DEN */
    transition: var(--transition);
    color: inherit;
}

/* SUBMENU STILLERI - BASE.CSS FLUID */
.submenu {
    position: absolute;
    left: 100%;
    top: 0;
    background-color: var(--secondary-bg);
    min-width: clamp(15rem, 20vw + 5rem, 25rem);
    padding: var(--space-lg-fluid) 0; /* BASE.CSS'DEN */
    border-radius: var(--radius-lg-fluid); /* BASE.CSS'DEN */
    box-shadow: 0 0.625rem 1.875rem rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateX(var(--space-md-fluid)); /* BASE.CSS'DEN */
    transition: all 0.3s ease;
    z-index: 1002;
    border: 1px solid rgba(79, 195, 247, 0.1);
}

.dropdown-item:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.submenu-list {
    display: flex;
    flex-direction: column;
}

.submenu-item {
    position: relative;
}

.submenu-link {
    display: flex;
    align-items: center;
    padding: var(--space-md-fluid) var(--space-xl-fluid); /* BASE.CSS'DEN */
    transition: var(--transition);
    color: var(--text-color);
    /* BASE.CSS'DEKİ FLUID DEĞİŞKENİ */
    font-size: var(--text-base-fluid);
    background-color: transparent;
}

    .submenu-link:hover,
    .submenu-link.active {
        background-color: rgba(79, 195, 247, 0.1);
        color: var(--accent-color);
    }

.submenu-icon {
    margin-right: var(--space-md-fluid); /* BASE.CSS'DEN */
    font-size: var(--text-lg-fluid); /* BASE.CSS'DEN */
    width: 1.25rem;
    text-align: center;
    color: inherit;
}

/* ===== TABLET & MOBİL RESPONSIVE ===== */
@media (max-width: 62rem) {
    /* Navbar container düzeni */
    .main-nav {
        height: auto;
        min-height: var(--navbar-height);
        padding: var(--space-sm-fluid) 0;
    }

    .nav-container {
        position: relative;
    }

    /* Toggle buton - tablet/mobilde göster */
    .nav-toggle {
        display: flex;
        order: 2;
    }

    /* Menü container - mobilde overlay */
    .nav-menu-container {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background: var(--main-bg);
        transition: all 0.3s ease;
        z-index: 1000;
        overflow-y: auto;
        padding-top: calc(var(--topbar-height) + var(--navbar-height));
        display: block;
    }

        .nav-menu-container.active {
            left: 0;
        }

    /* Menü listesi - mobil düzen */
    .nav-menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: var(--space-md-fluid) var(--space-lg-fluid);
    }

    .nav-item {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .nav-link, .no-link {
        padding: var(--space-lg-fluid) var(--space-md-fluid);
        font-size: var(--text-lg-fluid);
        justify-content: space-between;
        width: 100%;
    }

    /* Dropdown stilleri - mobilde accordion */
    .dropdown-menu {
        position: static;
        background: var(--secondary-bg);
        border: none;
        border-radius: 0;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        padding: 0;
        margin: 0;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-item.active .dropdown-menu {
        display: block;
        max-height: 500px;
    }

    .dropdown-list {
        padding-left: var(--space-md-fluid);
    }

    .dropdown-link, .dropdown-link.no-link {
        padding: var(--space-md-fluid) var(--space-lg-fluid);
        font-size: var(--text-base-fluid);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

        .dropdown-link:last-child, .dropdown-link.no-link:last-child {
            border-bottom: none;
        }

    /* Dropdown arrow rotation */
    .nav-item.has-dropdown.active .dropdown-arrow {
        transform: rotate(180deg);
    }
}

/* MOBİL (480px - 768px) */
@media (max-width: 48rem) {
    .nav-container {
        padding: 0 var(--space-md-fluid);
    }

    .nav-brand img {
        height: clamp(2.5rem, 6vw, 3.5rem);
    }

    .nav-link, .no-link {
        padding: var(--space-md-fluid);
        font-size: var(--text-base-fluid);
    }

    .dropdown-link, .dropdown-link.no-link {
        padding: var(--space-md-fluid) var(--space-lg-fluid);
    }

    .nav-menu {
        padding: var(--space-md-fluid);
    }
}

/* KÜÇÜK MOBİL (480px altı) */
@media (max-width: 36rem) {
    .nav-container {
        padding: 0 var(--space-sm-fluid);
    }

    .nav-brand img {
        height: clamp(2rem, 5vw, 3rem);
    }

    .nav-link, .no-link {
        padding: var(--space-sm-fluid) var(--space-md-fluid);
        font-size: var(--text-sm-fluid);
    }

    .dropdown-link, .dropdown-link.no-link {
        padding: var(--space-sm-fluid) var(--space-lg-fluid);
        font-size: var(--text-sm-fluid);
    }

    .dropdown-list {
        padding-left: var(--space-sm-fluid);
    }

    .nav-menu {
        padding: var(--space-md-fluid) var(--space-sm-fluid);
    }
}

/* ===== NAVBAR MOBİL MENÜ POSITION DÜZELTMESİ ===== */
@media (max-width: 62rem) {
    .main-nav {
        height: auto;
        min-height: var(--navbar-height);
        padding: var(--space-sm-fluid) 0;
        position: relative;
    }

    /* Menü container - navbar'ın hemen altından başlamalı */
    .nav-menu-container {
        position: absolute; /* fixed yerine absolute */
        top: 100%; /* navbar'ın hemen altından başla */
        left: 0;
        width: 100%;
        background: var(--main-bg);
        border-top: 1px solid rgba(79, 195, 247, 0.1);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 1000;
        max-height: 70vh;
        overflow-y: auto;
    }

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

    /* Header container için position relative */
    .header-container {
        position: relative;
    }
}

@media (min-width: 62.0625rem) and (max-width: 81.25rem) {
    .nav-container {
        padding: 0 var(--space-md-fluid); /* Daha küçük padding */
    }

    .nav-menu {
        gap: var(--space-xs-fluid); /* Daha küçük boşluk */
    }

    .nav-link, .no-link {
        font-size: var(--text-lg-fluid); /* text-xl yerine text-lg */
        padding: var(--space-sm-fluid) var(--space-md-fluid); /* Daha küçük padding */
        gap: var(--space-xs-fluid);
    }

    .nav-brand img {
        
        margin: var(--space-xs-fluid) 0;
    }

    /* Dropdown menüleri küçült */
    .dropdown-menu {
        min-width: clamp(12rem, 15vw + 3rem, 18rem);
        padding: var(--space-md-fluid) 0;
    }

    .dropdown-link,
    .dropdown-link.no-link {
        padding: var(--space-sm-fluid) var(--space-lg-fluid);
        font-size: var(--text-base-fluid); /* text-lg yerine text-base */
    }

    .submenu-link {
        padding: var(--space-sm-fluid) var(--space-lg-fluid);
        font-size: var(--text-sm-fluid); /* text-base yerine text-sm */
    }
}