/* --- Navbar & Header --- */
.navbar {
    background: white !important;
    border-bottom: 1px solid #eee;
    padding: 0.8rem 0;
    z-index: 1050;
}

.navbar-brand {
    font-weight: 800;
    color: var(--primary-blue) !important;
}

/* Hamburger Button */
.navbar-toggler {
    border: none;
    padding: 0;
    width: 40px;
    height: 40px;
    z-index: 1200;
    position: relative;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.hamburger-icon {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    position: relative;
    margin: 0 auto;
    transition: all 0.3s;
}

.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    transition: all 0.3s;
}

.hamburger-icon::before {
    transform: translateY(-8px);
}

.hamburger-icon::after {
    transform: translateY(8px);
}

.navbar-toggler[aria-expanded="true"] .hamburger-icon {
    background-color: transparent;
}

.navbar-toggler[aria-expanded="true"] .hamburger-icon::before {
    transform: rotate(45deg) translateY(0);
}

.navbar-toggler[aria-expanded="true"] .hamburger-icon::after {
    transform: rotate(-45deg) translateY(0);
}

/* --- Full Screen Mobile Menu --- */
@media (max-width: 991.98px) {
    .navbar-collapse {
        position: fixed !important;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: #f4f6f8 !important;
        z-index: 1150 !important;
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 20px !important;
        transition: transform 0.4s cubic-bezier(0.7, 0, 0.3, 1) !important;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
    }

    .navbar-collapse.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        justify-content: center!important;
    }

    .mobile-menu-header {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        padding: 15px 25px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    /* Căn chỉnh đồng nhất độ rộng cho các khối menu */
    .navbar-nav,
    .mobile-auth-btns {
        width: 90%;
        max-width: 380px;
        /* Cố định độ rộng tối đa */
        margin-left: auto;
        margin-right: auto;
    }

    .navbar-nav {
        background: white;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        margin-bottom: 15px;
        /* Khoảng cách giữa 2 khối */
        padding: 0;
    }

    .nav-item {
        text-align: center;
        border-bottom: 1px solid #f1f3f5;
    }

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

    .nav-link {
        padding: 18px !important;
        font-size: 1.05rem;
        font-weight: 500;
        color: #2d3436 !important;
    }
    .nav-link.active {
        color: var(--primary-blue) !important;
    }

    .mobile-auth-btns {
        margin-top: 0;
    }

    .btn-login-mobile {
        width: 100%;
        background: white;
        border: none;
        padding: 18px;
        border-radius: 20px;
        font-size: 1.05rem;
        font-weight: 500;
        color: #2d3436;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        text-align: center;
    }

    .btn-login-mobile.active {
        color: var(--primary-blue) !important;
        background: #ffffff;
    }

    .desktop-btns {
        display: none;
    }
}

/* Desktop Nav Styles */
@media (min-width: 992px) {

    .mobile-menu-header,
    .btn-login-mobile {
        display: none;
    }

    .nav-link {
        font-weight: 600;
        color: #444 !important;
        padding: 8px 16px !important;
        border-radius: 10px;
        transition: 0.3s;
        margin: 0 5px;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--primary-blue) !important;
        background: #f0f7ff;
    }
}

.collapse.navbar-collapse {
    justify-content: end;
}
.collapse.navbar-collapse.show {
    justify-content: center!important;
}