:root {
    --primary-color: #1a73e8;
    --text-color: #0E1B2C; /* Ana metin rengini daha koyu yapalım */
    --bg-color: #ffffff;
    --transition: all 0.3s ease;
    --nav-height: 80px;
    --mist: #F5F7FB;
    --dark-text: #000000;
}

.modern-nav {
    background-color: var(--bg-color);
    height: var(--nav-height);
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;    
    transition: background-color 0.4s ease, box-shadow 0.4s ease, transform 0.3s ease !important;
}

/* Sayfa en üstteyken uygulanacak stiller */
.modern-nav:not(.nav-scrolled) {
    background-color: transparent;
    box-shadow: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.modern-nav.nav-hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: 1200px;
    width: 90%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo .logo {
    --nav-logo-height: 36px;
    height: 36px;
    width: auto;
    max-width: 200px;
    display: block;
    transition: opacity 0.3s ease;
}

/* Ürün logolarındaki açık renkli detayları hero zemininden ayırır. */
.nav-logo.is-product-logo .logo {
    box-sizing: content-box;
    padding: calc(var(--nav-logo-height) * 0.16) calc(var(--nav-logo-height) * 0.25);
    border-radius: calc(var(--nav-logo-height) * 0.28);
    background: #ffffff;
    transform: scale(1.1);
    transform-origin: left center;
}

/* Logo Değişimi */
.logo-dark { opacity: 1; }
.logo-white { opacity: 0; position: absolute; }

.modern-nav:not(.nav-scrolled) .logo-dark {
    opacity: 0;
}
.modern-nav:not(.nav-scrolled) .logo-white {
    opacity: 1;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-menu li {
    position: relative;
    margin-left: 30px;
    /* margin-left: 30px; Bu kuralı kaldırıyoruz */
}

.nav-menu li a,
.nav-menu li .dropdown-trigger {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
    position: relative;
}

.nav-menu li a:hover,
.nav-menu li .dropdown-trigger:hover {
    color: var(--primary-color);
}

.nav-menu li a.active {
    color: var(--primary-color);
}

/* Saydam menüdeki link renkleri */
.modern-nav:not(.nav-scrolled) .nav-menu li a,
.modern-nav:not(.nav-scrolled) .nav-menu li .dropdown-trigger {
    color: #ffffff;
}

.modern-nav:not(.nav-scrolled) .nav-toggle span {
    background: #ffffff;
}

.modern-nav.nav-scrolled .nav-toggle span {
    background: var(--text-color);
}

/* ===== Header Butonları ===== */
.nav-btn {
    padding: 0.6rem 1.5rem !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
    transition: all 0.3s ease !important;
    border: 2px solid transparent;

    /* margin-left: 0.5rem; Bu kuralı kaldırıyoruz */
}

.nav-btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.2);
}

.nav-btn-primary {
    background-color: #fff;
    color: var(--primary-color) !important;
}

.nav-btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: #fff !important;
}

.nav-btn-primary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

/* Kaydırılmış menüdeki buton stilleri */
.modern-nav.nav-scrolled .nav-btn-secondary {
    background-color: var(--mist);
    color: #000000 !important;
    border-color: #e5e7eb;
}
.modern-nav.nav-scrolled .nav-btn-primary {
    background-color: var(--primary-color);
    color: #fff !important;
}

/* Dropdown Styles */
.has-dropdown .nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 280px;
    max-width: calc(100vw - 32px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-radius: 12px;
    padding: 15px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 100;
    display: grid;
    gap: 10px;
    list-style: none;
    margin: 0;
}

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

.nav-dropdown li {
    margin: 0 !important;
}

.nav-dropdown li a {
    padding: 10px !important;
    display: flex !important;
    align-items: center;
    gap: 15px;
    border-radius: 8px;
    transition: background 0.2s ease;
}

.nav-dropdown li a:hover {
    background-color: #f0f7ff;
}

.dropdown-icon-box {
    width: 45px;
    height: 45px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.dropdown-icon-box i {
    font-size: 20px;
}

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

.dropdown-title {
    font-weight: 600;
    color: #1f2937;
    font-size: 15px;
    display: block;
}

.dropdown-desc {
    font-size: 12px;
    color: #6b7280;
    font-weight: 400;
    display: block;
}

/* Mobile Toggle */
.nav-toggle {
	border: 0;
	background: transparent;
    display: none;
    cursor: pointer;
}

.dropdown-trigger {
	display: flex;
	align-items: center;
	gap: 0.4rem;
	border: 0;
	background: transparent;
	color: inherit;
	font: inherit;
	padding: 0;
	cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}

.nav-close-li {
    display: none;
}

.nav-menu-brand,
.nav-backdrop {
    display: none;
}

/* ===== Tüm Sayfalar İçin Ortak Header Yerleşimi ===== */
@media screen and (min-width: 993px) {
    .modern-nav {
        height: 80px !important;
    }

    .modern-nav .nav-container {
        width: calc(100% - 40px) !important;
        max-width: 1200px !important;
        height: 100%;
        margin-right: auto !important;
        margin-left: auto !important;
        padding: 0 !important;
    }

    .modern-nav .nav-logo {
        display: flex;
        flex: 0 0 200px;
        align-items: center;
        position: relative;
    }

    .modern-nav .nav-logo .logo {
        --nav-logo-height: 36px;
        height: 36px !important;
        max-width: 200px !important;
    }

    .modern-nav .nav-menu {
        display: flex;
        flex: 0 0 auto;
        align-items: center;
        gap: 30px;
        margin: 0 !important;
        padding: 0 !important;
    }

    .modern-nav .nav-menu > li {
        flex: 0 0 auto;
        margin: 0 !important;
    }

    .modern-nav .nav-menu > li > a,
    .modern-nav .nav-menu > li > .dropdown-trigger {
        min-height: 44px;
    }

    .modern-nav .nav-menu > li > .nav-btn {
        min-width: 118px;
        min-height: 44px;
        padding: 0.6rem 1.25rem !important;
        justify-content: center;
        text-align: center;
    }
}

/* Responsive Styles */
@media screen and (max-width: 992px) {
    .nav-toggle {
        display: block;
    }

    body.nav-open {
        overflow: hidden;
        touch-action: none;
    }

    .nav-menu {
        position: fixed;
        top: 12px;
        right: -110%;
        width: min(90vw, 380px);
        height: calc(100dvh - 24px);
        background: linear-gradient(160deg, rgba(14, 27, 44, 0.98) 0%, rgba(20, 45, 78, 0.98) 100%);
        flex-direction: column;
        padding: 18px 18px 20px;
        transition: right 0.38s cubic-bezier(0.22, 1, 0.36, 1);
        box-shadow: -22px 0 70px rgba(4, 13, 27, 0.3);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 26px;
        align-items: flex-start;
        overflow-y: auto;
        overscroll-behavior: contain;
        z-index: 1002;
    }

    .nav-menu .has-dropdown .nav-dropdown {
        width: 100%;
        max-width: 100%;
    }

    .nav-menu.active {
        background: linear-gradient(160deg, rgba(14, 27, 44, 0.99) 0%, rgba(20, 45, 78, 0.99) 100%);
    }

    .nav-menu.active {
        right: 12px;
    }

    .nav-menu li {
        margin: 4px 0;
        width: 100%;
    }

    .nav-close-li {
        display: flex;
        justify-content: flex-end;
        align-self: stretch;
        margin: 0 0 10px;
    }

    .nav-close-btn {
        background: rgba(255, 255, 255, 0.09);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 14px;
        font-size: 20px;
        cursor: pointer;
        color: #ffffff;
    }

    .nav-menu li a,
    .nav-menu li .dropdown-trigger {
        width: 100%;
        justify-content: flex-start;
        white-space: normal;
        padding: 12px 14px;
        border-radius: 14px;
        color: #ffffff !important;
        font-size: 15px;
        font-weight: 600;
    }

    .nav-menu.active li a,
    .nav-menu.active li .dropdown-trigger {
        color: #ffffff !important;
    }

    body.login-page .modern-nav .nav-menu.active li a,
    body.login-page .modern-nav .nav-menu.active li .dropdown-trigger {
        color: #ffffff !important;
    }

    .nav-menu > li:not(.has-dropdown):not(.nav-close-li):not(.nav-menu-brand) > a:not(.nav-btn):hover,
    .nav-menu .dropdown-trigger:hover {
        background: rgba(255, 255, 255, 0.08);
        color: #ffffff !important;
    }

    .nav-btn {
        width: 100%;
        justify-content: center;
    }

    .nav-toggle {
        min-width: 44px;
        min-height: 44px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .nav-menu.active .nav-btn-secondary {
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.18);
        margin-top: 8px;
    }

    /* Keep page-specific desktop button themes from overriding the dark mobile menu. */
    body.login-page .modern-nav .nav-menu.active .nav-btn-secondary {
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.18);
    }

    .nav-menu.active .nav-btn-primary {
        color: #ffffff !important;
        background: var(--primary-color);
        border-color: var(--primary-color);
    }

    .has-dropdown .nav-dropdown {
        position: static;
        transform: none;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        display: none;
        padding: 8px 0 2px;
        min-width: 0;
        background: transparent;
        border-radius: 0;
        gap: 7px;
    }

    .has-dropdown.active .nav-dropdown {
        display: grid;
    }

    .nav-dropdown li a {
        padding: 10px !important;
        background: rgba(255, 255, 255, 0.07);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 14px;
        gap: 11px;
    }

    .nav-dropdown li a:hover {
        background: rgba(255, 255, 255, 0.13);
    }

    .nav-dropdown .dropdown-icon-box {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.92) !important;
    }

    .nav-dropdown .dropdown-title {
        color: #ffffff;
        font-size: 14px;
    }

    .nav-dropdown .dropdown-desc {
        color: rgba(255, 255, 255, 0.62);
        font-size: 11px;
    }

    .nav-menu-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        margin-top: auto !important;
        padding: 24px 10px 4px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu-brand span {
        color: rgba(255, 255, 255, 0.5);
        font-size: 11px;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .nav-menu-brand img {
        width: 132px;
        height: auto;
        filter: brightness(0) invert(1);
        opacity: 0.92;
    }

    .nav-backdrop {
        position: fixed;
        inset: 0;
        display: block;
        border: 0;
        background: rgba(4, 12, 24, 0.58);
        backdrop-filter: blur(6px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 1001;
    }

    .nav-backdrop.active {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .modern-nav {
        height: 72px !important;
    }

    .modern-nav .nav-container {
        width: calc(100% - 32px) !important;
        max-width: none !important;
        height: 100%;
        margin-right: auto !important;
        margin-left: auto !important;
        padding: 0 !important;
    }

    .nav-logo .logo {
        --nav-logo-height: 30px;
        height: 30px;
        max-width: 160px;
    }

    .nav-close-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

@media screen and (max-width: 480px) {
    .nav-menu {
        top: 8px;
        right: -110%;
        width: calc(100vw - 16px);
        max-width: calc(100vw - 16px);
        height: calc(100dvh - 16px);
        border-radius: 22px;
    }

    .nav-menu.active {
        right: 8px;
    }

    .nav-menu li a,
    .nav-btn {
        font-size: 15px;
    }

    .has-dropdown .nav-dropdown {
        min-width: 0;
        padding: 8px 0 2px;
    }
}