/**
 * Ön yüz üst menü — slate / cam efekti
 * common_header.php içindeki yeşil tema yerine geçer (head sonunda yüklendiği için öncelikli).
 */
:root {
    --primary-color: #0f172a;
    --secondary-color: #0369a1;
    --accent-color: #38bdf8;
    --navbar-border: rgba(255, 255, 255, 0.08);
    --navbar-hover: rgba(255, 255, 255, 0.12);
    --shadow: 0 10px 40px rgba(15, 23, 42, 0.25);
    --gradient-primary: linear-gradient(135deg, #0f172a 0%, #1e3a5f 45%, #0c4a6e 100%);
}

.navbar.navbar-expand-lg.navbar-dark {
    background: linear-gradient(90deg, #0f172a 0%, #1e293b 48%, #0f172a 100%) !important;
    border-bottom: 1px solid var(--navbar-border);
    box-shadow: var(--shadow);
    padding: 0.65rem 0;
    backdrop-filter: saturate(140%) blur(12px);
}

.navbar .navbar-brand {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: #f8fafc !important;
}

.navbar .navbar-logo {
    height: 32px;
    border-radius: 0;
    box-shadow: none;
    filter: none;
}

.navbar-nav .nav-link {
    color: rgba(248, 250, 252, 0.88) !important;
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: none;
    letter-spacing: 0.02em;
    padding: 0.45rem 0.95rem !important;
    border-radius: 999px;
    transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: #fff !important;
    background: var(--navbar-hover);
}

.navbar-nav .nav-link::after {
    display: none;
}

.navbar .dropdown-menu {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.navbar .dropdown-item {
    border-radius: 8px;
    padding: 0.45rem 0.85rem;
    font-size: 0.9rem;
    transition: background 0.2s ease, color 0.2s ease;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item.active {
    background: rgba(56, 189, 248, 0.12);
    color: #0c4a6e;
}

.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%) !important;
    border: none !important;
    border-radius: 10px;
    text-transform: none;
    letter-spacing: 0.02em;
    font-weight: 600;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%) !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(3, 105, 161, 0.35);
}

.footer {
    background: linear-gradient(180deg, #0f172a 0%, #020617 100%) !important;
}