/* =========================================================
   HEADER VE GENEL GEÇİŞLER (Titreme Engellendi)
   ========================================================= */

#main-header {
    border-bottom: 1px solid transparent;
    box-shadow: none;
    /* background-color geçişi kaldırıldı; sayfa değişiminde siyah/beyaz anında basılır */
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

/* Sayfa Aşağı Kaydırıldığında Gölge (Light) */
#main-header.is-scrolled {
    border-bottom-color: #f3f4f6;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

/* Nav Link Pill Butonları */
.nav-pill-link {
    padding: 6px 14px;
    border-radius: 12px;
    transition: background-color 0.15s ease, color 0.15s ease;
    transform: none !important;
}

/* Mega Menü Kartları */
.menu-card-item {
    transform: none !important;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

/* =========================================================
   DROPDOWN GÖRÜNÜRLÜK KURALLARI
   ========================================================= */

.dropdown-menu-content {
    display: none;
}

.nav-dropdown-item.active .dropdown-menu-content {
    display: block !important;
}

/* Ok İkonu Hareketi */
.icon-arrow {
    transition: transform 0.2s ease;
}

.nav-dropdown-item.active .icon-arrow {
    transform: rotate(180deg);
}

/* Tıklandığında Butonun Aktif Kalma Rengi */
.nav-dropdown-item.active .nav-pill-link {
    background-color: #f3f4f6;
    color: #111827;
}

.header-dark .nav-dropdown-item.active .nav-pill-link {
    background-color: #18181b !important;
    color: #ffffff !important;
}

.dropdown-menu-content>div {
    transform: none !important;
}

/* =========================================================
   ANTI-DDOS BUTONU (Beyaz Temada Mavi, Siyah Temada Beyaz/Gümüş)
   ========================================================= */

.anti-ddos-btn {
    position: relative;
    background: #ffffff;
    color: #111827;
    padding: 6px 16px;
    border-radius: 99px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    z-index: 1;
    white-space: nowrap;
    text-decoration: none;
    transform: none !important;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.anti-ddos-btn::before {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: 99px;
    padding: 2px;
    background: linear-gradient(to right, #2563eb, #3b82f6, #60a5fa, #2563eb);
    background-size: 200% 100%;
    background-position: 0% 0%;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    transition: background-position 0.6s ease, filter 0.2s ease;
}

.anti-ddos-btn:hover::before {
    transform: none !important;
    filter: brightness(1.2);
    background-position: 100% 0%;
}

/* =========================================================
   DARK THEME: SAF SİYAH & BEYAZ (Titremesiz)
   ========================================================= */

.header-dark {
    background-color: #000000 !important;
    border-bottom-color: transparent !important;
    box-shadow: none !important;
}

.header-dark .anti-ddos-btn,
.anti-ddos-btn.dark-btn {
    background: #000000 !important;
    color: #ffffff !important;
}

.header-dark .anti-ddos-btn::before,
.anti-ddos-btn.dark-btn::before {
    background: linear-gradient(to right, #2563eb, #3b82f6, #60a5fa, #2563eb) !important;
    background-size: 200% 100% !important;
}

/* Sayfa Aşağı Kaydırıldığında Gölge (Dark) */
.header-dark.is-scrolled {
    border-bottom-color: #18181b !important;
    box-shadow: 0 4px 25px -2px rgba(0, 0, 0, 0.7) !important;
}

.header-dark .user-icon {
    color: #e5e7eb;
}

.header-dark .user-icon:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}