/* ===== Header sticky / nav-link davranışları ===== */
body { font-family: 'Inter', sans-serif; }

.nav-link {
    position: relative;
    color: white;
    transition: color 0.3s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #16A34A;
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

.sticky-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}
.sticky-header .nav-link { color: #111827; }

.header-logo {
    filter: invert(1);
    transition: filter 0.3s ease;
}
.sticky-header .header-logo { filter: none; }

#menu-toggle {
    color: white;
    transition: color 0.3s ease;
}
.sticky-header #menu-toggle { color: #111827; }

/* ===== Swiper custom ===== */
.swiper-button-next,
.swiper-button-prev {
    color: white !important;
    background: rgba(0, 0, 0, 0.2);
    width: 50px !important;
    height: 50px !important;
    border-radius: 50%;
    backdrop-filter: blur(4px);
}
.swiper-button-next:after,
.swiper-button-prev:after {
    font-size: 18px !important;
    font-weight: bold;
}
.swiper-pagination-bullet-active {
    background: #16A34A !important;
    width: 24px !important;
    border-radius: 4px !important;
}

/* ===== Marquee (Bize Güvenen Firmalar) ===== */
.logo-marquee {
    overflow: hidden;
    position: relative;
    mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}
.logo-marquee-track {
    display: flex;
    gap: 4rem;
    align-items: center;
    width: max-content;
    animation: logo-scroll 30s linear infinite;
}
.logo-marquee:hover .logo-marquee-track { animation-play-state: paused; }
.logo-marquee-track img,
.logo-marquee-track .logo-text {
    height: 48px;
    display: flex;
    align-items: center;
    width: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.55;
    transition: filter .3s ease, opacity .3s ease, color .3s ease;
}
.logo-marquee-track .logo-text {
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 0.05em;
    color: #111827;
    text-transform: uppercase;
    white-space: nowrap;
}
.logo-marquee-track img:hover,
.logo-marquee-track .logo-text:hover { filter: grayscale(0%); opacity: 1; color: #16A34A; }
@keyframes logo-scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
    .logo-marquee-track { animation: none; }
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-in { animation: fade-in 1s ease-out forwards; }