:root {
    --font-inter: 'Inter', sans-serif;
    --font-roboto-slab: 'Roboto Slab', serif;
}

/* Font Families */
.font-sans { font-family: var(--font-inter); }
.font-serif { font-family: var(--font-roboto-slab); }

/* Hero Gradient Animasyonu */
.hero-gradient {
    background: linear-gradient(135deg, #1e40af 0%, #dc2626 50%, #f59e0b 100%);
    background-size: 200% 200%;
    animation: gradientShift 8s ease-in-out infinite;
}

/* Hero Gradient Keyframes */
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Text Shadow */
.text-shadow { text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }

/* Line Clamp */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Hidden & Block */
.hidden { display: none; }
.block { display: block; }

/* Mobile Menu */
@media (max-width: 768px) {
    .mobile-menu { display: none; }
    .mobile-menu.active { display: block; }
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0,0,0,0.9);
}
.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}
.lightbox-close {
    position: absolute;
    top: 20px; right: 30px;
    color: white;
    font-size: 40px;
    cursor: pointer;
}
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 30px;
    cursor: pointer;
    padding: 10px;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
}
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

/* Video Modal */
#video-modal {
    display: none;
    position: fixed;
    z-index: 1050;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.85);
    align-items: center;
    justify-content: center;
}
#video-modal.active { display: flex; }
#video-modal-content { max-width: 90vw; max-height: 80vh; }
#video-modal-close {
    position: absolute;
    top: 30px; right: 50px;
    color: white;
    font-size: 40px;
    cursor: pointer;
}
@media (max-width: 600px) {
    #video-modal-content iframe,
    #video-modal-content video {
        width: 100vw !important;
        height: 40vw !important;
    }
}