:root{--primary:#3572b0;--primary-dark:#2a5a8a;--primary-light:#4a8fd4}
html{scroll-behavior:smooth}
body{font-family:'Lato',sans-serif;color:#333}
.hero{background:url('images/oneplaza-slider-1b.jpg') center/cover no-repeat;min-height:80vh}
.amenities-bg{background:url('images/oneplaza-pool2.jpg') center/cover no-repeat}
.gallery-item{overflow:hidden;cursor:pointer}
.gallery-item img{transition:transform .3s,opacity .3s}
.gallery-item:hover img{transform:scale(1.08);opacity:.85}
.tab-btn.active{border-color:var(--primary);color:var(--primary);background:#f0f7ff}
.floorplan-tab.active{background:var(--primary);color:#fff}
.nav-link{position:relative}
.nav-link::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--primary);transition:width .3s}
.nav-link:hover::after{width:100%}
#mobile-menu{transition:max-height .3s ease}