.sakura-layer{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:999;opacity:0;transition:opacity .5s}.sakura-layer.active{opacity:1}.petal{position:absolute;top:-40px;width:12px;height:12px;background:radial-gradient(ellipse at 40% 35%,#FFD4DD 0%,#F9A8B8 60%,#E8809A 100%);border-radius:50% 0 50% 0;opacity:.85;animation:petalFall linear infinite}.petal:nth-child(2n){width:9px;height:9px;background:radial-gradient(ellipse at 40% 35%,#FFF0F3 0%,#FFCCD8 60%,#F4A0B5 100%)}.petal:nth-child(3n){border-radius:0 50% 0 50%}@keyframes petalFall{0%{transform:translateY(0)rotate(0)scale(1);opacity:.9}80%{opacity:.6}100%{transform:translateY(110vh)rotate(360deg)scale(.7);opacity:0}}.theme-toggle{display:flex;background:rgba(255,255,255,.15);border-radius:20px;padding:3px;gap:2px}.theme-btn{border:none;background:0 0;color:rgba(255,255,255,.7);padding:4px 10px;border-radius:16px;font-size:.78rem;cursor:pointer;transition:all .25s;white-space:nowrap}.theme-btn.active{background:rgba(255,255,255,.25);color:#fff;font-weight:600}.theme-btn:hover:not(.active){color:#fff}.sakura-btn{border:none;background:rgba(255,255,255,.15);color:rgba(255,255,255,.8);border-radius:20px;padding:5px 10px;font-size:.85rem;cursor:pointer;transition:all .25s}.sakura-btn.active{background:rgba(255,200,210,.35);color:#fff}.sakura-btn:hover{color:#fff}.header-controls{display:flex;align-items:center;gap:.75rem}