:root{--motion-duration-fast:0.16s;--motion-duration-base:0.28s;--motion-duration-slow:0.55s;--motion-ease:cubic-bezier(0.22, 1, 0.36, 1);--motion-ease-emphasized:cubic-bezier(0.34, 1.56, 0.64, 1)}body,html{overflow-x:hidden}.toggle-theme-btn{position:fixed;bottom:calc(16px + env(safe-area-inset-bottom,0px));right:max(16px,env(safe-area-inset-right,0px));width:56px;height:56px;font-size:1.5rem;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:2px solid rgba(255,255,255,.3);cursor:pointer;border-radius:50%;display:flex;justify-content:center;align-items:center;transition:transform var(--motion-duration-base) var(--motion-ease),box-shadow var(--motion-duration-base) var(--motion-ease),background var(--motion-duration-fast) var(--motion-ease),border-color var(--motion-duration-fast) var(--motion-ease);will-change:transform,box-shadow;box-shadow:0 10px 25px rgba(99,102,241,.4),0 4px 10px rgba(0,0,0,.2);z-index:9999}.toggle-theme-btn:focus-visible{outline:3px solid rgba(255,255,255,.9);outline-offset:2px}.toggle-theme-btn:hover{background:linear-gradient(135deg,#8b5cf6,#a78bfa);transform:translate3d(0,-2px,0) scale(1.1) rotate(12deg);box-shadow:0 15px 35px rgba(139,92,246,.5),0 6px 15px rgba(0,0,0,.3);border-color:rgba(255,255,255,.5)}.toggle-theme-btn:active{transform:translate3d(0,0,0) scale(1.02) rotate(10deg)}[data-theme=dark] .toggle-theme-btn{background:linear-gradient(135deg,#fbbf24,#f59e0b);box-shadow:0 10px 25px rgba(251,191,36,.4),0 4px 10px rgba(0,0,0,.3);border-color:rgba(255,255,255,.2)}[data-theme=dark] .toggle-theme-btn:hover{background:linear-gradient(135deg,#fcd34d,#fbbf24);box-shadow:0 15px 35px rgba(252,211,77,.5),0 6px 15px rgba(0,0,0,.4);border-color:rgba(255,255,255,.4)}@media (prefers-reduced-motion:reduce){:root{--motion-duration-fast:0s;--motion-duration-base:0s;--motion-duration-slow:0s}*,::after,::before{animation-duration:0s!important;animation-iteration-count:1!important;transition-duration:0s!important}html{scroll-behavior:auto}.toggle-theme-btn,.toggle-theme-btn:active,.toggle-theme-btn:hover{transform:none!important;box-shadow:0 8px 20px rgba(0,0,0,.15),0 2px 6px rgba(0,0,0,.12)}}