.ai-sphere{--sphere-size:256px;--c-base:#f97316;--c-glow:#fb923c;--level:0.5;--pulse-speed:2.5s;--glow-strength:0.2;--scale-amount:0.03;position:relative;width:var(--sphere-size);height:var(--sphere-size);border-radius:50%;background:radial-gradient(circle at var(--highlight-x,30%) var(--highlight-y,30%),rgba(251,146,60,.8),transparent 50%),radial-gradient(circle at 50% 50%,var(--c-glow),var(--c-base));background-size:120% 120%,100% 100%;will-change:transform,box-shadow,filter,background-position;opacity:0;transform:scale(.06) rotate(0deg)}.ai-sphere.has-entered{animation:sphere-entrance 1.2s cubic-bezier(.34,1.56,.64,1) forwards}@keyframes sphere-entrance{0%{transform:scale(.06) rotate(0deg);opacity:1}to{transform:scale(1) rotate(2turn);opacity:1}}.ai-sphere:after{content:"";position:absolute;inset:-20%;border-radius:50%;background:radial-gradient(circle,rgba(249,115,22,calc(.3 * var(--level) * var(--glow-strength))) 0,transparent 70%);filter:blur(20px);opacity:var(--level);pointer-events:none}.ai-sphere.has-entered[data-state=listening]{--pulse-speed:6s;--glow-strength:0.15;--scale-amount:0.03;animation:sphere-entrance 1.2s cubic-bezier(.34,1.56,.64,1) forwards,sphere-drift 6s ease-in-out 1.2s infinite}.ai-sphere.has-entered[data-state=thinking]{--pulse-speed:4s;--glow-strength:0.2;--scale-amount:0.02;animation:sphere-entrance 1.2s cubic-bezier(.34,1.56,.64,1) forwards,sphere-drift 4s ease-in-out 1.2s infinite,thinking-hue 8s ease-in-out 1.2s infinite}.ai-sphere.has-entered[data-state=talking]{--pulse-speed:0.3s;--glow-strength:0.8;--scale-amount:0.08;animation:sphere-entrance 1.2s cubic-bezier(.34,1.56,.64,1) forwards,sphere-pulse .3s ease-in-out 1.2s infinite}@keyframes sphere-drift{0%,to{--highlight-x:30%;--highlight-y:30%;transform:scale(1)}25%{--highlight-x:70%;--highlight-y:40%;transform:scale(calc(1 + var(--scale-amount)))}50%{--highlight-x:60%;--highlight-y:70%;transform:scale(1)}75%{--highlight-x:40%;--highlight-y:60%;transform:scale(calc(1 - var(--scale-amount) * .5))}}@keyframes thinking-hue{0%,to{filter:hue-rotate(0deg) brightness(1)}50%{filter:hue-rotate(8deg) brightness(1.05)}}@keyframes sphere-pulse{0%,to{transform:scale(calc(1 + .08 * var(--level)));box-shadow:0 0 calc(15px * var(--level)) rgba(249,115,22,.4),0 0 calc(30px * var(--level)) rgba(249,115,22,.3),0 0 calc(45px * var(--level)) rgba(249,115,22,.2)}50%{transform:scale(calc(1 + .12 * var(--level)));box-shadow:0 0 calc(25px * var(--level)) rgba(249,115,22,.6),0 0 calc(50px * var(--level)) rgba(249,115,22,.4),0 0 calc(75px * var(--level)) rgba(249,115,22,.3)}}@media (prefers-reduced-motion:reduce){.ai-sphere{animation-duration:4s!important}}