:root{--color-brand-bg: #f7f9f6;--color-brand-surface: #ffffff;--color-brand-dark: #2E2E2E;--color-brand-light: #7f8c8d;--color-brand-primary: #5E7B4C;--color-brand-secondary: #4A3325;--color-brand-accent: #D9C9A2;--color-brand-text-on-primary: #ffffff}body.theme-christmas{--color-brand-bg: #c0392b;--color-brand-surface: #ffffff;--color-brand-dark: #2c3e50;--color-brand-light: #ecf0f1;--color-brand-primary: #ffffff;--color-brand-secondary: #27ae60;--color-brand-accent: #c0392b;--color-brand-text-on-primary: #c0392b}body.theme-halloween{--color-brand-bg: #1a1a1a;--color-brand-surface: #2d2d2d;--color-brand-dark: #ffffff;--color-brand-light: #bdc3c7;--color-brand-primary: #e67e22;--color-brand-secondary: #8e44ad;--color-brand-accent: #c0392b;--color-brand-text-on-primary: #ffffff}body.theme-spring{--color-brand-bg: #fef9f3;--color-brand-surface: #ffffff;--color-brand-dark: #4a5568;--color-brand-light: #cbd5e0;--color-brand-primary: #ff69b4;--color-brand-secondary: #98d8c8;--color-brand-accent: #ffd700;--color-brand-text-on-primary: #ffffff}body.theme-summer{--color-brand-bg: #fff8dc;--color-brand-surface: #fffacd;--color-brand-dark: #2d3748;--color-brand-light: #a0aec0;--color-brand-primary: #ffa500;--color-brand-secondary: #00ced1;--color-brand-accent: #ff6347;--color-brand-text-on-primary: #ffffff}body.theme-autumn{--color-brand-bg: #faf0e6;--color-brand-surface: #fff5ee;--color-brand-dark: #3e2723;--color-brand-light: #8d6e63;--color-brand-primary: #d2691e;--color-brand-secondary: #cd853f;--color-brand-accent: #dc143c;--color-brand-text-on-primary: #ffffff}body.theme-winter{--color-brand-bg: #f0f8ff;--color-brand-surface: #ffffff;--color-brand-dark: #1e3a5f;--color-brand-light: #90caf9;--color-brand-primary: #4682b4;--color-brand-secondary: #87ceeb;--color-brand-accent: #b0c4de;--color-brand-text-on-primary: #ffffff}body,div,button,span,p,h1,h2,h3,input{transition:background-color .5s ease,color .5s ease,border-color .5s ease}@keyframes snowfall{0%{transform:translateY(-10px) translate(0);opacity:0}10%{opacity:1}90%{opacity:1}to{transform:translateY(100vh) translate(50px);opacity:0}}@keyframes sparkle{0%,to{opacity:.3;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}@keyframes jingle{0%,to{transform:rotate(0)}25%{transform:rotate(-2deg)}75%{transform:rotate(2deg)}}body.theme-christmas button{animation:jingle 4s ease-in-out infinite}body.theme-christmas button:hover{animation:sparkle 2s ease-in-out infinite;box-shadow:0 0 20px #c0392b99}@keyframes ghostFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spookyPulse{0%,to{box-shadow:0 0 5px #e67e224d}50%{box-shadow:0 0 20px #e67e22cc,0 0 30px #8e44ad80}}@keyframes flicker{0%,to{opacity:1}50%{opacity:.8}75%{opacity:.9}}body.theme-halloween button{animation:ghostFloat 3s ease-in-out infinite}body.theme-halloween button:hover{animation:spookyPulse 1.5s ease-in-out infinite}@keyframes bloom{0%,to{transform:scale(1);opacity:.8}50%{transform:scale(1.05);opacity:1}}@keyframes petalFloat{0%{transform:translateY(0) rotate(0)}to{transform:translateY(10px) rotate(5deg)}}body.theme-spring button{animation:bloom 3s ease-in-out infinite}body.theme-spring button:hover{box-shadow:0 0 15px #ff69b480;animation:bloom 1.5s ease-in-out infinite}@keyframes sunPulse{0%,to{box-shadow:0 0 10px #ffa50066}50%{box-shadow:0 0 25px #ffa500cc,0 0 35px #ff634780}}@keyframes heatWave{0%,to{transform:translateY(0)}25%{transform:translateY(-2px)}75%{transform:translateY(2px)}}body.theme-summer button{animation:heatWave 2s ease-in-out infinite}body.theme-summer button:hover{animation:sunPulse 1.5s ease-in-out infinite}@keyframes leafFall{0%{transform:translateY(0) rotate(0)}to{transform:translateY(5px) rotate(3deg)}}@keyframes autumnGlow{0%,to{box-shadow:0 0 8px #d2691e4d}50%{box-shadow:0 0 18px #d2691e99,0 0 25px #cd853f66}}body.theme-autumn button{animation:leafFall 3s ease-in-out infinite alternate}body.theme-autumn button:hover{animation:autumnGlow 2s ease-in-out infinite}@keyframes frostShimmer{0%,to{box-shadow:0 0 10px #4682b44d}50%{box-shadow:0 0 20px #4682b499,0 0 30px #87ceeb66}}@keyframes iceFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}body.theme-winter button{animation:iceFloat 4s ease-in-out infinite}body.theme-winter button:hover{animation:frostShimmer 2s ease-in-out infinite}@keyframes gentleFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}body:not(.theme-christmas):not(.theme-halloween):not(.theme-spring):not(.theme-summer):not(.theme-autumn):not(.theme-winter) button:hover{animation:gentleFloat 2s ease-in-out infinite;box-shadow:0 4px 12px #5e7b4c33}