:root{--font-main: "Inter", system-ui, -apple-system, sans-serif}:root,body.theme-light{--bg-color: #f5f5f7;--text-color: #1d1d1f;--accent-color: #0071e3;--secondary-text: #86868b;--input-bg: #ffffff;--input-border: #d2d2d7;--card-bg: rgba(255, 255, 255, .8);--card-border: rgba(0, 0, 0, .1);--title-gradient-start: #1d1d1f;--title-gradient-end: #86868b;--button-bg: #1d1d1f;--button-text: #ffffff}body.theme-dark{--bg-color: #121212;--text-color: #ffffff;--accent-color: #bb86fc;--secondary-text: #a0a0a0;--input-bg: #1e1e1e;--input-border: #333;--card-bg: rgba(30, 30, 30, .5);--card-border: rgba(255, 255, 255, .1);--title-gradient-start: #ffffff;--title-gradient-end: #a0a0a0;--button-bg: #ffffff;--button-text: #121212}body.theme-party{--bg-color: #fff0f5;--text-color: #2c3e50;--accent-color: #ff69b4;--secondary-text: #7f8c8d;--input-bg: #ffffff;--input-border: #ffb6c1;--card-bg: rgba(255, 255, 255, .9);--card-border: rgba(255, 105, 180, .3);--title-gradient-start: #ff69b4;--title-gradient-end: #9b59b6;--button-bg: #ff69b4;--button-text: #ffffff}body.theme-wedding{--bg-color: #fdfbf7;--text-color: #4a4a4a;--accent-color: #d4af37;--secondary-text: #8c8c8c;--input-bg: #ffffff;--input-border: #e6e6e6;--card-bg: rgba(255, 255, 255, .95);--card-border: rgba(212, 175, 55, .3);--title-gradient-start: #d4af37;--title-gradient-end: #c5a028;--button-bg: #d4af37;--button-text: #ffffff}body{margin:0;font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-color);display:flex;justify-content:center;align-items:center;min-height:100vh;overflow:hidden}#root{width:100%;max-width:1200px;text-align:center;padding:2rem}h1,h2,h3{font-weight:300;letter-spacing:-.02em}input,button{font-family:inherit;font-size:1rem;outline:none}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .8s ease-out forwards}