:root{--primary: #2563eb;--primary-hover: #1d4ed8;--bg: #ffffff;--bg-subtle: #f8fafc;--text: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--radius: 8px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color:var(--text);background-color:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column}#root{display:flex;flex-direction:column;flex:1}h1,h2,h3,h4{font-weight:700;line-height:1.2;margin:0}p{margin:0}button{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-size:.875rem;font-weight:600;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:all .2s;gap:.5rem}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-outline{background-color:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background-color:var(--bg-subtle)}input{padding:.5rem .75rem;border-radius:var(--radius);border:1px solid var(--border);font-size:.875rem;width:100%}input:focus{outline:2px solid var(--primary);border-color:transparent}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}.loading-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;width:100%;background:var(--bg-subtle);gap:1.5rem}.loader{width:48px;height:48px;border:5px solid var(--primary);border-bottom-color:transparent;border-radius:50%;display:inline-block;box-sizing:border-box;animation:rotation 1s linear infinite}@keyframes rotation{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-overlay p{color:var(--text-muted);font-weight:500;font-family:Inter,sans-serif}.app-main{flex:1;display:flex;flex-direction:column}