:root{--primary-color:#42b883;--secondary-color:#35495e;--bg-color:#fff;--text-color:#2c3e50;--border-color:#e0e0e0;--error-color:#e74c3c;--success-color:#27ae60;--surface-color:#fff;--surface-alt-color:#f8f9fa;--muted-color:#666;--placeholder-color:#999;--stat-bg-color:#f0f0f0;--clear-btn-color:#95a5a6;--banner-warning-bg:#fff3cd;--banner-warning-border:#ffc107;--banner-warning-text:#856404;--banner-error-bg:#f8d7da;--banner-error-border:#f5c6cb;--banner-error-text:#721c24;--overlay-color:#00000080;--modal-bg:#fff}[data-theme=dark]{--primary-color:#42d392;--secondary-color:#1a2332;--bg-color:#0f1923;--text-color:#e0e6ed;--border-color:#2a3a4a;--error-color:#ff6b6b;--success-color:#51cf88;--surface-color:#1a2836;--surface-alt-color:#1e2f3d;--muted-color:#89a;--placeholder-color:#5a6a7a;--stat-bg-color:#1e2f3d;--clear-btn-color:#5a6a7a;--banner-warning-bg:#332b00;--banner-warning-border:#650;--banner-warning-text:#ffd54f;--banner-error-bg:#3b1a1a;--banner-error-border:#5a2a2a;--banner-error-text:#ff8a8a;--overlay-color:#000000b3;--modal-bg:#1a2836}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;transition:background-color .3s,color .3s}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.btn{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:.5rem 1rem;font-size:1rem;transition:opacity .2s,background-color .3s;display:inline-block}.btn:hover{opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.input,.select,.textarea{border:1px solid var(--border-color);background-color:var(--surface-color);width:100%;color:var(--text-color);border-radius:4px;padding:.5rem;font-family:inherit;font-size:1rem;transition:border-color .3s,background-color .3s,color .3s}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary-color);outline:none}.card{background:var(--surface-color);border:1px solid var(--border-color);border-radius:8px;margin:1rem 0;padding:1rem;transition:background-color .3s,border-color .3s}