:root{--bg-color:#f4f6f8;--card-bg:#fff;--text-primary:#1f2937;--text-secondary:#6b7280;--accent-color:#2563eb;--border-color:#e5e7eb;--ad-bg:#e2e8f0;--footer-bg:#fff}.dark-mode{--bg-color:#0f172a;--card-bg:#1e293b;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent-color:#3b82f6;--border-color:#334155;--ad-bg:#1e293b;--footer-bg:#1e293b}*{box-sizing:border-box;margin:0;padding:0;font-family:system-ui,-apple-system,sans-serif}.app-container{background-color:var(--bg-color);min-height:100vh;color:var(--text-primary);flex-direction:column;transition:background-color .3s,color .3s;display:flex}.app-header{border-bottom:1px solid var(--border-color);background-color:var(--card-bg);justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex}.theme-toggle{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;background:0 0;border-radius:6px;padding:.5rem 1rem}.layout-body{flex:1;grid-template-columns:160px minmax(0,1fr) 160px;align-items:start;gap:1.5rem;width:100%;max-width:1200px;margin:2rem auto;padding:0 1rem;display:grid}.ad-banner{background:var(--ad-bg);border-radius:8px;width:160px;height:600px;display:block;overflow:hidden}.adsbygoogle{width:160px!important;height:600px!important;display:block!important}.main-content{min-width:0}.clock-widget{text-align:center;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;margin-bottom:1.5rem;padding:1rem}.clock-label{color:var(--text-secondary);font-size:.85rem}.clock-display{color:var(--accent-color);margin-top:.25rem;font-size:2.25rem;font-weight:700}.calculator-tabs{gap:.5rem;margin-bottom:1rem;display:flex}.calculator-tabs button{border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-primary);cursor:pointer;border-radius:6px;flex:1;padding:.75rem;font-weight:600;transition:background-color .2s,color .2s}.calculator-tabs button.active{background-color:var(--accent-color);color:#fff;border-color:var(--accent-color)}.card-calculator{background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem}.card-calculator h2{margin-bottom:1rem;font-size:1.25rem}.form-group{flex-direction:column;gap:.5rem;margin-bottom:1rem;display:flex}.form-group.row{flex-direction:row}input,select{border:1px solid var(--border-color);background:var(--bg-color);color:var(--text-primary);border-radius:6px;padding:.6rem;font-size:1rem}input:focus,select:focus{outline:2px solid var(--accent-color);border-color:var(--accent-color)}.result-box{background-color:var(--bg-color);text-align:center;border-radius:6px;margin-top:1.5rem;padding:1rem}.result-box h3{color:var(--accent-color);margin-top:.25rem;font-size:1.5rem}.privacy-footer{text-align:center;background-color:var(--footer-bg);border-top:1px solid var(--border-color);width:100%;margin-top:auto;padding:1rem 2rem;transition:background-color .3s,color .3s}.privacy-footer a{color:var(--text-secondary);font-size:.9rem;text-decoration:none}.privacy-footer a:hover{color:var(--accent-color);text-decoration:underline}@media (width<=900px){.layout-body{grid-template-columns:1fr}.ad-banner{display:none}}@media (width<=600px){.app-header{padding:1rem}.clock-display{font-size:1.75rem}.form-group.row{flex-direction:column}.privacy-footer{padding:1rem}}.privacy-page{width:100%;max-width:900px;margin:2rem auto;padding:0 1rem}.privacy-page p{color:var(--text-secondary);margin-bottom:1rem;line-height:1.7}.privacy-page h3{color:var(--text-primary);margin-top:1.5rem;margin-bottom:.5rem}