:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg: linear-gradient(145deg, #f7f7ff, #e5ecff);--surface: #ffffff;--text: #0f172a;--muted: #475569;--primary: #2563eb;--primary-strong: #1d4ed8;--outline: #d9e0f0;--shadow: 0 20px 60px rgba(15, 23, 42, .15)}:root[data-theme=dark]{--bg: radial-gradient(circle at 20% 20%, #1f2a44, #0b1022 50%), #0b1022;--surface: #0f172a;--text: #e2e8f0;--muted: #94a3b8;--primary: #8b5cf6;--primary-strong: #7c3aed;--outline: #1e293b;--shadow: 0 20px 60px rgba(0, 0, 0, .35)}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;justify-content:center;align-items:center;background:var(--bg);font-family:Sora,Segoe UI,system-ui,-apple-system,sans-serif;color:var(--text);padding:2rem 1.25rem;transition:background .35s ease,color .35s ease}.app__header{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}.app__titles h1{margin:.15rem 0 0;font-size:1.9rem;letter-spacing:-.03em}.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:.75rem;color:var(--muted);margin:0}.theme-toggle{display:inline-flex;align-items:center;gap:.5rem;padding:.65rem 1rem;border-radius:999px;border:1px solid var(--outline);background:transparent;color:var(--text);cursor:pointer;font-weight:600;transition:all .2s ease}.theme-toggle:hover{border-color:var(--primary);color:var(--primary)}.theme-toggle__icon{font-size:1rem}h2{margin:0 0 .25rem;font-size:1.4rem;letter-spacing:-.02em}.card{background:linear-gradient(140deg,#ffffffe6,#ffffffd9);border-radius:16px;padding:1.5rem;border:1px solid var(--outline);box-shadow:0 10px 30px #0000000f;transition:transform .2s ease,box-shadow .2s ease}:root[data-theme=dark] .card{background:linear-gradient(140deg,#0f172af2,#0f172ad9)}.card:hover{transform:translateY(-2px);box-shadow:0 16px 40px #00000014}.card--ghost{background:transparent;box-shadow:none}.calc{display:flex;flex-direction:column;gap:1.25rem}.calc__heading{display:flex;align-items:center;justify-content:space-between;gap:1rem}.calc .eyebrow{color:var(--primary)}.mode{display:inline-flex;background:#0000000a;border-radius:999px;padding:.25rem;gap:.25rem;border:1px solid var(--outline)}:root[data-theme=dark] .mode{background:#ffffff0a}.mode__option{display:inline-flex;align-items:center;gap:.35rem;padding:.4rem .75rem;border-radius:999px;font-weight:600;color:var(--muted);cursor:pointer;transition:all .2s ease}.mode__option input{appearance:none;width:10px;height:10px;border-radius:50%;border:2px solid var(--muted);display:inline-block;position:relative}.mode__option--active{background:var(--primary);color:#fff;box-shadow:0 10px 30px #2563eb59}.mode__option--active input{border-color:#fff;background:#fff}.inputs{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1rem}.field{display:flex;flex-direction:column;gap:.4rem;font-weight:600}.field span{color:var(--muted);font-size:.9rem}input{width:100%;border-radius:12px;border:1px solid var(--outline);padding:.75rem .9rem;font-size:1rem;color:var(--text);background:#ffffffb3;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}:root[data-theme=dark] input{background:#ffffff08}input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #2563eb26}.buttons{display:flex;flex-wrap:wrap;gap:.75rem}.btn{border:1px solid var(--outline);background:transparent;color:var(--text);padding:.75rem 1.15rem;border-radius:12px;font-weight:700;cursor:pointer;transition:all .2s ease;min-width:140px}.btn:hover{border-color:var(--primary);color:var(--primary)}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 12px 28px #2563eb40}.btn-primary:hover{background:var(--primary-strong);border-color:var(--primary-strong);color:#fff}.btn-ghost{border-style:dashed}.result{margin:0;font-weight:700;color:var(--text);font-size:1.05rem}@media(max-width:720px){.app{padding:1.5rem}.app__header,.calc__heading{flex-direction:column;align-items:flex-start}.buttons{flex-direction:column}.btn{width:100%}.app{min-height:100vh;min-width:100vw;width:100vw;height:100vh;box-sizing:border-box;padding:2rem;display:flex;flex-direction:column;align-items:center;justify-content:flex-start}}