:root{--bg: #f4f6fa;--text: #1d1d1d;--card: #ffffff;--border: #d6d6d6;--shadow: rgba(0,0,0,.12);--input-bg: #f7f9fc}[data-theme=dark]{--bg: #121416;--text: #f1f1f1;--card: #1d1f22;--border: #333;--shadow: rgba(0,0,0,.6);--input-bg: #1a1c1f}body{background:var(--bg);color:var(--text);font-family:Segoe UI,sans-serif}.modern-layout{display:flex;gap:40px;padding:30px}.theme-toggle{margin:15px;padding:10px 18px;border-radius:10px;border:1px solid var(--border);background:var(--card);cursor:pointer;color:var(--text)}.left-panel{width:60%;display:flex;flex-direction:column;gap:30px}.card,.result-card{background:var(--card);padding:24px;border-radius:16px;box-shadow:0 6px 20px var(--shadow);border:1px solid var(--border)}.card h2,.result-card h2,.right-panel h2{margin-bottom:20px;font-size:22px;font-weight:700}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.grid label{display:flex;flex-direction:column;font-size:14px;font-weight:600}.grid input{margin-top:6px;padding:10px;border-radius:8px;border:1px solid var(--border);background:var(--input-bg);color:var(--text)}.calculate-button{margin-top:20px;width:100%;padding:12px;font-size:16px;border-radius:10px;border:none;background:linear-gradient(to right,#f15a22,#ff7f4f);color:#fff;cursor:pointer}.donut-wrapper{position:relative;width:260px;margin:auto}.center-label{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:28px;font-weight:700}.right-panel{width:40%;max-height:90vh;overflow-y:auto;padding-right:10px}.scenario-card{background:var(--card);border:1px solid var(--border);padding:16px;margin-bottom:16px;border-radius:14px;box-shadow:0 4px 14px var(--shadow)}.scenario-row{display:flex;justify-content:space-between;align-items:center}.scenario-percent{font-size:20px;font-weight:700;color:#f15a22}.scenario-date{font-size:12px;color:gray}.scenario-details{margin-top:12px;font-size:14px}.actions button{background:none;border:none;cursor:pointer;color:var(--text);font-size:18px}.delete{margin-left:8px;font-size:18px;color:red}