:root{
  --bg: linear-gradient(180deg,#f7f8ff,#f0fcf9);
  --card:#ffffff; --muted:#6b7280; --accent1:#7c3aed; --accent2:#06b6d4;
  --success:#10b981; --danger:#ef4444;
  --glass: rgba(255,255,255,0.8);
  --shadow: 0 12px 30px rgba(15,23,42,0.08);
  --radius:14px;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,Segoe UI,Roboto,Arial; margin:0; background:var(--bg); color:#0b1220;}
.page{max-width:1100px;margin:28px auto;padding:18px}
.hero{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}
.hero h1{margin:0;font-size:28px}
.lead{margin:6px 0 0;color:var(--muted)}
.hero-badge{background:linear-gradient(90deg,var(--accent1),var(--accent2));padding:8px 12px;border-radius:999px;color:white;font-weight:700}

.card.grid{display:grid;grid-template-columns:380px 1fr;gap:18px;align-items:start}
.panel{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.panel h2{margin:0 0 12px}
label{display:block;font-weight:700;margin-top:10px;margin-bottom:6px}
input[type="number"], input[type="text"], select, textarea{
  width:100%;padding:10px;border-radius:10px;border:1px solid #e6eef6;background:linear-gradient(180deg,#fff,#fbfdff);
  font-size:14px;color:#0b1220;
}
textarea{min-height:70px;resize:vertical}
.row{display:flex;gap:8px}
.actions{display:flex;gap:8px;margin-top:12px}
button{background:linear-gradient(90deg,var(--accent1),var(--accent2));color:white;border:0;padding:10px 12px;border-radius:10px;cursor:pointer;font-weight:700}
button.ghost{background:transparent;border:1px solid #e6eef6;color:var(--accent1)}
.hidden{display:none}
.disclaimer{font-size:13px;color:var(--muted);margin-top:12px}

/* unit buttons */
.unit-btn{flex:1;padding:8px;border-radius:8px;border:1px solid transparent;cursor:pointer;background:linear-gradient(180deg,#fff,#fbfdff)}
.unit-btn.active{background:linear-gradient(90deg,var(--accent2),var(--accent1));color:white;border-color:rgba(0,0,0,0.06)}

/* results */
.results .result-grid{display:flex;gap:12px;flex-wrap:wrap}
.tile{flex:1;min-width:160px;background:linear-gradient(180deg,#fff,#fbfdff);border-radius:10px;padding:12px;border:1px solid #eef3fb}
.tile-title{font-size:13px;color:var(--muted);font-weight:700}
.tile-value{font-size:20px;font-weight:800;margin-top:6px;color:var(--accent1)}
.tile-sub{font-size:13px;margin-top:6px}

/* progress */
.progress-wrap{margin-top:12px}
.progress{height:12px;background:#eef3fb;border-radius:10px;overflow:hidden}
.progress-bar{height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent1));width:0%}
.progress-label{font-size:13px;margin-top:8px;color:var(--muted)}

/* diet plan */
.plan{background:linear-gradient(180deg,#fbf9ff,#fff);padding:10px;border-radius:8px;border:1px solid #f1efff}
.plan-details{margin-top:8px}
#meals .meal{padding:8px;border-radius:8px;border:1px dashed #eef3fb;margin-bottom:8px;background:#fff}
#meals .meal h5{margin:0 0 6px}
#meals .meal p{margin:0;color:var(--muted);font-size:14px}
#dietTips{margin:8px 0 0;color:var(--muted)}

/* responsive */
@media (max-width:980px){
  .card.grid{grid-template-columns:1fr}
  .hero{flex-direction:column;align-items:flex-start;gap:8px}
}