:root{--primary:#0f766e;--bg:#f4f7f8;--text:#1f2937;--muted:#6b7280;--card:#fff;--line:#dce5e7}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#e0f2f1,#f8fafc)}.login-card,.card{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(15,118,110,.08)}.login-card{width:min(420px,92vw);padding:30px}.input,select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff}.btn{border:0;border-radius:12px;padding:11px 16px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.btn.secondary{background:#e5f3f1;color:#0f766e}.btn.light{background:#fff;color:var(--primary);border:1px solid var(--line)}.app{display:flex;min-height:100vh}.sidebar{width:250px;background:#0f3f3b;color:#fff;padding:18px;position:sticky;top:0;height:100vh}.brand{font-weight:800;font-size:20px;margin-bottom:22px}.nav a{display:block;padding:12px 14px;border-radius:12px;margin:4px 0;color:#e6fffb}.nav a.active,.nav a:hover{background:rgba(255,255,255,.12)}.main{flex:1;padding:22px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:1.2fr .8fr}.grid-3{grid-template-columns:repeat(3,1fr)}.card{padding:18px}.muted{color:var(--muted)}.kpi{font-size:28px;font-weight:800;color:var(--primary)}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:9px 12px;border-radius:999px;background:#e5f3f1;color:#0f766e;border:0;cursor:pointer;font-weight:700}.chip.active{background:var(--primary);color:#fff}.study-card{border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;justify-content:space-between;gap:10px;margin-bottom:8px;background:#fff}.line-item{display:flex;justify-content:space-between;gap:8px;border-bottom:1px solid #eef2f3;padding:8px 0}.total{font-size:26px;font-weight:900}.table-wrap{overflow:auto}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.actions{display:flex;gap:8px;flex-wrap:wrap}.badge{font-size:12px;border-radius:999px;background:#eef8f7;color:#0f766e;padding:4px 8px}label{font-size:13px;font-weight:700;color:#374151}hr{border:0;border-top:1px solid var(--line);margin:16px 0}@media(max-width:900px){.app{display:block}.sidebar{width:auto;height:auto;position:static}.grid-2,.grid-3,.form-grid{grid-template-columns:1fr}.main{padding:14px}.topbar{align-items:flex-start;gap:12px;flex-direction:column}}