/* ============================================================
   AlphaCare  -  Shared styles
   Teal/clean medical theme. Used across all panels.
   ============================================================ */
:root{
  --teal:#0d9488; --teal-dark:#0f766e; --teal-light:#ccfbf1;
  --ink:#111827; --muted:#6b7280; --line:#e5e7eb; --bg:#f8fafc;
  --green:#16a34a; --red:#dc2626; --amber:#d97706; --blue:#2563eb;
  --radius:10px; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}
a{color:var(--teal-dark);text-decoration:none}
a:hover{text-decoration:underline}

/* layout */
.container{max-width:1100px;margin:0 auto;padding:24px}
.narrow{max-width:480px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;margin-bottom:20px}
.row{display:flex;gap:16px;flex-wrap:wrap}
.col{flex:1;min-width:220px}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:760px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* top app header */
.appbar{background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
.appbar .inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;padding:12px 24px;gap:16px}
.appbar .logo{font-weight:800;font-size:20px;color:var(--teal-dark);display:flex;align-items:center;gap:8px}
.appbar .logo .dot{width:14px;height:14px;border-radius:50%;background:var(--teal)}
.appbar nav a{margin:0 8px;color:var(--muted);font-weight:600}
.appbar nav a.active,.appbar nav a:hover{color:var(--teal-dark);text-decoration:none}
.appbar .user{display:flex;align-items:center;gap:12px;font-size:14px}

/* headings */
h1{font-size:24px;margin:0 0 4px}
h2{font-size:19px;margin:0 0 12px}
.subtitle{color:var(--muted);margin:0 0 20px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}

/* buttons */
.btn{display:inline-block;background:var(--teal);color:#fff;border:0;border-radius:8px;
  padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;text-align:center}
.btn:hover{background:var(--teal-dark);text-decoration:none}
.btn-ghost{background:#fff;color:var(--teal-dark);border:1px solid var(--teal)}
.btn-ghost:hover{background:var(--teal-light)}
.btn-danger{background:var(--red)}
.btn-muted{background:#e5e7eb;color:var(--ink)}
.btn-sm{padding:6px 10px;font-size:13px}
.btn-block{display:block;width:100%}

/* forms */
label{display:block;font-weight:600;font-size:13px;margin:12px 0 4px;color:#374151}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select,textarea:focus{outline:2px solid var(--teal-light);border-color:var(--teal)}
textarea{min-height:90px;resize:vertical}
.check-row{display:flex;align-items:center;gap:8px;margin:8px 0}
.check-row input{width:auto}
.hint{font-size:12px;color:var(--muted);margin-top:4px}

/* tables / lists */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{background:#f9fafb;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
tr:hover td{background:#fafdfc}

/* badges */
.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:600}
.badge-green{background:#dcfce7;color:#166534}
.badge-red{background:#fee2e2;color:#991b1b}
.badge-amber{background:#fef3c7;color:#92400e}
.badge-blue{background:#dbeafe;color:#1e40af}
.badge-gray{background:#f3f4f6;color:#374151}
.badge-teal{background:var(--teal-light);color:var(--teal-dark)}

/* flash messages */
.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:14px;font-weight:500}
.flash-success{background:#dcfce7;color:#166534;border:1px solid #86efac}
.flash-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}
.flash-info{background:#dbeafe;color:#1e40af;border:1px solid #93c5fd}

/* search bar */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar input,.toolbar select{width:auto;flex:0 0 auto}
.toolbar .search{flex:1;min-width:200px}

/* pagination */
.pager{margin-top:16px;display:flex;gap:6px;flex-wrap:wrap}
.pager a{padding:6px 11px;border:1px solid var(--line);border-radius:6px;color:var(--muted)}
.pager a.active{background:var(--teal);color:#fff;border-color:var(--teal)}

/* stat cards */
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .num{font-size:28px;font-weight:800;color:var(--teal-dark)}
.stat .lbl{color:var(--muted);font-size:13px;margin-top:2px}

/* auth pages */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.auth-box{width:100%;max-width:420px}
.auth-logo{text-align:center;font-weight:800;font-size:26px;color:var(--teal-dark);margin-bottom:6px}
.auth-sub{text-align:center;color:var(--muted);margin-bottom:24px;font-size:14px}
.center{text-align:center}
.mt{margin-top:16px}.mb{margin-bottom:16px}

/* exam runner */
.q-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.q-opt{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);
  border-radius:8px;margin:8px 0;cursor:pointer;transition:.12s}
.q-opt:hover{border-color:var(--teal);background:#fafdfc}
.q-opt.sel{border-color:var(--teal);background:var(--teal-light)}
.q-opt.correct{border-color:var(--green);background:#dcfce7}
.q-opt.wrong{border-color:var(--red);background:#fee2e2}
.timer{font-weight:800;font-size:18px;color:var(--red)}
.progress{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin:12px 0}
.progress > div{height:100%;background:var(--teal)}
.expl{background:#f0fdfa;border-left:4px solid var(--teal);padding:14px 16px;border-radius:8px;margin-top:16px}
.q-img{max-width:100%;border-radius:8px;margin:12px 0}

/* rich text content */
.rich{line-height:1.6}
.rich p{margin:0 0 8px}
.rich ul,.rich ol{margin:0 0 8px 22px}
.rich h3,.rich h4{margin:10px 0 6px;color:var(--ink)}
.rich:last-child{margin-bottom:0}

/* question & explanation images: centered, capped, tidy */
.q-img{display:block;max-width:100%;max-height:320px;width:auto;height:auto;
  margin:14px auto;border-radius:10px;border:1px solid var(--line);object-fit:contain}
.expl .q-img{max-height:240px}
.exp-thumbs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:10px}
.exp-thumbs img{max-height:160px;border-radius:8px;border:1px solid var(--line)}