:root{
  --bg:#f6f7fb; --card:#fff; --ink:#0f172a; --muted:#64748b; --line:#e5e7eb;
  --brand:#4f46e5; --brand-d:#4338ca; --green:#059669; --amber:#b45309; --red:#dc2626;
  --radius:14px; --shadow:0 1px 3px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.05);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,Arial,sans-serif;font-size:15px;line-height:1.55}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:24px 18px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px;position:sticky;top:0;z-index:20;flex-wrap:wrap}
.brand{font-weight:800;font-size:19px;color:var(--ink)}.brand span{color:var(--brand)}
.topbar nav{display:flex;gap:15px;align-items:center;flex-wrap:wrap}
.topbar nav a{color:var(--muted);font-weight:600;font-size:14px}
.inline{display:inline}.link{background:none;border:0;color:var(--muted);font:inherit;font-weight:600;cursor:pointer;padding:0}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:24px}

h1{font-size:26px;margin:0 0 6px}h2{font-size:19px;margin:22px 0 12px}
.muted{color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:18px}
.grid.stats{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat b{display:block;font-size:24px}.stat span{color:var(--muted);font-size:13px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;min-width:560px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);font-size:14px}
th{background:#f8fafc;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
tr:last-child td{border-bottom:0}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge.confirmed{background:#d1fae5;color:#065f46}.badge.cancelled{background:#fee2e2;color:#991b1b}
.badge.on{background:#d1fae5;color:#065f46}.badge.off{background:#fee2e2;color:#991b1b}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:10px;padding:11px 18px;font-weight:700;font-size:15px;cursor:pointer;text-align:center}
.btn:hover{background:var(--brand-d);text-decoration:none;color:#fff}
.btn.green{background:var(--green)}.btn.red{background:var(--red)}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.sm{padding:7px 12px;font-size:13px}.btn.block{display:block;width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
label{display:block;font-weight:600;font-size:13px;margin:12px 0 5px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.row{display:flex;gap:14px;flex-wrap:wrap}.row>*{flex:1;min-width:160px}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}
.notice{padding:12px 16px;border-radius:10px;margin:14px 0;font-size:14px}
.notice.warn{background:#fffbeb;border:1px solid #fde68a;color:var(--amber)}
.notice.err{background:#fee2e2;border:1px solid #fecaca;color:#991b1b}
.notice.ok{background:#d1fae5;border:1px solid #a7f3d0;color:#065f46}
.pill{display:inline-block;background:#eef2ff;color:var(--brand);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700}

/* meeting type cards (landing) */
.type-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.type-card{display:block;background:#fff;border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:12px;padding:18px;box-shadow:var(--shadow)}
.type-card:hover{text-decoration:none;transform:translateY(-1px);transition:.15s}
.type-card h3{margin:0 0 6px;color:var(--ink)}
.type-card .dur{color:var(--muted);font-size:13px;font-weight:600}

/* scheduler */
.sched{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:860px){.sched{grid-template-columns:300px 1fr 240px}}
.cal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.cal-head button{background:#fff;border:1px solid var(--line);border-radius:8px;width:32px;height:32px;cursor:pointer;font-size:16px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.cal .dow{text-align:center;color:var(--muted);font-size:11px;font-weight:700;padding:4px 0}
.cal .day{aspect-ratio:1;border:0;background:#f1f5f9;border-radius:9px;font-weight:600;color:#cbd5e1;cursor:default;font-size:14px}
.cal .day.avail{background:#eef2ff;color:var(--brand);cursor:pointer}
.cal .day.avail:hover{background:var(--brand);color:#fff}
.cal .day.sel{background:var(--brand);color:#fff}
.cal .day.empty{background:transparent}
.slots{display:flex;flex-direction:column;gap:8px;max-height:420px;overflow-y:auto}
.slot{border:1px solid var(--brand);color:var(--brand);background:#fff;border-radius:9px;padding:11px;font-weight:700;cursor:pointer;text-align:center}
.slot:hover{background:#eef2ff}.slot.sel{background:var(--brand);color:#fff}
.tzbar{font-size:13px;color:var(--muted);margin-top:10px}
.tzbar select{display:inline-block;width:auto;padding:5px 8px;font-size:13px}
.summary-box{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:14px;font-size:14px}
.summary-box .when{font-weight:700;color:var(--ink)}

/* weekly availability editor */
.wk-day{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.wk-day .name{flex:0 0 100px;font-weight:700;padding-top:6px}
.wk-windows{flex:1;display:flex;flex-direction:column;gap:8px}
.wk-win{display:flex;align-items:center;gap:8px}
.wk-win input{width:auto}
.wk-win .x{color:var(--red);cursor:pointer;font-weight:800;border:0;background:none}
.add-win{background:none;border:1px dashed var(--line);border-radius:8px;color:var(--muted);cursor:pointer;padding:6px 10px;font-size:13px;align-self:flex-start}