:root{
  --bg:#f6f7fb; --card:#ffffff; --ink:#1f2430; --muted:#7a8194;
  --line:#e3e6ef; --accent:#5b7cfa; --accent2:#eef1ff; --today:#fff7e6;
  --cancel:#9aa0ae; --ok:#22c55e; --err:#ef4444;
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:var(--bg);color:var(--ink)}
a{color:var(--accent);text-decoration:none}
code{background:#eef0f6;padding:1px 5px;border-radius:4px;font-size:12px}

.topbar{display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:14px 16px;background:var(--card);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:5;flex-wrap:wrap}
.brand{font-weight:700;font-size:16px}
.brand span{font-weight:400;color:var(--muted)}
.meta{display:flex;align-items:center;gap:10px;font-size:13px}
.muted{color:var(--muted)}
.small{font-size:12px}
.dot{color:#c8ccd8;font-size:11px;transition:color .2s}
.dot.ok{color:var(--ok)}
.dot.err-dot{color:var(--err)}
.btn-ghost{border:1px solid var(--line);padding:5px 10px;border-radius:8px;color:var(--ink)}

.tabs{display:flex;gap:8px;padding:12px 16px 0}
.tab{border:1px solid var(--line);background:var(--card);color:var(--ink);
  padding:8px 14px;border-radius:10px 10px 0 0;cursor:pointer;font-size:14px;
  border-bottom:none}
.tab.active{background:var(--accent2);border-color:var(--accent);color:var(--accent);font-weight:600}

main{padding:0 16px 24px}
.grid-wrap,.list-wrap{background:var(--card);border:1px solid var(--line);
  border-radius:0 12px 12px 12px;overflow:auto;padding:4px}

table.sched{border-collapse:collapse;width:100%;min-width:640px}
table.sched th,table.sched td{border:1px solid var(--line);padding:7px 9px;
  vertical-align:top;font-size:13px}
table.sched thead th{background:#f0f2f8;position:sticky;top:0;font-size:13px}
table.sched td.timecol,table.sched th.timecol{background:#fafbff;font-weight:700;
  white-space:nowrap;text-align:center;position:sticky;left:0}
table.sched td.today{background:var(--today)}
.empty{color:#cdd2dd}
.cancel{color:var(--cancel)}

footer{padding:10px 16px 28px}

/* login */
body.center{display:flex;align-items:center;justify-content:center;min-height:100vh}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:26px;box-shadow:0 8px 30px rgba(30,40,80,.06)}
.login{width:min(92vw,360px);display:flex;flex-direction:column;gap:12px}
.login h1{font-size:19px;margin:0}
.login input{padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.login button{padding:11px;border:none;border-radius:10px;background:var(--accent);
  color:#fff;font-size:15px;font-weight:600;cursor:pointer}
.err{background:#fdecec;color:#b42318;padding:8px 10px;border-radius:8px;font-size:13px}