:root{
  --blue:#0b5fff; --blue-dark:#0847c2; --orange:#ea7a1e; --ink:#17202b; --muted:#5b6b7a;
  --line:#dbe3ea; --bg:#f4f7fa; --card:#fff; --warn-bg:#fff4d6; --warn:#7a5200;
  --err-bg:#fdecea; --err:#8f1d16; --ok-bg:#e6f4ea; --ok:#1e6b34; --help-bg:#fff0f0;
  --radius:12px; --tap:48px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
h1{font-size:1.5rem;margin:0} h2{font-size:1.3rem;margin:.2rem 0 .8rem} h3{font-size:1.05rem;margin:.2rem 0 .6rem}
p{margin:.4rem 0} a{color:var(--blue)}
button,input,select{font:inherit}
button{cursor:pointer}
.hidden{display:none !important}
.muted{color:var(--muted)} .small{font-size:.88rem} .center{text-align:center} .break-all{word-break:break-all}
.container{max-width:1080px;margin:0 auto;padding:12px 14px 48px}
.app-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-inner{max-width:1080px;margin:0 auto;padding:10px 14px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:56px;height:56px;border-radius:12px;flex:0 0 auto}
.login-logo{display:block;width:220px;max-width:70%;height:auto;margin:0 auto 12px}
.subtitle{margin:0;color:var(--muted);font-size:.9rem}
.header-actions{display:flex;gap:8px;align-items:center}
.user-chip{background:#eef4ff;border:1px solid #cfe0ff;padding:6px 10px;border-radius:999px;font-size:.9rem}
.main-nav{max-width:1080px;margin:0 auto;padding:0 14px 10px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:thin}
.nav-btn{flex:0 0 auto;min-height:44px;padding:8px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;color:var(--ink)}
.nav-btn.active{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.stack>*{margin-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:var(--tap);padding:10px 16px;border-radius:10px;border:1px solid transparent;text-decoration:none;font-weight:600}
.btn-primary{background:var(--blue);color:#fff} .btn-primary:hover{background:var(--blue-dark)}
.btn-secondary{background:#eef4ff;color:var(--blue-dark);border-color:#cfe0ff}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-danger{background:var(--err);color:#fff}
.btn-large{width:100%}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}
.view-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.field{display:block;margin-bottom:10px;font-weight:600}
.field input,.field select{width:100%;min-height:var(--tap);margin-top:4px;padding:10px 12px;border:1px solid #b9c6d2;border-radius:10px;background:#fff;font-weight:400}
.field.inline{display:inline-flex;align-items:center;gap:8px} .field.inline input{width:auto}
.form-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.form-row .grow{flex:1;min-width:180px}
.form-grid{display:grid;gap:4px 12px;grid-template-columns:1fr}
.checkbox-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.checkbox-list label{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:6px 12px;border:1px solid var(--line);border-radius:999px;font-weight:400;background:#fff}
.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px}
.alert-error{background:var(--err-bg);color:var(--err);border:1px solid #f5c6c2}
.alert-warn{background:var(--warn-bg);color:var(--warn);border:1px solid #f0d48a}
.alert-ok{background:var(--ok-bg);color:var(--ok);border:1px solid #bfe3c8}
.badge{background:#d92d20;color:#fff;border-radius:999px;padding:1px 8px;font-size:.8rem;margin-left:4px}
.leg{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:14px 16px;margin-bottom:14px}
.leg-head{display:flex;justify-content:space-between;gap:10px;align-items:baseline;flex-wrap:wrap}
.leg-head h3{margin:0}
.leg-time{font-weight:700}
.car{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-top:10px;background:#fbfcfe}
.car-head{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.kid-list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.kid-list li,.kid-pill{background:#eef4ff;border-radius:999px;padding:6px 10px;font-size:.92rem}
.status{font-size:.82rem;font-weight:700;padding:2px 8px;border-radius:999px;text-transform:uppercase;letter-spacing:.02em}
.status-assigned{background:var(--ok-bg);color:var(--ok)}
.status-na{background:#eceff3;color:var(--muted)}
.status-uncovered{background:var(--err-bg);color:var(--err)}
.uncovered{border-color:#e8a49f;background:var(--help-bg)}
.need-help-card{border:2px solid #d92d20;background:#fff5f5}
.tag{display:inline-block;background:#ffe9e7;color:#8f1d16;border-radius:6px;padding:2px 8px;font-size:.82rem;font-weight:700}
.day-grid{display:grid;gap:12px}
.week-day{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:12px}
.week-day.blackout{background:#f1f3f5;color:var(--muted)}
.week-day h3{margin:0 0 6px}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-size:.85rem}
.family-list{list-style:none;padding:0;margin:0}
.family-list li{padding:8px 0;border-bottom:1px solid var(--line)}
.login-card{max-width:560px;margin:0 auto 14px}
hr{border:none;border-top:1px solid var(--line);margin:18px 0}
dialog{border:1px solid var(--line);border-radius:14px;padding:18px;max-width:640px;width:calc(100% - 28px)}
dialog::backdrop{background:rgba(0,0,0,.45)}
.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:10px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;background:var(--ink);color:#fff;padding:12px 18px;border-radius:999px;z-index:50;max-width:calc(100% - 28px);text-align:center}
.two-col{display:grid;gap:14px}
.assign-row{display:grid;grid-template-columns:1fr;gap:8px;padding:10px 0;border-bottom:1px solid var(--line);align-items:center}
.assign-row label{font-weight:600}
@media (min-width:640px){
  .form-grid{grid-template-columns:1fr 1fr}
  .assign-row{grid-template-columns:1fr 1fr 1fr}
  .day-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:900px){
  .container{padding:20px 24px 64px}
  h1{font-size:1.75rem}
  .two-col{grid-template-columns:1fr 1fr}
  .day-grid{grid-template-columns:repeat(3,1fr)}
  .week-day{padding:16px}
  .form-grid{grid-template-columns:1fr 1fr 1fr auto}
  .form-grid .btn{align-self:end}
}
.app-footer{text-align:center;padding:18px 16px 28px;color:var(--muted)}