/* TeachRepublic — shared design system for every product page
   (dashboard, student, batch, payment, classes, admin). One file; no page defines its own tokens. */

:root{
  --paper:#f8f7f4; --white:#fff; --ink:#111827; --text:#2b3443; --muted:#6b7280; --faint:#9aa3b2;
  --rule:#e3e1db; --rule-strong:#c9c6bd; --wash:#efede8;
  --navy:#1e3a8a; --navy-deep:#172c6b; --navy-wash:#eef2fb;
  --green:#15803d; --green-wash:#ecf8ef;
  --amber:#b45309; --amber-wash:#fdf4e3;
  --red:#b42318; --red-wash:#fdf0f0;
  --teal:#0e7490; --teal-deep:#155e75; --teal-wash:#e6f6f9;
  --brand-line:linear-gradient(90deg,var(--navy) 0%,var(--teal) 100%);
  --serif:'Fraunces',Georgia,serif; --sans:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif; --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  --r:10px; --tap:44px;
  --lift:0 1px 2px rgba(17,24,39,.04),0 6px 16px -12px rgba(17,24,39,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--sans);background:var(--paper);color:var(--text);line-height:1.5;font-size:1rem;-webkit-font-smoothing:antialiased;min-height:100vh}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--navy);outline-offset:2px;border-radius:4px}
h1,h2{font-family:var(--serif);font-weight:500;color:var(--ink);letter-spacing:-.005em;line-height:1.15}
h1{font-size:1.75rem}h2{font-size:1.25rem}
h3{font-size:1rem;font-weight:600;color:var(--ink)}
small,.muted{color:var(--muted)}
.mono{font-family:var(--mono);font-size:.82rem}
.eyebrow{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}

/* icons: inline SVG, 20px, currentColor, always beside a text label */
.ic{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* app shell: top bar + content; bottom tab bar on phones, left rail on wide screens */
.shell{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh}
.topbar{position:sticky;top:0;z-index:20;background:rgba(248,247,244,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule);height:56px;border-top:3px solid transparent;border-image:var(--brand-line) 1;display:flex;align-items:center;gap:.75rem;padding:0 16px}
.topbar .brand{font-family:var(--serif);font-weight:600;color:var(--ink);display:flex;align-items:center;gap:.5rem}
.topbar .brand svg{width:26px;height:20px;color:var(--navy)}
.topbar .grow{flex:1}
.topbar .btn{padding:.45rem .8rem;font-size:.85rem}
.content{padding:16px;width:min(720px,100%);margin:0 auto}
.content>*{animation:up .35s cubic-bezier(.2,.7,.2,1) both}
.content>*:nth-child(2){animation-delay:.05s}.content>*:nth-child(3){animation-delay:.1s}.content>*:nth-child(4){animation-delay:.15s}.content>*:nth-child(5){animation-delay:.2s}.content>*:nth-child(6){animation-delay:.25s}.content>*:nth-child(7){animation-delay:.3s}.content>*:nth-child(8){animation-delay:.35s}
@media (prefers-reduced-motion:reduce){.content>*{animation:none}}
.tabbar{position:sticky;bottom:0;z-index:20;background:var(--white);border-top:1px solid var(--rule);display:grid;grid-template-columns:repeat(4,1fr);padding:6px 0 max(6px,env(safe-area-inset-bottom))}
.tabbar a{display:flex;flex-direction:column;align-items:center;gap:3px;font-size:.7rem;font-weight:600;color:var(--muted);padding:6px 0;min-height:var(--tap)}
.tabbar a[aria-current="page"]{color:var(--navy)}
.tabbar.student a[aria-current="page"]{color:var(--teal)}
.tabbar .ic{width:22px;height:22px}
.hero-band{background:linear-gradient(135deg,var(--navy-wash),var(--teal-wash));border:1px solid #d9e6ee;border-radius:12px;padding:16px 18px;margin-bottom:14px}
.hero-band h1{margin-top:.15rem}
.avatar{width:32px;height:32px;border-radius:50%;display:inline-grid;place-items:center;font-size:.8rem;font-weight:700;color:#fff;background:var(--navy);flex:none}
.avatar.h1{background:#4f6fd8}.avatar.h2{background:#0e9f8a}.avatar.h3{background:#c26a3d}.avatar.h4{background:#7c5cbf}.avatar.h5{background:#c0397a}.avatar.h6{background:#3b8bd0}
@media (min-width:900px){
  .shell{
    display:grid;
    grid-template-columns:1fr 220px minmax(0,880px) 1fr;
    grid-template-rows:auto 1fr;
    min-height:100vh;
  }
  .topbar{
    grid-column:1/-1;
    width:100%;
    padding:0 max(24px, calc((100vw - 1100px) / 2));
    box-sizing:border-box;
  }
  .shell .tabbar{
    grid-row:2;
    grid-column:2;
    position:sticky;
    top:56px;
    align-self:start;
    height:calc(100vh - 56px);
    display:flex;
    flex-direction:column;
    border-top:0;
    border-right:1px solid var(--rule);
    background:transparent;
    padding:16px 12px;
    gap:2px;
  }
  .shell .tabbar a{
    flex-direction:row;
    gap:.6rem;
    font-size:.92rem;
    padding:.6rem .75rem;
    border-radius:var(--r);
  }
  .shell .tabbar a[aria-current="page"]{background:var(--navy-wash)}
  .shell .tabbar.student a[aria-current="page"]{background:var(--teal-wash)}
  .shell .content{
    grid-row:2;
    grid-column:3;
    width:100%;
    max-width:880px;
    padding:28px 32px;
    margin:0;
  }
  #signInPrompt{grid-column:1/-1}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:var(--tap);padding:.6rem 1rem;border-radius:var(--r);font-weight:600;font-size:.92rem;border:1px solid transparent;transition:background .15s,border-color .15s}
.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover{background:var(--navy-deep)}
.btn-green{background:var(--green);color:#fff}
.btn-accent{background:var(--teal);color:#fff}.btn-accent:hover{background:var(--teal-deep)}
.btn-quiet{border-color:var(--rule-strong);color:var(--ink);background:var(--white)}.btn-quiet:hover{border-color:var(--ink)}
.btn-wa{background:#128c7e;color:#fff}
.btn-block{width:100%}
.btn-sm{min-height:36px;padding:.35rem .7rem;font-size:.85rem}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--wash);color:var(--faint);border-color:transparent;cursor:not-allowed}

/* cards & lists */
.card{background:var(--white);border:1px solid var(--rule);border-radius:var(--r);padding:14px 16px;box-shadow:var(--lift)}
.card+.card,.section+.section{margin-top:12px}
.card-head{display:flex;justify-content:space-between;align-items:baseline;gap:.75rem;margin-bottom:.5rem}
.card-head h3{font-size:1rem}
.row{display:flex;justify-content:space-between;align-items:center;gap:.75rem;padding:.65rem 0;border-top:1px solid var(--wash)}
.row:first-of-type{border-top:0}
.row .l{min-width:0;flex:1}.row .l b{display:block;color:var(--ink);font-weight:600}.row .l small{display:block;font-size:.82rem}
.row .r{display:flex;align-items:center;gap:.5rem;flex:none}
@media (max-width:600px){.row{flex-wrap:wrap}.row .l{flex:1 1 60%}.row .r{margin-left:auto}}
.section-title{display:flex;align-items:baseline;justify-content:space-between;margin:20px 0 8px}
.section-title h2{font-size:1.15rem}
.section-title a{font-size:.85rem;color:var(--navy);font-weight:500}

/* status vocabulary — the ONLY fee/attendance states, same words everywhere */
.status{display:inline-flex;align-items:center;gap:.35rem;padding:.15rem .55rem;border-radius:3px;font-size:.74rem;font-weight:600;white-space:nowrap}
.status::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.s-due{background:var(--amber-wash);color:var(--amber)}
.s-overdue{background:var(--red-wash);color:var(--red)}
.s-reported{background:var(--navy-wash);color:var(--navy)}
.s-paid{background:var(--green-wash);color:var(--green)}
.s-pass{background:var(--wash);color:var(--text)}
.s-pending{background:var(--wash);color:var(--muted)}
.s-live{background:var(--teal-wash);color:var(--teal)}
.s-live::before{animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.25}}

/* forms */
label{display:block;font-size:.85rem;font-weight:600;color:var(--ink);margin:.75rem 0 .3rem}
input,select,textarea{width:100%;min-height:var(--tap);padding:.6rem .75rem;border:1px solid var(--rule-strong);border-radius:var(--r);background:var(--white);font:inherit;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--navy);outline-offset:0;border-color:var(--navy)}
.help{font-size:.8rem;color:var(--muted);margin-top:.3rem}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{min-height:36px;padding:.35rem .7rem;border:1px solid var(--rule-strong);border-radius:3px;font-size:.85rem;font-weight:500;background:var(--white)}
.chip[aria-pressed="true"]{border-color:var(--navy);background:var(--navy-wash);color:var(--navy)}
.stepper{display:flex;gap:6px;margin-bottom:14px}
.stepper i{flex:1;height:3px;background:var(--wash);border-radius:2px}
.stepper i.on{background:var(--navy)}

/* toast + sheet: replace every alert()/confirm()/prompt() */
.toast{position:fixed;left:16px;right:16px;bottom:calc(72px + env(safe-area-inset-bottom));z-index:60;background:var(--ink);color:#fff;padding:.75rem 1rem;border-radius:var(--r);font-size:.9rem;font-weight:500;display:flex;gap:.75rem;align-items:center;box-shadow:0 12px 30px -12px rgba(0,0,0,.4);animation:up .25s both}
.toast.ok{border-left:4px solid #4ade80}.toast.err{border-left:4px solid #f87171}
.toast button{margin-left:auto;color:#93c5fd;font-weight:600}
@media (min-width:900px){.toast{left:auto;right:24px;bottom:24px;width:380px}}
@keyframes up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.sheet-bg{position:fixed;inset:0;background:rgba(17,24,39,.45);z-index:50;display:flex;align-items:flex-end;justify-content:center}
.sheet{background:var(--white);width:min(520px,100%);border-radius:16px 16px 0 0;padding:20px 20px max(20px,env(safe-area-inset-bottom));animation:up .25s both}
.sheet h2{margin-bottom:.4rem}.sheet p{margin-bottom:1rem}
.sheet .actions{display:flex;gap:.5rem}.sheet .actions .btn{flex:1}
@media (min-width:900px){.sheet-bg{align-items:center}.sheet{border-radius:12px}}
.hidden{display:none!important}

/* notice: one calm line, not a warning banner */
.notice{font-size:.85rem;color:var(--muted);padding:.75rem 0;border-top:1px solid var(--rule)}
.notice a{color:var(--navy);font-weight:500}

/* Claude App Layout Components */
.today{display:grid;gap:8px}
.today .row{border:0;padding:.5rem 0}
.att{display:grid;gap:10px}
.att .card{border-left:3px solid var(--navy)}
.batch{display:grid;gap:8px}
.batch .acts{display:flex;gap:6px;flex-wrap:wrap;margin-top:.5rem}
.monthnav{display:flex;align-items:center;justify-content:space-between;margin:4px 0 12px}
.monthnav b{font-family:var(--serif);font-size:1.15rem;font-weight:500;color:var(--ink)}
.monthnav button{min-width:var(--tap);min-height:var(--tap)}
.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.summary .card{padding:10px 12px}
.summary b{display:block;font-family:var(--serif);font-size:1.3rem;font-weight:500;color:var(--ink)}
.summary small{font-size:.75rem}
.more a.row{padding:.85rem 0}
.cls{margin-top:12px}
.cls .head{display:flex;justify-content:space-between;align-items:flex-start;gap:.75rem}
.cls .head small{display:block;margin-top:.15rem}
.cls .main{margin:.85rem 0}
.cls .main .btn{width:100%}
.next{font-size:.85rem;color:var(--muted);margin-top:.4rem;text-align:center}
.join{display:flex;gap:8px;margin-top:12px}
.join input{flex:1}