/* CFI — minimalist, responsive, light + dark. Framework-free. */
:root {
  --bg: #fbfbfd;
  --surface: #ffffff;
  --text: #1a1a1f;
  --muted: #6b7280;
  --border: #e7e7ec;
  --accent: #4f46e5;
  --accent-weak: #eef0fe;
  --danger: #b42318;
  --radius: 12px;
  --gap: 16px;
  --maxw: 820px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e11; --surface: #17171c; --text: #ececf1; --muted: #9a9aa6;
    --border: #26262e; --accent: #8b83ff; --accent-weak: #1c1b2e; --danger: #ff6b5e;
  }
}
* { box-sizing: border-box; }
/* The `hidden` attribute must win over class-based display rules
   (e.g. .login-wrap's display:grid), or views won't toggle. */
[hidden] { display: none !important; }
html, body { margin: 0; }
html {
  /* Stop iOS Safari inflating font sizes on sparse pages (My Schedule looked
     larger than the busier pages). Render text at the CSS-specified size. */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text);
  -webkit-font-smoothing: antialiased;
}
.muted { color: var(--muted); }
.brand { font-weight: 700; letter-spacing: .02em; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 24px 20px 64px; }

/* Login */
.login-wrap { min-height: 100dvh; display: grid; place-items: center; padding: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04);
}
.card h1 { margin: 0; font-size: 28px; }
.card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
input {
  font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
button {
  font: inherit; font-weight: 600; cursor: pointer; border: 0; border-radius: 8px;
  padding: 10px 14px; background: var(--accent); color: #fff;
}
button:disabled { opacity: .6; cursor: default; }
button.ghost { background: transparent; color: var(--muted); padding: 6px 10px; }
button.ghost:hover { color: var(--text); }
.error { color: var(--danger); font-size: 13px; margin: 0; }

/* Top nav */
.topnav {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 16px;
  padding: 12px 20px; background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px); border-bottom: 1px solid var(--border);
}
.topnav .brand { font-size: 18px; }
.topnav nav { display: flex; gap: 4px; margin-right: auto; flex-wrap: wrap; }
.topnav nav a {
  text-decoration: none; color: var(--muted); padding: 6px 12px; border-radius: 999px; font-weight: 500;
}
.topnav nav a:hover { color: var(--text); }
.topnav nav a.active { color: var(--accent); background: var(--accent-weak); }
/* Sign out is a utility action, not navigation — keep it quiet. */
#signout { font-size: 13px; font-weight: 400; padding: 4px 8px; }

/* Page */
.page-header { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
h2.page-title { font-size: 22px; margin: 8px 0 20px; }
.refresh { display: flex; align-items: center; gap: 10px; }
.refresh .updated { font-size: 13px; white-space: nowrap; }
.refresh .refresh-btn { border: 1px solid var(--border); }
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
select {
  font: inherit; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text);
}

/* Lists */
.list { border-top: 1px solid var(--border); }
.row {
  display: flex; align-items: baseline; gap: 12px; justify-content: space-between;
  padding: 14px 4px; border-bottom: 1px solid var(--border);
}
.row .main { font-weight: 600; }
.row .sub { color: var(--muted); font-size: 13px; margin-top: 2px; }
.row .right { color: var(--muted); font-size: 13px; text-align: right; white-space: nowrap; }
.row .right .total { color: var(--text); font-weight: 600; margin-top: 2px; }
.pill {
  display: inline-block; font-size: 11px; font-weight: 600; padding: 1px 8px; border-radius: 999px;
  background: var(--accent-weak); color: var(--accent); vertical-align: middle;
}
.pill.danger { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }
.main .pill { margin-left: 6px; }                       /* badge beside the student name */
.toolbar .checkbox { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
/* Cancelled lessons: red + struck through, but still visible. */
.row.cancelled .main { color: var(--danger); text-decoration: line-through; }
.row.cancelled .sub { color: var(--danger); opacity: .8; text-decoration: line-through; }
.cancel-detail { color: var(--danger); font-size: 13px; margin-top: 4px; }
.loadmore { display: block; margin: 20px auto 0; background: transparent; color: var(--accent); border: 1px solid var(--border); }
.state { color: var(--muted); padding: 32px 4px; text-align: center; }

@media (max-width: 560px) {
  .row { flex-direction: column; gap: 2px; }
  .row .right { text-align: left; }

  /* Brand + Sign out on the top line; the three nav links on their own full
     line below, evenly spread, so they never wrap apart. */
  .topnav { flex-wrap: wrap; row-gap: 12px; gap: 8px; }
  .topnav .brand { margin-right: auto; }
  #nav { order: 3; flex-basis: 100%; flex-wrap: nowrap; justify-content: space-between; margin-right: 0; gap: 4px; }
  #nav a { padding: 6px 10px; }
}

/* Phase 7 — New schedule students (review panel) */
.review { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 20px; }
.review-head { font-weight: 600; margin-bottom: 8px; }
.review-row { display: block; }
.review-row .picks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.review-row .pick { background: transparent; color: var(--text); border: 1px solid var(--border); font-size: 13px; }
.review-row .pick:hover { border-color: var(--accent); color: var(--accent); }
.note-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; align-items: center; }
.note-input { flex: 1 1 260px; min-width: 200px; padding: 7px 10px; border: 1px solid var(--border);
              border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; }