:root {
  --bg: #f4f5fb; --card: #ffffff; --text: #171a2b; --muted: #5e6477; --line: #e3e5ef;
  --accent: #5b4bdb; --accent-2: #0ea5e9; --accent-text: #ffffff; --accent-soft: #efedfd; --chip: #f0f1f7;
  --ok: #1d7a46; --ok-bg: #e4f5eb; --warn: #8a5a00; --warn-bg: #fdf1d6; --bad: #b3261e; --bad-bg: #fbe8e6;
  --info: #1d5fbf; --info-bg: #e5effd;
  --shadow: 0 1px 2px rgba(23, 26, 60, .05), 0 6px 20px rgba(23, 26, 60, .05);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117; --card: #171a23; --text: #e8eaf2; --muted: #9aa0b4; --line: #262a38;
    --accent: #9d8fff; --accent-2: #38bdf8; --accent-text: #0f1117; --accent-soft: #221f3d; --chip: #20242f;
    --ok: #5cc98a; --ok-bg: #16301f; --warn: #f0c060; --warn-bg: #33290f; --bad: #ff8a80; --bad-bg: #3a1a18;
    --info: #7cb6ff; --info-bg: #152538;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .25);
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
       font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 1520px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 12px; }
p { margin: 0 0 8px; }
a { color: var(--accent); }
.muted, .hint { color: var(--muted); }
.hint { font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow); }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.stack > * + * { margin-top: 12px; }
input[type=text] { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px;
                   background: var(--bg); color: var(--text); font: inherit; }
select { padding: 7px 10px; border: 1px solid var(--line); border-radius: 9px; background: var(--card); color: var(--text); font: inherit; }
input:focus-visible, select:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button, .button { display: inline-block; padding: 9px 16px; border-radius: 9px; border: 1px solid var(--line);
                  background: var(--chip); color: var(--text); font: inherit; cursor: pointer; text-decoration: none;
                  transition: background-color .15s, border-color .15s, filter .15s; }
button:hover:not(:disabled), .button:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
button.primary, .button.primary { background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, var(--accent-2)));
                                  color: var(--accent-text); border-color: transparent; font-weight: 600; }
button.primary:hover:not(:disabled), .button.primary:hover { filter: brightness(1.07); }
button:disabled { opacity: .6; cursor: default; }
.chip { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12.5px; background: var(--chip); white-space: nowrap; }
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.chip.info { background: var(--info-bg); color: var(--info); }
.course-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 8px; vertical-align: 1px; flex: none; }
.course-cell { display: inline-flex; align-items: flex-start; }
.course-cell .course-dot { margin-top: .45em; }
.banner { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; }
.banner.bad { background: var(--bad-bg); color: var(--bad); }
.banner.warn { background: var(--warn-bg); color: var(--warn); }
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.tile { --tone: var(--accent); --tone-bg: var(--accent-soft); position: relative; overflow: hidden;
        background: linear-gradient(145deg, var(--tone-bg), var(--card) 70%); border: 1px solid var(--line);
        border-radius: 14px; padding: 14px 16px 14px 20px; box-shadow: var(--shadow); }
.tile::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--tone); }
.tile b { display: block; font-size: clamp(19px, 4.6vw, 26px); font-variant-numeric: tabular-nums; color: var(--tone);
         margin-top: 2px; overflow-wrap: anywhere; line-height: 1.2; }
.tile.t-missing { --tone: var(--bad); --tone-bg: var(--bad-bg); }
.tile.t-late { --tone: var(--warn); --tone-bg: var(--warn-bg); }
.tile.t-upcoming { --tone: var(--info); --tone-bg: var(--info-bg); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid2 > .card { margin-bottom: 0; }
.grid2 > *, .tiles > * { min-width: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .03em; }
th .th-sort { all: unset; cursor: pointer; white-space: nowrap; }
th .th-sort:hover { color: var(--text); }
th .th-sort:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; border-radius: 3px; }
td.nowrap { white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tbody tr { transition: background-color .12s; }
tbody tr:hover { background: color-mix(in srgb, var(--accent-soft) 60%, transparent); }
.down { color: var(--bad); } .up { color: var(--ok); }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs button[aria-selected=true] { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.empty { color: var(--muted); padding: 8px 0; }
.list { margin: 0; padding: 0; list-style: none; }
.list li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.list li:last-child { border-bottom: none; }
[hidden] { display: none !important; }
@media (max-width: 720px) {
  .tiles { grid-template-columns: 1fr 1fr; }
  .grid2 { grid-template-columns: 1fr; }
}