/* ugmarks — the visual language borrows the mark ledger: ruled rows, tabular figures,
   a marking-ink teal, and vermilion reserved strictly for things needing attention. */

:root {
  --paper: #eef1ee;          /* exercise-book grey-green */
  --card: #fdfdfc;
  --ink: #16211f;            /* deep green-black */
  --ink-soft: #5d6b68;
  --rule: #d3dbd7;
  --rule-strong: #b3bfba;
  --teal: #0e5b54;           /* marking ink */
  --teal-bright: #12857a;
  --teal-wash: #e2ecea;
  --flag: #b03a22;           /* only ever means "look at this" */
  --flag-wash: #f7e8e3;

  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: 60rem; margin: 0 auto; padding: 0 1.5rem; }

/* --- masthead ------------------------------------------------------------- */
.masthead { border-bottom: 2px solid var(--ink); background: var(--card); }
.masthead-inner {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.25rem 1.25rem;
  padding-top: 1.6rem; padding-bottom: 1.4rem;
}
.wordmark {
  margin: 0;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--teal);
}
.masthead-note { margin: 0; color: var(--ink-soft); font-size: 0.94rem; }

/* --- stages --------------------------------------------------------------- */
.stage { padding: 2.5rem 0 0.5rem; }
.stage-head { margin-bottom: 1rem; }
.stage-mark {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--teal-bright);
  margin-bottom: 0.35rem;
}
.stage h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.015em;
}
.lede { max-width: 46rem; color: var(--ink-soft); margin: 0 0 1.5rem; }
.lede code {
  font-family: var(--mono); font-size: 0.85em;
  background: var(--teal-wash); color: var(--teal); padding: 0.1em 0.35em; border-radius: 2px;
}

/* --- dropzone ------------------------------------------------------------- */
.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.4rem;
  min-height: 9rem;
  padding: 1.5rem;
  background: var(--card);
  border: 1.5px dashed var(--rule-strong);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.is-over { border-color: var(--teal-bright); background: var(--teal-wash); }
.dropzone:focus-within { outline: 2px solid var(--teal); outline-offset: 2px; }
.dropzone-cue { font-weight: 550; }
.dropzone-hint { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); }

.filelist { list-style: none; margin: 0.9rem 0 0; padding: 0; }
.filelist li {
  display: flex; justify-content: space-between; gap: 1rem;
  font-family: var(--mono); font-size: 0.82rem;
  padding: 0.45rem 0.1rem; border-bottom: 1px solid var(--rule);
}
.filelist li span:last-child { color: var(--ink-soft); }

/* --- buttons -------------------------------------------------------------- */
.actions { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 0.75rem; margin: 1.5rem 0 0; }
.btn {
  font-family: var(--sans); font-size: 0.95rem; font-weight: 550;
  padding: 0.6rem 1.15rem; border: 1.5px solid var(--ink); border-radius: 2px;
  background: var(--card); color: var(--ink); cursor: pointer;
  transition: background 0.15s, color 0.15s, transform 0.08s;
}
.btn:hover:not(:disabled) { background: var(--teal-wash); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 2px; }
.btn-primary { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--teal-bright); border-color: var(--teal-bright); }
.btn-quiet { border-color: var(--rule-strong); color: var(--ink-soft); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn.is-busy { color: transparent; position: relative; }
.btn.is-busy::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  width: 0.9rem; height: 0.9rem; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4); border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.namefield { display: flex; flex-direction: column; gap: 0.3rem; margin-right: auto; }
.namefield span { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }
.namefield input {
  font-family: var(--mono); font-size: 0.9rem; padding: 0.55rem 0.65rem;
  border: 1.5px solid var(--rule-strong); border-radius: 2px; background: var(--card); color: var(--ink);
  min-width: 14rem;
}
.namefield input:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 1px; border-color: var(--teal); }

.flash {
  margin: 1.25rem 0 0; padding: 0.75rem 1rem;
  background: var(--flag-wash); border-left: 3px solid var(--flag); color: #7d2716;
  font-size: 0.92rem;
}

/* --- tally ---------------------------------------------------------------- */
.tally {
  display: flex; flex-wrap: wrap; gap: 0; margin: 0 0 1.75rem;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--rule);
}
.tally > div { padding: 0.8rem 1.5rem 0.8rem 0; margin-right: 1.5rem; border-right: 1px solid var(--rule); }
.tally > div:last-child { border-right: 0; }
.tally dt {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.11em;
  text-transform: uppercase; color: var(--ink-soft);
}
.tally dd {
  margin: 0.15rem 0 0; font-family: var(--mono); font-size: 1.4rem;
  font-variant-numeric: tabular-nums; color: var(--teal);
}

/* --- panels --------------------------------------------------------------- */
.panel { background: var(--card); border: 1px solid var(--rule); padding: 1.25rem 1.35rem; margin-bottom: 1.25rem; }
.panel-h {
  margin: 0 0 0.3rem; font-family: var(--serif); font-size: 1.15rem; font-weight: 600;
}
.panel-note { margin: 0 0 1rem; color: var(--ink-soft); font-size: 0.88rem; max-width: 46rem; }

/* --- band scale (the grade bands from the template legend) ----------------- */
.bandscale { display: flex; margin-bottom: 1rem; border: 1px solid var(--rule-strong); }
.bandscale div {
  flex: 1; padding: 0.3rem 0.2rem; text-align: center;
  font-family: var(--mono); font-size: 0.68rem; font-weight: 600;
  color: #fff; white-space: nowrap;
}

/* --- class strip: one tile per student ------------------------------------ */
.classstrip { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tile {
  display: flex; flex-direction: column; gap: 0.1rem;
  min-width: 6.4rem; flex: 1 1 6.4rem; max-width: 11rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--rule-strong); border-left-width: 4px;
  background: var(--card); cursor: pointer; text-align: left;
  font: inherit; color: inherit;
  transition: transform 0.1s, box-shadow 0.1s;
}
.tile:hover { transform: translateY(-2px); box-shadow: 0 2px 0 var(--rule-strong); }
.tile:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 2px; }
.tile[aria-pressed="true"] { background: var(--teal-wash); border-color: var(--teal); }
.tile-roll { font-family: var(--mono); font-size: 0.66rem; color: var(--ink-soft); }
.tile-name {
  font-size: 0.82rem; font-weight: 550; line-height: 1.25;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tile-gpa { font-family: var(--mono); font-size: 0.95rem; font-variant-numeric: tabular-nums; }
.tile.is-flagged .tile-roll { color: var(--flag); }

.studentcard { margin-top: 1.1rem; border-top: 1px solid var(--ink); padding-top: 0.9rem; }
.studentcard h4 { margin: 0 0 0.6rem; font-family: var(--serif); font-size: 1.05rem; }

/* --- grids ---------------------------------------------------------------- */
.grid { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.grid th, .grid td { text-align: left; padding: 0.5rem 0.6rem 0.5rem 0; border-bottom: 1px solid var(--rule); }
.grid thead th {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-soft); border-bottom: 1px solid var(--ink); font-weight: 500;
}
.grid .num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.grid td.sheetname { font-family: var(--mono); font-size: 0.82rem; color: var(--teal); }
.grid input[type="text"], .grid select {
  width: 100%; max-width: 22rem; font: inherit; font-size: 0.88rem;
  padding: 0.35rem 0.5rem; border: 1px solid var(--rule-strong); border-radius: 2px;
  background: var(--paper); color: var(--ink);
}
.grid input:focus-visible, .grid select:focus-visible { outline: 2px solid var(--teal-bright); outline-offset: 1px; }
.pill {
  display: inline-block; font-family: var(--mono); font-size: 0.66rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.1rem 0.4rem; border: 1px solid currentColor; color: var(--ink-soft);
}
.pill.is-flag { color: var(--flag); background: var(--flag-wash); }

/* --- warnings ------------------------------------------------------------- */
.warnlist { list-style: none; margin: 0; padding: 0; font-size: 0.89rem; }
.warnlist li { display: flex; gap: 0.65rem; padding: 0.4rem 0; border-bottom: 1px solid var(--rule); }
.warnlist li:last-child { border-bottom: 0; }
.warnlist .lvl {
  flex: none; font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.12rem 0.35rem; height: fit-content;
}
.warnlist .lvl-warn, .warnlist .lvl-error { background: var(--flag-wash); color: var(--flag); }
.warnlist .lvl-info { background: var(--teal-wash); color: var(--teal); }

/* --- choice --------------------------------------------------------------- */
.choice { display: flex; gap: 0.7rem; align-items: flex-start; cursor: pointer; }
.choice input { margin-top: 0.28rem; width: 1rem; height: 1rem; accent-color: var(--teal); flex: none; }
.choice strong { display: block; font-weight: 550; }
.choice em { display: block; font-style: normal; color: var(--ink-soft); font-size: 0.87rem; }

.footer { padding: 2rem 1.5rem 3rem; color: var(--ink-soft); font-size: 0.82rem; }
.footer p { margin: 0; }

@media (max-width: 34rem) {
  .tally > div { padding-right: 1rem; margin-right: 1rem; }
  .namefield { margin-right: 0; width: 100%; }
  .namefield input { width: 100%; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}