/* ============================================================================
   Application 3 — Étude de cas : compléments de style (s'appuie sur ../styles.css)
   ========================================================================== */

/* ------------------------------------------------------- données de référence */
.fact {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.fact-label { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-2); font-weight: 700; }
.fact-value { font-size: 1.7rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.fact-value.is-warn { color: var(--bad); }

.mini-title {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--eyebrow);
  font-weight: 700;
  margin: 18px 0 8px;
}

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--white); }
.data-table { width: 100%; border-collapse: collapse; font-size: .86rem; }
.data-table th, .data-table td { text-align: left; padding: 8px 11px; border-bottom: 1px solid var(--line); }
.data-table th { font-size: .68rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted-2); }
.data-table tr:last-child td { border-bottom: 0; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.data-table .is-warn { color: var(--bad); font-weight: 700; }

/* ------------------------------------------------------------- formules */
.formula-list { display: grid; gap: 10px; margin-top: 12px; }
.formula-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold-graphic);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 11px 13px;
}
.formula-label { font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted-2); font-weight: 700; }
.formula-expr {
  font-family: var(--mono);
  font-size: .9rem;
  background: var(--paper-2);
  border-radius: 8px;
  padding: 7px 10px;
  margin: 6px 0 4px;
  display: inline-block;
}
.formula-note { font-size: .82rem; color: var(--muted); }

/* ------------------------------------------------------------- exercice */
.num-grid { display: grid; gap: 12px; margin: 4px 0 14px; }
.num-field {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 13px;
  background: #fcfbf8;
}
.num-field.is-correct { border-color: var(--ok); background: var(--ok-bg); }
.num-field.is-wrong { border-color: var(--bad); background: var(--bad-bg); }
.num-field label { display: block; font-size: .86rem; font-weight: 650; margin-bottom: 8px; }
.num-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.num-row .input {
  max-width: 200px;
  font-size: 1.15rem;
  font-weight: 700;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.num-unit { font-weight: 650; color: var(--muted); }
.num-verdict { margin-top: 8px; font-size: .84rem; font-weight: 650; color: var(--muted); }
.num-field.is-correct .num-verdict { color: var(--ok); }
.num-field.is-wrong .num-verdict { color: var(--bad); }

.scratch { margin: 14px 0 0; }
.scratch label { display: block; font-size: .78rem; font-weight: 650; color: var(--muted-2); margin-bottom: 6px; }
.scratch textarea {
  width: 100%;
  font-family: var(--mono);
  font-size: .88rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--white);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  resize: vertical;
}
.scratch textarea:focus { outline: 3px solid rgba(255, 209, 73, .85); outline-offset: 1px; }

.correction-title {
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted-2);
  margin: 0 0 6px;
}
.explain.is-partial { background: var(--warn-bg); border-left-color: var(--warn); }
.explain.is-partial h4 { color: var(--warn); }
.explain .steps { font-family: var(--mono); font-size: .88rem; }
.explain .formula-expr { margin-top: 8px; }

.item-note {
  font-size: .82rem;
  color: var(--muted);
  margin-top: 7px;
  padding-left: 2px;
}
.item-note.is-wrong { color: var(--bad); font-weight: 600; }

/* ------------------------------------------------------------- session */
.session-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.session-meta { font-size: .86rem; color: var(--muted); }
.session-side { margin-left: auto; }
.deck-chip {
  background: var(--warn-bg);
  color: #8a5209;
  border: 1px solid #e8c98a;
  border-radius: 999px;
  padding: 3px 10px;
  font-weight: 700;
  font-size: .76rem;
}
#formula-panel summary {
  cursor: pointer;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--eyebrow);
}

@media (max-width: 720px) {
  .fact-value { font-size: 1.4rem; }
  .num-row .input { max-width: 100%; }
  .num-row { gap: 8px; }
  .num-row .input { flex: 1 1 140px; }
}