/* ============================================================
 * Teacher dashboard — styles
 * Builds on ../styles.css design tokens.
 * ============================================================ */

.teacher-id { display: flex; align-items: center; gap: 0.8rem; }
.teacher-id .mono { font-size: 0.8rem; color: var(--text-dim); }

.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.82rem; }

/* ---------- login ---------- */
.login-view { padding: 4rem 0; display: flex; justify-content: center; }
.login-panel { width: min(100%, 460px); }
.login-panel h1 { margin: 0 0 0.6rem; font-size: 1.5rem; letter-spacing: -0.02em; }
.login-form { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.4rem; }
.login-form > .btn { align-self: flex-start; }

/* ---------- dashboard shell ---------- */
.dash { padding: 2.5rem 0 4rem; display: flex; flex-direction: column; gap: 1.4rem; }

.dash-head {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  justify-content: space-between;
}
.dash-head h1 { margin: 0 0 0.25rem; font-size: clamp(1.5rem, 3.5vw, 2rem); letter-spacing: -0.03em; }
.dash-head .muted { margin: 0; font-size: 0.9rem; }

.filters { display: flex; gap: 0.8rem; }
.filter { display: flex; flex-direction: column; gap: 0.3rem; }
.filter span {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}
.filter select {
  font: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.45rem 0.7rem;
  min-width: 7rem;
}
.filter select:focus { outline: none; border-color: var(--accent); }

/* ---------- KPI strip ---------- */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.9rem;
}
.kpi {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1rem 1.1rem;
}
.kpi h3 {
  margin: 0 0 0.3rem;
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}
.kpi .value { font-family: var(--mono); font-size: 1.75rem; line-height: 1.1; }
.kpi[data-tone="ok"]   .value { color: var(--ok); }
.kpi[data-tone="warn"] .value { color: var(--warn); }
.kpi[data-tone="bad"]  .value { color: var(--err); }
.kpi .note { font-size: 0.74rem; color: var(--text-dim); margin-top: 0.25rem; }

/* ---------- cards ---------- */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.4rem;
}
.card h2 { margin: 0 0 0.3rem; font-size: 1.1rem; letter-spacing: -0.015em; }
.card-sub { margin: 0 0 1.2rem; font-size: 0.86rem; }
.card-sub em { color: var(--warn); font-style: normal; }

.empty { margin: 0.5rem 0 0; font-size: 0.88rem; color: var(--text-dim); }

/* ---------- topic mastery block ---------- */
.topic-block { margin-bottom: 1.6rem; }
.topic-block:last-child { margin-bottom: 0; }

.topic-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}
.topic-head h3 { margin: 0; font-size: 0.98rem; }
.topic-head .counts { font-family: var(--mono); font-size: 0.76rem; color: var(--text-dim); }

.dist-bar {
  display: flex;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
}
.dist-seg { transition: width 0.3s ease; }
.dist-seg[data-level="mastered"]    { background: var(--ok); }
.dist-seg[data-level="proficient"]  { background: var(--accent); }
.dist-seg[data-level="developing"]  { background: var(--warn); }
.dist-seg[data-level="beginning"]   { background: var(--err); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin-top: 0.55rem;
  font-size: 0.74rem;
  color: var(--text-dim);
}
.legend i {
  display: inline-block;
  width: 9px; height: 9px;
  border-radius: 3px;
  margin-right: 0.35rem;
}
.legend i[data-level="mastered"]   { background: var(--ok); }
.legend i[data-level="proficient"] { background: var(--accent); }
.legend i[data-level="developing"] { background: var(--warn); }
.legend i[data-level="beginning"]  { background: var(--err); }

.dims {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.6rem;
  margin-top: 1rem;
}
.dim {
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg-elev-2);
  padding: 0.6rem 0.7rem;
}
.dim h4 {
  margin: 0 0 0.25rem;
  font-size: 0.66rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}
.dim .v { font-family: var(--mono); font-size: 1.05rem; }
.dim[data-tone="bad"] .v  { color: var(--err); }
.dim[data-tone="warn"] .v { color: var(--warn); }
.dim[data-tone="ok"] .v   { color: var(--ok); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}
.data-table th {
  text-align: left;
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  padding: 0 0.7rem 0.6rem 0;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 0.6rem 0.7rem 0.6rem 0;
  border-bottom: 1px solid rgba(35, 44, 64, 0.5);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .num { text-align: right; font-family: var(--mono); }
.data-table .mono { font-family: var(--mono); font-size: 0.82rem; }

.pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  white-space: nowrap;
}
.pill[data-level="mastered"]   { color: var(--ok);    border-color: rgba(52,211,153,0.4); }
.pill[data-level="proficient"] { color: var(--accent); border-color: rgba(94,234,212,0.4); }
.pill[data-level="developing"] { color: var(--warn);  border-color: rgba(251,191,36,0.4); }
.pill[data-level="beginning"]  { color: var(--err);   border-color: rgba(248,113,113,0.4); }

.pill-warn { color: var(--warn); border-color: rgba(251,191,36,0.4); }
.pill-ok   { color: var(--ok);   border-color: rgba(52,211,153,0.4); }

/* ---------- recommendation ---------- */
#recommend-body { display: flex; flex-direction: column; gap: 0.8rem; }
.rec {
  border-left: 2px solid var(--accent);
  background: rgba(94, 234, 212, 0.05);
  border-radius: 0 9px 9px 0;
  padding: 0.85rem 1rem;
}
.rec[data-tone="warn"] { border-left-color: var(--warn); background: rgba(251,191,36,0.06); }
.rec[data-tone="bad"]  { border-left-color: var(--err);  background: rgba(248,113,113,0.06); }
.rec h3 { margin: 0 0 0.3rem; font-size: 0.92rem; }
.rec p { margin: 0; font-size: 0.87rem; color: var(--text-dim); }
.rec strong { color: var(--text); }

@media (max-width: 640px) {
  .dash-head { flex-direction: column; align-items: stretch; }
  .filters { flex-wrap: wrap; }
}