/* inst_admin.css — styling for the Institution ADMIN surfaces (Overview,
 * Teachers, Classrooms, Branding). Ported from the handoff's `.iw-*`/`.stat`/
 * `.roster`/`.swatch`/`.brand-prev` vocabulary onto appshell.css design tokens.
 *
 * Everything is namespaced `ia-` and scoped under the admin surface panels so
 * this slice never collides with the other parallel P1 surfaces (teacher /
 * student) that also port the handoff. Buttons reuse the global .btn / .btn-ghost
 * / .btn-accent / .btn-sm from style.css; only admin-specific components live
 * here. Colors come exclusively from CSS custom properties so both themes work. */

/* Admin tabs stay hidden until inst_admin.js detects an org-admin active
 * context and removes the class (mirrors .teacher-gated / .owner-gated). This
 * rule was missing since the tabs shipped, so every /app user — including the
 * owner's personal context — saw all twelve admin tabs. */
.tab.admin-gated,
.drawer-tab.admin-gated { display: none !important; }

/* ---- surface shell ------------------------------------------------------- */
#surface-inst-overview .ia-wrap,
#surface-inst-teachers .ia-wrap,
#surface-inst-classrooms .ia-wrap,
#surface-inst-branding .ia-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--sp-5, 28px) var(--sp-5, 28px) 64px;
}
#surface-inst-branding .ia-wrap { max-width: 880px; }

.ia-eyebrow {
  font: 600 11px 'JetBrains Mono', monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-bottom: 6px;
}

.ia-h1 {
  font: 500 clamp(1.7rem, 1.2rem + 1.4vw, 2.2rem) 'Newsreader', Georgia, serif;
  color: var(--ink);
  margin: 0;
  line-height: 1.1;
}
.ia-h2 { font: 500 1.15rem 'Newsreader', Georgia, serif; color: var(--ink); margin: 0; }

.ia-sub {
  font: 400 14.5px/1.55 'Inter', sans-serif;
  color: var(--ink-muted);
  margin: 8px 0 0;
  max-width: 62ch;
}
.ia-sub-sm { font-size: 12.5px; margin-top: 10px; }

.ia-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin: 14px 0 22px;
}
.ia-head-sub { align-items: center; margin: 26px 0 14px; }

/* ---- cards / tags / chips ------------------------------------------------- */
.ia-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-1);
}

.ia-chip {
  display: inline-flex;
  align-items: center;
  font: 600 11.5px 'JetBrains Mono', monospace;
  letter-spacing: .04em;
  color: var(--ink-muted);
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 5px 12px;
}

.ia-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 600 11px 'Inter', sans-serif;
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
}
.ia-tag-active {
  color: var(--em);
  background: color-mix(in oklch, var(--em) 12%, transparent);
}
.ia-tag-invited {
  color: var(--slate);
  background: color-mix(in oklch, var(--slate) 16%, transparent);
}

/* ---- stats — editorial statline (2026-07-02 refinement) -------------------
 * Matches the /teach statline: big Newsreader numerals on a hairline band with
 * dividers, instead of a grid of identical grey tiles. Hierarchy over boxes. */
.ia-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 4px 0 28px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.ia-stat {
  flex: 1 1 150px;
  background: none;
  border: none;
  border-radius: 0;
  padding: 18px 22px 15px 0;
  box-shadow: none;
}
.ia-stat + .ia-stat { border-left: 1px solid var(--border); padding-left: 22px; }
.ia-stat-num {
  font: 500 2.1rem/1 'Newsreader', Georgia, serif;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.ia-stat-of { font-size: .9rem; color: var(--ink-subtle); }
.ia-stat-label {
  font: 600 10px 'JetBrains Mono', monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-top: 9px;
}
.ia-stat-foot {
  font: 400 11.5px 'Inter', sans-serif;
  color: var(--ink-subtle);
  margin-top: 4px;
}

/* ---- roster table -------------------------------------------------------- */
.ia-roster { overflow: hidden; }
.ia-row {
  display: grid;
  grid-template-columns: 2.2fr 1.2fr .9fr .9fr .9fr;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}
.ia-row:first-child { border-top: none; }
.ia-row-head {
  font: 600 11px 'Inter', sans-serif;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  background: var(--surface-raised);
}
.ia-cell { font: 400 13.5px 'Inter', sans-serif; color: var(--ink-muted); }

.ia-name { display: flex; align-items: center; gap: 12px; min-width: 0; }
.ia-name > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.ia-name-main {
  font: 500 14px 'Inter', sans-serif;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ia-name-sub {
  font: 500 11px 'JetBrains Mono', monospace;
  color: var(--ink-subtle);
  margin-top: 2px;
}
.ia-avatar {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font: 600 11px 'Inter', sans-serif;
  color: var(--bg);
  background: linear-gradient(150deg, var(--accent), var(--em));
}

/* ---- classroom cards ----------------------------------------------------- */
.ia-cl-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.ia-cl { padding: 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.ia-cl-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.ia-cl-foot { border-top: 1px solid var(--border); padding-top: 12px; }
.ia-cl-code { font: 600 12px 'JetBrains Mono', monospace; letter-spacing: .06em; color: var(--accent); }
.ia-cl-name { font: 500 15px 'Newsreader', Georgia, serif; color: var(--ink); margin-top: 3px; }

/* ---- empty / note states ------------------------------------------------- */
.ia-empty {
  border: 1px dashed var(--border-strong);
  border-radius: 16px;
  padding: 30px 24px;
  text-align: center;
  font: 400 14px 'Inter', sans-serif;
  color: var(--ink-subtle);
  background: var(--surface);
}
.ia-note { font: 400 12.5px 'Inter', sans-serif; color: var(--ink-muted); margin: 0; }
.ia-note.err { color: var(--accent); }
.ia-section-label {
  font: 600 11px 'Inter', sans-serif;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-bottom: 10px;
}

/* ---- branding ------------------------------------------------------------ */
.ia-brand-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 30px;
  align-items: start;
  margin-top: 24px;
}
.ia-set-row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
}
.ia-brand-controls .ia-set-row:first-child { border-top: none; }
.ia-set-label { font: 500 14px 'Inter', sans-serif; color: var(--ink); }
.ia-set-desc { font: 400 12.5px/1.45 'Inter', sans-serif; color: var(--ink-subtle); }

.ia-logo-box {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font: 600 16px 'Newsreader', Georgia, serif;
  color: #fff;
  background: linear-gradient(150deg, var(--accent), var(--em));
}
.ia-logo-sm { width: 24px; height: 24px; border-radius: 7px; font-size: 12px; }

.ia-swatches { display: inline-flex; gap: 8px; }
.ia-swatch {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  border: 2px solid transparent;
  box-shadow: 0 0 0 1px var(--border) inset;
  cursor: pointer;
  padding: 0;
  position: relative;
  transition: transform .15s var(--ease, ease), border-color .15s ease;
}
.ia-swatch:hover:not([disabled]) { transform: translateY(-2px); }
.ia-swatch.on { border-color: var(--ink); }
.ia-swatch:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
/* A swatch that fails WCAG AA is non-selectable and visibly struck through. */
.ia-swatch-fail {
  cursor: not-allowed;
  opacity: .5;
}
.ia-swatch-fail::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 44%, var(--surface) 46%, var(--surface) 54%, transparent 56%);
  border-radius: 6px;
}

.ia-input {
  font: 400 14px 'Inter', sans-serif;
  color: var(--ink);
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 9px 12px;
  width: 100%;
}
.ia-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.ia-brand-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
  margin-top: 4px;
  border-top: 1px solid var(--border);
}

/* live preview card */
.ia-brand-prev { overflow: hidden; }
.ia-prev-top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.ia-prev-school { font: 500 15px 'Newsreader', Georgia, serif; color: var(--ink); }
.ia-prev-body { padding: 22px 18px; background: var(--bg); }
.ia-prev-eyebrow {
  font: 600 11px 'JetBrains Mono', monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}
.ia-prev-welcome { font: 500 1.3rem 'Newsreader', Georgia, serif; color: var(--ink); margin-top: 8px; }
.ia-prev-bar {
  margin-top: 14px;
  height: 6px;
  border-radius: 99px;
  background: color-mix(in oklch, var(--ink) 8%, transparent);
  overflow: hidden;
}
.ia-prev-bar-fill { display: block; height: 100%; width: 68%; background: var(--accent); }
.ia-prev-cta {
  margin-top: 16px;
  font: 600 13px 'Inter', sans-serif;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 999px;
  padding: 9px 18px;
  cursor: default;
}

/* ---- invite modal -------------------------------------------------------- */
.ia-modal {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 20px;
}
.ia-modal[hidden] { display: none; }
.ia-modal-veil { position: absolute; inset: 0; background: rgba(20, 14, 8, .42); backdrop-filter: blur(2px); }
.ia-modal-card {
  position: relative;
  width: min(460px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-2, 0 12px 40px rgba(40, 28, 18, .22));
  padding: 24px 26px;
}
.ia-modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.ia-modal-title { font: 500 1.25rem 'Newsreader', Georgia, serif; color: var(--ink); margin: 0; }
.ia-modal-x {
  font: 400 16px 'Inter', sans-serif;
  color: var(--ink-subtle);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.ia-modal-x:hover { color: var(--ink); }
.ia-modal-foot { display: flex; align-items: center; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.ia-field { display: flex; flex-direction: column; gap: 6px; margin-top: 14px; }
.ia-field > span { font: 600 12px 'Inter', sans-serif; color: var(--ink-muted); }
.ia-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ---- responsive ---------------------------------------------------------- */
@media (max-width: 720px) {
  .ia-brand-grid { grid-template-columns: 1fr; }
  .ia-row { grid-template-columns: 1.6fr 1fr .8fr; }
  .ia-row > :nth-child(4), .ia-row-head > :nth-child(4) { display: none; }
  .ia-set-row { grid-template-columns: 1fr auto; }
  .ia-set-desc { grid-column: 1 / -1; order: 3; }
  .ia-field-row { grid-template-columns: 1fr; }
}