/* Classrooms directory and detail view styles.
   All values reference design tokens from variables.css. */

/* ── Container reset (overrides layout.css 2-col grid) ── */
.classrooms-directory-view .container {
    display: block;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 0 48px;
}
.classrooms-directory-view .toggle-row { margin-top: -6px; }

/* ── Page header ─────────────────────────────────────── */
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.page-title { font-size: 32px; font-weight: 800; color: var(--fg-primary); letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 6px; }
.page-subtitle { font-size: var(--text-body); color: var(--fg-secondary); line-height: var(--leading-normal); max-width: 560px; }
.btn-add { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: var(--radius-md); background: var(--color-primary-700); color: var(--fg-on-primary); border: 1px solid var(--color-primary-700); font-size: var(--text-sm); font-weight: 600; box-shadow: var(--shadow-primary); cursor: pointer; transition: var(--transition-base); white-space: nowrap; }
.btn-add:hover { background: var(--color-primary-800); border-color: var(--color-primary-800); }
.btn-add svg { width: 16px; height: 16px; }

/* ── Stats row ───────────────────────────────────────── */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); padding: 22px 24px; display: flex; flex-direction: column; gap: 12px; }
.stat-label { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-tertiary); }
.stat-value { font-size: 36px; font-weight: 800; letter-spacing: -0.02em; color: var(--fg-primary); line-height: 1; margin: 0;}
.stat-meta { font-size: var(--text-xs); color: var(--fg-tertiary); display: inline-flex; align-items: center; gap: 6px; }
.stat-meta .delta { color: var(--color-success); font-weight: 600; }

/* subject breakdown stat */
.subj-bars { display: flex; flex-direction: column; gap: 6px; margin-top: 2px; }
.subj-bar-row { display: grid; grid-template-columns: 70px 1fr 22px; align-items: center; gap: 8px; font-size: 11px; }
.subj-bar-label { color: var(--fg-secondary); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.subj-bar-track { height: 6px; background: var(--color-neutral-100); border-radius: var(--radius-full); overflow: hidden; }
.subj-bar-fill { height: 100%; border-radius: var(--radius-full); }
.subj-bar-count { font-size: 11px; color: var(--fg-tertiary); text-align: right; font-variant-numeric: tabular-nums; }

/* ── Filter bar ──────────────────────────────────────── */
.filter-bar { display: flex; gap: 10px; margin-bottom: 22px; align-items: center; flex-wrap: wrap; }
.search-wrap { position: relative; flex: 1 1 240px; min-width: 220px; }
.search-wrap.smaller { flex: 1 1 200px; min-width: 200px; }
.search-input { width: 100%; height: 40px; padding: 0 36px 0 36px; font-family: var(--font-sans); font-size: var(--text-sm); color: var(--fg-primary); background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-md); outline: none; transition: var(--transition-base); }
.search-input:focus { border-color: var(--border-focus); box-shadow: var(--shadow-focus); }
.search-input::placeholder { color: var(--fg-tertiary); }
.search-icon { position: absolute; top: 50%; left: 12px; transform: translateY(-50%); width: 14px; height: 14px; color: var(--color-neutral-400); pointer-events: none; }

.select-wrap { position: relative; }
.select { height: 40px; appearance: none; -webkit-appearance: none; padding: 0 32px 0 12px; font-family: var(--font-sans); font-size: var(--text-sm); font-weight: 500; color: var(--fg-primary); background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-md); cursor: pointer; outline: none; transition: var(--transition-base); min-width: 140px; }
.select:hover { border-color: var(--border-strong); }
.select:focus { border-color: var(--border-focus); box-shadow: var(--shadow-focus); }
.select-caret { position: absolute; top: 50%; right: 10px; transform: translateY(-50%); width: 12px; height: 12px; color: var(--color-neutral-400); pointer-events: none; }

/* Toggle */
.toggle-wrap { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 14px; border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--bg-surface); cursor: pointer; user-select: none; }
.toggle-wrap:hover { border-color: var(--border-strong); }
.toggle-label { font-size: var(--text-sm); font-weight: 500; color: var(--fg-primary); }
.toggle-switch { width: 28px; height: 16px; border-radius: var(--radius-full); background: var(--color-neutral-300); position: relative; transition: var(--transition-base); flex-shrink: 0; }
.toggle-switch.on { background: var(--color-primary-700); }
.toggle-switch::after { content: ''; position: absolute; top: 2px; left: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--color-white); transition: var(--transition-base); box-shadow: var(--shadow-xs); }
.toggle-switch.on::after { left: 14px; }

.admin-marker {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0 6px; height: 14px;
  background: var(--color-primary-light); color: var(--color-primary-700);
  border-radius: 3px; font-size: 9px; font-weight: 700;
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  margin-left: 6px;
}

/* ── Classroom card grid ─────────────────────────────── */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 1180px) { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px)  { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .grid { grid-template-columns: 1fr; } }

.ccard {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 18px 20px 16px;
  display: flex; flex-direction: column;
  transition: var(--transition-base);
  position: relative;
  min-height: 260px;
}
.ccard:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); border-color: var(--border-strong); }
.ccard.archived { background: var(--color-neutral-50); }
.ccard.archived .ccard-name, .ccard.archived .ccard-tutor { color: var(--fg-secondary); }

.ccard-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 4px; }
.ccard-status {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 600; color: var(--color-success);
}
.ccard-status .pulse { width: 6px; height: 6px; border-radius: 50%; background: var(--color-success); box-shadow: 0 0 0 3px rgba(22,163,74,.15); }
.ccard-status.archived { color: var(--fg-tertiary); }
.ccard-status.archived .pulse { background: var(--color-neutral-400); box-shadow: none; }

.ccard-id { font-size: 10px; font-weight: 600; color: var(--fg-tertiary); letter-spacing: var(--tracking-wider); text-transform: uppercase; font-family: var(--font-mono); }

.ccard-name { font-size: 17px; font-weight: 700; color: var(--fg-primary); letter-spacing: -0.01em; line-height: 1.2; margin-bottom: 8px; }

.subject-badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px;
  font-size: 11px; font-weight: 600;
  border-radius: var(--radius-sm);
  letter-spacing: 0;
  line-height: 1.4;
  margin-bottom: 14px;
  align-self: flex-start;
}

.ccard-badge-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: 14px;
}
.ccard-badge-row .subject-badge { margin-bottom: 0; }

.ccard-location-badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--primary) 5%, transparent);
  color: var(--primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: -0.03em;
  text-transform: uppercase;
  padding: 2px var(--space-2);
}

.ccard-tutor-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.tutor-avatar {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--color-neutral-200);
  color: var(--color-white);
  font-size: 10px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ccard-tutor-label { font-size: 10px; font-weight: 600; color: var(--fg-tertiary); letter-spacing: var(--tracking-wider); text-transform: uppercase; line-height: 1; }
.ccard-tutor { font-size: 13px; font-weight: 500; color: var(--fg-primary); line-height: 1.2; margin-top: 2px; }

.ccard-roster {
  font-size: var(--text-xs); color: var(--fg-secondary);
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 6px;
  line-height: 1.4;
}
.ccard-roster-icon { color: var(--fg-tertiary); flex-shrink: 0; }
.ccard-roster-empty { color: var(--fg-tertiary); font-style: italic; }
.ccard-roster .more { color: var(--fg-tertiary); }

.ccard-cta {
  margin-top: auto;
  width: 100%; height: 36px;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--bg-surface); color: var(--fg-primary);
  border: 1px solid var(--border-default); border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 600;
  cursor: pointer; transition: var(--transition-base);
}
.ccard-cta:hover { background: var(--color-primary-light); color: var(--color-primary-700); border-color: var(--color-primary-200); }
.ccard-cta svg { width: 12px; height: 12px; }

/* ── Pagination ──────────────────────────────────────── */
.results-row { display: flex; align-items: center; justify-content: space-between; margin-top: 28px; gap: 16px; flex-wrap: wrap; }
.results-summary { font-size: var(--text-sm); color: var(--fg-secondary); }
.results-summary b { color: var(--fg-primary); font-weight: 600; }
.pagination { display: inline-flex; align-items: center; gap: 4px; }
.page-btn {
  min-width: 32px; height: 32px; padding: 0 8px;
  border: 1px solid var(--border-default);
  background: var(--bg-surface); color: var(--fg-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm); font-weight: 500; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: var(--transition-fast);
}
.page-btn:hover:not(:disabled) { background: var(--color-neutral-100); border-color: var(--border-strong); }
.page-btn:disabled { opacity: .35; cursor: not-allowed; }
.page-btn.current { background: var(--color-primary-700); color: var(--fg-on-primary); border-color: var(--color-primary-700); }
.page-btn.current:hover { background: var(--color-primary-800); }
.page-btn svg { width: 12px; height: 12px; }
.page-ellipsis { color: var(--fg-tertiary); padding: 0 4px; font-size: var(--text-sm); }

/* Empty state */
.empty-state {
  background: var(--bg-surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 56px 32px;
  text-align: center;
}

/* ── Detail view ─────────────────────────────────────── */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: var(--text-sm); color: var(--fg-tertiary); margin-bottom: 20px; }
.breadcrumb-link { color: var(--fg-secondary); cursor: pointer; font-weight: 500; display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px 4px 6px; border-radius: var(--radius-sm); transition: var(--transition-fast); margin-left: -8px; background: transparent; border: none; }
.breadcrumb-link:hover { background: var(--color-neutral-100); color: var(--fg-primary); }
.breadcrumb-link svg { width: 12px; height: 12px; }
.breadcrumb-sep { color: var(--color-neutral-300); }
.breadcrumb-current { color: var(--fg-primary); font-weight: 500; }

.detail-header {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 28px;
  margin-bottom: 20px;
  display: flex; gap: 28px; align-items: flex-start;
  flex-wrap: wrap;
}
.detail-header-main { flex: 1; min-width: 280px; }
.detail-status-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.detail-name { font-size: 28px; font-weight: 800; color: var(--fg-primary); letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 14px; }
.detail-meta-row { display: flex; flex-wrap: wrap; gap: 20px 28px; }
.detail-meta-item { display: flex; flex-direction: column; gap: 4px; }
.detail-meta-label { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-tertiary); }
.detail-meta-val { font-size: var(--text-sm); font-weight: 500; color: var(--fg-primary); display: inline-flex; align-items: center; gap: 8px; }
.detail-description {
  margin-top: 18px; padding-top: 18px;
  border-top: 1px solid var(--color-neutral-100);
  font-size: var(--text-sm); color: var(--fg-secondary);
  line-height: var(--leading-relaxed);
  max-width: 720px;
}
.detail-header-quickstat {
  flex-shrink: 0;
  display: flex; flex-direction: column; align-items: flex-end; gap: 8px;
  padding-left: 28px;
  border-left: 1px solid var(--color-neutral-100);
  min-width: 140px;
  align-self: stretch;
  justify-content: center;
}
.qstat-label { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-tertiary); }
.qstat-value { font-size: 40px; font-weight: 800; color: var(--fg-primary); letter-spacing: -0.02em; line-height: 1; }
.qstat-sub { font-size: var(--text-xs); color: var(--fg-tertiary); }

/* Admin action strip */
.admin-strip {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 14px 20px;
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.admin-strip-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--text-xs); font-weight: 600;
  color: var(--fg-tertiary);
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  margin-right: 4px;
}
.admin-strip-label .lock { width: 12px; height: 12px; }
.admin-strip-spacer { flex: 1; min-width: 8px; }
.strip-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 34px; padding: 0 14px;
  background: var(--bg-surface); color: var(--fg-primary);
  border: 1px solid var(--border-default); border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 600; cursor: pointer;
  transition: var(--transition-base);
}
.strip-btn:hover { background: var(--color-neutral-100); border-color: var(--border-strong); }
.strip-btn.warning:hover { background: var(--color-warning-light); border-color: var(--color-warning); color: var(--color-warning); }
.strip-btn.danger { color: var(--color-danger); }
.strip-btn.danger:hover { background: var(--color-danger-light); border-color: var(--color-danger); }
.strip-btn svg { width: 12px; height: 12px; }

/* Confirm delete inline */
.confirm-card[hidden] { display: none; }
.confirm-card {
  background: var(--color-danger-light);
  border: 1px solid #fca5a5;
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap;
}
.confirm-icon { width: 32px; height: 32px; border-radius: 50%; background: var(--color-white); color: var(--color-danger); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.confirm-msg { flex: 1; min-width: 240px; }
.confirm-title { font-size: var(--text-sm); font-weight: 700; color: var(--color-danger); margin-bottom: 2px; }
.confirm-detail { font-size: var(--text-xs); color: #7f1d1d; }
.confirm-actions { display: flex; gap: 8px; }
.confirm-btn { padding: 8px 14px; border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 600; cursor: pointer; border: 1px solid transparent; }
.confirm-btn.cancel { background: var(--bg-surface); color: var(--fg-primary); border-color: var(--border-default); }
.confirm-btn.cancel:hover { background: var(--color-neutral-100); }
.confirm-btn.confirm { background: var(--color-danger); color: var(--color-white); border-color: var(--color-danger); }
.confirm-btn.confirm:hover { background: var(--color-danger-dark, #b91c1c); }

/* Roster panel */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--color-neutral-100);
  gap: 12px;
}
.panel-title { font-size: 16px; font-weight: 700; color: var(--fg-primary); letter-spacing: var(--tracking-normal); display: inline-flex; align-items: center; gap: 10px; }
.panel-count {
  display: inline-flex; align-items: center;
  padding: 2px 8px; font-size: 11px; font-weight: 600;
  color: var(--color-primary-700); background: var(--color-primary-light);
  border-radius: var(--radius-full);
}
.panel-actions { display: flex; gap: 8px; }

/* Roster add control */
.roster-add-wrap { position: relative; }
.roster-add-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 32px; padding: 0 12px;
  background: var(--color-primary-700); color: var(--fg-on-primary);
  border: 1px solid var(--color-primary-700); border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 600; cursor: pointer;
  transition: var(--transition-base);
}
.roster-add-btn:hover { background: var(--color-primary-800); }
.roster-add-btn svg { width: 12px; height: 12px; }

/* Roster table */
.roster { display: flex; flex-direction: column; }
.roster-row {
  display: grid;
  grid-template-columns: 36px 1fr 130px 1fr 36px;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--color-neutral-100);
  transition: var(--transition-fast);
}
.roster-row:last-child { border-bottom: none; }
.roster-row:hover { background: var(--color-neutral-50); }
.roster-header {
  background: var(--color-neutral-50);
  padding: 8px 22px;
  border-bottom: 1px solid var(--color-neutral-100);
}
.roster-header .roster-h {
  font-size: var(--text-micro); font-weight: 600;
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--fg-tertiary);
}

.roster-avatar {
  width: 32px; height: 32px; border-radius: var(--radius-md);
  color: var(--fg-on-primary); font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; letter-spacing: -0.02em;
}
.av-blue   { background: linear-gradient(135deg, #2563eb, #1a4fcf); }
.av-emerald{ background: linear-gradient(135deg, #10b981, #059669); }
.av-amber  { background: linear-gradient(135deg, #f59e0b, #d97706); }
.av-purple { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.av-pink   { background: linear-gradient(135deg, #ec4899, #be185d); }
.av-rose   { background: linear-gradient(135deg, #f43f5e, #be123c); }
.av-slate  { background: linear-gradient(135deg, #64748b, #334155); }
.av-teal   { background: linear-gradient(135deg, #14b8a6, #0f766e); }

.roster-name { font-size: var(--text-sm); font-weight: 600; color: var(--fg-primary); line-height: 1.2; }
.roster-id   { font-size: 11px; color: var(--fg-tertiary); font-family: var(--font-mono); margin-top: 2px; }
.roster-grade {
  display: inline-flex; align-items: center;
  padding: 3px 8px; font-size: 11px; font-weight: 600;
  background: var(--color-neutral-100); color: var(--fg-secondary);
  border-radius: var(--radius-sm);
}
.roster-subjects { display: flex; flex-wrap: wrap; gap: 4px; }
.roster-subj-pill {
  padding: 2px 7px; font-size: 11px; font-weight: 500;
  border-radius: var(--radius-sm);
  line-height: 1.4;
}
.roster-row:hover .roster-remove { opacity: 1; }

/* Empty roster state */
.empty-roster { padding: 56px 32px; text-align: center; }
.empty-roster-icon { width: 56px; height: 56px; border-radius: var(--radius-full); background: var(--color-primary-light); color: var(--color-primary-700); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.empty-roster-title { font-size: 16px; font-weight: 700; color: var(--fg-primary); margin-bottom: 6px; }
.empty-roster-msg { font-size: var(--text-sm); color: var(--fg-secondary); max-width: 380px; margin: 0 auto 18px; line-height: var(--leading-relaxed); }

/* Inline edit form */
.edit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; margin-bottom: 18px; }
.edit-field { display: flex; flex-direction: column; gap: 6px; }
.edit-field.full { grid-column: 1 / -1; }
.edit-label { font-size: var(--text-micro); font-weight: 600; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--fg-tertiary); }
.edit-input, .edit-textarea, .edit-select {
  height: 38px; padding: 0 12px;
  font-family: var(--font-sans); font-size: var(--text-sm); color: var(--fg-primary);
  background: var(--bg-surface); border: 1px solid var(--border-default);
  border-radius: var(--radius-md); outline: none; transition: var(--transition-base);
}
.edit-textarea { height: auto; min-height: 76px; padding: 10px 12px; resize: vertical; line-height: var(--leading-relaxed); }
.edit-input:focus, .edit-textarea:focus, .edit-select:focus { border-color: var(--border-focus); box-shadow: var(--shadow-focus); }
.edit-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ── Edit metadata modal ─────────────────────────────── */
.cls-edit-meta-overlay[aria-hidden="true"] { display: none; }

.cls-edit-meta-title-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cls-edit-meta-body {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.cls-edit-meta-body .edit-grid { margin-bottom: 0; }
.cls-edit-meta-body .edit-select:disabled { background: var(--color-neutral-50); color: var(--fg-tertiary); cursor: not-allowed; opacity: 1; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--color-neutral-900); color: var(--color-white);
  padding: 10px 18px; border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: inline-flex; align-items: center; gap: 10px;
  z-index: 1000;
  animation: toastIn .2s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 8px); } to { opacity: 1; transform: translate(-50%, 0); } }
.toast svg { width: 14px; height: 14px; color: var(--color-success); }