/* ─── References overview (references.php) ────────────────────────────────── */

.ref-wrap { max-width: 1400px; margin: 15px auto; padding: 0 15px; }

.ref-tutor { border: 1px solid #ddd; border-radius: 6px; margin-bottom: 10px; background: #fff; overflow: hidden; }
.ref-tutor-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; cursor: pointer; user-select: none; background: #f8f8f8; border-bottom: 1px solid transparent; }
.ref-tutor-head:hover { background: #f0f0f0; }
.ref-tutor-head .name { font-weight: 600; }
.ref-tutor-head .stats { display: flex; align-items: center; gap: 10px; }
.ref-tutor-head .pct { font-size: 0.85em; color: #888; }
.ref-tutor-head .badge { border-radius: 10px; padding: 2px 10px; font-size: 0.85em; font-weight: 600; color: #fff; }

.badge-pending { background: #e74c3c; }
.badge-done { background: #27ae60; }

.ref-tutor-bar { height: 4px; background: #eee; border-radius: 0; }
.ref-tutor-bar-fill { height: 100%; background: #27ae60; }

.ref-tutor.complete .ref-tutor-head { opacity: 0.6; }
.ref-tutor-body { display: none; padding: 0 14px 10px; }
.ref-tutor.open .ref-tutor-body { display: block; }
.ref-tutor.open .ref-tutor-head { border-bottom: 1px solid #eee; }

.ref-subject { margin-top: 8px; }
.ref-subject-title { font-weight: 600; color: #555; font-size: 0.9em; padding: 4px 0; border-bottom: 1px solid #f0f0f0; display: flex; justify-content: space-between; align-items: center; }
.ref-subject-title .sub-stats { font-weight: normal; color: #888; font-size: 0.9em; }

.ref-stu-list { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 6px 0 2px 8px; }
.ref-stu-list a { font-size: 0.9em; }
.ref-stu-list a.done { color: #27ae60; text-decoration: line-through; }

.ref-note { text-align: center; font-size: 0.8rem; color: #6b7280; background: #f8f9fa; border: 1px solid #e5e7eb; border-radius: 6px; padding: 8px 16px; margin: 12px auto 0; max-width: fit-content; }
.ref-note i { color: #3b82f6; margin-right: 4px; }

.ref-toolbar { display: flex; justify-content: center; gap: 8px; margin-bottom: 12px; }
.ref-toolbar button { padding: 4px 12px; border: 1px solid #ccc; border-radius: 4px; background: #fff; cursor: pointer; font-size: 0.85em; }
.ref-toolbar button:hover { background: #f0f0f0; }

/* ─── Reference prep cards (referencePrep.php) ────────────────────────────── */

.ref-card { border: 1px solid #e5e7eb; border-radius: 8px; background: #fff; overflow: hidden; }
.ref-card-head { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid #e5e7eb; cursor: pointer; user-select: none; }
.ref-card-label { font-weight: 700; color: #1f2937; font-size: 0.95rem; }
.ref-card-toggle { color: #9ca3af; font-size: 0.7rem; transition: transform 0.2s; }
.ref-card-grade { margin-left: auto; display: flex; align-items: center; gap: 6px; font-size: 0.85rem; font-weight: 600; color: #1d4ed8; }
.ref-card-grade label { background: #eff6ff; color: #1d4ed8; padding: 1px 8px; border-radius: 4px; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.3px; }
.ref-card-body { padding: 0; }

.ref-card.collapsed .ref-card-body { display: none; }
.ref-card.collapsed .ref-card-head { border-bottom: none; }
.ref-card.collapsed .ref-card-toggle { transform: rotate(-90deg); }

.ref-card--subject .ref-card-head { background: linear-gradient(135deg, #eff6ff 0%, #f8f9fa 100%); }
.ref-card--fixed .ref-card-head { background: linear-gradient(135deg, #f5f3ff 0%, #f8f9fa 100%); }
.ref-card--missing { border-color: #fbbf24; }
.ref-card--missing .ref-card-head { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); }

.ref-card-unsaved { display: none; font-size: 0.7rem; color: #d97706; font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }
.ref-card.changed .ref-card-unsaved { display: inline; }

.ref-card-body .ck-editor__editable { border: none !important; border-radius: 0 !important; box-shadow: none !important; }
.ref-card-body .ck-sticky-panel__content { border: none !important; border-bottom: 1px solid #e5e7eb !important; }

.ref-card-drag { cursor: grab; color: #9ca3af; font-size: 1rem; padding: 2px 4px; transition: color 0.2s; }
.ref-card-drag:hover { color: #2563eb; }
.ref-card--draggable.dragging { opacity: 0.5; box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2); }
.ref-card--draggable.drag-over { border-top: 3px solid #2563eb; }

.ref-locked .ref-card-body { pointer-events: none; opacity: 0.6; }
.ref-locked .ref-card-grade select { pointer-events: none; opacity: 0.6; }
.ref-locked .ref-card-drag { display: none; }

/* ─── Reference viewer (SDReference.php) ──────────────────────────────────── */

.uref-status {
  width: 100%;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: #f8f9fa;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #374151;
  flex-wrap: wrap;
}

.uref-status-item { display: flex; align-items: center; gap: 5px; }
.uref-status-label { font-weight: 600; color: #6b7280; text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.3px; }
.uref-missing { color: #b45309; font-weight: 600; }

/* ─── Submitted stamp ─────────────────────────────────────────────────────── */

.ref-stamp {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 10px 24px 10px 16px;
  border: 3px solid #059669;
  color: #059669;
  font-weight: 900;
  text-transform: uppercase;
  transform: rotate(-2deg);
  line-height: 1.3;
  background: repeating-linear-gradient(
    135deg,
    transparent,
    transparent 8px,
    rgba(5, 150, 105, 0.03) 8px,
    rgba(5, 150, 105, 0.03) 16px
  );
}

.ref-stamp::before {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1.5px solid #059669;
  opacity: 0.3;
}

.ref-stamp__icon {
  font-size: 2rem;
  opacity: 0.25;
  line-height: 1;
}

.ref-stamp__text {
  text-align: center;
}

.ref-stamp__title {
  font-size: 1.2rem;
  letter-spacing: 0.3em;
}

.ref-stamp__date {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  opacity: 0.6;
  margin-top: 1px;
}

.ref-stamp--approved {
  border-color: #1d4ed8;
  color: #1d4ed8;
  border-width: 4px;
  background: repeating-linear-gradient(
    135deg,
    transparent,
    transparent 6px,
    rgba(29, 78, 216, 0.04) 6px,
    rgba(29, 78, 216, 0.04) 12px
  );
}

.ref-stamp--approved::before {
  border-color: #1d4ed8;
}

.ref-stamp--clickable {
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.ref-stamp--clickable:hover {
  transform: rotate(-2deg) scale(1.03);
  box-shadow: 0 3px 10px rgba(29, 78, 216, 0.2);
}

.uref-status--warning { background: #fffbeb; border-color: #fbbf24; }

.uref-content {
  background-color: #ffffff;
  padding: 20px;
  border: 2px solid #ecf0f1;
  border-radius: 8px;
  white-space: pre-wrap;
  min-height: 600px;
  width: 900px;
  overflow-y: auto;
  font-size: 15px !important;
  color: #34495e;
  text-align: left;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.uref-viewer { display: flex; flex-direction: column; margin: 20px 20px; width: 900px; }

/* ─── Shared layout ───────────────────────────────────────────────────────── */

.ref-container { max-width: 1250px; margin: 0 auto; }
.ref-container--pad { max-width: 1250px; margin: 20px auto; }

.ref-student { display: flex; align-items: center; gap: 12px; max-width: 1250px; margin: 20px auto; }
.ref-student__avatar { width: 100px; height: 100px; border-radius: 50%; object-fit: cover; }
.ref-student__name { font-weight: 700; font-size: 1.1rem; color: #1d4ed8; text-decoration: none; }
.ref-student__meta { color: #6b7280; font-size: 0.85rem; }

/* ─── Prep toolbar ────────────────────────────────────────────────────────── */

.ref-prep-toolbar { max-width: 1250px; margin: 20px auto; display: flex; align-items: center; gap: 0; background: #f8f9fa; border: 1px solid #e5e7eb; border-radius: 6px; overflow: hidden; }
.ref-prep-toolbar__cell { padding: 10px 16px; border-right: 1px solid #e5e7eb; }
.ref-prep-toolbar__cell--end { padding: 10px 16px; margin-left: auto; border-right: none; }
.ref-prep-toolbar__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.4px; color: #6b7280; font-weight: 600; }
.ref-prep-toolbar__label i { margin-right: 2px; }
.ref-prep-toolbar__value { font-weight: 600; color: #1f2937; }
.ref-prep-toolbar__value--muted { color: #9ca3af; font-style: italic; }
.ref-prep-toolbar__value--success { font-weight: 600; color: #059669; }
.ref-prep-toolbar__value--danger { font-weight: 600; color: #dc2626; }
.ref-prep-toolbar__count { font-weight: 700; font-size: 1.1rem; color: #1f2937; }

.ref-prep-toolbar__pill {
  margin-left: 8px;
  border: none;
  font-weight: 600;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 999px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.ref-prep-toolbar__pill--return { background: #fef3c7; color: #b45309; }
.ref-prep-toolbar__pill--submit { background: #d1fae5; color: #065f46; }

.ref-prep-toolbar__icon--subject { color: #7c3aed; }
.ref-prep-toolbar__icon--status { color: #d97706; }
.ref-prep-toolbar__icon--template { color: #2563eb; }
.ref-prep-toolbar__icon--chars { color: #059669; }

.ref-stamp--right { margin-left: auto; }

/* ─── Prep card icons ─────────────────────────────────────────────────────── */

.ref-card-icon { color: #9ca3af; font-size: 1rem; padding: 2px 4px; }
.ref-card-icon--missing { color: #d97706; }

.ref-card-unsaved__dot { font-size: 0.5rem; vertical-align: middle; }

/* ─── Prep sections container ─────────────────────────────────────────────── */

.ref-sections { max-width: 1250px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.ref-sortable { display: flex; flex-direction: column; gap: 12px; }

.ref-actions { display: flex; justify-content: center; gap: 10px; margin: 12px 0; }

/* ─── Guides footer ───────────────────────────────────────────────────────── */

.ref-guides { text-align: center; margin: 15px auto; }
.ref-guides__divider { border-top: 1px solid #e5e7eb; padding-top: 12px; }
.ref-guides__title { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.4px; color: #6b7280; font-weight: 600; }
.ref-guides__title i { margin-right: 4px; color: #9ca3af; }
.ref-guides__links { display: flex; gap: 16px; margin-top: 4px; justify-content: center; }

/* ─── Subject reference form (ucasSubject.php) ────────────────────────────── */

.ref-subj-wrap { max-width: 550px; margin: 0 auto; }
.ref-subj-form-wrap { max-width: 780px; margin: 0 auto; }
.ref-subj-lock { border: 2px solid #FF7E00; background: #FFD190; padding: 8px 12px; margin-bottom: 10px; text-align: center; border-radius: 4px; }
.ref-subj-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.ref-subj-grade { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.ref-subj-saved { font-size: 0.85em; color: #888; }
.ref-subj-textarea { width: 100%; box-sizing: border-box; }

/* ─── Dialog form ─────────────────────────────────────────────────────────── */

.ref-dialog { padding: 16px; }
.ref-dialog__label { display: block; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.4px; color: #6b7280; font-weight: 600; margin-bottom: 6px; }
.ref-dialog__input { width: 100%; box-sizing: border-box; }
.ref-dialog__actions { text-align: right; margin-top: 10px; }

/* ─── Group code in references overview ───────────────────────────────────── */

.ref-subject-code { font-weight: normal; color: #888; }

/* ─── Reference status tracking (referenceStatus.php) ─────────────────────── */

.ref-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.ref-status-pill--done { background: #d1fae5; color: #065f46; }
.ref-status-pill--wip { background: #eff6ff; color: #1d4ed8; }
.ref-status-pill--waiting { background: #fef3c7; color: #92400e; }
.ref-status-pill--none { background: #f3f4f6; color: #9ca3af; }


.ref-status-row { cursor: pointer; }
.ref-status-row:hover { filter: brightness(0.95); }
.ref-status-row td { padding: 10px 8px; }

.ref-toolbar--spaced { margin-top: 12px; }
.ref-stamp--left { align-self: flex-start; margin-bottom: 12px; }

.ref-subj-details { display: flex; gap: 10px; }
.ref-subj-details__info { padding-top: 5px; }