/* ── Notes Grid ────────────────────────────────────────────────────────────── */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  max-width: 100%;
  margin: 0 auto;
}

/* ── Note Card ─────────────────────────────────────────────────────────────── */
.note-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all .25s;
  position: relative;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.04);
  font-family: 'Cinzel', 'Georgia', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  cursor: pointer;
}
.note-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 18px 42px rgba(0,0,0,.25);
}

/* Card pickup animation */
@keyframes cardPickup {
  0%   { transform: translateY(0) scale(1); }
  35%  { transform: translateY(-14px) rotate(-3deg) scale(1.04); }
  100% { transform: translateY(-2px) rotate(0deg) scale(1.01); }
}
.note-card.picking-up {
  animation: cardPickup .55s cubic-bezier(.34,1.56,.64,1);
}

.note-card-top {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.note-type-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: inherit;
  font-size: .65rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
  margin-bottom: 6px;
}
.type-pdf  .note-type-badge { background: rgba(110,181,224,.12); color: #6EB5E0; }
.type-docx .note-type-badge { background: rgba(126,203,144,.12); color: #7ECB90; }
.type-md   .note-type-badge { background: rgba(201,160,220,.12); color: #C9A0DC; }

.note-info { flex: 1; min-width: 0; }
.note-title { font-family: 'Cinzel', 'Georgia', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif; font-weight: 600; font-size: 1.1rem; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.note-title-editable { cursor: pointer; }
.note-title-editable:hover .note-title-edit-hint { opacity: 1; }
.note-title-edit-hint {
  opacity: 0;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity .2s;
}
.note-title-edit-hint:hover { color: var(--accent-light); }
.note-title-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.note-title-input {
  flex: 1;
  padding: 3px 6px;
  background: rgba(255,255,255,.1);
  border: 1px solid var(--accent-light);
  border-radius: 4px;
  color: var(--text);
  font-size: .92rem;
  font-weight: 600;
  font-family: inherit;
  outline: none;
}
.note-meta { font-size: .72rem; color: var(--text-muted); margin-top: 2px; }

.note-visibility {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: .68rem;
  padding: 1px 7px;
  border-radius: 20px;
  font-weight: 500;
}
.note-visibility.public  { background: rgba(16,185,129,.12); color: #34d399; }
.note-visibility.private { background: rgba(107,107,141,.12); color: var(--text-muted); }

.note-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ── Note Footer (like + comment) ─────────────────────────────────────────── */
.note-footer {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.btn-like {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px 4px 7px;
  background: rgba(232,232,240,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .76rem;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s, border-color .22s;
}
.btn-like .icon-star {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  fill: none;
  stroke: var(--text-dim);
  stroke-width: 1.5;
  transition: transform .22s, fill .22s, stroke .22s;
}
.btn-like:hover .icon-star { transform: scale(1.15); stroke: var(--accent); }
.btn-like.liked .icon-star { fill: var(--accent); stroke: var(--accent); transform: scale(1.05); }
.btn-like:hover { background: rgba(245,213,98,.12); border-color: rgba(245,213,98,.25); color: var(--accent); }
.btn-like.liked { background: rgba(245,213,98,.15); border-color: rgba(245,213,98,.3); color: var(--accent); }

.btn-comment-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(232,232,240,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .76rem;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s, border-color .22s;
}
.btn-comment-toggle svg { width: 13px; height: 13px; }
.btn-comment-toggle:hover { background: rgba(245,213,98,.12); border-color: rgba(245,213,98,.2); color: var(--accent); }

.note-dl-count {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-left: auto;
  font-size: .72rem;
  color: var(--text-dim);
}
.note-dl-count svg { opacity: .5; width: 13px; height: 13px; }

/* ── Comment Section ───────────────────────────────────────────────────────── */
.comment-section {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.comments-list {
  max-height: 320px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 2px;
}

.comments-loading, .no-comments {
  font-size: .82rem;
  color: var(--text-muted);
  text-align: center;
  padding: 12px 0;
}

.comment-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  position: relative;
}

.comment-avatar {
  width: 28px; height: 28px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.comment-body { flex: 1; min-width: 0; }
.comment-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 3px; }
.comment-author-btn {
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent-light);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: opacity .2s;
}
.comment-author-btn:hover { opacity: .75; text-decoration: underline; }
.comment-date   { font-size: .75rem; color: var(--text-muted); }
.comment-text   { font-size: .85rem; color: var(--text-dim); line-height: 1.5; word-break: break-word; }

/* ── Comment Actions Row ───────────────────────────────────────────────────── */
.comment-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.btn-comment-like {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: rgba(232,232,240,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .78rem;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s, border-color .22s;
}
.btn-comment-like svg { width: 13px; height: 13px; }
.btn-comment-like:hover { color: #f87171; border-color: rgba(244,63,94,.25); background: rgba(244,63,94,.12); }
.btn-comment-like.liked { color: #f87171; background: rgba(244,63,94,.15); border-color: rgba(244,63,94,.3); }

.btn-reply-toggle, .btn-expand-replies {
  padding: 4px 10px;
  background: rgba(232,232,240,.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: .78rem;
  border-radius: 999px;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
}
.btn-reply-toggle:hover { color: var(--accent); background: rgba(245,213,98,.12); }
.btn-expand-replies { color: var(--accent); }
.btn-expand-replies:hover { background: rgba(245,213,98,.12); color: var(--accent); }

.btn-delete-comment {
  background: rgba(244,63,94,.06);
  border: 1px solid rgba(244,63,94,.15);
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 999px;
  flex-shrink: 0;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
  margin-left: auto;
  cursor: pointer;
}
.btn-delete-comment:hover { background: rgba(244,63,94,.15); color: #d94d67; }

/* ── Replies ───────────────────────────────────────────────────────────────── */
.replies-list {
  margin-top: 8px;
  padding-left: 12px;
  border-left: 2px solid rgba(245,213,98,.2);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.comment-item.is-reply .comment-avatar {
  width: 24px; height: 24px;
  font-size: .7rem;
}

.reply-input-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.comment-input-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.comment-input {
  flex: 1;
  padding: 9px 12px;
  background: rgba(255,255,255,.1);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-size: .85rem;
  outline: none;
  transition: border-color .2s;
}
.comment-input::placeholder { color: var(--text-muted); }
.comment-input:focus { border-color: var(--accent-light); }

/* ── Note Description Block ─────────────────────────────────────────────── */
.note-desc-block {
  background: rgba(245,213,98,.08);
  border: 1px solid rgba(245,213,98,.18);
  border-radius: var(--radius-xs);
  padding: 10px 12px;
  flex-shrink: 0;
}

.note-desc-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.btn-edit-desc {
  margin-left: auto;
  background: rgba(232,232,240,.08);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
  text-transform: none;
  letter-spacing: 0;
}
.btn-edit-desc:hover { background: var(--button-soft); color: var(--button-text); }

.note-desc-text {
  font-size: .83rem;
  color: var(--text-dim);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.desc-placeholder { color: var(--text-muted); font-style: italic; }

.desc-textarea {
  width: 100%;
  min-height: 72px;
  padding: 8px 10px;
  background: rgba(255,255,255,.1);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-size: .83rem;
  font-family: inherit;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  transition: border-color .2s;
}
.desc-textarea::placeholder { color: var(--text-muted); }
.desc-textarea:focus { border-color: var(--accent-light); }

.desc-edit-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.btn-cancel-desc {
  padding: 9px 14px;
  background: linear-gradient(105deg, rgba(255,255,255,.1), rgba(243,249,253,.68));
  border: 1px solid rgba(255,255,255,.1);
  color: var(--text-muted);
  border-radius: 999px;
  font-size: .83rem;
  font-weight: 600;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
  box-shadow: 0 7px 16px rgba(0,0,0,.25), inset 0 1px 1px rgba(255,255,255,.1);
}
.btn-cancel-desc:hover { background: var(--button-soft); color: var(--text); }

/* ── Note Author Button ──────────────────────────────────────────────────── */
.note-author-btn {
  background: none;
  border: none;
  color: var(--accent-light);
  font-size: inherit;
  padding: 0;
  cursor: pointer;
  transition: opacity .2s;
}
.note-author-btn:hover { opacity: .75; text-decoration: underline; }

/* ── Empty State ───────────────────────────────────────────────────────────── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
}
.empty-state p { color: var(--text-dim); font-size: 1.05rem; }

.mine-upload-notice {
  text-align: center; padding: 14px 20px; margin-bottom: 14px;
  background: rgba(245,213,98,.08); border: 1px solid rgba(245,213,98,.2);
  border-radius: 10px; color: var(--accent); font-size: .88rem;
  font-weight: 500; line-height: 1.6;
}
.mine-upload-notice.hidden { display: none; }

/* ── Preview ───────────────────────────────────────────────────────────────── */
.preview-view {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 0 !important;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  background: var(--accent);
  border: 1px solid rgba(245,213,98,.3);
  border-radius: 999px;
  color: var(--button-text);
  font-size: .88rem;
  margin: 14px 16px 10px;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
  box-shadow: var(--button-shadow);
  flex-shrink: 0;
}
.btn-back svg { width: 16px; height: 16px; }
.btn-back:hover { background: var(--button-soft-hover); box-shadow: var(--button-shadow-hover); }

#preview-frame {
  flex: 1;
  width: 100%;
  border: none;
  border-top: 1px solid var(--border);
}

/* ── Upload Categories ────────────────────────────────────────────────────── */
.category-section { margin-bottom: 10px; }
.category-label { font-size: .82rem; color: var(--text-dim); font-weight: 600; margin-bottom: 6px; }
.category-checks { display: flex; flex-wrap: wrap; gap: 6px; }
.cat-check {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 12px; background: rgba(232,232,240,.1);
  border: 1px solid rgba(232,232,240,.15); border-radius: 999px;
  font-size: .8rem; color: var(--text); cursor: pointer;
  transition: all .15s; user-select: none;
}
.cat-check:hover { border-color: var(--accent); background: rgba(245,213,98,.15); }
.cat-check input { display: none; }
.cat-check.checked { background: rgba(245,213,98,.25); border-color: var(--accent); color: var(--accent); font-weight: 600; }

/* ── Note Category Tags ───────────────────────────────────────────────────── */
.note-cats { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 4px; }
.cat-tag {
  display: inline-block; padding: 1px 8px; border-radius: 999px;
  font-size: .7rem; font-weight: 600; letter-spacing: .02em;
}
.cat-tag.major { background: rgba(245,213,98,.12); color: var(--accent); }
.cat-tag.subject { background: rgba(16,185,129,.12); color: #119968; }

/* ── Public Filter Dropdown ───────────────────────────────────────────────── */
.filter-dropdown {
  position: relative;
  flex-shrink: 0;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
}
.filter-btn:hover { background: rgba(255,255,255,.1); color: var(--text); }
.filter-arrow { width: 14px; height: 14px; transition: transform .2s; }
.filter-btn.open .filter-arrow { transform: rotate(180deg); }

.filter-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  padding: 6px;
  box-shadow: 0 16px 40px rgba(0,0,0,.25);
  backdrop-filter: blur(24px);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.filter-menu.hidden { display: none; }

.filter-option {
  display: block;
  width: 100%;
  padding: 9px 14px;
  background: none;
  border: none;
  border-radius: var(--radius-xs);
  color: var(--text-dim);
  font-size: .85rem;
  text-align: left;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.filter-option:hover { background: rgba(245,213,98,.1); color: var(--text); }
.filter-option.active { background: rgba(245,213,98,.14); color: var(--accent-light); font-weight: 600; }

/* Submenu */
.filter-submenu { position: relative; }

.filter-submenu-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}
.filter-subarrow {
  width: 13px; height: 13px;
  transition: transform .2s;
  flex-shrink: 0;
}
.filter-submenu-toggle.open .filter-subarrow { transform: rotate(90deg); }

.filter-submenu-items {
  padding-left: 8px;
  border-left: 2px solid rgba(245,213,98,.18);
  margin-left: 8px;
  margin-top: 2px;
  margin-bottom: 2px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.filter-submenu-items.hidden { display: none; }

.filter-suboption {
  font-size: .82rem;
  padding: 7px 14px;
}
.filter-suboption.active { background: rgba(245,213,98,.14); color: var(--accent-light); font-weight: 600; }

/* ── Filter Checkbox Submenu ──────────────────────────────────────────────── */
.filter-cat-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: var(--radius-xs);
  font-size: .82rem; color: var(--text-dim); cursor: pointer;
  transition: all .12s; white-space: nowrap;
}
.filter-cat-item:hover { background: rgba(245,213,98,.08); }
.filter-cat-item input { display: none; }
.filter-cat-item.checked { background: rgba(245,213,98,.12); color: var(--accent-light); font-weight: 500; }
.filter-cat-item .cat-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.filter-cat-item .cat-dot.major { background: var(--accent); }
.filter-cat-item .cat-dot.subject { background: #119968; }

/* ── Moderation Status ────────────────────────────────────────────────── */
.moderation-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,250,241,.78);
  backdrop-filter: blur(6px);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}

.moderation-pending {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--accent-light);
  font-size: .85rem;
  font-weight: 600;
}

.moderation-spinner {
  width: 24px; height: 24px;
  border: 3px solid rgba(245,213,98,.18);
  border-top-color: var(--accent-light);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.moderation-blocked-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: rgba(239,68,68,.12);
  border: 1px solid rgba(239,68,68,.25);
  border-radius: 999px;
  color: #d94d67;
  font-size: .72rem;
  font-weight: 600;
}

.moderation-blocked-reason {
  font-size: .75rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 4px;
}

/* ── Quiz ────────────────────────────────────────────────────────────── */
.quiz-questions-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; }

.quiz-question-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.1);
}
.quiz-question-card.answered { border-color: var(--border-accent); }

.quiz-q-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.quiz-q-num { font-weight: 800; font-size: .82rem; color: var(--accent-light); }
.quiz-q-type { font-size: .7rem; padding: 2px 8px; border-radius: 999px; font-weight: 600; }
.quiz-q-type.calculation { background: rgba(239,68,68,.1); color: #f87171; }
.quiz-q-type.basic { background: rgba(16,185,129,.1); color: #119968; }

.quiz-q-text { font-size: .92rem; color: var(--text); line-height: 1.6; margin-bottom: 12px; }

.quiz-options { display: flex; flex-direction: column; gap: 6px; }
.quiz-option {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: rgba(255,255,255,.42);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all .15s;
  font-size: .87rem; color: var(--text-dim);
}
.quiz-option:hover { background: rgba(245,213,98,.08); border-color: var(--accent-light); }
.quiz-option.selected { background: rgba(245,213,98,.14); border-color: var(--accent-light); color: var(--text); font-weight: 600; }
.quiz-option.correct { background: rgba(16,185,129,.1); border-color: #34d399; }
.quiz-option.wrong { background: rgba(239,68,68,.08); border-color: #f87171; }
.quiz-option.disabled { pointer-events: none; opacity: .85; }

.quiz-option-label {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--gradient-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700; color: var(--accent-light);
  flex-shrink: 0;
}

.quiz-explanation {
  margin-top: 12px;
  padding: 12px 14px;
  background: rgba(245,213,98,.06);
  border: 1px solid rgba(245,213,98,.14);
  border-radius: var(--radius-xs);
  font-size: .84rem; color: var(--text-dim); line-height: 1.6;
}
.quiz-explanation.answered-wrong { border-color: rgba(239,68,68,.18); background: rgba(239,68,68,.04); }
.quiz-explanation.answered-right { border-color: rgba(16,185,129,.18); background: rgba(16,185,129,.04); }

.quiz-chat-box {
  margin-top: 10px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.quiz-chat-toggle {
  font-size: .78rem; color: var(--accent-light); cursor: pointer;
  background: none; border: none; padding: 0;
}
.quiz-chat-toggle:hover { text-decoration: underline; }
.quiz-chat-messages {
  max-height: 200px; overflow-y: auto; margin: 8px 0;
  display: flex; flex-direction: column; gap: 8px;
}
.quiz-chat-msg { font-size: .8rem; line-height: 1.5; padding: 6px 10px; border-radius: 8px; max-width: 85%; }
.quiz-chat-msg.user { align-self: flex-end; background: var(--gradient-soft); color: var(--text); }
.quiz-chat-msg.ai { align-self: flex-start; background: rgba(255,255,255,.1); color: var(--text-dim); }
.quiz-chat-input-row { display: flex; gap: 6px; }
.quiz-chat-input-row input { flex: 1; padding: 6px 10px; border: 1px solid var(--border); border-radius: 999px; font-size: .8rem; outline: none; }
.quiz-chat-input-row button { padding: 6px 14px; background: var(--accent); color: var(--button-text); border: none; border-radius: 999px; font-size: .8rem; cursor: pointer; font-weight: 600; box-shadow: 0 0 10px rgba(245,213,98,.15); }
.quiz-chat-input-row button:hover { background: #E0C550; }

.quiz-submit-row { display: flex; gap: 12px; justify-content: center; padding: 24px 0 48px; }
.quiz-submit-row .btn-send,
.quiz-submit-row .btn-gradient { flex: 0 0 auto; padding: 12px 28px; font-size: .9rem; }
.quiz-score-box { text-align: center; padding: 16px 32px; background: var(--gradient-soft); border-radius: var(--radius); }
.quiz-score-box .score-num { font-size: 2.2rem; font-weight: 800; color: var(--accent-light); }
.quiz-score-box .score-total { font-size: .88rem; color: var(--text-muted); }

.quiz-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px 14px; box-shadow: var(--shadow-sm); transition: all .22s; display: flex; flex-direction: column; gap: 14px; }
.quiz-card:hover { border-color: var(--border-accent); background: var(--bg-card-hover); transform: translateY(-1px); box-shadow: 0 14px 34px rgba(0,0,0,.25); }
.quiz-card-body { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.quiz-card-left { min-width: 0; flex: 1; }
.quiz-card-title { font-weight: 600; font-size: 1.55rem; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 8px; }
.quiz-card-info-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.quiz-info-tag { display: inline-flex; align-items: center; gap: 3px; padding: 3px 10px; border-radius: 999px; font-size: .92rem; font-weight: 500; background: rgba(255,255,255,.1); border: 1px solid var(--border); color: var(--text-dim); white-space: nowrap; }
.quiz-card-status { padding: 5px 14px; border-radius: 999px; font-size: .75rem; font-weight: 600; white-space: nowrap; flex-shrink: 0; }
.quiz-card-status.draft { background: rgba(107,107,141,.1); color: var(--text-muted); }
.quiz-card-status.ready { background: rgba(59,130,246,.1); color: #3b82f6; }
.quiz-card-status.generating { background: rgba(255,193,7,.12); color: #d4a017; animation: pulse 1.5s ease-in-out infinite; }
.quiz-card-status.draft_error { background: rgba(239,68,68,.12); color: #d94d67; }
.quiz-card-status.published { background: rgba(16,185,129,.12); color: #34d399; }
.quiz-card-status.submitted { background: rgba(245,213,98,.12); color: var(--accent-light); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .6; } }
.quiz-card-actions { display: flex; gap: 8px; flex-shrink: 0; flex-wrap: wrap; padding-top: 4px; border-top: 1px solid var(--border); }
.quiz-card-actions button { padding: 7px 16px; border: 1px solid transparent; border-radius: 999px; font-size: .78rem; background: var(--accent); color: var(--button-text); cursor: pointer; transition: all .15s; white-space: nowrap; flex: 0 0 auto; box-shadow: 0 0 12px rgba(245,213,98,.15); }
.quiz-card-actions button:hover { background: #E0C550; box-shadow: 0 0 18px rgba(245,213,98,.3); }
.quiz-card-actions button.btn-delete-card { color: #d94d67; border-color: rgba(244,63,94,.18); background: linear-gradient(105deg, rgba(255,221,226,.8), rgba(255,248,238,.7)); }
.quiz-card-actions button.btn-delete-card:hover { background: linear-gradient(105deg, rgba(255,205,213,.95), rgba(255,245,235,.9)); }

.quiz-generating { text-align: center; padding: 20px; color: var(--text-muted); }
.quiz-spinner { width: 24px; height: 24px; border: 3px solid rgba(245,213,98,.18); border-top-color: var(--accent-light); border-radius: 50%; animation: spin .8s linear infinite; margin: 0 auto 12px; }