/* ═══════════════════════════════════════════════════════
   English Notes — styles.css
═══════════════════════════════════════════════════════ */

:root {
  --bg-deep:   #0f1117;
  --bg-panel:  #161b27;
  --bg-panel2: #1c2333;
  --bg-input:  #1e2535;
  --bg-hover:  #232c3f;
  --bg-active: #2a3550;
  --border:    #1e2840;
  --border-l:  #2a3550;
  --text:      #e2e8f0;
  --muted:     #7a8aab;
  --faint:     #4a5568;
  --accent:    #4f8ef7;
  --accent-d:  #3a7ae0;
  --danger:    #ef4444;
  --mono:      'DM Mono', monospace;
  --sans:      'DM Sans', sans-serif;
  --radius:    10px;
  --shadow:    0 4px 24px rgba(0,0,0,.4);
  /* UI font size — controlled by settings */
  --ui-fs: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body { font-family: var(--sans); background: var(--bg-deep); color: var(--text); font-size: var(--ui-fs); line-height: 1.5; }

.hidden { display: none !important; }

/* ═══════════════ LOGIN ═══════════════ */
.login-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 40% 30%, #1a2540 0%, var(--bg-deep) 70%);
  z-index: 1000;
}
.login-screen.hidden { display: none; }
.login-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-l);
  border-radius: 18px;
  padding: 36px 32px 28px;
  width: 340px;
  box-shadow: var(--shadow);
}
.login-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.21em; font-weight: 600; color: var(--text);
  margin-bottom: 28px;
}
.login-roles { display: flex; flex-direction: column; gap: 10px; }
.login-sub   { color: var(--muted); font-size: 0.93em; margin-bottom: 4px; }
.login-role-btn {
  display: flex; flex-direction: column; align-items: flex-start; gap: 3px;
  padding: 14px 16px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: var(--radius); cursor: pointer;
  color: var(--text); font-size: 1.07em; font-weight: 500;
  font-family: var(--sans);
  transition: background .15s, border-color .15s;
  position: relative;
}
.login-role-btn:hover { background: var(--bg-hover); border-color: var(--accent); }
.login-role-btn.teacher:hover { border-color: #a78bfa; }
.login-role-btn span { font-size: 0.86em; color: var(--muted); font-weight: 400; }
.login-role-btn svg { margin-bottom: 4px; color: var(--accent); }
.login-role-btn.teacher svg { color: #a78bfa; }
.login-form { display: flex; flex-direction: column; gap: 10px; }
.login-form-title { font-size: 1.14em; font-weight: 600; }
.login-form-sub   { font-size: 0.89em; color: var(--muted); margin-top: -4px; }
.login-form input[type="text"],
.login-form input[type="email"],
.login-form input[type="password"] {
  padding: 10px 12px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 8px; color: var(--text); font-size: 1em; font-family: var(--sans);
  outline: none; transition: border-color .15s;
}
.login-form input:focus { border-color: var(--accent); }
.login-submit-btn {
  padding: 10px; background: var(--accent); color: #fff;
  border: none; border-radius: 8px; font-size: 1em; font-weight: 600;
  cursor: pointer; transition: background .15s; font-family: var(--sans);
}
.login-submit-btn:hover { background: var(--accent-d); }
.login-back-btn {
  background: none; border: none; color: var(--muted); font-size: 0.93em;
  cursor: pointer; text-align: center; font-family: var(--sans); padding: 2px;
}
.login-back-btn:hover { color: var(--text); }
.login-error { color: #f87171; font-size: 0.89em; }
.login-loading { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); padding: 20px 0; }
.spinner { width: 20px; height: 20px; border: 2px solid var(--border-l); border-top-color: var(--accent); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════ APP LAYOUT ═══════════════ */
.app-layout {
  display: grid;
  grid-template-columns: 120px 240px 1fr;
  height: 100vh;
  overflow: hidden;
}
.app-layout.sidebar-collapsed {
  grid-template-columns: 120px 0 1fr;
}
.app-layout.groups-hidden {
  grid-template-columns: 0 240px 1fr;
}
.app-layout.groups-hidden.sidebar-collapsed {
  grid-template-columns: 0 0 1fr;
}
.app-layout.groups-hidden .groups-panel { overflow: hidden; min-width: 0; width: 0; }
.app-layout.sidebar-collapsed .notes-panel { overflow: hidden; padding: 0; min-width: 0; }
.app-layout.student-view {
  grid-template-columns: 200px 240px 1fr;
}
.app-layout.student-view .groups-panel .panel-header { display: none; }

/* ── Student nav items inside groupsPanel ── */
.app-layout.student-view .groups-list {
  padding: 6px 0;
}
.student-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background .12s;
}
.student-nav-item:hover { background: var(--bg-hover); }
.student-nav-item.active {
  background: var(--bg-active);
  border-left-color: var(--accent);
}
.student-nav-icon { font-size: 1em; line-height: 1; flex-shrink: 0; }
.student-nav-label {
  font-size: 0.88em;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.student-nav-item:hover .student-nav-label { color: var(--text); }
.student-nav-item.active .student-nav-label { color: #fff; }

/* ═══════════════ PANEL GRUPOS (columna izquierda estrecha) ═══════════════ */
.groups-panel {
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  min-height: 50px;
}
.logo-small {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: .05em;
}
.groups-list {
  flex: 1; overflow-y: auto; padding: 8px 6px;
}
.group-item {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 10px 6px;
  border-radius: 8px; cursor: pointer;
  transition: background .12s;
  position: relative;
}
.group-item:hover  { background: var(--bg-hover); }
.group-item.active { background: var(--bg-active); }
.group-item-icon { font-size: 1.43em; line-height: 1; }
.group-item-name {
  font-size: 10px; font-weight: 600; text-align: center; color: var(--muted);
  max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  line-height: 1.2; width: 100%;
}
.group-item.active .group-item-name { color: var(--text); }
.group-item-code { display: none; }
.panel-empty {
  color: var(--faint); font-size: 0.79em; text-align: center;
  padding: 20px 8px; line-height: 1.6;
}

/* Tooltip para grupos al hover */
.group-item:hover .group-item-name { color: var(--text); }

/* ═══════════════ PANEL NOTAS (columna central) ═══════════════ */
.notes-panel {
  background: var(--bg-panel2);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
  transition: min-width .2s;
}
.notes-header { gap: 6px; }
.current-group-label {
  font-size: 0.89em; font-weight: 600; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1;
}
.search-wrap {
  position: relative; padding: 8px 10px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.search-icon { position: absolute; left: 20px; top: 50%; transform: translateY(-50%); color: var(--faint); pointer-events: none; }
#searchInput {
  width: 100%; padding: 7px 10px 7px 30px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 7px; color: var(--text); font-size: 0.93em; font-family: var(--sans); outline: none;
}
#searchInput:focus { border-color: var(--accent); }
.notes-list { flex: 1; overflow-y: auto; padding: 6px 0; }
.date-group-header {
  padding: 10px 12px 4px;
  font-size: 0.75em; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted);
}
.note-item {
  padding: 10px 14px;
  cursor: pointer; transition: background .12s;
  border-left: 3px solid transparent;
}
.note-item:hover  { background: var(--bg-hover); }
.note-item.active { background: var(--bg-active); border-left-color: var(--accent); }
.note-item-title {
  font-size: 0.93em; font-weight: 500; color: var(--text);
  display: block;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.note-item.active .note-item-title { color: #fff; }

/* ═══════════════ EDITOR AREA ═══════════════ */
.editor-area {
  display: flex; flex-direction: column;
  background: var(--bg-deep);
  overflow: hidden; position: relative;
}
.editor-area.no-note .page-wrapper { display: none; }
.editor-area.no-note .toolbar       { display: none; }
.editor-area.no-note .error-legend  { display: none; }
.editor-area.no-note .empty-state   { display: flex; }
.editor-area:not(.no-note) .empty-state { display: none; }

/* ─── Topbar ─── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; height: 50px;
  background: var(--bg-panel); border-bottom: 1px solid var(--border);
  flex-shrink: 0; gap: 8px;
}
.topbar-left  { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.topbar-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.sidebar-toggle {
  background: none; border: none; cursor: pointer; color: var(--muted);
  padding: 6px; border-radius: 6px; display: flex; align-items: center; flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--text); }
.doc-title-input {
  flex: 1; min-width: 0;
  background: none; border: none; outline: none;
  font-size: 1.07em; font-weight: 600; font-family: var(--sans); color: var(--text);
}
.doc-title-input::placeholder { color: var(--faint); }
.doc-title-readonly {
  flex: 1; min-width: 0;
  font-size: 1.07em; font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.save-status {
  font-size: 0.86em; color: var(--muted); opacity: 0; transition: opacity .3s;
  white-space: nowrap; display: flex; align-items: center; gap: 4px;
}
.save-status.visible  { opacity: 1; }
.save-status.saving   { color: var(--muted); }
.save-status.error    { color: #f87171; }
.meta-input {
  padding: 5px 8px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 6px; color: var(--text); font-size: 0.89em; font-family: var(--sans);
  outline: none;
}
.meta-input:focus { border-color: var(--accent); }
.meta-input[readonly] { opacity: .6; cursor: default; }
.role-badge {
  padding: 3px 10px; border-radius: 20px;
  font-size: 0.82em; font-weight: 600; white-space: nowrap;
}
.role-badge.teacher { background: rgba(167,139,250,.15); color: #a78bfa; }
.role-badge.student { background: rgba(79,142,247,.15);  color: var(--accent); }
.topbar-btn {
  padding: 5px 10px; border-radius: 6px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  color: var(--muted); font-size: 0.89em; cursor: pointer;
  font-family: var(--sans); transition: background .12s, color .12s;
  white-space: nowrap;
}
.topbar-btn:hover { background: var(--bg-hover); color: var(--text); }
.topbar-btn.logout-btn { color: #f87171; }
.topbar-btn.logout-btn:hover { background: rgba(239,68,68,.1); }
.topbar-btn.danger-btn { color: #f87171; padding: 5px 8px; }
.topbar-btn.danger-btn:hover { background: rgba(239,68,68,.1); }
.icon-btn {
  background: none; border: none; cursor: pointer;
  color: var(--muted); padding: 5px; border-radius: 6px;
  display: flex; align-items: center; transition: background .12s, color .12s;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }

/* ─── Toolbar ─── */
.toolbar {
  display: flex; align-items: center; flex-wrap: wrap; gap: 2px;
  padding: 5px 10px;
  background: var(--bg-panel); border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.toolbar-group { display: flex; align-items: center; gap: 2px; }
.toolbar button {
  padding: 5px 8px; border-radius: 5px;
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 0.93em; font-family: var(--sans);
  transition: background .12s, color .12s;
}
.toolbar button:hover  { background: var(--bg-hover); color: var(--text); }
.toolbar button.active { background: var(--bg-active); color: var(--accent); }
.toolbar select {
  padding: 4px 6px; border-radius: 5px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  color: var(--text); font-size: 0.89em; font-family: var(--sans); outline: none;
}
.divider { width: 1px; height: 20px; background: var(--border-l); margin: 0 3px; flex-shrink: 0; }
.font-size-group { gap: 4px; }
.font-size-display {
  min-width: 24px; text-align: center;
  font-size: 0.89em; color: var(--text); font-family: var(--mono);
}
.error-group { gap: 3px; }
.error-label { font-size: 0.82em; color: var(--faint); margin-right: 3px; }
.err-btn {
  padding: 3px 7px !important; font-size: 0.79em !important; font-weight: 700 !important; border-radius: 4px !important;
}
.err-btn[data-error="grammar"]       { color: #f87171 !important; }
.err-btn[data-error="word-order"]    { color: #fb923c !important; }
.err-btn[data-error="vocabulary"]    { color: #facc15 !important; }
.err-btn[data-error="pronunciation"] { color: #a78bfa !important; }
.err-btn[data-error="missing-word"]  { color: #34d399 !important; }
.err-btn[data-error="unnatural"]     { color: #22d3ee !important; }
.err-btn[data-error="cohesion"]      { color: #fb923c !important; }

/* ─── Error legend ─── */
.error-legend {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 5px 14px;
  background: var(--bg-panel); border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.legend-item { font-size: 0.79em; font-weight: 600; padding: 2px 7px; border-radius: 4px; }
.legend-item[data-error="grammar"]       { background: rgba(248,113,113,.15); color: #f87171; }
.legend-item[data-error="word-order"]    { background: rgba(251,146,60,.15);  color: #fb923c; }
.legend-item[data-error="vocabulary"]    { background: rgba(250,204,21,.15);  color: #facc15; }
.legend-item[data-error="pronunciation"] { background: rgba(167,139,250,.15); color: #a78bfa; }
.legend-item[data-error="missing-word"]  { background: rgba(52,211,153,.15);  color: #34d399; }
.legend-item[data-error="unnatural"]     { background: rgba(34,211,238,.15);  color: #22d3ee; }
.legend-item[data-error="cohesion"]      { background: rgba(251,146,60,.15);  color: #fb923c; }

/* ─── Page ─── */
.page-wrapper {
  flex: 1; overflow-y: auto; padding: 32px 24px;
  display: flex; justify-content: center; align-items: flex-start;
}
.page {
  width: 100%; max-width: 820px;
  background: #1a2030;
  border-radius: 10px; border: 1px solid var(--border-l);
  padding: 48px 56px;
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
  box-sizing: border-box;
  /* grow with content — no min-height cap */
}
.editor {
  min-height: 60vh; outline: none;
  line-height: 1.7; color: var(--text);
  font-family: var(--sans); font-size: 18px;
  word-wrap: break-word; overflow-wrap: break-word;
  position: relative; /* needed for absolute-positioned remote cursors */
  padding-top: 4px; /* prevent focused-element outline from being clipped at top */
}
.editor:empty::before {
  content: attr(data-placeholder);
  color: var(--faint); pointer-events: none;
}
.editor h1 { font-size: 1.8em; font-weight: 700; margin: .5em 0 .3em; }
.editor h2 { font-size: 1.4em; font-weight: 600; margin: .5em 0 .3em; }
.editor h3 { font-size: 1.15em; font-weight: 600; margin: .5em 0 .3em; }
.editor p  { margin: .3em 0; min-height: 1.7em; }
/* Ensure caret is visible on empty lines (lines with only a <br>) */
.editor p:empty,
.editor p > br:only-child {
  display: block;
}
.editor p:has(> br:only-child) { min-height: 1.7em; }
.editor ul, .editor ol { padding-left: 1.6em; margin: .3em 0; }
.editor hr { border: none; border-top: 1px solid var(--border-l); margin: 1em 0; }
.editor table {
  border-collapse: collapse; margin: .5em 0;
  table-layout: fixed;   /* ← key: prevents auto-expand */
  width: auto;           /* don't stretch to 100% */
}
.editor td, .editor th {
  border: 1.5px solid #ffffff; padding: 6px 10px;
  font-size: .92em; background: #2a3550; color: var(--text);
  overflow: hidden; word-break: break-word;
  position: relative; min-width: 30px; vertical-align: top;
}
.editor th { background: #1e2840; font-weight: 600; }

/* Resize handle — invisible strip on right edge of each cell */
.col-resize-handle {
  position: absolute; top: 0; right: 0;
  width: 8px; height: 100%;
  cursor: col-resize; z-index: 10;
  background: transparent;
  user-select: none;
}
.col-resize-handle:hover,
.col-resize-handle.dragging {
  background: var(--accent);
  opacity: .6;
}
.editor blockquote { border-left: 3px solid var(--accent); padding-left: 12px; color: var(--muted); margin: .5em 0; }

/* ─── Error marks ─── */
[class^="err-"] {
  border-radius: 3px;
  padding: 2px 3px;
  cursor: help;
  /* box-decoration-break:clone makes background + border-radius render
     correctly on EACH LINE when a marked span wraps across lines */
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  line-height: 1.7; /* match editor line-height to avoid spacing artifacts */
}
.err-grammar       { background: rgba(248,113,113,.25); color: #f87171; }
.err-word-order    { background: rgba(139,148,158,.15);  color: #8b949e; }
.err-vocabulary    { background: rgba(250,204,21,.25);  color: #facc15; }
.err-pronunciation { background: rgba(167,139,250,.25); color: #a78bfa; }
.err-missing-word  { background: rgba(52,211,153,.25);  color: #34d399; }
.err-unnatural     { background: rgba(34,211,238,.22);  color: #22d3ee; }
/* Tooltip shown via JS on hover — no ::after to avoid vertical line artifacts on adjacent lines */
.err-tooltip {
  position: fixed; z-index: 9700;
  background: #1a1c25; color: var(--text); font-size: 11px; padding: 3px 8px;
  border-radius: 5px; border: 1px solid var(--border-l); white-space: nowrap;
  pointer-events: none; font-family: var(--sans);
  box-shadow: 0 2px 8px rgba(0,0,0,.4);
}
.correct-mark { user-select: none; }
.common-mistake {
  background: rgba(251,146,60,.18);
  border-bottom: 2px solid #fb923c;
  border-radius: 2px;
  cursor: pointer;
}
.commented-text {
  background: rgba(79, 142, 247, 0.15);
  border-bottom: 1px dashed var(--accent);
  cursor: help;
  position: relative;
}
.commented-text::after {
  content: attr(data-comment);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #0d2a4a;
  color: #c9dff7;
  font-size: 13px;
  line-height: 1.5;
  padding: 8px 12px;
  border-radius: 7px;
  border: 1px solid #1e4a7a;
  box-shadow: 0 4px 16px rgba(0,0,0,0.45);
  white-space: pre-wrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
  z-index: 20;
  font-family: var(--sans);
  max-width: 480px;
  width: max-content;
}
.commented-text:hover::after { opacity: 1; }

/* ─── Comment Input Bubble ─── */
.comment-bubble {
  position: fixed; z-index: 9100;
  background: var(--bg-panel); border: 1px solid var(--border-l);
  border-radius: 8px; padding: 10px;
  box-shadow: var(--shadow);
  width: 400px;
  display: flex; flex-direction: column; gap: 8px;
}
.comment-bubble textarea {
  width: 100%; height: 70px; resize: none;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 4px; color: var(--text); font-family: var(--sans); font-size: 13px; padding: 8px;
  outline: none;
}
.comment-bubble textarea:focus { border-color: var(--accent); }
.comment-bubble-actions { display: flex; justify-content: flex-end; gap: 6px; }
.comment-bubble-actions button { padding: 5px 12px; border-radius: 4px; border: none; cursor: pointer; font-size: 12px; font-weight: 600; }
#saveCommentBtn { background: var(--accent); color: white; }
#cancelCommentBtn { background: transparent; color: var(--muted); border: 1px solid var(--border-l); }
#cancelCommentBtn:hover { background: var(--bg-hover); color: var(--text); }

/* ─── Empty state ─── */
.empty-state {
  position: absolute; inset: 0; display: none;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; color: var(--muted);
}
.empty-state p { font-size: 15px; }
.empty-new-btn {
  padding: 8px 18px; background: var(--accent); color: #fff;
  border: none; border-radius: 8px; font-size: 13.5px; font-weight: 600;
  cursor: pointer; transition: background .15s; font-family: var(--sans);
}
.empty-new-btn:hover { background: var(--accent-d); }

/* ═══════════════ CONTEXT MENU ═══════════════ */
.ctx-menu {
  position: fixed; z-index: 9000;
  background: #1a2030; border: 1px solid var(--border-l);
  border-radius: 9px; padding: 5px; min-width: 180px;
  box-shadow: var(--shadow); font-size: 13px;
}
.ctx-item {
  padding: 7px 12px; border-radius: 5px; cursor: pointer;
  color: var(--text); display: flex; align-items: center; gap: 6px;
  position: relative; user-select: none; white-space: nowrap;
}
.ctx-item:hover { background: var(--bg-hover); }
.ctx-divider   { height: 1px; background: var(--border); margin: 4px 6px; }
.ctx-has-sub > .sub-arrow  { margin-left: auto; opacity: .5; }
.ctx-submenu {
  position: fixed; z-index: 9001;
  background: #1a2030; border: 1px solid var(--border-l);
  border-radius: 9px; padding: 5px; min-width: 200px;
  box-shadow: var(--shadow); display: none;
}
.ctx-err-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  flex-shrink: 0;
}
.ctx-err-dot[data-error="grammar"]       { background: #f87171; }
.ctx-err-dot[data-error="word-order"]    { background: #fb923c; }
.ctx-err-dot[data-error="vocabulary"]    { background: #facc15; }
.ctx-err-dot[data-error="pronunciation"] { background: #a78bfa; }
.ctx-err-dot[data-error="missing-word"]  { background: #34d399; }
.ctx-err-dot[data-error="unnatural"]     { background: #22d3ee; }
.ctx-remove-err { color: #f87171; }
.ctx-correct    { color: #34d399; }
.ctx-danger     { color: #f87171; }

/* ═══════════════ MODALS ═══════════════ */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 8000;
  background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-panel); border: 1px solid var(--border-l);
  border-radius: 14px; padding: 24px; width: 400px; max-width: 95vw;
  box-shadow: var(--shadow);
}
.modal h3 { font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.modal p { color: var(--muted); font-size: 14px; }
.modal-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.modal-field label { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.modal-field input[type="text"],
.modal-field input[type="date"] {
  padding: 9px 12px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 8px; color: var(--text); font-size: 13.5px; font-family: var(--sans);
  outline: none; transition: border-color .15s;
}
.modal-field input:focus { border-color: var(--accent); }
.modal-error { color: #f87171; font-size: 12.5px; margin-top: -8px; margin-bottom: 6px; }
.modal-actions { display: flex; gap: 8px; margin-top: 18px; align-items: center; }
.modal-actions button {
  flex: 1; padding: 9px; border-radius: 8px; font-size: 13.5px; font-weight: 600;
  cursor: pointer; font-family: var(--sans); border: 1px solid var(--border-l);
  background: var(--bg-input); color: var(--muted); transition: background .12s;
}
.modal-actions button:hover { background: var(--bg-hover); color: var(--text); }
.modal-actions button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.modal-actions button.primary:hover { background: var(--accent-d); }
.modal-actions button.danger  { background: rgba(239,68,68,.1); color: #f87171; border-color: rgba(239,68,68,.3); flex: 0; padding: 9px 14px; }
.modal-actions button.danger:hover { background: rgba(239,68,68,.2); }
.field-hint { font-size: 11px; color: var(--faint); }
.code-input-wrap { display: flex; gap: 6px; }
.code-input-wrap input { flex: 1; }
.gen-code-btn {
  padding: 8px 12px; background: var(--bg-hover); border: 1px solid var(--border-l);
  border-radius: 8px; color: var(--muted); cursor: pointer; font-size: 16px;
  transition: background .12s;
}
.gen-code-btn:hover { background: var(--bg-active); color: var(--text); }

/* ─── Table modal ─── */
.table-modal { max-width: 340px; }
.table-inputs { display: flex; gap: 16px; margin-bottom: 14px; }
.table-inputs label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--muted); flex: 1; }
.table-inputs input { padding: 7px 10px; background: var(--bg-input); border: 1px solid var(--border-l); border-radius: 6px; color: var(--text); font-size: 13px; outline: none; }
.table-preview { display: grid; gap: 2px; margin-bottom: 14px; min-height: 40px; }
.tp-cell { height: 18px; background: var(--bg-hover); border-radius: 2px; }
.tp-cell.header { background: var(--bg-active); }

/* ─── Profile modal ─── */
.profile-modal { max-width: 360px; }
.color-pick-row { display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.color-pick-row input[type="color"] {
  width: 38px; height: 34px; border: 1px solid var(--border-l); border-radius: 7px;
  padding: 2px; background: var(--bg-input); cursor: pointer; flex-shrink: 0;
}
.color-presets { display: flex; gap: 6px; flex-wrap: wrap; }
.color-preset {
  width: 22px; height: 22px; border-radius: 50%; cursor: pointer;
  border: 2px solid transparent; transition: transform .1s, border-color .1s;
}
.color-preset:hover { transform: scale(1.2); border-color: #fff; }
.avatar-preview-row { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.avatar-preview {
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 700; color: #fff;
  background: var(--accent); flex-shrink: 0; border: 2px solid var(--border-l);
}
.avatar-preview-label { font-size: 12px; color: var(--muted); }

/* ═══════════════ COLLABORATORS ═══════════════ */
.collaborators { display: flex; align-items: center; gap: 2px; }
.collab-avatar {
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: #fff;
  border: 2px solid var(--bg-deep); cursor: default; user-select: none;
  margin-left: -4px; flex-shrink: 0;
}
.collab-avatar:first-child { margin-left: 0; }
.collab-avatar:hover { transform: translateY(-2px); z-index: 1; }
.collab-avatar.is-typing { animation: typing-pulse 1s ease-in-out infinite; }
@keyframes typing-pulse { 0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)} }
.collab-count { font-size: 11px; color: var(--muted); margin-left: 6px; white-space: nowrap; }
.typing-indicator { display: flex; align-items: center; gap: 5px; font-size: 11.5px; color: var(--muted); margin-left: 6px; white-space: nowrap; animation: fadeIn .2s; }
@keyframes fadeIn { from{opacity:0;transform:translateY(2px)} to{opacity:1;transform:none} }
.typing-dots { display: flex; gap: 2px; align-items: center; }
.typing-dots span { width: 4px; height: 4px; border-radius: 50%; background: var(--muted); display: block; animation: dot-bounce .9s ease-in-out infinite; }
.typing-dots span:nth-child(2){animation-delay:.15s}
.typing-dots span:nth-child(3){animation-delay:.30s}
@keyframes dot-bounce { 0%,80%,100%{transform:translateY(0);opacity:.5}40%{transform:translateY(-4px);opacity:1} }

/* ═══════════════ IMÁGENES ═══════════════ */
.img-wrapper { position: relative; display: inline-block; cursor: default; vertical-align: middle; line-height: 0; overflow: visible; }
.img-wrapper img { display: block; width: 100%; height: 100%; max-width: none; border-radius: 4px; user-select: none; }
.img-wrapper.selected img { outline: 2px solid var(--accent); border-radius: 4px; }
.img-wrapper.selected { cursor: grab; }
.img-wrapper.selected:active { cursor: grabbing; }
.img-wrapper.img-dragging { opacity: .3; }
.editor.img-drag-active { cursor: copy; }
.img-toolbar {
  position: absolute; top: -38px; left: 50%; transform: translateX(-50%);
  background: #1a2030; border: 1px solid var(--border-l);
  border-radius: 7px; padding: 3px; gap: 2px;
  box-shadow: var(--shadow); z-index: 10; white-space: nowrap;
}
.img-toolbar button {
  padding: 4px 7px; border-radius: 4px; background: none;
  border: none; color: var(--muted); font-size: 12px; cursor: pointer;
  font-family: var(--sans);
}
.img-toolbar button:hover { background: var(--bg-hover); color: var(--text); }
.itb-divider { width: 1px; height: 16px; background: var(--border-l); margin: 0 2px; display: inline-block; vertical-align: middle; }
.img-resize-handle {
  position: absolute; width: 12px; height: 12px;
  background: var(--accent); border: 2px solid #fff;
  border-radius: 50%; z-index: 11;
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
  display: none;
}
.img-wrapper.selected .img-resize-handle { display: block; }
.img-resize-handle.nw { top: -6px; left: -6px; cursor: nw-resize; }
.img-resize-handle.n  { top: -6px; left: 50%; transform: translateX(-50%); cursor: n-resize; }
.img-resize-handle.ne { top: -6px; right: -6px; cursor: ne-resize; }
.img-resize-handle.w  { top: 50%; left: -6px; transform: translateY(-50%); cursor: w-resize; }
.img-resize-handle.sw { bottom: -6px; left: -6px; cursor: sw-resize; }
.img-resize-handle.se { bottom: -6px; right: -6px; cursor: se-resize; }
.img-resize-handle.e  { top: 50%; right: -6px; transform: translateY(-50%); cursor: e-resize; }
.img-resize-handle.s  { bottom: -6px; left: 50%; transform: translateX(-50%); cursor: s-resize; }

.img-size-badge {
  position: absolute; bottom: 6px; left: 6px;
  background: rgba(0,0,0,.75); color: #fff;
  font-size: 10px; padding: 2px 5px; border-radius: 4px;
  pointer-events: none; display: none; font-family: var(--mono);
}
.img-drag-ghost {
  position: fixed; pointer-events: none; z-index: 9999;
  border: 2px dashed var(--accent); border-radius: 4px;
  background: rgba(79,142,247,.08);
}
.drop-caret {
  position: fixed; width: 2px; background: var(--accent);
  pointer-events: none; z-index: 9998; border-radius: 1px; display: none;
}

/* ═══════════════ SCROLLBAR ═══════════════ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-l); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--faint); }

/* ═══════════════ RESPONSIVE ═══════════════ */
@media (max-width: 700px) {

  /* ── Layout: full-width single column ── */
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }
  .app-layout.student-view {
    grid-template-columns: 1fr;
  }
  .app-layout.student-view .groups-panel,
  .app-layout.student-view .notes-panel { display: none; }
  .groups-panel, .notes-panel { display: none; }

  /* Slide-in panels as overlays */
  .app-layout.mobile-show-notes .notes-panel {
    display: flex;
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 500;
    width: 280px;
    box-shadow: 4px 0 24px rgba(0,0,0,.5);
  }
  .app-layout.mobile-show-groups .groups-panel {
    display: flex;
    position: fixed;
    left: 0; top: 0; bottom: 0;
    z-index: 501;
    width: 100px;
    box-shadow: 4px 0 24px rgba(0,0,0,.5);
  }

  /* ── Topbar ── */
  .topbar { padding: 0 10px; height: 50px; gap: 6px; }
  .doc-title-input, .doc-title-readonly { font-size: .95em; }
  .role-badge { display: none; }
  .meta-input[type="date"] { display: none; }
  .save-status { display: none; }
  /* Hide secondary topbar buttons, keep only menu + toggle */
  .topbar-btn:not(#topbarMenuBtn) { display: none; }
  #topbarMenuBtn { font-size: .82em; padding: 5px 8px; }

  /* ── Toolbar: scrollable single row ── */
  .toolbar {
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 4px 8px;
    gap: 1px;
  }
  .toolbar::-webkit-scrollbar { display: none; }
  .toolbar button { padding: 5px 7px; font-size: .85em; flex-shrink: 0; }
  .toolbar select { font-size: .82em; max-width: 90px; flex-shrink: 0; }
  .divider { flex-shrink: 0; }
  .font-size-display { display: none; }

  /* ── Page / Editor ── */
  .page-wrapper { padding: 12px 8px; }
  .page {
    padding: 20px 16px;
    border-radius: 8px;
  }
  .editor { font-size: 16px; }

  /* ── Error legend: hide on mobile ── */
  .error-legend { display: none !important; }

  /* ── Login screen ── */
  .login-card {
    width: calc(100vw - 32px);
    padding: 28px 20px 22px;
    border-radius: 14px;
  }

  /* ── Modals: full-width ── */
  .modal-overlay { padding: 12px; }
  .modal { width: 100% !important; max-width: 100% !important; padding: 20px 16px; }

  /* ── Context menu: larger touch targets ── */
  .ctx-item { padding: 10px 14px; font-size: 14px; }

  /* ── Radial menu: slightly smaller to fit screen ── */
  #radialMenu { transform-origin: center; }

  /* ── Activity panel ── */
  .act-picker-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .act-panel-title { font-size: 13px; }

  /* ── Table context menu ── */
  #tableCtxMenu { max-width: calc(100vw - 24px); }

  /* ── Topbar dropdown ── */
  .topbar-dropdown {
    right: 8px !important;
    left: auto !important;
    max-width: calc(100vw - 16px);
  }
}

/* ═══════════════ ITALIC CURSOR ═══════════════ */
.editor.italic-active {
  caret-color: transparent; /* hide native caret */
}
#italicCaret {
  position: fixed;
  width: 2px;
  background: var(--text);
  pointer-events: none;
  z-index: 200;
  border-radius: 1px;
  transform: skewX(-12deg);
  animation: caret-blink 1.1s step-end infinite;
  display: none;
}
@keyframes caret-blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ═══════════════ REMOTE CURSORS ═══════════════ */
#remote-cursors {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 0;
  pointer-events: none; z-index: 40;
  overflow: visible;
}
.remote-cursor-wrap {
  position: absolute;
  pointer-events: none;
}
.remote-cursor-line {
  width: 2px; height: 100%;
  border-radius: 1px;
  animation: rc-blink 1.1s ease-in-out infinite;
}
@keyframes rc-blink { 0%,100%{opacity:1} 45%,55%{opacity:.15} }
.remote-cursor-label {
  position: absolute;
  top: -19px; left: 0;
  color: #fff;
  font-size: 11px; font-weight: 600;
  padding: 1px 6px;
  border-radius: 3px 3px 3px 0;
  white-space: nowrap;
  font-family: var(--sans);
  line-height: 1.4;
  pointer-events: none;
}

/* ═══════════════ TOOLTIP GRUPOS ═══════════════ */
.group-item { position: relative; }
.group-tooltip {
  position: fixed;
  background: #1a2030;
  border: 1px solid var(--border-l);
  color: var(--text);
  font-size: 12px;
  padding: 4px 9px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 9999;
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity .15s;
}
.group-tooltip.visible { opacity: 1; }

/* ═══════════════ SETTINGS MODAL ═══════════════ */
.settings-modal { max-width: 380px; }
.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid var(--border);
}
.settings-row:last-child { border-bottom: none; }
.settings-label { font-size: 13.5px; color: var(--text); }
.settings-hint  { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.settings-row input[type="number"] {
  width: 72px; padding: 6px 10px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 6px; color: var(--text); font-size: 14px; font-family: var(--sans);
  outline: none; text-align: center;
}
.settings-row input[type="number"]:focus { border-color: var(--accent); }

/* ═══════════════ SPELL CHECK UNDERLINES ═══════════════ */
/* Red underline = likely spelling error (via browser spellcheck) */
/* Blue underline = grammar/style suggestion overlay */
.spell-error {
  text-decoration: underline wavy #ef4444;
  text-decoration-skip-ink: none;
}
.spell-grammar {
  text-decoration: underline wavy #3b82f6;
  text-decoration-skip-ink: none;
}

/* ═══════════════ COMMENT HIGHLIGHT ═══════════════ */
.commented-text {
  background: rgba(253, 224, 71, 0.18) !important;
  border-bottom: 1px dashed #fbbf24 !important;
  cursor: help;
  position: relative;
}

/* ═══════════════ SIDEBAR TOGGLE POSITION ═══════════════ */
.topbar-sidebar-toggle {
  background: none; border: none; cursor: pointer; color: var(--muted);
  padding: 6px; border-radius: 6px; display: flex; align-items: center; flex-shrink: 0;
}
.topbar-sidebar-toggle:hover { background: var(--bg-hover); color: var(--text); }

/* ═══════════════ TABLE CONTEXT MENU ═══════════════ */
.table-ctx-menu {
  position: fixed; z-index: 9500;
  background: #1a2030; border: 1px solid var(--border-l);
  border-radius: 9px; padding: 5px; min-width: 230px;
  box-shadow: var(--shadow); font-size: 0.93em;
  display: none;
}
.table-ctx-menu .ctx-item { padding: 7px 12px; border-radius: 5px; cursor: pointer;
  color: var(--text); display: flex; align-items: center; gap: 8px; user-select: none; }
.table-ctx-menu .ctx-item:hover { background: var(--bg-hover); }
.table-ctx-menu .ctx-divider { height: 1px; background: var(--border); margin: 4px 6px; }
.table-ctx-menu .ctx-item.danger { color: #f87171; }
/* styling rows */
.table-ctx-style-row {
  display: flex; align-items: center; gap: 8px; padding: 5px 12px;
  font-size: 0.86em; color: var(--muted);
}
.table-ctx-style-row label { flex: 1; }
.table-ctx-style-row .color-swatch-btn {
  width: 26px; height: 26px; border-radius: 5px; border: 2px solid var(--border-l);
  cursor: pointer; position: relative; overflow: hidden; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; transition: border-color .15s;
}
.table-ctx-style-row .color-swatch-btn:hover { border-color: var(--accent); }
.table-ctx-style-row .color-swatch-btn input[type="color"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.table-ctx-style-row select {
  flex: 1; padding: 3px 6px; background: var(--bg-input); border: 1px solid var(--border-l);
  color: var(--text); border-radius: 5px; font-size: 0.93em; outline: none;
}

/* ═══════════════ HIGHLIGHT / CALLOUT BOX ═══════════════ */
.highlight-box {
  border-radius: 7px;
  padding: 12px 16px;
  margin: 8px 0;
  display: block;
  border-left: 4px solid #facc15;
  background: rgba(250,204,21,.10);
  color: var(--text);
  font-style: normal;
}
.highlight-box .hb-label {
  font-size: 0.79em; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; margin-bottom: 5px; display: block;
  color: #facc15; opacity: .9;
}

/* ═══════════════ HIGHLIGHT MODAL ═══════════════ */
.highlight-modal { max-width: 340px; }
.hb-label-input { margin-top: 4px; }
.hb-label-input input {
  width: 100%; padding: 7px 10px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 6px; color: var(--text); font-size: 0.93em; font-family: var(--sans);
  outline: none;
}
.hb-label-input input:focus { border-color: var(--accent); }

/* ═══════════════ SPELL CHECK ═══════════════ */
.sp-error {
  text-decoration: underline wavy #ef4444;
  text-decoration-skip-ink: none;
  cursor: pointer;
}
.sp-grammar {
  text-decoration: underline wavy #3b82f6;
  text-decoration-skip-ink: none;
}
/* Spell suggestion tooltip */
.spell-tooltip {
  position: fixed; z-index: 9600;
  background: #1a2030; border: 1px solid var(--border-l);
  border-radius: 8px; padding: 6px;
  box-shadow: var(--shadow); min-width: 160px;
  font-size: 13px; display: none;
}
.spell-suggestion {
  padding: 6px 12px; border-radius: 5px; cursor: pointer;
  color: var(--text); display: flex; align-items: center; gap: 6px;
}
.spell-suggestion:hover { background: var(--bg-hover); }
.spell-suggestion.primary { color: var(--accent); font-weight: 600; }
.spell-ignore { padding: 5px 12px; color: var(--muted); font-size: 12px; cursor: pointer; border-radius: 5px; }
.spell-ignore:hover { background: var(--bg-hover); color: var(--text); }
.spell-divider { height: 1px; background: var(--border); margin: 3px 6px; }

/* ═══════════════ GROUPS PANEL TRANSITION ═══════════════ */
.app-layout { transition: grid-template-columns .2s ease; }
.groups-panel { transition: width .2s ease, min-width .2s ease; overflow: hidden; }

/* ═══════════════ SPELL TOOLTIP EXTRAS ═══════════════ */
.spell-msg {
  padding: 5px 12px 2px; font-size: 0.82em; color: var(--muted);
  max-width: 240px; line-height: 1.4; white-space: normal;
}
.spell-tooltip { min-width: 180px; max-width: 280px; }

/* ═══════════════ TABLE CELL SELECTION ═══════════════ */
.editor td.cell-selected,
.editor th.cell-selected {
  outline: 2px solid var(--accent) !important;
  outline-offset: -2px;
}
.focused-element {
  background-color: rgba(79, 142, 247, 0.12) !important;
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
  transition: background-color 0.3s, outline 0.3s;
  animation: focus-pulse 2s ease-in-out 3;
}
@keyframes focus-pulse {
  0%, 100% { outline: 2px solid var(--accent); }
  50%       { outline: 3px solid var(--accent); }
}
}
.tbl-apply-btn {
  flex: 1; padding: 4px 6px; border-radius: 5px;
  background: var(--bg-hover); border: 1px solid var(--border-l);
  color: var(--muted); font-size: 0.79em; cursor: pointer;
  font-family: var(--sans); transition: background .12s, color .12s;
}
.tbl-apply-btn:hover { background: var(--bg-active); color: var(--text); }

/* ═══════════════ SPELL CHECK STATUS ═══════════════ */
.spell-status {
  position: fixed; bottom: 12px; right: 16px;
  font-size: 0.79em; color: var(--muted);
  background: var(--bg-panel); border: 1px solid var(--border-l);
  padding: 3px 10px; border-radius: 20px;
  pointer-events: none; opacity: 0;
  transition: opacity .3s;
  z-index: 100;
}
.spell-status.visible { opacity: 1; pointer-events: auto; }

/* ═══════════════ TOGGLE SWITCH ═══════════════ */
.toggle-switch { position: relative; display: inline-block; width: 40px; height: 22px; flex-shrink: 0; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-track {
  position: absolute; inset: 0;
  background: var(--bg-active); border-radius: 22px;
  transition: background .2s;
}
.toggle-track::after {
  content: ''; position: absolute;
  left: 3px; top: 3px;
  width: 16px; height: 16px;
  background: #fff; border-radius: 50%;
  transition: transform .2s;
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(18px); }

/* ═══════════════ AUDIO BLOCKS ═══════════════ */
.audio-block {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-hover); border: 1px solid var(--border-l);
  border-radius: 8px; padding: 8px 10px;
  margin: 6px 0; max-width: 480px;
}
.audio-del-btn {
  background: none; border: none; color: var(--muted);
  cursor: pointer; font-size: 14px; padding: 2px 6px;
  border-radius: 4px; flex-shrink: 0;
}
.audio-del-btn:hover { background: var(--bg-active); color: var(--danger); }

/* Visualizer bars */
.audio-bar {
  display: inline-block; width: 4px; height: 6px;
  background: var(--accent); border-radius: 2px;
  transition: height .1s;
}
#audioVisualizer.recording .audio-bar:nth-child(1) { animation: bar-bounce .6s ease infinite 0s; }
#audioVisualizer.recording .audio-bar:nth-child(2) { animation: bar-bounce .6s ease infinite .1s; }
#audioVisualizer.recording .audio-bar:nth-child(3) { animation: bar-bounce .6s ease infinite .2s; }
#audioVisualizer.recording .audio-bar:nth-child(4) { animation: bar-bounce .6s ease infinite .1s; }
#audioVisualizer.recording .audio-bar:nth-child(5) { animation: bar-bounce .6s ease infinite 0s; }
@keyframes bar-bounce {
  0%,100% { height: 6px; }
  50%      { height: 24px; }
}

/* ═══════════════ AUDIO ANCHORS ═══════════════ */
.audio-anchor {
  display: inline;
  cursor: pointer;
  font-size: 1em;
  user-select: none;
  border-radius: 3px;
  padding: 0 1px;
  transition: background .15s;
}
.audio-anchor:hover { background: rgba(79,142,247,.18); }

.audio-popup {
  position: absolute;
  z-index: 9999;
  background: #1a2030;
  border: 1px solid var(--border-l);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  gap: 8px;
}
.audio-popup-close {
  background: none; border: none;
  color: var(--muted); font-size: 14px;
  cursor: pointer; padding: 2px 6px;
  border-radius: 4px; flex-shrink: 0;
}
.audio-popup-close:hover { background: var(--bg-active); color: var(--danger); }

/* ═══════════════ COLOR PICKERS IN TOOLBAR ═══════════════ */
.color-picker-wrap {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 27px; border-radius: 5px; cursor: pointer;
  border: 1px solid var(--border-l); background: var(--bg-input);
  overflow: visible; transition: border-color .12s;
}
.color-picker-wrap:hover { border-color: var(--accent); }
.color-picker-wrap input[type="color"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.color-picker-icon {
  font-size: 13px; font-weight: 800; color: var(--text);
  pointer-events: none; user-select: none; line-height: 1;
}
.color-picker-icon-bg { font-size: 15px; }

/* ── Custom color palette dropdown ── */
.color-palette-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 9000;
  background: #1c2128;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,.6);
  width: 220px;
}
.color-palette-dropdown.open { display: block; }
.color-palette-grid {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 3px;
  margin-bottom: 8px;
}
.color-swatch {
  width: 16px; height: 16px; border-radius: 50%; cursor: pointer;
  border: 1px solid rgba(255,255,255,.1);
  transition: transform .1s, box-shadow .1s;
  flex-shrink: 0;
}
.color-swatch:hover { transform: scale(1.35); box-shadow: 0 2px 8px rgba(0,0,0,.5); border-color: rgba(255,255,255,.4); }
.color-palette-custom {
  display: flex; align-items: center; gap: 6px;
  padding-top: 7px; border-top: 1px solid rgba(255,255,255,.08);
}
.color-palette-custom input[type="color"] {
  width: 20px; height: 20px; border: 1px solid rgba(255,255,255,.2);
  background: none; cursor: pointer; padding: 0; border-radius: 4px;
}
.color-palette-custom-label {
  font-size: 11px; color: #8b949e; cursor: pointer;
}
.toolbar-clear-color {
  padding: 3px 5px !important; font-size: 10px !important;
  color: var(--faint) !important; border-radius: 4px !important;
}
.toolbar-clear-color:hover { color: var(--danger) !important; background: rgba(239,68,68,.1) !important; }

/* ═══════════════ ARCHIVED ITEMS IN NOTES LIST ═══════════════ */
.notes-archived-section { margin-top: 8px; }
.notes-archived-header {
  font-size: 11px; font-weight: 600; color: var(--faint);
  padding: 6px 12px 3px; text-transform: uppercase; letter-spacing: .06em;
  display: flex; align-items: center; gap: 6px; cursor: pointer;
  user-select: none;
}
.notes-archived-header:hover { color: var(--muted); }
.note-item.archived { opacity: 0.55; }
.note-item.archived .note-item-title::before { content: '📦 '; font-size: 10px; }
.group-item.archived { opacity: 0.5; }
.group-item.archived .group-item-name::before { content: '📦 '; font-size: 10px; }
.btn-archive {
  padding: 9px 14px; border-radius: 8px; font-size: 13.5px; font-weight: 600;
  cursor: pointer; font-family: var(--sans);
  background: rgba(250,204,21,.1); color: #facc15;
  border: 1px solid rgba(250,204,21,.3); flex: 0;
  transition: background .12s;
}
.btn-archive:hover { background: rgba(250,204,21,.2); }

/* ═══════════════ VERSION HISTORY MODAL ═══════════════ */
.version-modal { max-width: 820px; width: 95vw; }
.version-hint { font-size: 12px; color: var(--muted); margin: -10px 0 14px; }
.version-layout { display: grid; grid-template-columns: 220px 1fr; gap: 12px; height: 420px; }
.version-list {
  overflow-y: auto; border: 1px solid var(--border-l);
  border-radius: 8px; background: var(--bg-input);
}
.version-loading { padding: 20px; text-align: center; color: var(--muted); font-size: 13px; }
.version-item {
  padding: 9px 12px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background .12s;
  font-size: 12.5px;
}
.version-item:last-child { border-bottom: none; }
.version-item:hover { background: var(--bg-hover); }
.version-item.active { background: var(--bg-active); }
.version-item-time { font-weight: 600; color: var(--text); }
.version-item-by { color: var(--muted); font-size: 11px; margin-top: 2px; }
.version-preview-wrap {
  border: 1px solid var(--border-l); border-radius: 8px;
  background: #1a2030; overflow: hidden;
  display: flex; flex-direction: column;
}
.version-preview-label {
  padding: 7px 12px; font-size: 11.5px; color: var(--muted);
  border-bottom: 1px solid var(--border); background: var(--bg-input);
  font-weight: 600;
}
.version-preview {
  flex: 1; overflow-y: auto; padding: 16px 20px;
  font-family: var(--sans); font-size: 15px; color: var(--text);
  line-height: 1.7; pointer-events: none;
}

/* ═══════════════ WHITEBOARD MODAL ═══════════════ */
.whiteboard-modal {
  max-width: 98vw; width: 98vw; padding: 0;
  height: 92vh; display: flex; flex-direction: column;
  border-radius: 14px; overflow: hidden;
}
.whiteboard-topbar {
  display: flex; align-items: center; gap: 8px; padding: 8px 14px;
  background: var(--bg-panel); border-bottom: 1px solid var(--border);
  flex-shrink: 0; flex-wrap: wrap;
}
.whiteboard-title { font-size: 14px; font-weight: 700; color: var(--text); margin-right: 6px; white-space: nowrap; }
.whiteboard-tools { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; flex: 1; }
.wb-tool {
  padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border-l);
  background: var(--bg-input); color: var(--text); cursor: pointer;
  font-size: 15px; font-weight: 600; transition: background .12s, color .12s, border-color .12s;
}
.wb-tool:hover { background: var(--bg-hover); color: var(--text); }
.wb-tool.active { background: var(--bg-active); border-color: var(--accent); color: var(--accent); }
.wb-action {
  padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border-l);
  background: var(--bg-input); color: var(--text); cursor: pointer;
  font-size: 13px; font-weight: 500; transition: background .12s, color .12s;
  white-space: nowrap;
}
.wb-action:hover { background: var(--bg-hover); color: var(--text); }
.wb-divider { width: 1px; height: 22px; background: var(--border-l); margin: 0 2px; }
.wb-size-wrap { display: flex; align-items: center; gap: 6px; }
.wb-size-wrap input[type="range"] { width: 80px; accent-color: var(--accent); }
#wbSizeLabel { font-size: 12px; font-weight: 600; color: var(--text); min-width: 30px; }
#wbColor { width: 32px; height: 30px; border-radius: 5px; border: 2px solid var(--border-l); padding: 1px; background: var(--bg-input); cursor: pointer; }
.wb-close {
  margin-left: auto; padding: 5px 10px; border-radius: 6px; border: none;
  background: none; color: var(--muted); cursor: pointer; font-size: 15px; flex-shrink: 0;
}
.wb-close:hover { background: var(--bg-hover); color: var(--text); }
.whiteboard-canvas-wrap {
  flex: 1; overflow: hidden; background: #ffffff;
  display: flex; align-items: stretch; justify-content: stretch;
}
#whiteboardCanvas { display: block; width: 100%; height: 100%; touch-action: none; }

/* ═══════════════ ARCHIVED MODAL ═══════════════ */
.archived-modal { max-width: 480px; }
.archived-tabs { display: flex; gap: 4px; margin: -8px 0 14px; }
.archived-tab {
  flex: 1; padding: 7px; border-radius: 7px; border: 1px solid var(--border-l);
  background: var(--bg-input); color: var(--muted); cursor: pointer;
  font-size: 13px; font-weight: 500; transition: background .12s, color .12s;
  font-family: var(--sans);
}
.archived-tab.active { background: var(--bg-active); color: var(--text); border-color: var(--accent); }
.archived-list { max-height: 340px; overflow-y: auto; }
.archived-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 7px; margin-bottom: 4px;
  background: var(--bg-input); border: 1px solid var(--border-l);
}
.archived-item-name { flex: 1; font-size: 13.5px; color: var(--text); }
.archived-item-sub { font-size: 11px; color: var(--muted); margin-top: 2px; }
.archived-restore-btn {
  padding: 4px 10px; border-radius: 5px; border: 1px solid var(--border-l);
  background: none; color: var(--accent); cursor: pointer; font-size: 12px;
  font-family: var(--sans); transition: background .12s;
  white-space: nowrap;
}
.archived-restore-btn:hover { background: rgba(79,142,247,.12); }

/* ═══════════════ TOPBAR DROPDOWN MENU ═══════════════ */
.topbar-menu-wrap {
  position: relative;
}
.topbar-menu-btn {
  display: flex; align-items: center; gap: 3px;
}
.topbar-dropdown {
  display: none;
  position: absolute; top: calc(100% + 6px); right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border-l);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  min-width: 210px;
  z-index: 9500;
  overflow: hidden;
  padding: 4px;
}
.topbar-dropdown.open { display: block; }
.tdrop-section {
  padding: 4px 0;
}
.tdrop-section + .tdrop-section {
  border-top: 1px solid var(--border);
  margin-top: 2px; padding-top: 6px;
}
.tdrop-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--faint);
  padding: 2px 12px 4px;
}
.tdrop-item {
  display: flex; align-items: center; gap: 8px;
  width: 100%; text-align: left;
  background: none; border: none; cursor: pointer;
  font-family: var(--sans); font-size: 13px; color: var(--text);
  padding: 7px 12px; border-radius: 7px;
  transition: background .1s;
}
.tdrop-item:hover { background: var(--bg-hover); }
.tdrop-item.danger { color: #f87171; }
.tdrop-item.danger:hover { background: rgba(239,68,68,.1); }

/* ═══════════════ REPETITION ERROR ═══════════════ */
.err-repetition { background: rgba(244,114,182,.25); color: #f472b6; }
.err-cohesion   { background: rgba(251,146,60,.25);  color: #fb923c; }
.err-btn[data-error="repetition"] { color: #f472b6 !important; }
.legend-item[data-error="repetition"] { background: rgba(244,114,182,.15); color: #f472b6; }
.ctx-err-dot[data-error="repetition"] { background: #f472b6; }

/* ═══════════════ COLOR PICKER SWATCH PREVIEW ═══════════════ */
.color-picker-wrap {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 27px; border-radius: 5px; cursor: pointer;
  border: 1px solid var(--border-l); background: var(--bg-input);
  overflow: visible; transition: border-color .12s; flex-direction: column; gap: 1px;
}
.color-picker-wrap:hover { border-color: var(--accent); }
.color-picker-icon {
  font-size: 12px; font-weight: 800; color: var(--text);
  pointer-events: none; user-select: none; line-height: 1;
}
.color-swatch-bar {
  width: 20px; height: 4px; border-radius: 2px;
  pointer-events: none; display: block; flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════
   ACTIVITIES — INLINE PANEL
════════════════════════════════════════════════════════════ */

/* Panel fills the editorArea exactly like page-wrapper */
.activity-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
  background: var(--bg-main);
}

/* Panel top bar */
.act-panel-header {
  display: flex; align-items: center;
  padding: 10px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg-panel);
}
.act-panel-header-left { display: flex; align-items: center; gap: 16px; }
.act-panel-back {
  display: flex; align-items: center; gap: 6px;
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 13px; font-family: var(--sans);
  padding: 5px 10px; border-radius: 6px; transition: background .1s, color .1s;
}
.act-panel-back:hover { background: var(--bg-hover); color: var(--text); }
.act-panel-title { font-size: 14px; font-weight: 600; color: var(--text); }

/* Scrollable screen */
.act-panel-screen {
  flex: 1; overflow-y: auto;
  padding: 28px 40px;
}

/* ── Level sections (picker) ── */
/* ── Level sections (picker) ── */
.act-levels-wrap { display: flex; flex-direction: column; gap: 10px; max-width: 860px; }

/* Accordion button */
.act-accordion-btn {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; font-size: 13px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; font-family: var(--sans); transition: opacity .12s, border-radius .15s;
  text-align: left;
}
.act-accordion-btn.act-level-pre   { background: rgba(52,211,153,.12);  color: #34d399; border-color: rgba(52,211,153,.2); }
.act-accordion-btn.act-level-int   { background: rgba(79,142,247,.12);  color: #4f8ef7; border-color: rgba(79,142,247,.2); }
.act-accordion-btn.act-level-upper { background: rgba(167,139,250,.12); color: #a78bfa; border-color: rgba(167,139,250,.2); }
.act-accordion-btn.act-level-adv   { background: rgba(248,113,113,.12); color: #f87171; border-color: rgba(248,113,113,.2); }
.act-accordion-btn.act-level-misc  { background: rgba(251,191,36,.1);   color: #fbbf24; border-color: rgba(251,191,36,.2); }
.act-accordion-btn:hover { opacity: .85; }
.act-accordion-btn.open  { border-radius: 10px 10px 0 0; }

/* Chevron rotation */
.act-accordion-chevron { flex-shrink: 0; transition: transform .2s; }
.act-accordion-btn.open .act-accordion-chevron { transform: rotate(180deg); }

/* Accordion body */
.act-accordion-body {
  display: none; border: 1px solid rgba(255,255,255,.08);
  border-top: none; border-radius: 0 0 10px 10px;
  padding: 14px; background: var(--bg-panel);
}
.act-accordion-body.open { display: block; }

/* Uniform grid */
.act-picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.act-picker-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 16px 12px; border-radius: 10px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  cursor: pointer; text-align: center; transition: border-color .12s, background .12s;
  height: 100%; justify-content: center;
}
.act-picker-card:hover { border-color: var(--accent); background: var(--bg-hover); }
.act-card-soon { opacity: .4; cursor: default; pointer-events: none; }
.act-card-icon  { font-size: 48px; }
.act-card-title { font-size: 14px; font-weight: 600; font-family: var(--mono); color: var(--text); line-height: 1.4; }
.act-card-desc  { font-size: 11px; color: var(--muted); }

/* Access code row — teacher only, shown via JS */
.act-code-display {
  display: flex; align-items: center; gap: 8px;
  margin-top: 8px; padding-top: 8px;
  border-top: 1px solid var(--border);
  width: 100%; font-size: 12px; color: var(--muted);
}
.act-code-label { white-space: nowrap; }
.act-code-value {
  color: var(--accent); font-family: var(--mono);
  letter-spacing: .08em; font-size: 13px; font-weight: 700;
}
.act-copy-code-btn {
  margin-left: auto;
  background: var(--bg-input); border: 1px solid var(--border-l);
  color: var(--muted); cursor: pointer; padding: 4px 10px; border-radius: 6px;
  font-size: 12px; font-family: var(--sans); white-space: nowrap;
  transition: background .1s, color .1s, border-color .1s;
}
.act-copy-code-btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--accent); }

/* ── Activity header ── */
.act-activity-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 20px;
}
.act-activity-name { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.act-activity-meta { font-size: 12px; color: var(--muted); }
.act-back-to-list {
  background: none; border: 1px solid var(--border-l); cursor: pointer;
  color: var(--muted); font-size: 12px; font-family: var(--sans);
  padding: 5px 12px; border-radius: 6px; white-space: nowrap; flex-shrink: 0;
}
.act-back-to-list:hover { background: var(--bg-hover); color: var(--text); }

/* ── Step tabs ── */
.act-step-tabs {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}
.act-step-tab {
  background: none; border: none; border-bottom: 2.5px solid transparent;
  padding: 8px 18px; font-size: 13px; font-weight: 500; color: var(--muted);
  cursor: pointer; font-family: var(--sans); margin-bottom: -1px;
  transition: color .1s, border-color .1s;
}
.act-step-tab:hover { color: var(--text); }
.act-step-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.act-step-content {}
.act-step-sub { font-size: 13px; color: var(--muted); margin-bottom: 18px; }

/* ════════════════════════════════════
   SIDE-BY-SIDE MATCHING
════════════════════════════════════ */
.act-sidebyside {
  display: grid;
  grid-template-columns: 1fr 72px 1fr;
  margin-bottom: 20px;
  position: relative;
}
.act-col { display: flex; flex-direction: column; gap: 6px; }

/* SVG column — same height as tallest column via JS */
.act-col-svg {
  position: relative;
  align-self: stretch;
}
.act-col-svg svg {
  position: absolute;
  top: 0; left: 0;
  width: 72px; height: 100%;
  overflow: visible;
}

/* Word pills */
.act-word-pill {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 9px; min-height: 44px;
  background: var(--bg-panel); border: 1.5px solid var(--border-l);
  cursor: pointer; user-select: none;
  transition: border-color .1s, background .1s;
}
.act-word-pill:hover:not(.correct):not(.wrong) { border-color: var(--accent); }
.act-word-pill.selected { border-color: var(--accent); background: rgba(79,142,247,.12); }
.act-word-pill.matched  { border-color: rgba(79,142,247,.35); }
.act-word-pill.correct  { border-color: #34d399 !important; background: rgba(52,211,153,.1); cursor: default; }
.act-word-pill.wrong    { border-color: #f87171 !important; background: rgba(248,113,113,.08); }
.act-word-name { font-size: 14px; font-weight: 600; color: var(--text); flex: 1; }
.act-see-ex {
  font-size: 11px; color: var(--accent); white-space: nowrap; flex-shrink: 0;
  border: 1px solid var(--border-l); background: var(--bg-input);
  border-radius: 20px; padding: 2px 8px; cursor: pointer; font-family: var(--sans);
}
.act-see-ex:hover { background: rgba(79,142,247,.12); }
.act-example-bubble {
  font-size: 12px; color: var(--muted); font-style: italic;
  padding: 6px 12px; background: var(--bg-input);
  border-left: 2px solid var(--accent); border-radius: 0 6px 6px 0;
  margin-top: -3px; margin-bottom: 4px; display: none; line-height: 1.5;
}

/* Definition cards */
.act-def-card {
  display: flex; align-items: center;
  padding: 10px 14px; border-radius: 9px; min-height: 44px;
  background: var(--bg-panel); border: 1.5px solid var(--border-l);
  font-size: 13px; color: var(--text); cursor: pointer;
  line-height: 1.45; user-select: none;
  transition: border-color .1s, background .1s;
}
.act-def-card:hover:not(.correct):not(.wrong) { border-color: var(--accent); }
.act-def-card.matched  { border-color: rgba(79,142,247,.35); }
.act-def-card.correct  { border-color: #34d399 !important; background: rgba(52,211,153,.1); cursor: default; }
.act-def-card.wrong    { border-color: #f87171 !important; background: rgba(248,113,113,.08); }
.act-def-card-text { flex: 1; }
.act-remove-link {
  flex-shrink: 0; margin-left: 8px; font-size: 12px; color: var(--faint);
  background: none; border: none; cursor: pointer; padding: 2px 5px; border-radius: 4px;
}
.act-remove-link:hover { color: #f87171; background: rgba(248,113,113,.12); }

/* Connector lines */
.act-connector-line         { stroke: rgba(79,142,247,.55); stroke-width: 2.5; fill: none; stroke-linecap: round; }
.act-connector-line.correct { stroke: #34d399; stroke-width: 3; }
.act-connector-line.wrong   { stroke: #f87171; stroke-width: 3; }

/* ── Buttons ── */
.act-check-row { display: flex; align-items: center; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.act-btn-primary {
  padding: 8px 20px; border-radius: 8px; font-size: 13px; font-weight: 500;
  background: var(--accent); color: #fff; border: none; cursor: pointer; font-family: var(--sans);
}
.act-btn-primary:hover { opacity: .88; }
.act-btn-secondary {
  padding: 8px 16px; border-radius: 8px; font-size: 13px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  color: var(--muted); cursor: pointer; font-family: var(--sans);
}
.act-btn-secondary:hover { background: var(--bg-hover); color: var(--text); }
.act-score-msg { font-size: 13px; color: var(--muted); }

/* ── Classify ── */
.act-word-bank {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 14px; background: var(--bg-input);
  border: 1px solid var(--border-l); border-radius: 10px;
  margin-bottom: 18px; min-height: 56px;
}
.act-drag-word {
  background: var(--bg-panel); border: 1px solid var(--border-l);
  border-radius: 20px; padding: 7px 16px; font-size: 13px;
  color: var(--text); cursor: grab; user-select: none; transition: border-color .1s;
}
.act-drag-word:hover { border-color: var(--accent); }
.act-drag-word.dragging { opacity: .35; }
.act-classify-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.act-classify-box {
  border-radius: 12px; border: 1.5px solid var(--border-l); padding: 14px; min-height: 140px;
}
.act-box-good { border-color: rgba(52,211,153,.5); }
.act-box-bad  { border-color: rgba(248,113,113,.4); }
.act-classify-box.over { background: var(--bg-hover); }
.act-box-label { font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.act-box-good .act-box-label { color: #34d399; }
.act-box-bad  .act-box-label { color: #f87171; }
.act-drop-zone { display: flex; flex-wrap: wrap; gap: 6px; min-height: 70px; align-content: flex-start; }
.act-result-badge { font-size: 10px; padding: 2px 6px; border-radius: 8px; margin-left: 5px; font-weight: 600; }
.act-result-badge.ok { background: rgba(52,211,153,.2); color: #34d399; }
.act-result-badge.no { background: rgba(248,113,113,.15); color: #f87171; }

/* ── Activity row with code box ── */
.act-activity-row { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.act-code-box {
  display: none; flex-direction: column; gap: 6px;
  background: var(--bg-panel); border: 1px solid var(--border-l);
  border-radius: 10px; padding: 14px 16px; min-width: 180px;
}
.act-code-box-label {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted);
}
.act-code-box-value {
  font-size: 26px; font-weight: 700; font-family: var(--mono);
  color: var(--accent); letter-spacing: .1em;
}
.act-code-copy-btn {
  background: var(--accent); color: #fff; border: none; cursor: pointer;
  padding: 6px 12px; border-radius: 7px; font-size: 12px; font-weight: 600;
  font-family: var(--sans); transition: opacity .1s; text-align: center;
}
.act-code-copy-btn:hover { opacity: .85; }

/* ── Activity context menu (shown on right-click of activity cards) ── */
#actCtxMenu { z-index: 9700; position: fixed; min-width: 180px; }
.unmatch-hint {
  position: absolute; top: 4px; right: 7px;
  font-size: 10px; color: rgba(255,255,255,.3); pointer-events: none;
}

/* ── Find bar ── */
.find-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-l);
  z-index: 200;
}
.find-bar input {
  flex: 1; max-width: 220px;
  background: var(--bg-input); border: 1px solid var(--border-l);
  border-radius: 6px; padding: 5px 10px;
  color: var(--text); font-size: 13px; font-family: var(--sans);
  outline: none;
}
.find-bar input:focus { border-color: var(--accent); }
.find-count {
  font-size: 12px; color: var(--muted); min-width: 52px; text-align: center;
}
.find-bar button {
  background: none; border: 1px solid var(--border-l);
  border-radius: 5px; color: var(--muted);
  font-size: 14px; padding: 3px 8px; cursor: pointer; line-height: 1;
}
.find-bar button:hover { background: var(--bg-hover); color: var(--text); }
.find-highlight {
  background: rgba(255, 214, 0, 0.35);
  border-radius: 2px;
}
.find-highlight.find-current {
  background: rgba(255, 160, 0, 0.7);
  color: #fff;
  border-radius: 2px;
}

/* ── Score block layout ─────────────────────────────────────── */
.score-block {
  border: 1px solid var(--border-l);
  border-radius: 10px;
  overflow: hidden;
  margin: 12px 0;
  user-select: none;
}
.score-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-hover);
  border-bottom: 1px solid var(--border-l);
}
.score-block-title { font-size: 13px; font-weight: 700; color: var(--text); }
.score-block-info-btn {
  background: none; border: 1px solid var(--border-l); border-radius: 50%;
  color: var(--muted); font-size: 12px; width: 20px; height: 20px;
  cursor: pointer; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.score-block-del {
  background: none; border: none; color: var(--muted); font-size: 14px;
  cursor: pointer; line-height: 1; padding: 2px 4px; border-radius: 4px;
}
.score-block-del:hover { color: var(--text); background: var(--bg-hover); }
.score-block-body { padding: 4px 0; }

.score-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  gap: 12px;
}
.score-row:not(:last-child) { border-bottom: 1px solid rgba(255,255,255,.05); }

.score-cat {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  min-width: 160px;
  flex-shrink: 0;
}
.score-cat-val {
  font-weight: 700;
  color: #d29922;
  margin-left: 6px;
}

.score-stars {
  display: flex;
  gap: 2px;
  align-items: center;
  cursor: pointer;
}

.score-star-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}
.score-star-icon {
  font-size: 18px;
  line-height: 1;
  pointer-events: none;
}
.score-star-half-l,
.score-star-half-r {
  position: absolute;
  top: 0;
  height: 100%;
  width: 50%;
  z-index: 1;
  cursor: pointer;
}
.score-star-half-l { left: 0; }
.score-star-half-r { right: 0; }

/* ═══════════════ USER MANAGEMENT ═══════════════ */
.um-user-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px;
  transition: background .12s;
}
.um-user-row:hover { background: var(--bg-hover); }
.um-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
  flex-shrink: 0;
}
.um-user-info {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 1px;
}
.um-user-name {
  font-size: 13px; font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.um-user-sub {
  font-size: 11px; color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.um-user-actions { display: flex; gap: 4px; flex-shrink: 0; }
.um-edit-btn, .um-delete-btn {
  background: none; border: 1px solid var(--border-l);
  border-radius: 6px; padding: 3px 7px; cursor: pointer;
  font-size: 12px; color: var(--muted);
  transition: background .12s, color .12s;
}
.um-edit-btn:hover   { background: var(--bg-hover); color: var(--text); }
.um-delete-btn:hover { background: rgba(248,113,113,.15); color: #f87171; border-color: #f87171; }

/* ═══════════════ RADIAL ERROR MENU ═══════════════ */
.radial-sector {
  cursor: pointer;
  transition: opacity .12s;
}
.radial-sector:hover { opacity: .85; }
.radial-label {
  position: absolute;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  pointer-events: none;
  line-height: 1.3;
  text-shadow: 0 1px 4px rgba(0,0,0,.7);
  max-width: 70px;
  transform: translate(-50%, -50%);
  white-space: normal;
  letter-spacing: .01em;
}
.radial-more-sector { cursor: pointer; }
.radial-more-sector:hover { opacity: .75; }
#radialMenu.open { display: block !important; }
#radialMenu::before {
  content: '';
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.25);
  pointer-events: all;
}
.radial-more-item { font-size: 13px; color: var(--text); }
.radial-more-item:hover { background: var(--bg-hover); }