/* ==============================================
   planner.css  —  place in:  public/css/planner.css
   Load AFTER students.css — inherits all CSS variables.
   ============================================== */

/* ── nav-active for planner ───────────────────────────────── */
a.nav-active[href="planner.html"] { color: #00e5ff !important; }

/* ── Planner Tabs ─────────────────────────────────────────── */
.planner-tabs {
    display: flex; gap: .6rem; margin-bottom: 2rem; flex-wrap: wrap;
}
.planner-tab {
    display: inline-flex; align-items: center; gap: 8px;
    padding: .65rem 1.3rem; border-radius: var(--r-md);
    border: 1px solid rgba(42,250,223,.15);
    background: rgba(22,33,62,.6); color: var(--text-secondary);
    font-family: 'Inter', sans-serif; font-size: .9rem; font-weight: 600;
    cursor: pointer; transition: var(--ease);
}
.planner-tab:hover  { color: var(--text-primary); border-color: rgba(42,250,223,.3); }
.planner-tab.active {
    background: var(--grad-main); color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(138,43,226,.3);
}

/* ── Planner Panels ───────────────────────────────────────── */
.planner-panel { display: none; }
.planner-panel.active { display: block; }

/* ── Section header row ───────────────────────────────────── */
.panel-section-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 1.4rem; gap: 1rem; flex-wrap: wrap;
}
.panel-section-header h2 {
    font-family: 'Poppins', sans-serif; font-size: 1.25rem; font-weight: 700;
    color: var(--text-primary); display: flex; align-items: center; gap: .6rem;
}
.panel-section-header h2 i { color: var(--accent-teal); }

/* ── Add button ───────────────────────────────────────────── */
.btn-add-tracker {
    display: inline-flex; align-items: center; gap: 7px;
    padding: .55rem 1.2rem; border-radius: var(--r-md);
    background: var(--grad-main); border: none; color: #fff;
    font-family: 'Inter', sans-serif; font-size: .85rem; font-weight: 700;
    cursor: pointer; transition: var(--ease);
}
.btn-add-tracker:hover { transform: translateY(-2px); box-shadow: var(--glow); }

/* ── Empty state ──────────────────────────────────────────── */
.planner-empty {
    text-align: center; padding: 4rem 2rem;
    background: rgba(22,33,62,.4); border: 1px dashed rgba(42,250,223,.15);
    border-radius: var(--r-lg);
}
.planner-empty i   { font-size: 3rem; color: rgba(42,250,223,.15); display: block; margin-bottom: 1rem; }
.planner-empty h3  { font-family: 'Poppins', sans-serif; font-size: 1.15rem; color: var(--text-secondary); margin-bottom: .5rem; }
.planner-empty p   { color: var(--text-muted); font-size: .9rem; margin-bottom: 1.5rem; }

/* ════════════════════════════════════════════
   TRACKER CARDS
   ════════════════════════════════════════════ */
.tracker-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.2rem; }

.tracker-card {
    background: rgba(22,33,62,.75); border: 1px solid rgba(42,250,223,.1);
    border-radius: var(--r-lg); padding: 1.4rem 1.5rem;
    position: relative; overflow: hidden; transition: var(--ease);
}
.tracker-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.tracker-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.tracker-card.tc-teal::before   { background: var(--accent-teal); }
.tracker-card.tc-purple::before { background: var(--accent-purple); }
.tracker-card.tc-amber::before  { background: var(--accent-amber); }
.tracker-card.tc-pink::before   { background: var(--accent-pink); }
.tracker-card.tc-gold::before   { background: var(--accent-gold); }
.tracker-card.tc-blue::before   { background: var(--accent-blue); }

.tracker-card-top {
    display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 1rem;
}
.tracker-name { font-family: 'Poppins', sans-serif; font-size: 1.05rem; font-weight: 700; color: var(--text-primary); }
.tracker-desc { font-size: .78rem; color: var(--text-muted); margin-top: 3px; }
.tracker-card-actions { display: flex; gap: .5rem; flex-shrink: 0; }
.tcard-btn {
    width: 28px; height: 28px; border-radius: 8px; border: 1px solid rgba(42,250,223,.15);
    background: rgba(42,250,223,.06); color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--ease); font-size: .8rem;
}
.tcard-btn:hover { color: var(--text-primary); border-color: rgba(42,250,223,.4); }
.tcard-btn.del:hover { color: var(--accent-red); border-color: var(--accent-red); background: rgba(255,68,68,.1); }

/* Progress ring + number */
.tracker-progress-wrap { display: flex; align-items: center; gap: 1.2rem; margin-bottom: 1rem; }
.tracker-ring-wrap { position: relative; flex-shrink: 0; }
.tracker-ring { transform: rotate(-90deg); }
.tracker-ring-bg   { fill: none; stroke: rgba(42,250,223,.1); }
.tracker-ring-fill { fill: none; stroke-linecap: round; transition: stroke-dashoffset .6s cubic-bezier(.4,0,.2,1); }
.tc-teal   .tracker-ring-fill { stroke: var(--accent-teal); }
.tc-purple .tracker-ring-fill { stroke: var(--accent-purple); }
.tc-amber  .tracker-ring-fill { stroke: var(--accent-amber); }
.tc-pink   .tracker-ring-fill { stroke: var(--accent-pink); }
.tc-gold   .tracker-ring-fill { stroke: var(--accent-gold); }
.tc-blue   .tracker-ring-fill { stroke: var(--accent-blue); }
.tracker-ring-pct {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-family: 'Poppins', sans-serif; font-size: .8rem; font-weight: 800; color: var(--text-primary);
}

.tracker-nums { flex: 1; min-width: 0; }
.tracker-current-val {
    font-family: 'Poppins', sans-serif; font-size: 2rem; font-weight: 800;
    line-height: 1;
}
.tc-teal   .tracker-current-val { color: var(--accent-teal); }
.tc-purple .tracker-current-val { color: var(--accent-purple); }
.tc-amber  .tracker-current-val { color: var(--accent-amber); }
.tc-pink   .tracker-current-val { color: var(--accent-pink); }
.tc-gold   .tracker-current-val { color: var(--accent-gold); }
.tc-blue   .tracker-current-val { color: var(--accent-blue); }

.tracker-max-label { font-size: .8rem; color: var(--text-muted); margin-top: 3px; }
.tracker-unit      { font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-top: 2px; }

/* Stepper controls */
.tracker-stepper {
    display: flex; align-items: center; gap: .6rem; margin-bottom: .8rem;
}
.step-btn {
    width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(42,250,223,.2);
    background: rgba(42,250,223,.06); color: var(--text-primary);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--ease); font-size: 1rem; font-weight: 700;
}
.step-btn:hover { background: rgba(42,250,223,.18); border-color: var(--accent-teal); }
.step-btn.big { width: 44px; height: 44px; font-size: 1.2rem; }
.step-input {
    flex: 1; text-align: center; padding: .5rem;
    background: rgba(10,25,47,.8); border: 1px solid rgba(42,250,223,.15);
    border-radius: var(--r-md); color: var(--text-primary);
    font-family: 'Poppins', sans-serif; font-size: 1.1rem; font-weight: 700;
    outline: none; transition: var(--ease);
}
.step-input:focus { border-color: var(--accent-teal); }

.tracker-bar-wrap { height: 6px; background: rgba(42,250,223,.08); border-radius: 3px; overflow: hidden; }
.tracker-bar-fill  { height: 100%; border-radius: 3px; transition: width .5s ease; }
.tc-teal   .tracker-bar-fill { background: var(--accent-teal); }
.tc-purple .tracker-bar-fill { background: var(--accent-purple); }
.tc-amber  .tracker-bar-fill { background: var(--accent-amber); }
.tc-pink   .tracker-bar-fill { background: var(--accent-pink); }
.tc-gold   .tracker-bar-fill { background: var(--accent-gold); }
.tc-blue   .tracker-bar-fill { background: var(--accent-blue); }

/* ════════════════════════════════════════════
   CURRICULUM — SECTION FILTER
   ════════════════════════════════════════════ */
.section-filter-bar {
    display: flex; align-items: center; gap: .8rem;
    margin-bottom: 1.4rem; flex-wrap: wrap;
}
.filter-label { font-size: .82rem; color: var(--text-muted); font-weight: 600; white-space: nowrap; }
.section-filter-btns { display: flex; gap: .5rem; flex-wrap: wrap; }
.sfbtn {
    padding: .35rem .9rem; border-radius: 20px;
    border: 1px solid rgba(42,250,223,.2); background: rgba(42,250,223,.06);
    color: var(--text-secondary); font-size: .8rem; font-weight: 600;
    font-family: 'Inter', sans-serif; cursor: pointer; transition: var(--ease);
}
.sfbtn:hover  { color: var(--text-primary); border-color: rgba(42,250,223,.4); }
.sfbtn.active { background: var(--grad-main); color: #fff; border-color: transparent; }

/* ════════════════════════════════════════════
   CURRICULUM — SUBJECT CARDS
   ════════════════════════════════════════════ */
.subject-list { display: flex; flex-direction: column; gap: 1.2rem; }

.subject-card {
    background: rgba(22,33,62,.75); border: 1px solid rgba(42,250,223,.1);
    border-radius: var(--r-lg); overflow: hidden; transition: var(--ease);
}
.subject-card:hover { border-color: rgba(42,250,223,.2); }

.subject-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 1.3rem; cursor: pointer; gap: .8rem;
    background: rgba(10,25,47,.4);
}
.subject-header:hover { background: rgba(10,25,47,.65); }

.subject-header-left { display: flex; align-items: center; gap: .9rem; min-width: 0; }
.subject-color-dot {
    width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0;
}
.sdot-teal   { background: var(--accent-teal); box-shadow: 0 0 8px rgba(42,250,223,.5); }
.sdot-purple { background: var(--accent-purple); box-shadow: 0 0 8px rgba(138,43,226,.5); }
.sdot-amber  { background: var(--accent-amber); box-shadow: 0 0 8px rgba(255,154,60,.5); }
.sdot-pink   { background: var(--accent-pink); box-shadow: 0 0 8px rgba(255,46,99,.5); }
.sdot-gold   { background: var(--accent-gold); box-shadow: 0 0 8px rgba(255,215,0,.5); }
.sdot-blue   { background: var(--accent-blue); box-shadow: 0 0 8px rgba(79,195,247,.5); }

.subject-name {
    font-family: 'Poppins', sans-serif; font-size: 1rem; font-weight: 700; color: var(--text-primary);
}
.subject-meta { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin-top: 2px; }
.subject-section-badge {
    font-size: .68rem; font-weight: 700; padding: 2px 8px; border-radius: 20px;
    background: rgba(42,250,223,.12); color: var(--accent-teal);
    border: 1px solid rgba(42,250,223,.25);
}
.subject-progress-chip {
    font-size: .68rem; color: var(--text-muted);
}

.subject-header-right { display: flex; align-items: center; gap: .5rem; flex-shrink: 0; }
.subject-chevron { color: var(--text-muted); transition: var(--ease); font-size: .9rem; }
.subject-card.expanded .subject-chevron { transform: rotate(180deg); }

.subject-body { display: none; padding: .8rem 1.3rem 1.2rem; }
.subject-card.expanded .subject-body { display: block; }

/* Topic list inside subject */
.topic-list { display: flex; flex-direction: column; gap: .5rem; margin-bottom: .9rem; }

.topic-row {
    background: rgba(10,25,47,.5); border: 1px solid rgba(42,250,223,.08);
    border-radius: var(--r-md); overflow: hidden;
}
.topic-header {
    display: flex; align-items: center; gap: .7rem;
    padding: .65rem .9rem; cursor: pointer;
}
.topic-header:hover { background: rgba(42,250,223,.05); }

.topic-toggle-btn {
    width: 24px; height: 24px; border-radius: 6px;
    border: 1px solid rgba(42,250,223,.2); background: none;
    color: var(--text-muted); display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--ease); font-size: .7rem; flex-shrink: 0;
}
.topic-toggle-btn:hover { color: var(--text-primary); border-color: rgba(42,250,223,.4); }
.topic-row.topic-expanded .topic-toggle-btn { transform: rotate(90deg); }

.topic-check {
    width: 20px; height: 20px; border-radius: 50%;
    border: 2px solid rgba(42,250,223,.3); background: none;
    cursor: pointer; transition: var(--ease); flex-shrink: 0; display: flex;
    align-items: center; justify-content: center;
}
.topic-check:hover { border-color: var(--accent-teal); }
.topic-check.done  { background: var(--accent-teal); border-color: var(--accent-teal); }
.topic-check.done::after { content: '✓'; font-size: .65rem; color: #0a192f; font-weight: 900; }

.topic-name {
    flex: 1; font-size: .9rem; font-weight: 600; color: var(--text-primary); min-width: 0;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.topic-row.is-done .topic-name { color: var(--text-muted); text-decoration: line-through; }
.topic-notes-preview { font-size: .72rem; color: var(--text-muted); margin-left: auto; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px; }

.topic-actions { display: flex; gap: .4rem; flex-shrink: 0; }
.tact-btn {
    width: 24px; height: 24px; border-radius: 6px;
    border: 1px solid rgba(42,250,223,.12); background: none; color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--ease); font-size: .72rem;
}
.tact-btn:hover { color: var(--text-primary); border-color: rgba(42,250,223,.35); }
.tact-btn.del:hover { color: var(--accent-red); border-color: var(--accent-red); }

/* Subtopic list */
.subtopic-list { padding: .3rem .9rem .7rem 2.8rem; display: flex; flex-direction: column; gap: .35rem; }

.subtopic-row {
    display: flex; align-items: center; gap: .6rem;
    padding: .45rem .7rem;
    background: rgba(22,33,62,.5); border: 1px solid rgba(42,250,223,.06);
    border-radius: 8px;
}
.subtopic-check {
    width: 16px; height: 16px; border-radius: 4px;
    border: 2px solid rgba(42,250,223,.25); background: none;
    cursor: pointer; transition: var(--ease); flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.subtopic-check:hover { border-color: var(--accent-teal); }
.subtopic-check.done  { background: var(--accent-teal); border-color: var(--accent-teal); }
.subtopic-check.done::after { content: '✓'; font-size: .58rem; color: #0a192f; font-weight: 900; }

.subtopic-name {
    flex: 1; font-size: .82rem; color: var(--text-secondary); min-width: 0;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.subtopic-row.is-done .subtopic-name { color: var(--text-muted); text-decoration: line-through; }
.subtopic-section-chip {
    font-size: .6rem; padding: 1px 6px; border-radius: 10px;
    background: rgba(79,195,247,.1); color: var(--accent-blue);
    border: 1px solid rgba(79,195,247,.2); white-space: nowrap;
}
.subtopic-actions { display: flex; gap: .3rem; flex-shrink: 0; }

/* Add subtopic / topic row */
.btn-add-inner {
    display: inline-flex; align-items: center; gap: 6px;
    padding: .35rem .85rem; border-radius: 20px;
    border: 1px dashed rgba(42,250,223,.25); background: none;
    color: var(--text-muted); font-size: .78rem; font-weight: 600;
    font-family: 'Inter', sans-serif; cursor: pointer; transition: var(--ease);
}
.btn-add-inner:hover { color: var(--accent-teal); border-color: var(--accent-teal); background: rgba(42,250,223,.05); }

.subject-footer { display: flex; gap: .7rem; padding-top: .6rem; border-top: 1px solid rgba(42,250,223,.07); }

/* ════════════════════════════════════════════
   TIMETABLE GRID
   ════════════════════════════════════════════ */
.timetable-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: .7rem;
}
.timetable-day-col {
    display: flex; flex-direction: column; gap: .5rem;
}
.timetable-day-header {
    font-family: 'Poppins', sans-serif; font-size: .78rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-muted);
    padding: .5rem .6rem; text-align: center;
    background: rgba(22,33,62,.6); border-radius: 8px;
    border: 1px solid rgba(42,250,223,.08);
}
.timetable-day-header.has-slots { color: var(--accent-teal); border-color: rgba(42,250,223,.2); }

.timetable-slot {
    position: relative; border-radius: 10px; padding: .6rem .7rem;
    border: 1px solid; cursor: pointer; transition: var(--ease);
    overflow: hidden;
}
.timetable-slot:hover { transform: translateY(-2px); }
.timetable-slot::before {
    content: ''; position: absolute; top: 0; left: 0; width: 3px; bottom: 0; border-radius: 10px 0 0 10px;
}

.ts-teal   { background: rgba(42,250,223,.07);   border-color: rgba(42,250,223,.2);  }
.ts-teal::before   { background: var(--accent-teal); }
.ts-purple { background: rgba(138,43,226,.07);   border-color: rgba(138,43,226,.25); }
.ts-purple::before { background: var(--accent-purple); }
.ts-amber  { background: rgba(255,154,60,.07);   border-color: rgba(255,154,60,.25); }
.ts-amber::before  { background: var(--accent-amber); }
.ts-pink   { background: rgba(255,46,99,.07);    border-color: rgba(255,46,99,.25);  }
.ts-pink::before   { background: var(--accent-pink); }
.ts-gold   { background: rgba(255,215,0,.07);    border-color: rgba(255,215,0,.25);  }
.ts-gold::before   { background: var(--accent-gold); }
.ts-blue   { background: rgba(79,195,247,.07);   border-color: rgba(79,195,247,.25); }
.ts-blue::before   { background: var(--accent-blue); }

.slot-time    { font-size: .65rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.slot-subject { font-family: 'Poppins', sans-serif; font-size: .82rem; font-weight: 700; color: var(--text-primary); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.slot-section { font-size: .65rem; color: var(--text-muted); margin-top: 1px; }
.slot-room    { font-size: .62rem; color: var(--text-muted); margin-top: 2px; }
.slot-del-btn {
    position: absolute; top: 4px; right: 4px;
    width: 18px; height: 18px; border-radius: 4px;
    border: none; background: rgba(255,68,68,.15); color: rgba(255,68,68,.6);
    font-size: .6rem; cursor: pointer; display: none; align-items: center; justify-content: center;
    transition: var(--ease);
}
.timetable-slot:hover .slot-del-btn { display: flex; }
.slot-del-btn:hover { background: rgba(255,68,68,.35); color: #fff; }

.slot-add-btn {
    width: 100%; padding: .55rem; border-radius: 10px;
    border: 1px dashed rgba(42,250,223,.15); background: none;
    color: rgba(42,250,223,.3); font-size: .8rem; cursor: pointer; transition: var(--ease);
}
.slot-add-btn:hover { border-color: rgba(42,250,223,.4); color: var(--accent-teal); background: rgba(42,250,223,.05); }

/* ════════════════════════════════════════════
   PLANNER MODALS
   ════════════════════════════════════════════ */
.planner-modal {
    background: var(--card-dark); border: 1px solid rgba(42,250,223,.15);
    border-radius: var(--r-lg); width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
    animation: modalIn .25s ease;
}
.planner-modal-sm { max-width: 400px; }

@keyframes modalIn { from { opacity:0; transform:translateY(-20px) scale(.97); } to { opacity:1; transform:none; } }

.pmodal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 1.4rem; border-bottom: 1px solid rgba(42,250,223,.1);
}
.pmodal-header h3 {
    font-family: 'Poppins', sans-serif; font-size: 1.05rem; font-weight: 700;
    color: var(--text-primary); display: flex; align-items: center; gap: .6rem;
}
.pmodal-header h3 i { color: var(--accent-teal); }
.pmodal-close {
    width: 32px; height: 32px; border-radius: 8px; border: 1px solid rgba(42,250,223,.15);
    background: none; color: var(--text-muted); cursor: pointer; transition: var(--ease);
    display: flex; align-items: center; justify-content: center; font-size: .9rem;
}
.pmodal-close:hover { color: var(--accent-red); border-color: var(--accent-red); }

.pmodal-body { padding: 1.4rem; }

.form-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}

.pmodal-error {
    background: rgba(255,68,68,.1); border: 1px solid rgba(255,68,68,.3);
    color: var(--accent-red); border-radius: var(--r-md);
    padding: .6rem .9rem; font-size: .85rem; margin-bottom: .8rem;
    display: none;
}
.pmodal-error.show { display: block; }

.pmodal-actions {
    display: flex; gap: .8rem; justify-content: flex-end; margin-top: 1.4rem;
    padding-top: 1rem; border-top: 1px solid rgba(42,250,223,.08);
}
.btn-pcancel {
    padding: .55rem 1.2rem; border-radius: var(--r-md);
    border: 1px solid rgba(42,250,223,.2); background: none; color: var(--text-secondary);
    font-family: 'Inter', sans-serif; font-size: .88rem; font-weight: 600; cursor: pointer; transition: var(--ease);
}
.btn-pcancel:hover { border-color: rgba(42,250,223,.4); color: var(--text-primary); }
.btn-psave {
    display: inline-flex; align-items: center; gap: 7px;
    padding: .55rem 1.4rem; border-radius: var(--r-md);
    background: var(--grad-main); border: none; color: #fff;
    font-family: 'Inter', sans-serif; font-size: .88rem; font-weight: 700; cursor: pointer; transition: var(--ease);
}
.btn-psave:hover { transform: translateY(-2px); box-shadow: var(--glow); }
.btn-psave:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* ── Color picker ─────────────────────────────────────────── */
.color-picker { display: flex; gap: .5rem; align-items: center; }
.cpick {
    width: 22px; height: 22px; border-radius: 50%;
    cursor: pointer; transition: var(--ease);
    border: 2px solid transparent; outline: 2px solid transparent; outline-offset: 2px;
}
.cpick:hover   { transform: scale(1.2); }
.cpick.active  { outline-color: rgba(255,255,255,.6); transform: scale(1.15); }

/* ── Form textarea ────────────────────────────────────────── */
.form-textarea {
    min-height: 70px; resize: vertical;
}

/* req star */
.req { color: var(--accent-pink); }

/* ════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════ */
@media (max-width: 900px) {
    .timetable-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 650px) {
    .tracker-list { grid-template-columns: 1fr; }
    .timetable-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .planner-tabs { gap: .4rem; }
    .planner-tab { padding: .55rem .9rem; font-size: .8rem; }
    .subtopic-list { padding-left: 1.4rem; }
}
@media (max-width: 420px) {
    .timetable-grid { grid-template-columns: 1fr; }
}






/* ── Topic expand/collapse ── */
.subtopic-list { display: none; }
.topic-row.topic-expanded .subtopic-list { display: flex; }