/* PathwayPro EVALUATE - house styling (PathwayPro palette) */
:root {
  --verve: #253238;        /* primary: dark slate */
  --verve-dark: #1a2429;   /* darker slate */
  --verve-deep: #253238;
  --verve-light: #f0f2f2;  /* page background, sage tint */
  --tile: #e9eeee;
  --card: #ffffff;
  --ink: #253238;
  --muted: #64757a;
  --hairline: #d9e0e0;
  --gold: #cca300;
  --terra: #c76639;
  --rust: #983400;
  --sage: #a2b4b4;
  --silver: #b9b9c3;
  --danger: #983400;
  --amber: #c76639;
  --ok: #cca300;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(37, 50, 56, .08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--verve-light);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}

svg.icon { width: 18px; height: 18px; stroke: currentColor; stroke-width: 1.8; fill: none; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto; }

/* ---------- shell ---------- */
.shell { display: flex; min-height: 100vh; }

.side {
  width: 280px; flex: 0 0 280px;
  background: var(--verve);
  color: #f3f5ef;
  padding: 28px 22px;
  display: flex; flex-direction: column; gap: 26px;
  position: sticky; top: 0; height: 100vh;
}
.side .brand { display: flex; flex-direction: column; gap: 6px; }
.side .brand .sub { font-size: 12.5px; color: rgba(255,255,255,.7); letter-spacing: .3px; }

/* PathwayPro EVALUATE wordmark */
.pp-logo { display: flex; align-items: baseline; flex-wrap: wrap; font-weight: 800; letter-spacing: -.01em; line-height: 1.1; }
.pp-logo .pp-outline {
  color: transparent;
  -webkit-text-stroke: 1.3px var(--silver);
  text-stroke: 1.3px var(--silver);
  font-weight: 800;
}
.pp-logo .pp-solid { font-weight: 800; }
.pp-logo .pp-tm { font-size: .42em; font-weight: 800; align-self: flex-start; margin: .18em .12em 0 .05em; }
.pp-logo .pp-eval { font-weight: 800; letter-spacing: .01em; }
.pp-logo.on-dark { color: #fff; font-size: 21px; }
.pp-logo.on-dark .pp-outline { -webkit-text-stroke-color: var(--silver); }
.pp-logo.on-light { color: var(--verve-deep); font-size: 26px; justify-content: center; }
.pp-logo.on-light .pp-outline { -webkit-text-stroke-color: var(--silver); }

.steps { display: flex; flex-direction: column; gap: 4px; }
.step {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 12px; border-radius: 10px;
  color: rgba(255,255,255,.82); cursor: pointer;
  border: 1px solid transparent; background: transparent;
  width: 100%; text-align: left; font-size: 14px; font-family: inherit;
}
.step:hover { background: rgba(255,255,255,.08); }
.step.active { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.18); color: #fff; font-weight: 650; }
.step.done .stepnum { background: #fff; color: var(--verve-dark); }
.step .stepnum {
  width: 24px; height: 24px; border-radius: 50%;
  border: 1.6px solid rgba(255,255,255,.6);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex: 0 0 auto;
}
.step.locked { opacity: .45; cursor: not-allowed; }

.side .foot { margin-top: auto; font-size: 12px; color: rgba(255,255,255,.65); line-height: 1.5; }

.main { flex: 1; padding: 34px 40px 80px; max-width: 1060px; }

.pagehead { margin-bottom: 22px; }
.pagehead h1 { font-size: 22px; font-weight: 800; letter-spacing: .2px; }
.pagehead p { color: var(--muted); margin-top: 4px; max-width: 68ch; }

/* ---------- cards & fields ---------- */
.card {
  background: var(--card); border: 1px solid var(--hairline);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px; margin-bottom: 18px;
}
.card h2 { font-size: 15px; font-weight: 750; margin-bottom: 14px; display: flex; align-items: center; gap: 9px; color: var(--verve-deep); }

.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.field label { display: block; font-size: 12.5px; font-weight: 700; color: var(--muted); margin-bottom: 5px; letter-spacing: .2px; }
.field input[type="text"], .field input[type="number"], .field input[type="date"],
.field input[type="email"], .field input[type="password"],
.field select, .field textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--hairline);
  border-radius: 9px; font-size: 14px; font-family: inherit; color: var(--ink);
  background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--verve); box-shadow: 0 0 0 3px rgba(95,111,82,.15);
}
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* segmented control */
.seg { display: inline-flex; border: 1px solid var(--hairline); border-radius: 10px; overflow: hidden; background: #fff; }
.seg button {
  padding: 9px 16px; border: none; background: transparent; font-size: 14px;
  cursor: pointer; color: var(--muted); font-family: inherit; border-right: 1px solid var(--hairline);
}
.seg button:last-child { border-right: none; }
.seg button.on { background: var(--gold); color: var(--verve-deep); font-weight: 750; }

/* pills for grades */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  padding: 8px 15px; border-radius: 999px; border: 1px solid var(--hairline);
  background: #fff; cursor: pointer; font-size: 14px; font-family: inherit; color: var(--ink);
}
.pill:hover { border-color: var(--verve); }
.pill.on { background: var(--gold); border-color: var(--gold); color: var(--verve-deep); font-weight: 750; }

/* scope banner */
.scope {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--tile); border: 1px solid var(--hairline);
  border-radius: 10px; padding: 13px 15px; margin-bottom: 16px; font-size: 13.5px;
}
.scope .icon { margin-top: 2px; color: var(--verve-dark); }
.scope strong { color: var(--verve-deep); }

/* topics */
.topic { border: 1px solid var(--hairline); border-radius: 10px; margin-bottom: 10px; overflow: hidden; background: #fff; }
.topic-head {
  display: flex; align-items: center; gap: 10px; padding: 11px 13px; cursor: pointer;
}
.topic-head:hover { background: #fafbf7; }
.topic-head .t-term { font-size: 11px; font-weight: 700; color: var(--verve-dark); background: var(--tile); border-radius: 6px; padding: 2px 8px; letter-spacing: .3px; }
.topic-head .t-name { font-weight: 650; font-size: 14px; flex: 1; }
.topic-subs { border-top: 1px dashed var(--hairline); padding: 9px 13px 11px 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 5px 18px; }
.topic-subs label { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; cursor: pointer; color: var(--ink); }
.topic.checked { border-color: var(--verve); background: #fcfdfb; }

input[type="checkbox"] { accent-color: var(--verve); width: 15px; height: 15px; margin-top: 2px; cursor: pointer; }

.sacai-box { background: #f7f8f4; border: 1px solid var(--hairline); border-radius: 10px; padding: 14px 16px; margin-top: 4px; }
.sacai-box h3 { font-size: 13px; font-weight: 750; color: var(--verve-deep); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.sacai-box table { width: 100%; border-collapse: collapse; font-size: 13px; }
.sacai-box td, .sacai-box th { padding: 4px 8px; text-align: left; border-bottom: 1px solid var(--hairline); }
.sacai-box th { color: var(--muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: .4px; }
.sacai-box td.num, .sacai-box th.num { text-align: right; }

/* structure builder */
.qrow {
  border: 1px solid var(--hairline); border-radius: 12px; background: #fff;
  padding: 14px 16px; margin-bottom: 12px;
}
.qrow-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.qrow-head .qnum {
  width: 34px; height: 34px; border-radius: 9px; background: var(--verve);
  color: #fff; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; font-size: 14px;
}
.qrow-head .spacer { flex: 1; }
.qrow .grid { margin-bottom: 10px; }
.iconbtn {
  border: 1px solid var(--hairline); background: #fff; border-radius: 8px;
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--muted);
}
.iconbtn:hover { color: var(--ink); border-color: var(--verve); }
.iconbtn.danger:hover { color: var(--danger); border-color: var(--danger); }

.marks-meter { display: flex; align-items: center; gap: 14px; padding: 12px 16px; border-radius: 10px; background: var(--tile); border: 1px solid var(--hairline); margin-bottom: 16px; }
.marks-meter .bar { flex: 1; height: 8px; background: #fff; border-radius: 999px; overflow: hidden; border: 1px solid var(--hairline); }
.marks-meter .bar i { display: block; height: 100%; background: var(--gold); border-radius: 999px; transition: width .25s; }
.marks-meter.over .bar i { background: var(--rust); }
.marks-meter .nums { font-size: 13.5px; font-weight: 700; color: var(--verve-deep); white-space: nowrap; }
.marks-meter.over .nums { color: var(--danger); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--verve); color: #fff; border: none; border-radius: 10px;
  padding: 11px 20px; font-size: 14.5px; font-weight: 650; cursor: pointer; font-family: inherit;
}
.btn:hover { background: var(--verve-dark); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.ghost { background: #fff; color: var(--verve-deep); border: 1px solid var(--hairline); }
.btn.ghost:hover { border-color: var(--verve); background: #fff; }
.btn.small { padding: 8px 14px; font-size: 13px; }

.navrow { display: flex; justify-content: space-between; margin-top: 24px; }

/* review + generation */
.sumline { display: flex; padding: 7px 0; border-bottom: 1px dashed var(--hairline); font-size: 14px; }
.sumline .k { width: 190px; color: var(--muted); font-weight: 650; flex: 0 0 190px; }
.sumline .v { flex: 1; }

.gen-status { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.gen-item { display: flex; align-items: center; gap: 11px; padding: 10px 14px; border: 1px solid var(--hairline); border-radius: 10px; background: #fff; font-size: 14px; }
.gen-item .state { margin-left: auto; font-size: 12.5px; font-weight: 700; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.gen-item.working .state { color: var(--amber); }
.gen-item.done .state { color: var(--ok); }
.gen-item.error .state { color: var(--danger); }

.spin { width: 14px; height: 14px; border: 2px solid var(--hairline); border-top-color: var(--gold); border-radius: 50%; animation: vspin .8s linear infinite; }
@keyframes vspin { to { transform: rotate(360deg); } }

/* preview */
.preview-q { border: 1px solid var(--hairline); border-radius: 12px; background: #fff; padding: 18px 20px; margin-bottom: 14px; }
.preview-q .pq-head { display: flex; align-items: baseline; gap: 10px; border-bottom: 2px solid var(--ink); padding-bottom: 6px; margin-bottom: 10px; }
.preview-q .pq-head h3 { font-size: 15px; font-weight: 800; }
.preview-q .pq-head .pq-marks { margin-left: auto; font-weight: 700; font-size: 13.5px; }
.preview-q .pq-intro { font-style: italic; color: var(--muted); font-size: 13.5px; margin-bottom: 10px; }
.pq-item { display: flex; gap: 10px; padding: 6px 0; font-size: 14px; }
.pq-item .no { font-weight: 700; color: var(--verve-deep); flex: 0 0 44px; }
.pq-item .body { flex: 1; white-space: pre-wrap; }
.pq-item .m { color: var(--muted); font-size: 13px; white-space: nowrap; }
.pq-item .opts { margin-top: 5px; padding-left: 4px; color: var(--ink); }
.pq-item .opts div { padding: 1.5px 0; }
.pq-edit { width: 100%; margin-top: 6px; font-family: inherit; font-size: 13.5px; padding: 8px 10px; border: 1px solid var(--verve); border-radius: 8px; min-height: 70px; }
.pq-tools { display: flex; gap: 8px; margin-top: 10px; }
.memo-tag { background: var(--tile); border-radius: 6px; padding: 1px 8px; font-size: 11.5px; font-weight: 700; color: var(--verve-dark); letter-spacing: .3px; }
.pq-memo { border-top: 1px dashed var(--hairline); margin-top: 10px; padding-top: 10px; font-size: 13px; color: var(--muted); }
.pq-memo.hidden { display: none; }

.match-table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 13.5px; }
.match-table th, .match-table td { border: 1px solid var(--hairline); padding: 6px 10px; text-align: left; vertical-align: top; }
.match-table th { background: var(--tile); font-size: 12px; }

/* export */
.dl-row { display: flex; gap: 14px; flex-wrap: wrap; }
.dl-card {
  flex: 1; min-width: 240px; border: 1px solid var(--hairline); border-radius: 12px;
  padding: 18px; background: #fff; display: flex; flex-direction: column; gap: 8px;
}
.dl-card h3 { font-size: 14.5px; font-weight: 750; display: flex; align-items: center; gap: 9px; color: var(--verve-deep); }
.dl-card p { font-size: 13px; color: var(--muted); flex: 1; }

/* staff manager */
.staff-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 8px; }
.staff-chip { display: inline-flex; align-items: center; gap: 7px; background: var(--tile); border: 1px solid var(--hairline); border-radius: 999px; padding: 4px 11px; font-size: 13px; }
.staff-chip button { border: none; background: none; cursor: pointer; color: var(--muted); font-size: 15px; line-height: 1; padding: 0; }
.staff-chip button:hover { color: var(--danger); }

.toast {
  position: fixed; bottom: 24px; right: 24px; background: var(--ink); color: #fff;
  border-radius: 10px; padding: 12px 18px; font-size: 14px; box-shadow: var(--shadow);
  opacity: 0; transform: translateY(8px); transition: all .25s; pointer-events: none; z-index: 50;
}
.toast.show { opacity: 1; transform: none; }

.hidden { display: none !important; }

.pq-memo .tick { color: #c00000; font-weight: 800; }

/* download-button busy state: spinner + indeterminate loading bar */
.busy-bar {
  width: 74px; height: 4px; border-radius: 999px; overflow: hidden;
  background: rgba(255,255,255,.28); display: inline-block;
}
.btn.ghost .busy-bar { background: var(--hairline); }
.busy-bar i {
  display: block; width: 45%; height: 100%; border-radius: 999px;
  background: var(--gold); animation: busyslide 1.1s ease-in-out infinite;
}
@keyframes busyslide {
  0% { margin-left: -45%; }
  100% { margin-left: 100%; }
}
button[data-busy] { opacity: .85; cursor: progress; }

/* ---------- POA ---------- */
.poa-float {
  position: fixed; right: 18px; top: 90px; width: 300px; max-height: calc(100vh - 120px);
  background: var(--card); border: 1px solid var(--hairline); border-radius: 14px;
  box-shadow: var(--shadow); z-index: 40; display: flex; flex-direction: column;
}
.poa-float-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 14px; border-bottom: 1px solid var(--hairline);
  font-size: 11.5px; font-weight: 800; letter-spacing: .08em; color: var(--verve-deep);
}
.poa-float-head button { border: none; background: none; font-size: 18px; color: var(--muted); cursor: pointer; line-height: 1; }
.poa-float-body { padding: 12px 14px; overflow-y: auto; }
.poa-float .pf-sub { font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.poa-task {
  border: 1px solid var(--hairline); border-radius: 10px; padding: 9px 11px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 9px;
}
.poa-task.current { border-color: var(--gold); background: #fdf8e7; }
.poa-task .pt-main { flex: 1; min-width: 0; }
.poa-task .pt-type { font-size: 12.5px; font-weight: 700; color: var(--verve-deep); }
.poa-task .pt-meta { font-size: 11.5px; color: var(--muted); }
.poa-task .pt-kind {
  font-size: 9.5px; font-weight: 800; letter-spacing: .05em; border-radius: 5px; padding: 2px 6px;
  background: var(--tile); color: var(--verve-dark); text-transform: uppercase; flex: 0 0 auto;
}
.poa-task .pt-kind.exam { background: var(--verve); color: #fff; }
.poa-task .pt-kind.test { background: var(--gold); color: var(--verve-deep); }
.poa-task button.pt-build {
  border: 1px solid var(--hairline); background: #fff; border-radius: 7px; padding: 4px 9px;
  font-size: 11.5px; font-weight: 700; color: var(--verve-deep); cursor: pointer; flex: 0 0 auto;
}
.poa-task button.pt-build:hover { border-color: var(--gold); }
@media (max-width: 1180px) { .poa-float { display: none; } }

.poa-subject { margin-bottom: 18px; }
.poa-subject h3 { font-size: 15.5px; font-weight: 800; color: var(--verve-deep); margin-bottom: 2px; }
.poa-subject .promo { font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.poa-table { width: 100%; border-collapse: collapse; }
.poa-table th {
  text-align: left; font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted); padding: 6px 8px; border-bottom: 2px solid var(--hairline);
}
.poa-table td { padding: 6px 8px; border-bottom: 1px solid var(--hairline); font-size: 13.5px; vertical-align: middle; }
.poa-table td input[type="text"] {
  width: 100%; border: 1px solid transparent; border-radius: 7px; padding: 5px 8px;
  font: inherit; font-size: 13px; background: transparent;
}
.poa-table td input[type="number"] { width: 74px; border: 1px solid transparent; border-radius: 7px; padding: 5px 8px; font: inherit; font-size: 13px; background: transparent; }
.poa-table td input:hover, .poa-table td input:focus { border-color: var(--hairline); background: #fff; outline: none; }
.poa-table .rowbtn { border: none; background: none; color: var(--muted); cursor: pointer; font-size: 15px; padding: 2px 5px; }
.poa-table .rowbtn:hover { color: var(--rust); }
.poa-addrow { border: 1px dashed var(--hairline); background: none; border-radius: 8px; padding: 5px 12px; font-size: 12.5px; color: var(--muted); cursor: pointer; margin-top: 6px; }
.poa-addrow:hover { color: var(--verve-deep); border-color: var(--sage); }

.norm-chip {
  display: inline-flex; align-items: center; gap: 6px; margin-left: 8px;
  font-size: 11.5px; font-weight: 700; color: var(--verve-dark);
  background: var(--tile); border-radius: 7px; padding: 2px 8px;
}
.norm-chip button {
  border: none; background: var(--gold); color: var(--verve-deep); font-size: 10.5px; font-weight: 800;
  border-radius: 5px; padding: 1px 7px; cursor: pointer;
}

/* task builder */
.tb-section { border: 1px solid var(--hairline); border-radius: 10px; padding: 12px 15px; margin-bottom: 10px; }
.tb-section .ts-head { display: flex; justify-content: space-between; font-weight: 750; color: var(--verve-deep); font-size: 14px; }
.tb-section .ts-desc { font-size: 13px; color: var(--ink); margin-top: 4px; white-space: pre-wrap; }
.tb-rubric { width: 100%; border-collapse: collapse; margin-top: 8px; }
.tb-rubric th, .tb-rubric td { border: 1px solid var(--hairline); padding: 6px 8px; font-size: 12.5px; text-align: left; vertical-align: top; }
.tb-rubric th { background: var(--tile); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.tb-brief { background: var(--tile); border-radius: 10px; padding: 12px 15px; font-size: 13.5px; white-space: pre-wrap; margin-bottom: 10px; }

/* ---------- toggle switch ---------- */
.toggle-row { display: flex; align-items: flex-start; gap: 14px; }
.switch {
  width: 46px; height: 26px; border-radius: 999px; border: 1px solid var(--hairline);
  background: #e4e9e9; cursor: pointer; position: relative; flex: 0 0 auto; padding: 0;
  transition: background .2s, border-color .2s; margin-top: 2px;
}
.switch .knob {
  position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(37,50,56,.3); transition: left .2s;
}
.switch.on { background: var(--gold); border-color: var(--gold); }
.switch.on .knob { left: 22px; }

.pp-slot {
  display: flex; align-items: center; gap: 14px;
  border: 1px solid var(--hairline); border-radius: 10px; background: #fff;
  padding: 12px 15px; margin-bottom: 8px;
}
.pp-slot .qnum {
  width: 30px; height: 30px; border-radius: 8px; background: var(--verve);
  color: #fff; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; flex: 0 0 auto;
}
.pp-slot .pp-main { flex: 1; }
.pp-slot .pp-label { font-weight: 700; font-size: 14px; color: var(--verve-deep); }
.pp-slot .pp-note { font-size: 12px; color: var(--muted); margin-top: 2px; }
.pp-slot .pp-marks { font-weight: 800; font-size: 14px; color: var(--verve-deep); background: var(--tile); border-radius: 8px; padding: 5px 12px; white-space: nowrap; }

/* ---------- login ---------- */
.login-overlay {
  position: fixed; inset: 0; background: var(--verve);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.login-card {
  background: var(--card); border-radius: 16px; box-shadow: 0 24px 60px rgba(0,0,0,.25);
  padding: 34px 32px; width: 360px; max-width: calc(100vw - 40px);
  display: flex; flex-direction: column; gap: 14px;
}
.login-brand { font-size: 22px; font-weight: 800; letter-spacing: .4px; color: var(--verve-deep); text-align: center; }
.login-sub { font-size: 13px; color: var(--muted); text-align: center; margin-top: -10px; margin-bottom: 8px; }
.login-err {
  background: #f6ebe4; border: 1px solid #d9b39e; color: var(--rust);
  border-radius: 9px; padding: 9px 12px; font-size: 13px;
}
.login-brand-mark { margin-bottom: 2px; }

/* ---------- user box / library ---------- */
.user-box {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px; padding: 9px 13px; font-size: 13.5px; color: #fff; font-weight: 650;
}
.user-box button {
  margin-left: auto; border: none; background: none; color: rgba(255,255,255,.75);
  cursor: pointer; display: inline-flex; padding: 2px;
}
.user-box button:hover { color: #fff; }

.lib-row {
  display: flex; align-items: center; gap: 14px;
  border: 1px solid var(--hairline); border-radius: 12px; background: #fff;
  padding: 14px 16px; margin-bottom: 10px;
}
.lib-row .lib-main { flex: 1; min-width: 0; }
.lib-row .lib-title { font-weight: 750; font-size: 14.5px; color: var(--verve-deep); }
.lib-row .lib-meta { font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.lib-row .lib-actions { display: flex; gap: 8px; }
.lib-empty { color: var(--muted); font-size: 14px; padding: 8px 2px; }

@media (max-width: 900px) {
  .shell { flex-direction: column; }
  .side { width: 100%; height: auto; position: static; flex-direction: column; }
  .main { padding: 22px 18px 60px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .topic-subs { grid-template-columns: 1fr; }
}