:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #1f2433;
  --muted: #6b7280;
  --primary: #4f5bd5;
  --primary-dark: #3a44b0;
  --accent-algebra: #4f5bd5;
  --accent-geometriya: #16a394;
  --border: #e5e7f0;
  --shadow: 0 4px 16px rgba(31, 36, 51, 0.06);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary-dark);
}

.site-nav a {
  margin-left: 24px;
  font-weight: 600;
  color: var(--muted);
}

.site-nav a:hover { color: var(--primary); }
.site-nav a.active { color: var(--primary); }

@media (max-width: 860px) {
  .site-nav a { margin-left: 16px; }
}

@media (max-width: 640px) {
  .site-nav { display: none; }
}

.page-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(31, 36, 51, 0.1);
}

.grid {
  display: grid;
  gap: 20px;
}

/* ---------- Bosh sahifa: sinflar (guruhlarga ajratilgan) ---------- */
#grades-grid { max-width: 1080px; margin: 28px auto 0; display: flex; flex-direction: column; gap: 36px; }

.grade-group-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 14px; flex-wrap: wrap; }
.grade-group-title { font-weight: 800; font-size: 1.15rem; }
.grade-group-sub { color: var(--muted); font-size: 0.9rem; margin-top: 2px; }
.grade-group-link { color: var(--primary); font-weight: 700; font-size: 0.9rem; }
.grade-group-link:hover { color: var(--primary-dark); }

.grade-tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }

.grade-tile {
  display: flex; align-items: center; gap: 14px; padding: 16px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.grade-tile:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(31, 36, 51, 0.1); border-color: #c9cef5; }

.grade-tile-num {
  flex: 0 0 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.5rem; color: #fff;
  background: linear-gradient(135deg, #6872e0, var(--primary-dark));
}
.grade-tile--primary .grade-tile-num { background: linear-gradient(135deg, #2bbfa9, #12897c); }

.grade-tile-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.grade-tile-name { font-weight: 800; font-size: 1.02rem; }
.grade-tile-subj { font-size: 0.8rem; font-weight: 600; color: var(--primary-dark); line-height: 1.35; }
.grade-tile--primary .grade-tile-subj { color: #12897c; }
.grade-tile-meta { color: var(--muted); font-size: 0.78rem; white-space: nowrap; }
.grade-tile-meta b { color: var(--accent-geometriya); font-weight: 700; }

@media (max-width: 960px) {
  .grade-tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .grade-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .grade-tile { flex-direction: column; align-items: flex-start; gap: 10px; padding: 14px; }
  .grade-tile-num { flex: none; width: 44px; height: 44px; font-size: 1.3rem; border-radius: 12px; }
  .grade-tile-body { width: 100%; }
}

.primary-promo-card {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: linear-gradient(135deg, #eef0fd, #e6f7f4);
}

.primary-promo-text p {
  color: var(--muted);
  margin: 0;
  max-width: 560px;
}

.primary-promo-arrow {
  font-size: 1.6rem;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.primary-promo-card:hover .primary-promo-arrow { transform: translateX(4px); }

@media (max-width: 640px) {
  .primary-promo-card { flex-direction: column; align-items: flex-start; text-align: left; }
}

/* ---------- Bosh sahifa: hero, ko'rgazma, qadriyatlar, footer ---------- */

.hero-section {
  padding: 64px 24px 56px;
}

.hero-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 16px;
}

.hero-text p {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 480px;
  margin: 0 0 28px;
}

.hero-cta {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.hero-cta:hover { background: var(--primary-dark); }

.hero-illustration {
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 800px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-text p { margin-left: auto; margin-right: auto; }
  .hero-illustration { margin-top: 20px; }
}

.section-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.7rem;
  font-weight: 800;
  margin: 0 0 8px;
}

.section-sub {
  color: var(--muted);
  font-size: 1rem;
  margin: 0 0 32px;
  max-width: 560px;
}

.showcase-section, .grades-section, .values-section {
  padding: 24px 24px 64px;
}

.showcase-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 800px) {
  .showcase-grid { grid-template-columns: 1fr; }
}

.showcase-card { padding: 24px; }

.showcase-icon {
  width: 68px;
  height: 68px;
  border-radius: 14px;
  background: #eef0fb;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.showcase-card h3 { font-size: 1.1rem; margin: 0 0 6px; }
.showcase-card p { color: var(--muted); font-size: 0.9rem; margin: 0 0 14px; }

.showcase-meta {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  margin-top: 10px;
}

/* ---------- Bosh sahifa: jonli mini-ko'rgazmalar ---------- */
.demo-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.demo-card:hover { transform: translateY(-3px); }
.demo-stage { position: relative; padding: 14px 14px 12px; border-bottom: 1px solid var(--border); }
.demo-stage--indigo { background: linear-gradient(160deg, #eef0fd, #f7f8ff); }
.demo-stage--teal { background: linear-gradient(160deg, #e3f6f2, #f5fbfa); }
.demo-stage--amber { background: linear-gradient(160deg, #fff4dc, #fffaf0); }
.demo-hint {
  position: absolute; top: 12px; left: 12px; z-index: 1;
  padding: 3px 9px; border-radius: 999px; background: #fff; box-shadow: 0 2px 8px rgba(31,36,51,.1);
  font-size: 0.72rem; font-weight: 700; color: var(--primary); transition: opacity .3s ease;
}
.demo-hint::before { content: "👆 "; }
.is-touched .demo-hint { opacity: 0; }
.demo-svg { display: block; width: 100%; height: 150px; user-select: none; -webkit-user-select: none; }
.demo-svg--drag { cursor: grab; touch-action: none; }
.demo-svg--drag:active { cursor: grabbing; }
.demo-svg:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 10px; }
.demo-controls { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 6px; min-height: 34px; }
.demo-btn {
  width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border); background: #fff;
  font: inherit; font-size: 1.2rem; font-weight: 800; color: var(--primary); cursor: pointer;
  transition: border-color .12s ease, transform .08s ease;
}
.demo-btn:hover { border-color: var(--primary); }
.demo-btn:active { transform: scale(.94); }
.demo-readout { min-width: 120px; text-align: center; font-weight: 800; font-size: 0.92rem; color: var(--text); }
.demo-readout--big { min-width: 0; font-size: 1.5rem; color: var(--primary-dark); font-variant-numeric: tabular-nums; }
.demo-tag { padding: 3px 10px; border-radius: 999px; background: #fff; font-size: 0.78rem; font-weight: 700; color: #0f6f63; }
.is-solved .demo-readout { color: #1f9d55; }
.is-solved .demo-svg { filter: drop-shadow(0 0 10px rgba(31,157,85,.25)); }

.frac-wrap { display: flex; align-items: center; justify-content: center; gap: 22px; height: 150px; }
.frac-bar { display: flex; gap: 4px; width: 62%; height: 54px; }
.frac-seg { flex: 1; border: 2px solid #e0a21e; border-radius: 8px; background: #fff; cursor: pointer; padding: 0; transition: background .15s ease, transform .1s ease; }
.frac-seg:hover { transform: translateY(-2px); }
.frac-seg.on { background: #f0b429; }
.frac-big { display: inline-flex; flex-direction: column; align-items: center; font-family: 'Cambria Math', 'Times New Roman', serif; font-size: 2rem; line-height: 1.1; color: #8a6100; }
.frac-big span:first-child { border-bottom: 3px solid currentColor; padding: 0 6px; }

.demo-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.demo-body h3 { font-size: 1.1rem; margin: 0 0 6px; }
.demo-body p { color: var(--muted); font-size: 0.9rem; margin: 0 0 14px; }
.demo-foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.demo-foot .showcase-meta { margin-top: 0; }
.demo-link { font-weight: 800; font-size: 0.88rem; color: var(--primary); }
.demo-link:hover { color: var(--primary-dark); }

.grades-header {
  max-width: 1080px;
  margin: 0 auto;
}

.values-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.values-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}

@media (max-width: 800px) {
  .values-grid { grid-template-columns: 1fr; }
}

.value-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: 12px;
  background: #eef0fb;
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-item h4 { font-size: 1.05rem; margin: 0 0 8px; }
.value-item p { color: var(--muted); font-size: 0.9rem; margin: 0; }

.site-footer { padding: 32px 24px; }

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-logo { font-weight: 800; color: var(--primary-dark); }

.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.footer-links a:hover { color: var(--primary); }

.footer-copy { color: var(--muted); font-size: 0.8rem; }

.subject-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 24px 0 8px;
  border-bottom: 1px solid var(--border);
}

.subject-tab {
  padding: 10px 18px;
  font-weight: 700;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--muted);
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  margin-bottom: -1px;
}

.subject-tab:hover { color: var(--primary); }

.subject-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.subject-heading {
  font-size: 1.4rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

.topic-list { list-style: none; margin: 24px 0 0; padding: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
.topic-row { display: flex; align-items: baseline; gap: 12px; padding: 13px 18px; border-top: 1px solid var(--border); transition: background 0.1s ease; }
.topic-row:first-child { border-top: 0; }
.topic-row:hover { background: #fafbff; }
.topic-row-num { flex: 0 0 34px; font-weight: 700; color: #9ca3af; font-variant-numeric: tabular-nums; }
.topic-row-title { flex: 1 1 auto; min-width: 0; font-weight: 600; line-height: 1.45; }
.topic-row-title:hover { color: var(--primary); }
.topic-row-page { margin-left: 10px; font-size: 0.78rem; font-weight: 500; color: #9ca3af; white-space: nowrap; }
.topic-row-actions { flex: 0 0 auto; display: flex; gap: 6px; align-self: center; }
.topic-btn { padding: 5px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--primary); font-weight: 700; font-size: 0.78rem; white-space: nowrap; transition: border-color 0.1s ease, background 0.1s ease; }
.topic-btn:hover { border-color: var(--primary); }
.topic-btn--primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.topic-btn--primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.gallery-grade { margin-top: 30px; }
.gallery-grade-title { font-size: 1.35rem; margin: 0 0 4px; }
.gallery-grade-title a:hover { color: var(--primary); }
.gallery-subject { font-weight: 800; font-size: 0.95rem; color: var(--primary-dark); margin: 14px 0 0; }
.gallery-list { margin-top: 10px; }
.topic-list-foot { text-align: center; color: #9ca3af; font-size: 0.82rem; font-weight: 600; margin-top: 16px; }
@media (max-width: 640px) {
  .topic-row { flex-wrap: wrap; padding: 12px 14px; gap: 6px 8px; }
  .topic-row-num { flex-basis: 34px; }
  .topic-row-title { flex-basis: calc(100% - 42px); }
  .topic-row-actions { margin-left: 42px; }
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.topic-card {
  padding: 20px;
}

.topic-card-title {
  font-weight: 700;
  margin-bottom: 10px;
}

.badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  margin-right: 6px;
}

.badge:last-child { margin-right: 0; }

.badge-interactive {
  background: #e6f7f4;
  color: var(--accent-geometriya);
}

.badge-lecture {
  background: #eef0fb;
  color: var(--primary-dark);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

/* bilinar-bilinmas to'rtburchak tugmalar */
.crumb {
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-weight: 600;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}
a.crumb:hover { border-color: var(--primary); color: var(--primary); background: #f5f6fe; }
.crumb--current { border-color: transparent; background: none; padding-left: 2px; color: var(--text); }
.crumb-sep { color: #c3c7d4; }

#topic-title {
  font-size: 2rem;
  margin: 0 0 6px;
}

.topic-page-tag {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 28px;
}

.content-block {
  margin-bottom: 40px;
  scroll-margin-top: 76px; /* #interaktiv kabi havola bilan kelganda — yopishgan bosqichlar paneli ostida qolmasin */
}

/* mavzu bosqichlari: Nazariya → Interaktiv panel → Test — sarlavha ostiga yopishib turadi */
.topic-steps {
  position: sticky;
  top: 0;
  z-index: 9;
  display: flex;
  gap: 8px;
  margin: 0 0 20px;
  padding: 10px 0;
  background: var(--bg);
  overflow-x: auto;
  scrollbar-width: none;
}
.topic-steps::-webkit-scrollbar { display: none; }
.topic-step {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 10px 18px 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: border-color .15s, color .15s, box-shadow .15s;
}
.topic-step b {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}
.topic-step:hover { border-color: var(--primary); color: var(--primary); }
.topic-step.active {
  border-color: var(--primary);
  color: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(79, 91, 213, 0.18);
}
.topic-step.active b { background: var(--primary); color: #fff; }
@media (max-width: 520px) {
  /* telefonda uchala bosqich ekranga sig'adi: teng kenglik, kerak bo'lsa ikki qator */
  .topic-steps { gap: 6px; }
  .topic-step { flex: 1 1 0; min-width: 0; justify-content: center; padding: 8px 6px; gap: 6px; font-size: 0.85rem; line-height: 1.2; text-align: left; }
  .topic-step b { flex: 0 0 auto; width: 20px; height: 20px; font-size: 0.75rem; }
}

.step-next { display: flex; justify-content: center; margin-top: 24px; }
.step-next-btn {
  padding: 12px 22px;
  border: none;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.step-next-btn:hover { background: var(--primary-dark); }

.content-block h3 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 14px;
}

.lecture-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

/* ma'ruza sahifasi (maruza/*.html) iframe ichida — tashqi quti va ichki chegarasiz, ortiqcha bo'sh joysiz */
.lecture-box:has(> iframe) { padding: 0; border: none; background: transparent; }
.lecture-box > iframe.embed-frame { display: block; border: 1px solid var(--border); }

.lecture-section {
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.lecture-section:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.lecture-section-title {
  font-size: 1rem;
  margin: 0 0 8px;
  color: var(--text);
}

.lecture-rule {
  background: #eef0fb;
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 10px 0;
}

.lecture-rule strong {
  color: var(--primary-dark);
}

.lecture-example {
  background: #f6f7fb;
  border-radius: 8px;
  padding: 10px 14px;
  margin: 10px 0;
}

.lecture-example strong {
  color: var(--accent-geometriya);
}

.lecture-figure {
  display: flex;
  justify-content: center;
  margin: 14px 0;
}

.lecture-figure svg { max-width: 100%; height: auto; }

.embed-frame {
  width: 100%;
  height: 420px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.embed-frame-tall {
  height: 520px;
}

.placeholder {
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: 16px;
}

.sim-plan {
  margin-top: 16px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 12px;
}
.sim-plan-title {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}
.sim-plan p { margin: 0; line-height: 1.6; }

.muted { color: var(--muted); }

#gallery-grid {
  margin-top: 24px;
}

.gallery-grade-section {
  margin-bottom: 40px;
}

.gallery-grade-section .upload-subject-heading {
  margin: 18px 0 12px;
}

.gallery-cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}

.gallery-card {
  padding: 22px;
}

.gallery-card-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-geometriya);
  margin-bottom: 8px;
}

.gallery-card-title {
  font-weight: 700;
}

.page-title {
  font-size: 1.9rem;
  margin-bottom: 4px;
}

/* ---------- Interaktiv test (quiz) ---------- */

.quiz-page {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px 80px;
  min-height: 100vh;
}
/* mavzu sahifasi ichida (iframe): oyna balandligi testga moslashadi — 100vh bo'lsa faqat o'sib boradi */
.quiz-embedded .quiz-page { min-height: 0; padding: 12px 20px 20px; }

.quiz-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}

.quiz-back {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
}

.quiz-back:hover { color: var(--primary); }

.quiz-progress {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.dot.done { background: var(--accent-geometriya); }
.dot.active { background: var(--primary); transform: scale(1.3); }

.quiz-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 28px;
  box-shadow: var(--shadow);
}

.quiz-level {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary);
  margin-bottom: 10px;
}

.quiz-question {
  font-size: 1.35rem;
  margin: 0 0 26px;
  line-height: 1.4;
}

.quiz-options {
  display: grid;
  gap: 12px;
}

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 16px 18px;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--text);
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 14px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.quiz-option:disabled { cursor: default; }

.quiz-option.correct {
  border-color: var(--accent-geometriya);
  background: #e6f7f4;
  color: var(--accent-geometriya);
}

.quiz-option.wrong {
  border-color: #e0546a;
  background: #fbe9ec;
  color: #c73754;
}

.quiz-feedback { margin-top: 22px; }

.feedback-text {
  font-weight: 700;
  margin-bottom: 16px;
}

.correct-text { color: var(--accent-geometriya); }
.feedback-explain {
  margin: -6px 0 16px;
  padding: 10px 14px;
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  background: #eef0fb;
  color: var(--text);
  line-height: 1.5;
}
.wrong-text { color: #c73754; }

.quiz-next {
  display: inline-block;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 12px;
  cursor: pointer;
}

.quiz-next:hover { background: var(--primary-dark); }

.quiz-result { text-align: center; padding: 20px 0; }

.quiz-result-score {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
}

.quiz-result-message {
  color: var(--muted);
  margin: 8px 0 28px;
  font-size: 1.05rem;
}

.quiz-result-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.quiz-back-btn {
  display: inline-block;
  padding: 12px 24px;
  font-weight: 700;
  border: 2px solid var(--border);
  border-radius: 12px;
}

.quiz-back-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Hamburger menyu / chapdan chiquvchi panel ---------- */

.site-header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.side-drawer {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: 280px;
  background: var(--surface);
  box-shadow: 4px 0 24px rgba(0,0,0,0.12);
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  z-index: 100;
}

.side-drawer.open { transform: translateX(0); }

.side-drawer-inner {
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 4px;
}

.drawer-close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 12px;
}

.drawer-link {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
}

.drawer-link:hover { background: var(--bg); }

.drawer-divider {
  height: 1px;
  background: var(--border);
  margin: 10px 0;
}

.drawer-logout { color: #c73754; }

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 18, 30, 0.35);
  z-index: 90;
}

/* ---------- Login / Admin / Sozlamalar / Ma'lumot ---------- */

.page-container.narrow {
  max-width: 480px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}

.auth-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--muted);
}

.auth-input {
  padding: 12px 14px;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
}

.auth-input:focus {
  outline: none;
  border-color: var(--primary);
}

.auth-error {
  color: #c73754;
  font-weight: 600;
  font-size: 0.9rem;
}

.admin-note {
  text-align: left;
  margin: 20px 0;
  padding: 18px 20px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 0.9rem;
}

.admin-table th, .admin-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  background: var(--bg);
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

/* ---------- Admin dashboard ---------- */

.page-container.wide { max-width: 1200px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin: 32px 0 8px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.stat-card-soon { opacity: 0.6; }

.stat-value {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 4px;
}

.stat-soon-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--border);
  color: var(--muted);
  padding: 2px 6px;
  border-radius: 999px;
  margin-left: 4px;
}

.dashboard-section {
  margin-top: 44px;
}

.grade-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 24px;
}

.grade-chip {
  padding: 10px 20px;
  font-weight: 700;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
}

.grade-chip:hover { border-color: var(--primary); }

.grade-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.upload-subject-group { margin-bottom: 28px; }

.upload-subject-heading {
  font-size: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}

.upload-topic-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
}

.upload-topic-title { font-weight: 600; }

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

.topic-upload-btn {
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--primary-dark);
  background: #eef0fb;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.topic-upload-btn:hover { background: #e0e3f9; }

.upload-target-panel {
  position: sticky;
  bottom: 20px;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  margin-top: 12px;
}

.upload-target-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}

.upload-target-title { font-weight: 700; font-size: 1.05rem; }

.upload-btn {
  display: inline-block;
  margin-top: 14px;
  padding: 10px 20px;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: var(--primary);
  border-radius: 10px;
  cursor: pointer;
}

.upload-btn:hover { background: var(--primary-dark); }

.upload-result {
  margin-top: 18px;
  text-align: left;
  background: var(--bg);
  border-radius: 12px;
  padding: 14px;
}

.upload-filename {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.upload-instruction {
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  margin: 0 0 10px;
}

.upload-copy-btn {
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--primary-dark);
  background: #eef0fb;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.upload-copy-btn:hover { background: #e0e3f9; }

/* ===================== Admin panel ===================== */
.adm-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.adm-head-link { color: var(--primary); font-weight: 700; font-size: 0.9rem; padding: 8px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.adm-head-link:hover { border-color: var(--primary); }

.adm-stats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin-bottom: 28px; }
.adm-stat { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); padding: 16px 18px; border-top: 3px solid var(--primary); }
.adm-stat--teal { border-top-color: var(--accent-geometriya); }
.adm-stat--green { border-top-color: #2bbfa9; }
.adm-stat-value { font-size: 1.7rem; font-weight: 800; line-height: 1.1; }
.adm-stat-label { font-weight: 700; margin-top: 4px; }
.adm-stat-sub { color: var(--muted); font-size: 0.78rem; margin-top: 2px; }

.adm-work { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 24px; align-items: start; }
.adm-side { position: sticky; top: 84px; }
.adm-side-label { display: none; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: #9ca3af; margin-bottom: 10px; }
.adm-grade-list { display: flex; flex-direction: column; gap: 8px; }
.adm-group-label { font-size: 0.72rem; font-weight: 800; color: #9ca3af; margin: 8px 0 0; }
.adm-group-label:first-child { margin-top: 0; }
.adm-grade--primary .adm-grade-num { background: linear-gradient(135deg, #2bbfa9, #12897c); }
.adm-current { margin-top: 14px; padding: 10px 12px; border-radius: 10px; background: var(--bg); font-size: 0.85rem; }
.adm-current code { background: #e9ebf3; padding: 1px 5px; border-radius: 5px; }
.adm-current a { color: var(--primary); font-weight: 700; }
.adm-tab-sub { font-weight: 600; opacity: 0.75; font-size: 0.75rem; }
.adm-type-tabs { flex-wrap: wrap; }
.adm-grade { display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px 12px; text-align: left; font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; cursor: pointer; transition: border-color 0.12s ease, box-shadow 0.12s ease; }
.adm-grade:hover { border-color: #c9cef5; }
.adm-grade.active { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 91, 213, 0.12); }
.adm-grade-num { flex: 0 0 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, #6872e0, var(--primary-dark)); }
.adm-grade-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.adm-grade-name { font-weight: 700; }
.adm-grade-meta { color: var(--muted); font-size: 0.75rem; }
.adm-bar { height: 5px; border-radius: 999px; background: #eceef5; overflow: hidden; }
.adm-bar i { display: block; height: 100%; background: var(--accent-geometriya); border-radius: 999px; }
.adm-side-note { margin-top: 14px; padding: 12px 14px; border-radius: 12px; background: #e6f7f4; color: #0f6f63; font-size: 0.8rem; line-height: 1.5; }
.adm-side-note a { display: inline-block; margin-top: 4px; font-weight: 700; color: #0f6f63; }
.adm-side-note code { font-size: 0.75rem; }

.adm-main { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); padding: 20px 22px; }
.adm-main-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.adm-main-title { margin: 0; font-size: 1.4rem; }
.adm-progress { color: var(--muted); font-size: 0.85rem; margin-top: 2px; }
.adm-filter { display: flex; gap: 4px; padding: 4px; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; }
.adm-filter-btn { font: inherit; font-size: 0.82rem; font-weight: 700; color: var(--muted); padding: 6px 12px; border: 0; border-radius: 7px; background: none; cursor: pointer; }
.adm-filter-btn.active { background: var(--surface); color: var(--primary); box-shadow: 0 1px 4px rgba(31, 36, 51, 0.1); }
.adm-legend { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font-size: 0.78rem; color: var(--muted); margin: 14px 0 6px; }
.adm-legend span { display: inline-flex; align-items: center; gap: 5px; }

.adm-subject { margin-top: 14px; }
.adm-subject-name { font-weight: 800; font-size: 0.95rem; margin-bottom: 6px; color: var(--primary-dark); }
.adm-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.adm-row { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-top: 1px solid var(--border); }
.adm-row:first-child { border-top: 0; }
.adm-row:hover { background: #fafbff; }
.adm-row-num { flex: 0 0 34px; color: #9ca3af; font-weight: 700; font-variant-numeric: tabular-nums; }
.adm-row-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.adm-row-title { font-weight: 600; }
.adm-row-title:hover { color: var(--primary); }
.adm-row-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.adm-pill { display: inline-flex; align-items: center; gap: 5px; padding: 2px 8px; border-radius: 999px; font-size: 0.72rem; font-weight: 700; background: #f3f4f8; color: var(--muted); }
.adm-pill--ok { background: #e6f7f4; color: #0f6f63; }
.adm-pill--part { background: #fff6e0; color: #8a6100; }
.adm-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #c3c7d4; }
.adm-dot--ok { background: var(--accent-geometriya); }
.adm-dot--part { background: #f0b429; }
.adm-upload-btn { flex: 0 0 auto; font: inherit; font-size: 0.8rem; font-weight: 700; color: var(--primary); background: var(--surface); border: 1px solid var(--border); border-radius: 9px; padding: 6px 12px; cursor: pointer; }
.adm-upload-btn:hover { border-color: var(--primary); background: #f5f6fe; }
.adm-empty { margin-top: 16px; padding: 28px; text-align: center; color: var(--muted); border: 1px dashed var(--border); border-radius: 12px; }

.adm-soon { display: flex; gap: 14px; align-items: center; margin-top: 24px; padding: 16px 20px; border: 1px dashed var(--border); border-radius: 14px; background: var(--surface); }
.adm-soon-icon { font-size: 1.6rem; }

/* yuklash oynasi */
.adm-modal { position: fixed; inset: 0; z-index: 200; background: rgba(15, 18, 30, 0.45); display: flex; align-items: center; justify-content: center; padding: 16px; }
.adm-modal-box { width: min(560px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; background: var(--surface); border-radius: 16px; box-shadow: 0 20px 60px rgba(15, 18, 30, 0.25); padding: 22px 24px; }
.adm-modal-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.adm-modal-kicker { font-size: 0.78rem; font-weight: 700; color: var(--muted); }
.adm-modal-title { font-size: 1.15rem; font-weight: 800; margin-top: 2px; }
.adm-type-tabs { display: flex; gap: 6px; margin: 16px 0 14px; }
.adm-type-tab { font: inherit; font-size: 0.85rem; font-weight: 700; color: var(--muted); padding: 7px 14px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); cursor: pointer; }
.adm-type-tab.active { color: #fff; background: var(--primary); border-color: var(--primary); }
.adm-drop { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 26px 16px; text-align: center; border: 2px dashed #c9cef5; border-radius: 12px; background: #f8f9fe; cursor: pointer; transition: border-color 0.12s ease, background 0.12s ease; }
.adm-drop:hover, .adm-drop.over { border-color: var(--primary); background: #eef0fd; }
.adm-drop-icon { font-size: 1.4rem; color: var(--primary); }
.adm-drop .muted { font-size: 0.8rem; }
.adm-file { margin-top: 16px; font-weight: 700; }
.adm-steps { margin: 10px 0 0; padding-left: 20px; line-height: 1.6; font-size: 0.92rem; }
.adm-steps li { margin-bottom: 6px; }
.adm-steps code, .adm-side-note code { background: #f1f2f8; padding: 1px 5px; border-radius: 5px; }
.adm-code { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 8px; padding: 10px 12px; border-radius: 10px; background: #1f2433; color: #e6e8f2; font-size: 0.85rem; overflow-x: auto; }
.adm-code code { white-space: nowrap; }
.adm-note { margin: 10px 0 0; font-size: 0.85rem; color: var(--muted); }
.adm-note code { background: #f1f2f8; padding: 1px 5px; border-radius: 5px; }
.adm-copy { flex: 0 0 auto; font: inherit; font-size: 0.78rem; font-weight: 700; color: #1f2433; background: #fff; border: 0; border-radius: 7px; padding: 5px 10px; cursor: pointer; }

@media (max-width: 960px) {
  .adm-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .adm-work { grid-template-columns: 1fr; }
  .adm-side { position: static; }
  /* tor ekranda: ixcham tugmalar to'ri (faqat raqam va nom) */
  /* har qatorda 4 tadan: 1–4 | 5–8 | 9–11 */
  .adm-grade-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
  .adm-group-label { grid-column: 1 / -1; margin: 6px 0 0; font-size: 0.8rem; }
  .adm-grade { padding: 13px 15px; gap: 12px; border-radius: 14px; }
  .adm-grade-num { flex-basis: 46px; height: 46px; font-size: 1.25rem; border-radius: 12px; }
  .adm-grade-meta, .adm-grade .adm-bar { display: none; }
  .adm-grade-name { font-size: 1.12rem; white-space: nowrap; }
}
@media (max-width: 720px) {
  .adm-grade { padding: 11px 10px; gap: 9px; }
  .adm-grade-num { flex-basis: 40px; height: 40px; font-size: 1.1rem; }
  .adm-grade-name { font-size: 1.02rem; }
}
@media (max-width: 560px) {
  .adm-grade-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adm-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adm-stat:last-child { grid-column: 1 / -1; }
  .adm-main { padding: 16px 14px; }
  .adm-row { flex-wrap: wrap; }
  .adm-upload-btn { margin-left: 40px; }
}

/* Nishonlar to'plami (sinf sahifasi) */
.badge-board { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; margin-bottom: 18px; }
.badge-board-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.badge-board-head span { font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.badge-board-bar { height: 6px; border-radius: 3px; background: #eceef6; overflow: hidden; margin-bottom: 14px; }
.badge-board-bar span { display: block; height: 100%; background: var(--primary); border-radius: 3px; }
.badge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(34px, 1fr)); gap: 6px; }
.badge-cell { display: flex; align-items: center; justify-content: center; height: 36px; border-radius: 8px; }
.badge-cell:hover { background: #f3f4fb; }
.badge-board-foot { margin: 12px 0 0; font-size: .8rem; color: var(--muted); }
.topic-row-badge { flex: 0 0 auto; align-self: center; line-height: 0; }

/* ---------- Mavzu qidirish (yuqoridagi lupa) ---------- */
.site-nav { margin-left: auto; }
.search-open {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; margin-left: 18px; padding: 0;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--surface); color: var(--muted); cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.search-open:hover { color: var(--primary); border-color: var(--primary); background: #f3f4fd; }
@media (max-width: 640px) { .search-open { margin-left: auto; } }

.site-search {
  position: fixed; inset: 0; z-index: 120;
  background: rgba(15, 18, 30, 0.35);
  display: flex; justify-content: center; align-items: flex-start;
  padding: 72px 16px 16px;
}
.search-open-body { overflow: hidden; }
.site-search-box {
  width: 100%; max-width: 620px; background: var(--surface);
  border-radius: 16px; box-shadow: 0 20px 50px rgba(15, 18, 30, 0.25); overflow: hidden;
}
.site-search-field {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-bottom: 1px solid var(--border); color: var(--muted);
}
.site-search-field input {
  flex: 1; min-width: 0; border: none; outline: none; background: none;
  font: inherit; font-size: 1.05rem; color: var(--text);
}
.site-search-field input::-webkit-search-cancel-button { display: none; }
.site-search-close {
  border: 1px solid var(--border); background: var(--bg); color: var(--muted);
  border-radius: 6px; padding: 2px 8px; font: inherit; font-size: .75rem; cursor: pointer;
}
.site-search-list { list-style: none; margin: 0; padding: 6px; max-height: min(60vh, 460px); overflow-y: auto; }
.site-search-item { display: block; padding: 10px 12px; border-radius: 10px; }
.site-search-item.active, .site-search-item:hover { background: #f1f2fc; }
.site-search-title { display: block; font-weight: 600; line-height: 1.4; }
.site-search-title mark { background: none; color: var(--primary); font-weight: 800; }
.site-search-meta { display: block; font-size: .8rem; color: var(--muted); margin-top: 2px; }
.site-search-meta b { color: var(--accent-geometriya); font-weight: 700; }
.site-search-empty { padding: 14px 12px; color: var(--muted); font-size: .92rem; }
.site-search-group {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 12px 12px 4px; font-size: .72rem; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; color: var(--primary);
}
.site-search-group span { color: var(--muted); font-weight: 600; letter-spacing: 0; text-transform: none; }
.site-search-group--similar { color: var(--muted); border-top: 1px solid var(--border); margin-top: 6px; }

/* qidiruv: "Barcha natijalar" tugmasi va katta oyna */
.site-search-more {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 4px 12px;
  margin-top: 4px; border-top: 1px solid var(--border); border-radius: 0 0 10px 10px;
  color: var(--primary); font-weight: 600;
}
.site-search-more span { font-size: .8rem; color: var(--muted); font-weight: 500; }
.site-search-box { transition: max-width .2s ease; }
.site-search-box--wide { max-width: 980px; }
.site-search-box--wide .site-search-list {
  max-height: calc(100vh - 230px);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 8px; align-content: start;
}
.site-search-box--wide .site-search-group,
.site-search-box--wide .site-search-empty { grid-column: 1 / -1; }
.site-search-chips {
  display: flex; gap: 6px; padding: 10px 14px; overflow-x: auto;
  border-bottom: 1px solid var(--border); scrollbar-width: thin;
}
.site-search-chip {
  flex: none; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--surface); font: inherit; font-size: .85rem; font-weight: 600; color: var(--text); cursor: pointer;
}
.site-search-chip span { color: var(--muted); font-weight: 500; margin-left: 2px; }
.site-search-chip:hover { border-color: var(--primary); }
.site-search-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.site-search-chip.active span { color: rgba(255, 255, 255, .8); }
@media (max-width: 720px) {
  .site-search { padding-top: 16px; }
  .site-search-box--wide .site-search-list { grid-template-columns: 1fr; max-height: calc(100vh - 150px); }
}
.site-search-more em { font-style: normal; }

/* Yangi simulyatorli interaktiv darslar — yashil (eskilari ko'k qoladi) */
.topic-btn--new { color: #12805C; border-color: #BFE5D3; }
.topic-btn--new:hover { border-color: #12805C; }
.topic-btn--primary.topic-btn--new { background: #12805C; border-color: #12805C; color: #fff; }
.topic-btn--primary.topic-btn--new:hover { background: #0E6B4C; border-color: #0E6B4C; }
.site-search-meta b.is-old { color: var(--primary); }
.site-search-meta b.is-new { color: #12805C; }

/* logotip — logo.png (belgi + "Mathlearn" yozuvi) */
.site-logo { display: flex; align-items: center; }
.site-logo-img { display: block; height: 36px; width: auto; }
@media (max-width: 380px) { .site-logo-img { height: 28px; } }

/* qizil nuqta — hali tekshirilmagan yangi simulyator */
.review-dot { display: inline-block; width: 10px; height: 10px; margin-left: 8px; border-radius: 50%; background: #E11D48; box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.18); vertical-align: middle; }
.review-dot.yellow { background: #F59E0B; box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.22); }
.review-dot.green { background: #16A34A; box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2); }
.review-dot.blue { background: #2563EB; box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2); }
.dot-legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 0.85rem; color: var(--muted); margin: 0 0 12px; }
.dot-legend span { display: inline-flex; align-items: center; gap: 8px; }
.dot-legend .review-dot { margin-left: 3px; }