:root{
  --bg:#111;
  --card:#1c1c1e;
  --muted:#a7a7a7;
  --line:#2a2a2a;
  --btn:#2e2e2e;
  --accent:#e6c158;
  --good:#2ecc71;
  --bad:#e74c3c;
  --inactive:#3a3a3c;
  --future:#4a4a4e;
  
  --course:#3498db;
  --visual:#9b59b6;
  --template:#e67e22;
  --test:#e74c3c;
  
  --course-future:rgba(52, 152, 219, 0.4);
  --visual-future:rgba(155, 89, 182, 0.4);
  --template-future:rgba(230, 126, 34, 0.4);
  --good-future:rgba(46, 204, 113, 0.4);
  
  --empty-border:rgba(255,255,255,0.15);
}

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

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background: #000;
  color:#fff;
  min-height: 100vh;
}

.app-wrapper {
  width: 100%;
  max-width: 100%;
  background: var(--bg);
  position: relative;
  min-height: 100vh;
}

.header {
  width: 100%;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.logo-img {
  height: 30px;
  width: auto;
}

.logo span {
  background: linear-gradient(135deg, var(--accent), #f1c40f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.container{
  width: 100%;
  padding:16px;
  padding-bottom:100px;
}

@media (max-width: 560px) {
  .container {
    padding: 10px;
    padding-bottom: 96px;
  }

  #home,
  #profile,
  .home-screen,
  .tests-main-screen,
  .stats-screen,
  .mistakes-review-screen {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
}

.section{ display:none; }
.section.active{ display:block; }

.card{
  width: 100%;
  background:var(--card);
  border-radius:16px;
  padding:16px;
  margin-bottom:12px;
  border:1px solid rgba(255,255,255,0.04);
}

.subtle{
  color:var(--muted);
  font-size:13px;
  line-height:1.4;
}

.row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  flex-wrap: wrap;
}

.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:999px;
  background:rgba(255,255,255,0.06);
  color:#fff;
  font-size:12px;
  border:1px solid rgba(255,255,255,0.06);
  white-space:nowrap;
}

.badge-free {
  background: var(--good);
  color: #000;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-block;
}

.badge-course {
  background: var(--course);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-block;
}

.badge-visual {
  background: var(--visual);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-block;
}

.badge-template {
  background: var(--template);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-block;
}

.badge-test {
  background: var(--test);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-block;
}

/* Progress bar with dividers */
.progress-bar {
  height: 8px;
  background: var(--btn);
  border-radius: 999px;
  overflow: hidden;
  margin: 10px 0 4px;
  position: relative;
}

/* Filled track */
.progress {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.3s ease;
  position: relative;
  z-index: 1;
}

/* Divider layer */
.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  background-image: repeating-linear-gradient(
    90deg,
    transparent,
    transparent calc(100% / var(--total) - 2px),
    rgba(0, 0, 0, 0.5) calc(100% / var(--total) - 2px),
    rgba(0, 0, 0, 0.5) calc(100% / var(--total))
  );
  background-size: 100% 100%;
  background-repeat: no-repeat;
}


.button{
  width:100%;
  padding:12px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.06);
  background:var(--btn);
  color:#fff;
  margin-top:8px;
  font-size:14px;
  cursor:pointer;
  transition: transform .06s ease, opacity .2s ease, background-color 0.2s ease;
  text-align:left;
}
.button:active{ transform:scale(0.99); }
.button:hover{ opacity:.92; }
.button:disabled{ opacity:.5; cursor:not-allowed; background: var(--inactive); }

.button.primary{
  background:var(--accent);
  color:#000;
  font-weight:700;
  border-color:rgba(0,0,0,0.12);
  text-align:center;
}

.button.ghost{
  background:transparent;
  border-color:rgba(255,255,255,0.10);
}

.back-button-large {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  margin: 20px 0 10px 0;
  text-align: center;
}

.back-button-small {
  margin-bottom: 15px;
  background: transparent;
  border: 1px solid var(--line);
  color: #fff;
  padding: 8px 15px;
  border-radius: 30px;
  font-size: 14px;
  cursor: pointer;
  width: auto;
  display: inline-block;
}

.view-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: var(--card);
  padding: 4px;
  border-radius: 30px;
  border: 1px solid var(--line);
}

.view-toggle-btn {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 30px;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-toggle-btn.active {
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.calendar-title {
  font-size: 18px;
  font-weight: 600;
  text-transform: capitalize;
}

.calendar-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--btn);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.calendar-nav-btn:active {
  background: var(--accent);
  color: #000;
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 12px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-cell {
  aspect-ratio: 1;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  position: relative;
  transition: all 0.1s ease;
  padding: 4px 0;
  border: 2px solid;
  background: var(--card);
}

.calendar-cell.empty {
  border-color: transparent !important;
  background: transparent;
  cursor: default;
}

.calendar-cell.regular {
  border-color: var(--empty-border);
}

.calendar-cell.selected {
  background: rgba(230, 193, 88, 0.15);
}

.day-number {
  font-weight: 500;
  margin-bottom: 2px;
}

.event-dots {
  display: flex;
  gap: 2px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 100%;
  padding: 0 2px;
}

.event-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.day-materials {
  margin-top: 20px;
}

.day-materials-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent);
}

/* Avatar image display */
.profile-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background-color: #C39A69;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  flex-shrink: 0;
  overflow: hidden;
}

.profile-info h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.profile-info p {
  font-size: 13px;
  color: var(--muted);
}

.subscription-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
}

.sub-card {
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sub-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sub-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.sub-icon.course { background: var(--course); }
.sub-icon.visual { background: var(--visual); }
.sub-icon.template { background: var(--template); }
.sub-icon.test { background: var(--test); }
.sub-icon.free { background: var(--good); }

.sub-details h4 {
  font-size: 15px;
  margin-bottom: 2px;
}

.sub-details p {
  font-size: 12px;
  color: var(--muted);
}

.sub-status {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
}

.sub-status.active {
  background: rgba(46, 204, 113, 0.2);
  color: var(--good);
}

.sub-status.inactive {
  background: rgba(231, 76, 60, 0.1);
  color: var(--bad);
}

.sub-button {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
}

.comment {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(195, 154, 105, 0.08);
  border: 1px solid rgba(195, 154, 105, 0.2);
  border-left: 4px solid var(--accent);
  font-size: 14px;
  line-height: 1.5;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.placeholder-image {
  width: 100%;
  height: 160px;
  background: linear-gradient(45deg, var(--btn), var(--inactive));
  border-radius: 12px;
  margin: 10px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
}

/* ===== Home ===== */
#home {
  padding: 10px;
}

.home-screen {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-hero,
.home-card {
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
  border-radius: 16px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s;
}

.home-hero {
  align-items: stretch;
  overflow: hidden;
  padding: 0;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.22);
}

.home-card:hover {
  background: #222;
  border-color: #e6c158;
}

.home-hero-img {
  width: 112px;
  aspect-ratio: 3 / 2;
  min-height: 0;
  object-fit: cover;
  border-radius: 16px 0 0 16px;
  background: #2a2a2a;
  flex-shrink: 0;
}

.home-hero-content {
  flex: 1;
  min-width: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(135deg, rgba(230, 193, 88, 0.08), transparent 52%);
}

.home-hero h2,
.home-card h3 {
  margin: 0 0 4px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
}

.home-hero p,
.home-card p {
  margin: 0;
  color: #888;
  font-size: 13px;
  line-height: 1.4;
}

.home-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: #2a2a2a;
  color: #e6c158;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.home-wide-card {
  align-items: flex-start;
}

.home-info-card {
  display: block;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.16);
}

.home-info-card h3 {
  margin-bottom: 6px;
}

.home-info-lead {
  margin: 0 0 14px;
  color: #9b9b9b;
  font-size: 13px;
  line-height: 1.45;
}

.home-benefits {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.home-benefit {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  border-top: 1px solid #2a2a2a;
}

.home-benefit:first-child {
  border-top: none;
  padding-top: 0;
}

.home-benefit:last-child {
  padding-bottom: 0;
}

.home-benefit span {
  color: #e6c158;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  min-height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-benefit p {
  margin: 0;
  color: #ddd;
  font-size: 13px;
  line-height: 1.45;
}

@media (min-width: 760px) {
  #home {
    padding: 24px;
  }

  .home-screen {
    max-width: 960px;
    margin: 0 auto;
    gap: 16px;
  }

  .home-hero {
    min-height: 0;
  }

  .home-hero-img {
    width: 42%;
    aspect-ratio: 3 / 2;
  }

  .home-hero-content {
    padding: 28px;
  }

  .home-hero h2 {
    font-size: 26px;
    margin-bottom: 10px;
  }

  .home-hero p {
    font-size: 15px;
    max-width: 460px;
  }

  .home-info-card {
    padding: 24px;
  }

  .home-info-card h3 {
    font-size: 20px;
    margin-bottom: 8px;
  }

  .home-info-lead {
    max-width: 720px;
    font-size: 14px;
    margin-bottom: 18px;
  }

  .home-benefits {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 22px;
    border-top: 1px solid #2a2a2a;
  }

  .home-benefit,
  .home-benefit:first-child {
    border-top: none;
    padding: 14px 0;
    border-bottom: 1px solid #2a2a2a;
  }

  .home-benefit:last-child {
    padding-bottom: 14px;
  }
}

@media (max-width: 420px) {
  .home-hero {
    flex-direction: column;
  }

  .home-hero-img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    min-height: 0;
    border-radius: 16px 16px 0 0;
  }
}

/* Disable sticky hover and tap highlights on touch devices. */
@media (hover: none), (pointer: coarse) {
  * {
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none;
  }

  .card,
  .button,
  .nav-btn,
  .home-card,
  .course-card,
  .material-item,
  .test-item,
  .test-card,
  .subscribe-btn,
  .back-btn,
  .theme-card,
  .difficulty-card,
  .stats-all-btn,
  .sub-card,
  .sub-card-btn,
  .subscribe-link,
  .promo-card,
  .info-btn {
    -webkit-tap-highlight-color: transparent !important;
    outline: none !important;
  }

  .card:focus,
  .button:focus,
  .nav-btn:focus,
  .home-card:focus,
  .course-card:focus,
  .material-item:focus,
  .test-item:focus,
  .test-card:focus,
  .subscribe-btn:focus,
  .back-btn:focus,
  .theme-card:focus,
  .difficulty-card:focus,
  .stats-all-btn:focus,
  .sub-card:focus,
  .sub-card-btn:focus,
  .subscribe-link:focus,
  .promo-card:focus,
  .info-btn:focus {
    outline: none !important;
    box-shadow: none !important;
  }

  .button:hover,
  .controls-wrap .button:hover:not(:disabled),
  .controls-wrap .button.primary:hover:not(:disabled),
  .nav-btn:hover,
  .home-card:hover,
  .course-card:hover,
  .material-item.active:hover,
  .test-item:hover,
  .test-card:hover,
  .subscribe-btn:hover,
  .back-btn:hover,
  .theme-card:hover,
  .difficulty-card:hover,
  .stats-all-btn:hover,
  .card [data-fav-btn]:hover,
  .sub-card:hover,
  .sub-card-btn:hover,
  .subscribe-link:hover,
  .promo-card:hover,
  .test-card .button[onclick*="discardSavedTest"]:hover {
    opacity: 1 !important;
    transform: none !important;
  }

  .button:active,
  .controls-wrap .button:active,
  .nav-btn:active,
  .home-card:active,
  .course-card:active,
  .material-item:active,
  .test-item:active,
  .test-card:active,
  .subscribe-btn:active,
  .back-btn:active,
  .theme-card:active,
  .difficulty-card:active,
  .stats-all-btn:active,
  .sub-card:active,
  .sub-card-btn:active,
  .subscribe-link:active,
  .promo-card:active,
  .info-btn:active {
    opacity: 1 !important;
    transform: none !important;
  }

  .home-card:hover,
  .test-card:hover,
  .theme-card:hover,
  .difficulty-card:hover,
  .sub-card:hover {
    background: #1a1a1a;
    border-color: #2a2a2a;
  }

  .promo-card:hover {
    background: #2a2a2a;
  }

  .button:hover,
  .controls-wrap .button:hover:not(:disabled),
  .test-card .button[onclick*="discardSavedTest"]:hover {
    background: var(--btn);
    color: #fff;
  }

  .nav-btn:hover {
    background: transparent;
    color: var(--muted);
  }

  .nav-btn.active:hover {
    color: var(--accent);
  }

  .subscribe-btn:hover {
    background: #e6c158;
    color: #000;
  }

  .back-btn:hover {
    background: #2a2a2a;
  }

  .stats-all-btn:hover {
    background: rgba(230, 193, 88, 0.15);
  }

  .button.primary:hover,
  .controls-wrap .button.primary:hover:not(:disabled) {
    background: var(--accent);
    color: #000;
  }

  .sub-card-btn:hover {
    background: #e6c158;
    color: #1a1a1a;
  }

  .subscribe-link:hover {
    color: #e6c158;
  }

  .test-card .button[onclick*="discardSavedTest"]:hover .icon {
    background-color: currentColor;
  }
}

.placeholder-video {
  width: 100%;
  height: 200px;
  background: linear-gradient(45deg, var(--btn), var(--inactive));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 14px;
}

.course-card {
  width: 100%;
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 14px;
  border: 1px solid rgba(255,255,255,0.04);
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.2s ease;
}
.course-card:hover {
  transform: scale(1.02);
  border-color: var(--accent);
}
.course-card h3 {
  margin: 0 0 8px 0;
  font-size: 18px;
}
.course-meta {
  display: flex;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}

.module {
  margin: 20px 0 10px 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.material-item {
  width: 100%;
  background: rgba(255,255,255,0.02);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 8px;
  border: 1px solid var(--line);
  transition: all 0.1s ease;
}

.material-item.active {
  border-left: 4px solid var(--accent);
  background: rgba(230, 193, 88, 0.1);
  cursor: pointer;
}
.material-item.active:hover {
  background: rgba(230, 193, 88, 0.15);
}

.material-item.inactive {
  opacity: 0.5;
  background: var(--inactive);
  cursor: default;
  border-left: 4px solid var(--future);
}

.material-title {
  font-weight: 500;
  font-size: 15px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.material-date-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}

.material-date {
  display: flex;
  align-items: center;
  gap: 4px;
}

.material-badge {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 20px;
  background: var(--accent);
  color: #000;
  font-weight: 600;
}

.material-badge.future {
  background: var(--future);
  color: #fff;
}

.test-item {
  width: 100%;
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 12px;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: all 0.1s ease;
}
.test-item:hover {
  border-color: var(--accent);
}

.test-item.completed {
  opacity: 0.8;
  border-left: 4px solid var(--good);
}

.test-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.test-title {
  font-weight: 700;
  font-size: 16px;
}

.test-badge {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

.test-badge.free { background: var(--good); color: #000; }
.test-badge.test { background: var(--test); color: #fff; }

.ans{
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.badge{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border-radius:9px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.08);
  font-size:14px;
}
.ans-text{
  line-height:1.4;
  padding-top:2px;
  flex: 1;
  font-size:15px;
}

/* Test controls */
.test-controls{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  width: 100%;
  background: rgba(28,28,30,0.96);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  padding: 10px 14px;
  display: none;
  z-index: 20;
  border-radius: 0;
}
.controls-wrap{
  max-width:720px;
  margin:0 auto;
  display:flex;
  gap:8px;
}
.controls-wrap .button{
  margin-top:0;
  text-align:center;
  padding:10px;
  font-size:13px;
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 12px;
  color: #fff;
  flex: 1;
}
.controls-wrap .button.primary{
  background: var(--accent);
  color:#000;
  border: none;
}
.controls-wrap .button.ghost{
  background:transparent;
  border-color: rgba(230,193,88,0.3);
  color: var(--accent);
}

.test-controls.active {
  display: block;
}

/* ========== Bottom navigation ========== */
.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(28,28,30,0.96);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 4px;
  padding: 5px 8px 5px;
  border-top: 1px solid var(--line);
  z-index: 25;
}

.nav-btn {
  background: none;
  border: none;
  color: #aaa;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
  min-width: 50px;
  max-width: 80px;
  transition: color 0.2s ease;
}

.nav-btn span {
  font-size: 10px;
  white-space: nowrap;
}

.nav-btn:hover {
  color: var(--accent);
}

.nav-btn.active {
  color: var(--accent);
}

.nav-btn .icon {
  width: 24px;
  height: 24px;
}

/* ========== Icons (SVG masks) ========== */
.icon {
  display: inline-block;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background-color: currentColor;
  
  -webkit-mask-image: var(--icon);
  mask-image: var(--icon);
  
  -webkit-mask-size: contain;
  mask-size: contain;
  
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  
  -webkit-mask-position: center;
  mask-position: center;
  
  transition: background-color 0.2s ease;
}

.icon-inline {
  display: inline-block;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  vertical-align: middle;
  margin-right: 8px;
}

/* ========== Favorite button ========== */
.controls-wrap .button#favoriteBtn {
  width: auto;
  min-width: 44px;
  flex: 0 0 auto;
  padding: 8px 12px;
  gap: 6px;
  background: var(--btn);
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#favoriteBtn.active {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

#favoriteBtn .icon {
  width: 18px;
  height: 18px;
}

.center{ text-align:center; }

.stats-grid{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap:14px;
  align-items:center;
}

.statline{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding:8px 0;
  border-bottom:1px solid rgba(255,255,255,0.06);
  font-size:14px;
}
.statline:last-child{ border-bottom:none; }
.k{ color:var(--muted); }
.v{ font-weight:800; }

/* ===== Custom notifications ===== */
.custom-notification {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    pointer-events: none;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    animation: slideUp 0.3s ease;
}

.notification-icon {
    font-size: 16px;
}

.notification-message {
    color: white;
}



/* Wider and wrapped on mobile */
@media (max-width: 480px) {
  .custom-notification {
    max-width: 95vw;
    min-width: auto;
    width: 95%;
  }
  
  .notification-content {
    white-space: normal;
    word-break: break-word;
    padding: 12px 16px;
    font-size: 13px;
    width: 100%;
  }
  
  .notification-message {
    flex: 1;
    line-height: 1.4;
  }
}




@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Universal hidden class ===== */
.hidden {
  display: none !important;
}

/* Hover only on desktop */
@media (hover: hover) {
  .controls-wrap .button:hover:not(:disabled) {
    background: #3a3a3a;
    border-color: var(--accent);
  }
  
  .controls-wrap .button.primary:hover:not(:disabled) {
    background: #f1c40f;
  }
}

/* Active state for all devices */
.controls-wrap .button:active {
  transform: scale(0.98);
  background: #3a3a3a;
  border-color: var(--accent);
}

.controls-wrap .button.primary:active {
  background: #f1c40f;
}

/* ========== Desktop version ========== */
@media (min-width: 768px) {
  .nav-btn {
    padding: 8px 12px;
    min-width: 70px;
    max-width: 100px;
  }
  
  .nav-btn span {
    font-size: 12px;
  }
  
  
}

/* Final touch-device reset. Keep !important because module CSS is loaded after this file. */
@media (hover: none), (pointer: coarse) {
  * {
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none;
  }

  .card,
  .button,
  .nav-btn,
  .home-card,
  .course-card,
  .material-item,
  .test-item,
  .test-card,
  .subscribe-btn,
  .back-btn,
  .theme-card,
  .difficulty-card,
  .stats-all-btn,
  .sub-card,
  .sub-card-btn,
  .subscribe-link,
  .promo-card,
  .info-btn {
    -webkit-tap-highlight-color: transparent !important;
    outline: none !important;
  }

  .card:focus,
  .button:focus,
  .nav-btn:focus,
  .home-card:focus,
  .course-card:focus,
  .material-item:focus,
  .test-item:focus,
  .test-card:focus,
  .subscribe-btn:focus,
  .back-btn:focus,
  .theme-card:focus,
  .difficulty-card:focus,
  .stats-all-btn:focus,
  .sub-card:focus,
  .sub-card-btn:focus,
  .subscribe-link:focus,
  .promo-card:focus,
  .info-btn:focus {
    outline: none !important;
    box-shadow: none !important;
  }

  .button:hover,
  .controls-wrap .button:hover:not(:disabled),
  .controls-wrap .button.primary:hover:not(:disabled),
  .nav-btn:hover,
  .home-card:hover,
  .course-card:hover,
  .material-item.active:hover,
  .test-item:hover,
  .test-card:hover,
  .subscribe-btn:hover,
  .back-btn:hover,
  .theme-card:hover,
  .difficulty-card:hover,
  .stats-all-btn:hover,
  .card [data-fav-btn]:hover,
  .sub-card:hover,
  .sub-card-btn:hover,
  .subscribe-link:hover,
  .promo-card:hover,
  .test-card .button[onclick*="discardSavedTest"]:hover {
    opacity: 1 !important;
    transform: none !important;
  }

  .button:active,
  .controls-wrap .button:active,
  .nav-btn:active,
  .home-card:active,
  .course-card:active,
  .material-item:active,
  .test-item:active,
  .test-card:active,
  .subscribe-btn:active,
  .back-btn:active,
  .theme-card:active,
  .difficulty-card:active,
  .stats-all-btn:active,
  .sub-card:active,
  .sub-card-btn:active,
  .subscribe-link:active,
  .promo-card:active,
  .info-btn:active {
    opacity: 1 !important;
    transform: none !important;
  }

  .home-card:hover,
  .home-card:active,
  .test-card:hover,
  .test-card:active,
  .theme-card:hover,
  .theme-card:active,
  .difficulty-card:hover,
  .difficulty-card:active,
  .sub-card:hover,
  .sub-card:active {
    background: #1a1a1a !important;
    border-color: #2a2a2a !important;
  }

  .promo-card:hover,
  .promo-card:active {
    background: #2a2a2a !important;
  }

  .button:hover,
  .button:active,
  .controls-wrap .button:hover:not(:disabled),
  .controls-wrap .button:active,
  .test-card .button[onclick*="discardSavedTest"]:hover,
  .test-card .button[onclick*="discardSavedTest"]:active {
    background: var(--btn) !important;
    color: #fff !important;
  }

  .nav-btn:hover,
  .nav-btn:active {
    background: transparent !important;
    color: var(--muted) !important;
  }

  .nav-btn.active:hover,
  .nav-btn.active:active {
    color: var(--accent) !important;
  }

  .subscribe-btn:hover,
  .subscribe-btn:active,
  .sub-card-btn:hover,
  .sub-card-btn:active {
    background: #e6c158 !important;
    color: #1a1a1a !important;
  }

  .back-btn:hover,
  .back-btn:active {
    background: #2a2a2a !important;
  }

  .stats-all-btn:hover,
  .stats-all-btn:active {
    background: rgba(230, 193, 88, 0.15) !important;
  }

  .button.primary:hover,
  .button.primary:active,
  .controls-wrap .button.primary:hover:not(:disabled),
  .controls-wrap .button.primary:active {
    background: var(--accent) !important;
    color: #000 !important;
  }

  .subscribe-link:hover,
  .subscribe-link:active {
    color: #e6c158 !important;
  }

  .test-card .button[onclick*="discardSavedTest"]:hover .icon,
  .test-card .button[onclick*="discardSavedTest"]:active .icon {
    background-color: currentColor !important;
  }
}