.courses-page {
  max-width: 600px;
  margin: 0 auto;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
}

.courses-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
}

.courses-back {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--muted);
  text-decoration: none;
}
.courses-back svg { width: 22px; height: 22px; }

.courses-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

@supports ((mask-image: linear-gradient(#000, #000)) or (-webkit-mask-image: linear-gradient(#000, #000))) {
  .tabs {
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 24px), transparent);
    mask-image: linear-gradient(to right, #000 calc(100% - 24px), transparent);
  }
}

.tab {
  flex: none;
  height: 40px;
  padding: 0 16px;
  border: 2px solid var(--border);
  border-radius: 20px;
  background: var(--bg);
  color: var(--text);
  font: 700 16px/36px var(--font);
  white-space: nowrap;
  cursor: pointer;
}
.tab[aria-selected="true"] {
  border-color: var(--acc);
  background: var(--acc);
  color: var(--on-acc);       
}

.tab { box-shadow: 0 var(--lip-sm) 0 var(--border); }
.tab[aria-selected="true"] { box-shadow: 0 var(--lip-sm) 0 var(--acc-lip); }
.tab:active {
  transform: translateY(var(--lip-sm)) translateZ(0);
  box-shadow: none;
}

.courses-main { padding: 0 16px; }

.courses-msg {
  margin: 48px 0;
  color: var(--muted);
  font-size: 16px;
  text-align: center;
}

.course {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  margin-bottom: 16px;
  padding: 16px;
  border: 0;
  border-radius: var(--r-lg);
  background: none;
  color: var(--text);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}
.course::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border: 2px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: 0 var(--lip) 0 var(--border);
}
.course:active { transform: translateY(var(--lip)) translateZ(0); }
.course:active::before { box-shadow: none; }

.course-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.course-name-wrap {
  flex: 1;
  min-width: 0;
}
.course-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  margin-bottom: 6px;
  padding: 0 9px;
  border-radius: 999px;
  background: rgba(255, 145, 0, .12);
  background: color-mix(in srgb, var(--acc) 14%, var(--bg));
  color: var(--acc);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .02em;
}
.course-name {
  font-size: 20px;
  font-weight: 700;
}
.course-count {
  flex: none;
  color: var(--muted);
  font-size: 16px;
}

.course-bar {
  height: 12px;
  margin-top: 12px;
  border-radius: 6px;       
  background: var(--border);
  overflow: hidden;
}
.course-bar > span {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: var(--acc);
  transition: width .4s var(--ease-out);
}

.course-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 16px;
}

.course.is-open::before {
  border-color: var(--acc);
  box-shadow: 0 var(--lip) 0 var(--acc-lip);
}

@media (prefers-reduced-motion: reduce) {
  .course-bar > span { transition: none; }
}