/* assets/pages/learn/learn-section-pages.css */
/* Vivid premium learning-section skin for existing rhythm/maqam/reading learning pages. */

.learn-section-body {
  background:
    radial-gradient(circle at 12% 4%, rgba(124,214,255,.16), transparent 26rem),
    radial-gradient(circle at 88% 8%, rgba(255,143,177,.14), transparent 27rem),
    radial-gradient(circle at 52% 30%, rgba(226,192,122,.10), transparent 34rem),
    var(--bg);
}

.learn-section-body .learn-shell {
  width: min(1180px, 92vw);
  margin: 0 auto;
  padding: 42px 0 90px;
}

.learn-section-body .learn-page {
  position: relative;
}

.learn-section-body .learn-breadcrumb {
  margin-bottom: 18px;
  color: rgba(255,255,255,.62);
}

.learn-section-body .learn-breadcrumb a {
  color: #bfeeff;
  font-weight: 900;
}

.learn-section-body .learn-hero {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,.10);
  background:
    radial-gradient(circle at 18% 16%, rgba(124,214,255,.18), transparent 18rem),
    radial-gradient(circle at 84% 12%, rgba(255,143,177,.14), transparent 18rem),
    linear-gradient(135deg, rgba(255,255,255,.060), rgba(255,255,255,.020));
  box-shadow: 0 24px 60px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.06);
}

.learn-section-body .learn-hero::before {
  content: '𝄞   ♪   ♫   ♩   𝄽';
  position: absolute;
  inset-inline-start: 5%;
  inset-block-end: 8px;
  color: rgba(255,255,255,.052);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(2.5rem, 7vw, 6rem);
  letter-spacing: .18em;
  white-space: nowrap;
  transform: rotate(-5deg);
  pointer-events: none;
}

.learn-section-body .learn-kicker {
  border-color: rgba(124,214,255,.28);
  background: rgba(124,214,255,.10);
  color: #bfeeff;
}

.learn-section-body .learn-hero h1 {
  color: #fff7df;
}

.learn-section-body .learn-hero p {
  color: rgba(255,255,255,.78);
}

.learn-section-body .learn-tabs {
  margin-top: 24px;
}

.learn-section-body .learn-tab-btn {
  border-color: rgba(255,255,255,.10);
  background: rgba(255,255,255,.045);
  color: rgba(255,255,255,.76);
}

.learn-section-body .learn-tab-btn:hover,
.learn-section-body .learn-tab-btn:focus-visible,
.learn-section-body .learn-tab-btn.is-active {
  color: #fff0ad;
  border-color: rgba(255,224,138,.38);
  background: rgba(255,224,138,.12);
  outline: none;
}

.learn-section-body .learn-lab-card,
.learn-section-body .learn-lab-practice,
.learn-section-body .learn-lab-terms {
  border-color: rgba(255,255,255,.10);
  background:
    radial-gradient(circle at 12% 10%, rgba(124,214,255,.08), transparent 16rem),
    linear-gradient(180deg, rgba(255,255,255,.050), rgba(255,255,255,.020));
  box-shadow: 0 18px 42px rgba(0,0,0,.24), inset 0 1px 0 rgba(255,255,255,.04);
}

.learn-section-body .learn-term-card,
.learn-section-body .learn-quiz-card {
  border-color: rgba(255,255,255,.09);
  background: rgba(255,255,255,.030);
}

.learn-section-body .learn-term-symbol,
.learn-section-body .learn-info-box,
.learn-section-body .learn-tool-row button,
.learn-section-body .learn-action-row button,
.learn-section-body .learn-quiz-options button {
  border-color: rgba(255,224,138,.28);
  background: rgba(255,224,138,.09);
  color: #fff0ad;
}

.learn-section-body .learn-tool-row button:hover,
.learn-section-body .learn-action-row button:hover,
.learn-section-body .learn-quiz-options button:hover,
.learn-section-body .learn-tool-row button:focus-visible,
.learn-section-body .learn-action-row button:focus-visible,
.learn-section-body .learn-quiz-options button:focus-visible,
.learn-term-button:hover,
.learn-term-button:focus-visible,
.learn-term-button.is-active {
  background: rgba(255,224,138,.16);
  border-color: rgba(255,224,138,.42);
  outline: none;
}

.learn-term-grid-buttons {
  align-items: stretch;
}

.learn-term-button {
  width: 100%;
  text-align: start;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  animation: learnClickablePulse 2.8s ease-in-out infinite;
}

.learn-term-button:nth-child(2n) { animation-delay: .35s; }
.learn-term-button:nth-child(3n) { animation-delay: .7s; }

.learn-term-button.is-active {
  box-shadow: 0 14px 30px rgba(255,224,138,.10);
  animation: none;
}

.learn-reading-stage {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  margin: 8px auto 16px;
  max-width: 840px;
  padding: 16px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,.10);
  background:
    radial-gradient(circle at 20% 20%, rgba(255,143,177,.10), transparent 14rem),
    rgba(9,9,11,.28);
}

.learn-reading-stage-meter {
  min-height: 86px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  border: 1px dashed rgba(255,224,138,.24);
  background: rgba(255,255,255,.035);
  color: rgba(255,255,255,.42);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.45rem;
  font-weight: 900;
  transition: all .2s var(--ease);
}

.learn-reading-stage-meter.is-active {
  border-style: solid;
  border-color: rgba(255,224,138,.42);
  background: rgba(255,224,138,.12);
  color: #fff0ad;
  box-shadow: 0 0 22px rgba(255,224,138,.12);
}

.learn-reading-stage-staff {
  position: relative;
  min-height: 150px;
  display: grid;
  align-content: center;
  gap: 13px;
  padding: 22px 18px;
  border-radius: 20px;
  border: 1px dashed rgba(255,255,255,.12);
  background: rgba(255,255,255,.025);
  transition: all .2s var(--ease);
}

.learn-reading-stage-staff.is-highlighted {
  border-style: solid;
  border-color: rgba(124,214,255,.38);
  background: rgba(124,214,255,.07);
}

.learn-reading-stage-staff > span {
  height: 2px;
  border-radius: 999px;
  background: rgba(255,224,138,.40);
}

.learn-reading-stage-clef,
.learn-reading-stage-symbol,
.learn-reading-stage-barline {
  position: absolute;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .2s var(--ease), transform .2s var(--ease), filter .2s var(--ease);
  pointer-events: none;
}

.learn-reading-stage-clef.is-visible,
.learn-reading-stage-symbol.is-visible,
.learn-reading-stage-barline.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: drop-shadow(0 0 12px rgba(255,224,138,.35));
}

.learn-reading-stage-clef {
  right: 22px;
  top: 34px;
  color: #fff0ad;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 5.2rem;
  line-height: 1;
}

.learn-reading-stage-symbol {
  left: 50%;
  top: 50%;
  transform: translate(-50%, calc(-50% + 6px));
  color: #fff0ad;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 4.2rem;
  line-height: 1;
}

.learn-reading-stage-symbol.is-visible {
  transform: translate(-50%, -50%);
}

.learn-reading-stage-barline {
  left: 30px;
  top: 22px;
  bottom: 22px;
  width: 4px;
  border-radius: 999px;
  background: #fff0ad;
}

.learn-reading-example {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  margin: 8px auto 16px;
  max-width: 760px;
  padding: 16px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.10);
  background:
    radial-gradient(circle at 20% 20%, rgba(255,143,177,.10), transparent 14rem),
    rgba(9,9,11,.26);
}

.learn-reading-meter {
  min-width: 72px;
  min-height: 72px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  border: 1px solid rgba(255,224,138,.26);
  background: rgba(255,224,138,.10);
  color: #fff0ad;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.45rem;
  font-weight: 900;
}

.learn-reading-bar {
  min-height: 82px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  gap: 8px;
  padding: 12px;
  border-inline-start: 3px solid rgba(255,224,138,.55);
  border-inline-end: 3px solid rgba(255,224,138,.55);
  background:
    linear-gradient(transparent 47%, rgba(255,224,138,.45) 48%, rgba(255,224,138,.45) 52%, transparent 53%);
}

.learn-reading-bar span {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(255,255,255,.045);
  color: #fff0ad;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.55rem;
  font-weight: 900;
}

.learn-section-body #maqam-interactive-root .learn-click-note,
.learn-section-body #maqam-test-root .learn-click-note,
.learn-section-body #rhythm-interactive-root .learn-click-rhythm,
.learn-section-body #rhythm-interactive-root .learn-meter-click,
.learn-section-body #rhythm-interactive-root .learn-cycle-click {
  filter: drop-shadow(0 0 9px rgba(255,224,138,.18));
  animation: learnSvgClickablePulse 2.45s ease-in-out infinite;
}

.learn-section-body #maqam-interactive-root .learn-click-note:nth-of-type(2n),
.learn-section-body #maqam-test-root .learn-click-note:nth-of-type(2n),
.learn-section-body #rhythm-interactive-root .learn-click-rhythm:nth-of-type(2n) {
  animation-delay: .3s;
}

.learn-section-body #maqam-interactive-root .learn-click-note:nth-of-type(3n),
.learn-section-body #maqam-test-root .learn-click-note:nth-of-type(3n),
.learn-section-body #rhythm-interactive-root .learn-click-rhythm:nth-of-type(3n) {
  animation-delay: .6s;
}

.learn-section-body #maqam-interactive-root .learn-click-note ellipse,
.learn-section-body #maqam-test-root .learn-click-note ellipse,
.learn-section-body #rhythm-interactive-root .learn-click-rhythm ellipse,
.learn-section-body #rhythm-interactive-root .learn-rest-symbol {
  filter: drop-shadow(0 0 7px rgba(255,224,138,.22));
}

.learn-section-body #maqam-interactive-root .learn-click-note:hover,
.learn-section-body #maqam-test-root .learn-click-note:hover,
.learn-section-body #rhythm-interactive-root .learn-click-rhythm:hover,
.learn-section-body #rhythm-interactive-root .learn-meter-click:hover,
.learn-section-body #rhythm-interactive-root .learn-cycle-click:hover {
  filter: drop-shadow(0 0 15px rgba(255,224,138,.34));
  animation: none;
}

@keyframes learnClickablePulse {
  0%, 100% {
    box-shadow: 0 0 0 rgba(255,224,138,0);
    border-color: rgba(255,255,255,.09);
  }
  50% {
    box-shadow: 0 0 18px rgba(255,224,138,.13);
    border-color: rgba(255,224,138,.28);
  }
}

@keyframes learnSvgClickablePulse {
  0%, 100% {
    opacity: .88;
    filter: drop-shadow(0 0 6px rgba(255,224,138,.14));
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 17px rgba(255,224,138,.38));
  }
}

.learn-section-body .learn-next-grid {
  margin-top: 26px;
}

.learn-section-body .learn-next-card {
  border-color: rgba(255,255,255,.10);
  background: linear-gradient(180deg, rgba(255,255,255,.050), rgba(255,255,255,.020));
}

.learn-section-body .learn-next-card:hover,
.learn-section-body .learn-next-card:focus-visible {
  border-color: rgba(255,224,138,.35);
  outline: none;
}

.learn-section-body .site-footer {
  margin-top: 0;
}

@media (max-width: 640px) {
  .learn-section-body .learn-shell {
    width: min(100% - 24px, 1180px);
    padding-top: 28px;
  }

  .learn-section-body .learn-hero {
    border-radius: 24px;
  }

  .learn-section-body .learn-hero::before {
    font-size: 2.7rem;
    inset-inline-start: 0;
  }

  .learn-reading-stage,
  .learn-reading-example {
    grid-template-columns: 1fr;
  }

  .learn-reading-stage-meter,
  .learn-reading-meter {
    width: 100%;
  }

  .learn-reading-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .learn-section-body .learn-tab-btn,
  .learn-section-body .learn-next-card,
  .learn-section-body .learn-tool-row button,
  .learn-section-body .learn-action-row button,
  .learn-section-body .learn-quiz-options button,
  .learn-term-button,
  .learn-section-body #maqam-interactive-root .learn-click-note,
  .learn-section-body #maqam-test-root .learn-click-note,
  .learn-section-body #rhythm-interactive-root .learn-click-rhythm,
  .learn-section-body #rhythm-interactive-root .learn-meter-click,
  .learn-section-body #rhythm-interactive-root .learn-cycle-click {
    transition: none;
    animation: none;
  }
}