@layer base {
  /* ── Post-specific overrides ── */

  /* Void section: amber instead of default violet */
  .void-amber {
    padding: 5rem 2rem;
    background: linear-gradient(180deg, var(--bg), rgba(196, 122, 101, 0.06), var(--bg));
  }

  /* Terminal group (layout wrapper — not in framework) */
  .terminal-group {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-inline-size: 680px;
    padding: 0 2rem;
    margin: 2rem auto;
  }

  /* Animation block container */
  .animation-block {
    inline-size: 100%;
    max-inline-size: 900px;
    padding: 2rem 0;
    margin: 2rem auto;
  }
  .animation-block canvas {
    display: block;
    inline-size: 100%;
    block-size: 400px;
    border-radius: 8px;
  }
  .animation-block .anim-description {
    max-inline-size: 680px;
    padding: 0 2rem;
    margin: 1rem auto 0;
    font-family: var(--body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    text-align: center;
  }
  .animation-block .anim-label {
    margin-block-end: 0.75rem;
    font-family: var(--mono);
    font-size: 0.62rem;
    color: var(--gold-dim);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.15em;
  }

  /* Section accent borders */
  .accent-cyan h2 {
    padding-inline-start: 1rem;
    border-inline-start: 3px solid var(--cyan);
  }
  .accent-gold h2 {
    padding-inline-start: 1rem;
    border-inline-start: 3px solid var(--gold);
  }
  .accent-violet h2 {
    padding-inline-start: 1rem;
    border-inline-start: 3px solid var(--violet);
  }
  .accent-amber h2 {
    padding-inline-start: 1rem;
    border-inline-start: 3px solid rgb(196 122 101);
  }
  .accent-green h2 {
    padding-inline-start: 1rem;
    border-inline-start: 3px solid var(--green);
  }

  /* Crossbar green variant */
  .crossbar-block.green {
    background: linear-gradient(135deg, rgba(123, 196, 127, 0.04), rgba(78, 205, 196, 0.04));
    border-color: rgba(123, 196, 127, 0.15);
  }
  .crossbar-block.green .crossbar-label {
    color: var(--green);
  }
  .crossbar-block.green .crossbar-bridge {
    color: var(--green);
  }

  /* ── Listen Banner ──
       Audio player offering spoken version of the post.
       Follows callout vocabulary: mono label, gold accent, bg-raised.
    */
  .listen-banner {
    max-inline-size: 680px;
    padding: 0 2rem;
    margin: 0 auto;
    opacity: 0;
    animation: fadeUp 1s 1.8s forwards;
  }
  .listen-card {
    display: flex;
    gap: 1.2rem;
    align-items: center;
    padding: 1.5rem 1.8rem;
    background: var(--bg-raised);
    border: 1px solid rgba(212, 168, 83, 0.12);
    border-radius: 10px;
  }
  .listen-play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    inline-size: 48px;
    min-inline-size: 48px;
    block-size: 48px;
    cursor: pointer;
    background: rgba(212, 168, 83, 0.06);
    border: 1.5px solid rgba(212, 168, 83, 0.4);
    border-radius: 50%;
    transition:
      border-color 0.3s,
      background 0.3s,
      transform 0.15s;
  }
  .listen-play-btn:hover {
    background: rgba(212, 168, 83, 0.12);
    border-color: var(--gold);
  }
  .listen-play-btn:active {
    transform: scale(0.95);
  }
  .listen-play-btn svg {
    inline-size: 18px;
    block-size: 18px;
    margin-inline-start: 2px; /* optical centering for play triangle */
    fill: var(--gold); /* optical centering for play triangle */
  }
  .listen-play-btn.playing svg {
    margin-inline-start: 0;
  }
  .listen-play-btn.playing {
    background: rgba(212, 168, 83, 0.15);
    border-color: var(--gold);
    animation: listen-pulse 2s ease-in-out infinite;
  }
  @keyframes listen-pulse {
    0%,
    100% {
      box-shadow: 0 0 0 0 rgba(212, 168, 83, 0.15);
    }
    50% {
      box-shadow: 0 0 0 8px rgba(212, 168, 83, 0);
    }
  }
  .listen-body {
    flex: 1;
    min-inline-size: 0;
  }
  .listen-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-block-end: 0.6rem;
  }
  .listen-label {
    font-family: var(--mono);
    font-size: 0.62rem;
    font-weight: 500;
    color: var(--gold-dim);
    text-transform: uppercase;
    letter-spacing: 0.18em;
  }
  .listen-narrator {
    font-family: var(--mono);
    font-size: 0.58rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
  }
  .listen-progress {
    position: relative;
    inline-size: 100%;
    block-size: 3px;
    margin-block-end: 0.5rem;
    cursor: pointer;
    background: rgba(196, 200, 212, 0.08);
    border-radius: 2px;
  }
  .listen-progress-fill {
    position: relative;
    inline-size: 0%;
    block-size: 100%;
    background: var(--gold);
    border-radius: 2px;
    transition: width 0.1s linear;
  }
  .listen-progress-fill::after {
    position: absolute;
    inset-block-start: -3px;
    inset-inline-end: -4px;
    inline-size: 9px;
    block-size: 9px;
    content: "";
    background: var(--gold);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s;
  }
  .listen-progress:hover .listen-progress-fill::after {
    opacity: 1;
  }
  .listen-time {
    display: flex;
    justify-content: space-between;
    font-family: var(--mono);
    font-size: 0.58rem;
    color: var(--text-dim);
    letter-spacing: 0.08em;
  }
  .listen-or {
    margin-block-start: 0.8rem;
    font-family: var(--body);
    font-size: 0.82rem;
    font-style: italic;
    color: var(--text-dim);
    text-align: center;
  }

  /* Spacing and alignment that were inline styles */
  .tempo-jo.lede {
    padding-block-end: 0;
  }
  .prose .lede-last {
    margin-block-end: 0;
  }
  .explore-row {
    text-align: center;
  }
  .terminal-block .terminal-header.spaced {
    margin-block-start: 0.5rem;
  }
  .equation.equation-end {
    margin-block-end: 2rem;
  }
  .post-footer .footer-credit {
    font-size: 0.8rem;
    color: var(--text-dim);
  }

  /* Responsive */
  @media (max-width: 600px) {
    .animation-block canvas {
      block-size: 280px;
    }
    .terminal-group {
      padding: 0 1.2rem;
    }
    .void-amber {
      padding: 3rem 1.2rem;
    }
    .listen-banner {
      padding: 0 1.2rem;
    }
    .listen-card {
      gap: 1rem;
      padding: 1.2rem;
    }
    .listen-play-btn {
      inline-size: 42px;
      min-inline-size: 42px;
      block-size: 42px;
    }
    .listen-play-btn svg {
      inline-size: 15px;
      block-size: 15px;
    }
  }
}