/*
Theme Name: Music Psychology
Theme URI: https://www.music-psychology.de/
Author: Music Psychology Editorial
Description: Bespoke editorial theme for music-psychology.de — the session-notes-archive archetype.
Version: 1.0.0
Requires at least: 6.4
Tested up to: 6.9
Requires PHP: 8.0
Text Domain: mp
*/

/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
  /* Ground */
  --mp-ink: #161616;
  --mp-panel: #1f1f1f;
  --mp-panel-alt: #262626;
  --mp-line: #3a3a3a;
  --mp-line-soft: #2c2c2c;

  /* Paper (light content panels) */
  --mp-paper: #f6f3ee;
  --mp-paper-ink: #1c1a17;
  --mp-paper-muted: #6b6459;

  /* Accents */
  --mp-crimson: #e74c3c;
  --mp-crimson-dim: #b83a2d;
  --mp-crimson-glow: rgba(231, 76, 60, 0.28);
  --mp-cobalt: #2964a0;
  --mp-cobalt-bright: #4a8fd4;
  --mp-cobalt-glow: rgba(41, 100, 160, 0.32);

  /* Text on dark */
  --mp-text: #f1efe9;
  --mp-text-muted: #a6a099;
  --mp-text-faint: #726c64;

  /* Type */
  --mp-font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --mp-font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mp-font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* Rhythm */
  --mp-radius: 2px;
  --mp-gutter: clamp(1.25rem, 3vw, 2.5rem);
  --mp-content-max: 1240px;
  --mp-reading-max: 760px;
}

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; overflow-x: hidden; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}
body { margin: 0; }
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, h5, p, figure { margin: 0; }

/* ==========================================================================
   Fonts (self-hosted)
   ========================================================================== */
@font-face { font-family: "Playfair Display"; src: url("fonts/playfair-display-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Playfair Display"; src: url("fonts/playfair-display-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Playfair Display"; src: url("fonts/playfair-display-900.woff2") format("woff2"); font-weight: 900; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-600.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

/* ==========================================================================
   Base
   ========================================================================== */
body {
  background: var(--mp-ink);
  color: var(--mp-text);
  font-family: var(--mp-font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
}

.mp-wrap {
  max-width: var(--mp-content-max);
  margin-inline: auto;
  padding-inline: var(--mp-gutter);
}

h1, h2, h3, h4 {
  font-family: var(--mp-font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.mp-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--mp-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mp-crimson);
}
.mp-eyebrow::before {
  content: "";
  width: 1.4em;
  height: 1px;
  background: currentColor;
}

/* ==========================================================================
   Header / masthead
   ========================================================================== */
.mp-masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(22, 22, 22, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--mp-line-soft);
}
.mp-masthead__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.9rem;
}
.mp-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.mp-brand__mark { width: 34px; height: 34px; flex-shrink: 0; }
.mp-brand__word {
  font-family: var(--mp-font-display);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--mp-text);
  white-space: nowrap;
}
.mp-brand__word span { color: var(--mp-crimson); }

.mp-nav { display: flex; gap: 1.75rem; }
.mp-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--mp-text-muted);
  position: relative;
  padding-block: 0.3rem;
  transition: color 0.2s ease;
}
.mp-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--mp-crimson);
  transition: right 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.mp-nav a:hover { color: var(--mp-text); }
.mp-nav a:hover::after { right: 0; }

.mp-nav-toggle { display: none; background: none; border: 0; color: var(--mp-text); }

@media (max-width: 780px) {
  .mp-nav { display: none; }
  .mp-nav-toggle { display: inline-flex; }
  .mp-nav.is-open {
    display: flex;
    position: absolute;
    inset-inline: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    background: var(--mp-panel);
    border-bottom: 1px solid var(--mp-line-soft);
  }
  .mp-nav.is-open a { padding: 0.9rem var(--mp-gutter); border-top: 1px solid var(--mp-line-soft); }
}

/* ==========================================================================
   Pulse-line divider — a REAL waveform (Chopin, Waltz in A minor, B.150,
   public domain / Wikimedia Commons), not a decorative drawn line.
   ========================================================================== */
.mp-pulse-divider {
  width: 100%;
  max-width: var(--mp-content-max);
  margin-inline: auto;
  padding-inline: var(--mp-gutter);
  height: 56px;
  margin-block: clamp(1.5rem, 4vw, 2.75rem);
  overflow: hidden;
}
.mp-pulse-divider svg { width: 100%; height: 100%; display: block; overflow: visible; }
.mp-wave-bar {
  fill: var(--mp-crimson);
  transform-box: fill-box;
  transform-origin: center;
  transform: scaleY(0.05);
  opacity: 0.35;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.5s ease;
  transition-delay: var(--mp-bar-delay, 0s);
}
.mp-pulse-divider--cobalt .mp-wave-bar { fill: var(--mp-cobalt-bright); }
.mp-pulse-divider.is-visible .mp-wave-bar { transform: scaleY(1); opacity: 1; }

/* ==========================================================================
   Session cards (big image-led cards — the topic-card-grid replacement)
   ========================================================================== */
.mp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(1.25rem, 2.5vw, 2rem);
}
.mp-grid--feature { grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }

.mp-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--mp-panel);
  border: 1px solid var(--mp-line-soft);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s ease;
}
.mp-card:hover { transform: translateY(-4px); border-color: var(--mp-crimson-dim); }

.mp-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--mp-panel-alt);
}
.mp-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.mp-card:hover .mp-card__media img { transform: scale(1.045); }

.mp-card__index {
  position: absolute;
  top: 0.85rem; left: 0.85rem;
  font-family: var(--mp-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--mp-text);
  background: rgba(22, 22, 22, 0.72);
  border: 1px solid rgba(241, 239, 233, 0.25);
  padding: 0.2rem 0.5rem;
  backdrop-filter: blur(4px);
}

.mp-card__body { padding: 1.35rem 1.4rem 1.6rem; display: flex; flex-direction: column; gap: 0.65rem; flex: 1; }
.mp-card__silo { font-family: var(--mp-font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mp-cobalt-bright); }
.mp-card__title { font-size: 1.28rem; line-height: 1.28; }
.mp-card__title a::after { content: ""; position: absolute; inset: 0; }
.mp-card__excerpt { color: var(--mp-text-muted); font-size: 0.95rem; }
.mp-card__meta { margin-top: auto; padding-top: 0.75rem; display: flex; align-items: center; gap: 0.6rem; font-family: var(--mp-font-mono); font-size: 0.72rem; color: var(--mp-text-faint); }

/* ==========================================================================
   Hero
   ========================================================================== */
.mp-hero {
  position: relative;
  min-height: min(78vh, 640px);
  display: flex;
  align-items: flex-end;
  border-bottom: 1px solid var(--mp-line-soft);
}
.mp-hero__media { position: absolute; inset: 0; z-index: 0; }
.mp-hero__media img { width: 100%; height: 100%; object-fit: cover; }
.mp-hero__media::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(22,22,22,0.05) 0%, rgba(22,22,22,0.35) 55%, rgba(22,22,22,0.88) 100%),
    linear-gradient(90deg, rgba(22,22,22,0.5) 0%, rgba(22,22,22,0.05) 55%);
}
.mp-hero__content { position: relative; z-index: 1; padding-block: clamp(2.5rem, 8vw, 5rem); max-width: 760px; }
.mp-hero__title { font-size: clamp(2rem, 4.6vw, 3.3rem); color: var(--mp-text); }
.mp-hero__lede { margin-top: 1rem; font-size: 1.15rem; color: var(--mp-text-muted); max-width: 56ch; }

/* ==========================================================================
   Citation-pin links (inline body links)
   ========================================================================== */
.mp-article a:not(.mp-btn) {
  color: var(--mp-crimson);
  border-bottom: 1px solid transparent;
  padding-right: 1.1em;
  position: relative;
  transition: border-color 0.2s ease;
}
.mp-article a:not(.mp-btn):hover { border-color: var(--mp-crimson); }
.mp-article a:not(.mp-btn)::after {
  counter-increment: mp-citation;
  content: counter(mp-citation);
  position: absolute;
  right: 0; top: -0.35em;
  font-family: var(--mp-font-mono);
  font-size: 0.62em;
  color: var(--mp-cobalt-bright);
  border: 1px solid var(--mp-cobalt);
  border-radius: 50%;
  width: 1.5em; height: 1.5em;
  display: inline-flex; align-items: center; justify-content: center;
  line-height: 1;
}
.mp-article { counter-reset: mp-citation; }

/* ==========================================================================
   Article / cornerstone layout
   ========================================================================== */
.mp-article-shell {
  background: var(--mp-paper);
  color: var(--mp-paper-ink);
  position: relative;
}
.mp-article-shell__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 130px;
  opacity: 0.22;
  pointer-events: none;
  background-repeat: repeat-y;
  background-position: center top;
  background-size: 64px 160px;
  -webkit-mask-image: linear-gradient(180deg, transparent 0, black 10%, black 90%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0, black 10%, black 90%, transparent 100%);
}
.mp-article-shell__rail--left {
  left: 0;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2096%20240%22%3E%3Crect%20x%3D%224%22%20y%3D%22100%22%20width%3D%228%22%20height%3D%2240%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2216%22%20y%3D%2275%22%20width%3D%228%22%20height%3D%2290%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2228%22%20y%3D%2290%22%20width%3D%228%22%20height%3D%2260%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2240%22%20y%3D%2250%22%20width%3D%228%22%20height%3D%22140%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2252%22%20y%3D%2285%22%20width%3D%228%22%20height%3D%2270%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2264%22%20y%3D%2265%22%20width%3D%228%22%20height%3D%22110%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2276%22%20y%3D%2295%22%20width%3D%228%22%20height%3D%2250%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3Crect%20x%3D%2288%22%20y%3D%2270%22%20width%3D%228%22%20height%3D%22100%22%20rx%3D%224%22%20fill%3D%22%23e74c3c%22%2F%3E%3C%2Fsvg%3E");
}
.mp-article-shell__rail--right {
  right: 0;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2096%20240%22%3E%3Crect%20x%3D%224%22%20y%3D%22100%22%20width%3D%228%22%20height%3D%2240%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2216%22%20y%3D%2275%22%20width%3D%228%22%20height%3D%2290%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2228%22%20y%3D%2290%22%20width%3D%228%22%20height%3D%2260%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2240%22%20y%3D%2250%22%20width%3D%228%22%20height%3D%22140%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2252%22%20y%3D%2285%22%20width%3D%228%22%20height%3D%2270%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2264%22%20y%3D%2265%22%20width%3D%228%22%20height%3D%22110%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2276%22%20y%3D%2295%22%20width%3D%228%22%20height%3D%2250%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3Crect%20x%3D%2288%22%20y%3D%2270%22%20width%3D%228%22%20height%3D%22100%22%20rx%3D%224%22%20fill%3D%22%234a8fd4%22%2F%3E%3C%2Fsvg%3E");
}
@media (max-width: 1500px) { .mp-article-shell__rail { display: none; } }
.mp-article-layout {
  display: grid;
  justify-content: center;
  grid-template-columns: minmax(0, var(--mp-reading-max)) minmax(220px, 300px);
  gap: clamp(2rem, 4vw, 4rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}
@media (max-width: 980px) { .mp-article-layout { grid-template-columns: 1fr; } }

.mp-article { font-size: 1.08rem; line-height: 1.75; }
.mp-article h2 { font-size: 1.65rem; margin-top: 2.4em; margin-bottom: 0.6em; }
.mp-article h3 { font-size: 1.3rem; margin-top: 2em; margin-bottom: 0.5em; font-family: var(--mp-font-body); font-weight: 700; }
.mp-article p { margin-bottom: 1.3em; }
.mp-article ul, .mp-article ol { margin: 0 0 1.3em; list-style: disc; padding-left: 1.3em; }
.mp-article ol { list-style: decimal; }
.mp-article blockquote {
  position: relative;
  margin: 2.75em auto;
  padding: 0.3em 1.5em;
  max-width: 46ch;
  text-align: center;
  font-family: var(--mp-font-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  line-height: 1.35;
  color: var(--mp-paper-ink);
}
.mp-article blockquote::before,
.mp-article blockquote::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 3px;
  margin: 0 auto 1rem;
  background: linear-gradient(90deg, var(--mp-crimson), var(--mp-cobalt-bright));
}
.mp-article blockquote::after { margin: 1rem auto 0; }
.mp-article blockquote p { margin: 0; }

.mp-case-file {
  position: sticky;
  top: 6.5rem;
  align-self: start;
  font-family: var(--mp-font-mono);
  font-size: 0.72rem;
  color: var(--mp-paper-muted);
  border-left: 1px solid rgba(28, 26, 23, 0.15);
  padding-left: 1.25rem;
}
.mp-case-file dt { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.62rem; color: var(--mp-crimson-dim); margin-top: 0.6rem; }
.mp-case-file dt:first-child { margin-top: 0; }
.mp-case-file dd { margin: 0.15rem 0 0; color: var(--mp-paper-ink); }

/* ==========================================================================
   Reading-progress bar
   ========================================================================== */
.mp-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60; background: transparent; pointer-events: none; }
.mp-progress__bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--mp-crimson), var(--mp-cobalt-bright)); }
@media (prefers-reduced-motion: no-preference) { .mp-progress__bar { transition: width 0.15s linear; } }

/* ==========================================================================
   In-page table of contents (sidebar)
   ========================================================================== */
.mp-toc { margin-bottom: 1.1rem; padding-bottom: 1rem; border-bottom: 1px solid rgba(28, 26, 23, 0.15); }
.mp-toc__title { font-family: var(--mp-font-mono); font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--mp-crimson-dim); margin: 0 0 0.55rem; }
.mp-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: mp-toc; display: flex; flex-direction: column; gap: 0.35rem; }
.mp-toc li { counter-increment: mp-toc; }
.mp-toc a { display: flex; gap: 0.5rem; font-family: var(--mp-font-body); font-size: 0.78rem; line-height: 1.3; color: var(--mp-paper-muted); text-decoration: none; transition: color 0.15s ease; }
.mp-toc a::before {
  content: counter(mp-toc, decimal-leading-zero);
  font-family: var(--mp-font-mono);
  font-size: 0.66rem;
  color: var(--mp-text-faint);
  flex-shrink: 0;
  padding-top: 0.1rem;
}
.mp-toc a:hover { color: var(--mp-crimson-dim); }
.mp-toc a.is-active { color: var(--mp-crimson-dim); font-weight: 600; }
.mp-toc a.is-active::before { color: var(--mp-crimson); }

/* ==========================================================================
   Infographic embed
   ========================================================================== */
.mp-infographic { margin: 2.5em 0; }
.mp-infographic img { width: 100%; height: auto; border: 1px solid rgba(28, 26, 23, 0.15); }
.mp-infographic figcaption { margin-top: 0.6rem; font-size: 0.82rem; color: var(--mp-paper-muted); font-family: var(--mp-font-mono); }
.mp-infographic details { margin-top: 0.5rem; }
.mp-infographic summary { cursor: pointer; color: var(--mp-crimson-dim); font-weight: 600; }
.mp-infographic textarea { width: 100%; margin-top: 0.5rem; font-family: var(--mp-font-mono); font-size: 0.72rem; padding: 0.6rem; border: 1px solid rgba(28, 26, 23, 0.2); background: #efe9df; color: var(--mp-paper-ink); resize: vertical; }

/* ==========================================================================
   Inline article figure (supporting photo mid-article)
   ========================================================================== */
.mp-figure { margin: 2.75em 0; }
.mp-figure img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.mp-figure figcaption {
  margin-top: 0.65rem;
  font-family: var(--mp-font-mono);
  font-size: 0.8rem;
  color: var(--mp-paper-muted);
  border-left: 2px solid var(--mp-crimson);
  padding-left: 0.75rem;
}

/* ==========================================================================
   Contact form
   ========================================================================== */
.mp-contact-form { max-width: 44ch; }
.mp-contact-form p { margin-bottom: 1.1em; }
.mp-contact-form label { display: block; font-weight: 700; margin-bottom: 0.35em; font-size: 0.92rem; }
.mp-contact-form input[type="text"],
.mp-contact-form input[type="email"],
.mp-contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(28, 26, 23, 0.25);
  background: #efe9df;
  color: var(--mp-paper-ink);
  font-family: var(--mp-font-body);
  font-size: 0.98rem;
}
.mp-contact-form textarea { resize: vertical; }
.mp-contact-form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.mp-contact-notice { padding: 0.85rem 1rem; margin-bottom: 1.5rem; border: 1px solid; font-size: 0.95rem; }
.mp-contact-notice--ok { border-color: #3f7a55; color: #2c5b3e; background: rgba(63, 122, 85, 0.08); }
.mp-contact-notice--error { border-color: var(--mp-crimson-dim); color: var(--mp-crimson-dim); background: rgba(231, 76, 60, 0.08); }

/* ==========================================================================
   FAQ (details/summary — Gate 15)
   ========================================================================== */
.mp-faq { margin: 2.5em 0 1em; }
.mp-faq h2 { margin-top: 0 !important; }
.mp-faq__item {
  border-bottom: 1px solid rgba(28, 26, 23, 0.15);
  padding: 1rem 0;
}
.mp-faq__item summary {
  cursor: pointer;
  font-weight: 700;
  font-family: var(--mp-font-body);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.mp-faq__item summary h3 {
  font: inherit;
  margin: 0;
}
.mp-faq__item summary::-webkit-details-marker { display: none; }
.mp-faq__item summary::after {
  content: "+";
  font-family: var(--mp-font-mono);
  color: var(--mp-crimson-dim);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.mp-faq__item[open] summary::after { content: "\2212"; }
.mp-faq__item > div { padding-top: 0.75rem; color: var(--mp-paper-ink); }
.mp-faq__item > div p:last-child { margin-bottom: 0; }

/* ==========================================================================
   Listening exhibit (embedded audio card-flip)
   ========================================================================== */
.mp-exhibit {
  margin: 2.5em 0;
  perspective: 1400px;
}
.mp-exhibit__inner {
  position: relative;
  min-height: 190px;
  transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
  transform-style: preserve-3d;
}
.mp-exhibit.is-open .mp-exhibit__inner { transform: rotateY(180deg); }
.mp-exhibit__face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  border: 1px solid rgba(28, 26, 23, 0.18);
  background: #efe9df;
  padding: 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.mp-exhibit__face--back { transform: rotateY(180deg); background: var(--mp-ink); border-color: var(--mp-line); }
.mp-exhibit__label { font-family: var(--mp-font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mp-crimson-dim); }
.mp-exhibit__title { font-family: var(--mp-font-display); font-size: 1.2rem; font-weight: 700; }
.mp-exhibit__btn {
  align-self: flex-start;
  margin-top: 0.4rem;
  border: 1px solid var(--mp-crimson-dim);
  color: var(--mp-crimson-dim);
  background: transparent;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
}
.mp-exhibit__btn:hover { background: var(--mp-crimson-dim); color: var(--mp-paper); }
.mp-exhibit__face--back iframe { width: 100%; height: 152px; border: 0; }
.mp-exhibit__close { align-self: flex-end; color: var(--mp-text-muted); font-family: var(--mp-font-mono); font-size: 0.75rem; background: none; border: 0; }

/* ==========================================================================
   Ambient homepage background music
   ========================================================================== */
.mp-ambient {
  position: fixed;
  right: clamp(1rem, 4vw, 1.75rem);
  bottom: clamp(1rem, 4vw, 1.75rem);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.mp-ambient__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--mp-line-soft);
  background: rgba(22, 22, 22, 0.82);
  backdrop-filter: blur(6px);
  color: var(--mp-text-faint);
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.mp-ambient__toggle:hover { color: var(--mp-paper); border-color: var(--mp-cobalt-bright); }
.mp-ambient__icon-off { display: block; }
.mp-ambient__icon-on { display: none; }
.mp-ambient.is-playing .mp-ambient__toggle {
  color: var(--mp-crimson);
  border-color: var(--mp-crimson-dim);
  box-shadow: 0 0 0 0 var(--mp-crimson-glow);
  animation: mp-ambient-pulse 2.6s ease-out infinite;
}
.mp-ambient.is-playing .mp-ambient__icon-off { display: none; }
.mp-ambient.is-playing .mp-ambient__icon-on { display: block; }
@keyframes mp-ambient-pulse {
  0% { box-shadow: 0 0 0 0 var(--mp-crimson-glow); }
  70% { box-shadow: 0 0 0 10px rgba(231, 76, 60, 0); }
  100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); }
}
.mp-ambient__credit {
  margin: 0;
  max-width: 15ch;
  font-family: var(--mp-font-mono);
  font-size: 0.68rem;
  line-height: 1.3;
  color: var(--mp-text-faint);
  opacity: 0;
  transform: translateX(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.mp-ambient:hover .mp-ambient__credit { opacity: 1; transform: translateX(0); }
@media (max-width: 620px) {
  .mp-ambient__credit { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .mp-ambient.is-playing .mp-ambient__toggle { animation: none; }
}

/* ==========================================================================
   Mood matcher tool
   ========================================================================== */
.mp-matcher {
  background: var(--mp-panel);
  border: 1px solid var(--mp-line-soft);
  padding: clamp(1.5rem, 4vw, 2.75rem);
}
.mp-matcher__goals { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.85rem; margin-top: 1.5rem; }
.mp-matcher__goal {
  border: 1px solid var(--mp-line);
  background: var(--mp-panel-alt);
  color: var(--mp-text);
  padding: 1.1rem 0.9rem;
  text-align: center;
  font-weight: 600;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.mp-matcher__goal:hover { border-color: var(--mp-cobalt-bright); }
.mp-matcher__goal.is-active { border-color: var(--mp-crimson); background: linear-gradient(180deg, rgba(231,76,60,0.14), transparent); }
.mp-matcher__result {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--mp-line);
  display: none;
}
.mp-matcher__result.is-visible { display: grid; grid-template-columns: 1fr; gap: 0.75rem; }
.mp-matcher__result h4 { color: var(--mp-crimson); font-size: 1.4rem; }
.mp-matcher__result a.mp-btn { margin-top: 0.5rem; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.mp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background: var(--mp-crimson);
  color: #fff;
  padding: 0.75rem 1.4rem;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid var(--mp-crimson);
  transition: background 0.2s ease, color 0.2s ease;
}
.mp-btn:hover { background: transparent; color: var(--mp-crimson); }
.mp-btn--ghost { background: transparent; color: var(--mp-text); border-color: var(--mp-line); }
.mp-btn--ghost:hover { border-color: var(--mp-cobalt-bright); color: var(--mp-cobalt-bright); }

/* ==========================================================================
   Footer
   ========================================================================== */
.mp-footer { background: var(--mp-panel); border-top: 1px solid var(--mp-line-soft); padding-block: 3rem 2rem; margin-top: 4rem; }
.mp-footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 2rem; }
@media (max-width: 780px) { .mp-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.mp-footer__heading { font-family: var(--mp-font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mp-text-faint); margin-bottom: 0.9rem; }
.mp-footer__links li { margin-bottom: 0.5rem; }
.mp-footer__links a { color: var(--mp-text-muted); font-size: 0.92rem; }
.mp-footer__links a:hover { color: var(--mp-text); }
.mp-footer__bottom { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--mp-line-soft); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem; font-family: var(--mp-font-mono); font-size: 0.75rem; color: var(--mp-text-faint); }

/* ==========================================================================
   Utility
   ========================================================================== */
.mp-visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.mp-section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.mp-section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap; }
.mp-section__title { font-size: clamp(1.6rem, 3vw, 2.2rem); }

.mp-approach { display: grid; grid-template-columns: minmax(0, var(--mp-reading-max)) minmax(240px, 320px); gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.mp-approach__text { display: flex; flex-direction: column; gap: 1.1rem; color: var(--mp-text-muted); }
.mp-approach__facts { background: var(--mp-panel); border: 1px solid var(--mp-line-soft); padding: 1.6rem 1.7rem; }
.mp-approach__facts h3 { font-size: 0.98rem; margin: 0 0 1.1rem; }
.mp-approach__facts ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.95rem; }
.mp-approach__facts li { position: relative; padding-left: 1.1rem; font-size: 0.92rem; line-height: 1.5; color: var(--mp-text-muted); }
.mp-approach__facts li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 6px; height: 6px; background: var(--mp-crimson); }
@media (max-width: 980px) { .mp-approach { grid-template-columns: 1fr; } }