/* Metrovy — Visual Diagrams, Audio Buttons & Author Profile Styles */

.audio-demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--s2);
  border: 1px solid var(--amber-d);
  border-radius: var(--radius-sm);
  color: var(--amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 10px 0 16px;
}

.audio-demo-btn:hover {
  background: var(--amber-glow2);
  border-color: var(--amber);
  transform: translateY(-1px);
}

.audio-demo-btn.playing-demo {
  background: var(--amber);
  color: #0d0d0c;
  box-shadow: 0 0 14px var(--amber-glow);
}

.audio-demo-btn svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* Visual TAB & Notation Cards */
.diagram-card {
  background: var(--s1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 24px 0;
  position: relative;
  overflow: hidden;
}

.diagram-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.diagram-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.diagram-body {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text);
  overflow-x: auto;
  padding: 10px 0;
}

.tab-block {
  background: var(--s2);
  border-radius: 6px;
  padding: 14px;
  color: var(--amber-l);
  white-space: pre;
  font-size: 0.85rem;
  line-height: 1.35;
  border: 1px solid var(--border);
}

/* Author Profile Section (E-E-A-T) */
.author-card-full {
  background: var(--s1);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 28px;
  margin: 32px 0;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

@media (max-width: 640px) {
  .author-card-full {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

.author-avatar-wrap {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber-d), var(--amber));
  padding: 3px;
  flex-shrink: 0;
}

.author-avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: var(--s3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--amber);
}

.author-info-wrap h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.45rem;
  color: var(--text);
  margin-bottom: 4px;
}

.author-role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.author-bio {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 14px;
}

.author-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.cred-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  padding: 4px 10px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-muted);
}

/* Printable Practice Sheet Styles */
.print-btn-wrap {
  margin: 18px 0;
  display: flex;
  gap: 12px;
  align-items: center;
}

.print-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--amber-d), var(--amber));
  color: #000;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: 0 4px 14px var(--amber-glow);
  transition: transform 0.2s ease;
}

.print-btn:hover {
  transform: translateY(-2px);
}

@media print {
  body {
    background: #fff !important;
    color: #000 !important;
  }

  header, footer, .ad-section, .toc, .cta-box, .print-btn-wrap, .theme-btn, .header-right {
    display: none !important;
  }

  .wrapper {
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .article-hero h1 {
    color: #000 !important;
  }

  .bpm-table {
    border: 1px solid #000 !important;
    color: #000 !important;
  }

  .bpm-table th, .bpm-table td {
    border: 1px solid #ccc !important;
    color: #000 !important;
  }

  .info-box, .diagram-card, .tip-card {
    border: 1px solid #999 !important;
    background: #f9f9f9 !important;
    color: #000 !important;
  }
}