/* ============================================================
   Global overrides
   ============================================================ */
section#advancing-neurofeedback-in-tinnitus > h1 {
    color: #191970 !important;
}

/* ============================================================
   Visualization page — dark-card design system
   ============================================================ */

/* ---------- Hero ---------- */
.viz-hero {
    background: linear-gradient(135deg, #0d1117 0%, #161b22 60%, #1c2128 100%);
    border: 1px solid #30363d;
    border-radius: 16px;
    padding: 40px 48px;
    margin: 24px 0 32px;
    position: relative;
    overflow: hidden;
}
.viz-hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3fb950 0%, #58a6ff 33%, #a371f7 66%, #ff9800 100%);
}
.viz-hero-title {
    color: #e6edf3;
    font-size: 1.85rem;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0 0 8px;
    letter-spacing: -0.4px;
}
.viz-hero-subtitle {
    color: #8b949e;
    font-size: 1rem;
    line-height: 1.65;
    margin: 0 0 28px;
    max-width: 560px;
}
.viz-stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.viz-stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: #21262d;
    border: 1px solid #30363d;
    border-radius: 100px;
    padding: 6px 14px;
    font-size: 13px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #e6edf3;
    font-weight: 500;
}
.viz-stat-pill .sdot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}

/* ---------- Overview Grid ---------- */
.viz-overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin: 0 0 40px;
}
.viz-grid-card {
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 12px;
    padding: 18px 20px;
    transition: border-color 0.2s, transform 0.18s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}
.viz-grid-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
}
.viz-grid-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.45);
}
.cat-stream::before { background: #3fb950; }
.cat-erp::before    { background: #58a6ff; }
.cat-brain::before  { background: #a371f7; }
.cat-tfr::before    { background: #ff9800; }
.cat-stream:hover   { border-color: #3fb950; }
.cat-erp:hover      { border-color: #58a6ff; }
.cat-brain:hover    { border-color: #a371f7; }
.cat-tfr:hover      { border-color: #ff9800; }
.viz-grid-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
    display: block;
    line-height: 1;
}
.viz-grid-name {
    color: #e6edf3;
    font-size: 14.5px;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0 0 5px;
}
.viz-grid-desc {
    color: #8b949e;
    font-size: 11.5px;
    line-height: 1.5;
    margin: 0 0 12px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.viz-grid-tag {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 100px;
    font-size: 10.5px;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0.2px;
}
.tag-stream { background: #0f3d1a; color: #3fb950; }
.tag-erp    { background: #0d2645; color: #58a6ff; }
.tag-brain  { background: #2d1b69; color: #a371f7; }
.tag-tfr    { background: #3d2000; color: #ff9800; }

/* ---------- Tab cards ---------- */
.viz-tab-card {
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 4px;
}
.viz-tab-header {
    padding: 22px 26px 18px;
    border-bottom: 1px solid #30363d;
    background: #161b22;
}
.viz-tab-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.viz-tab-icon {
    font-size: 1.6rem;
    line-height: 1;
    flex-shrink: 0;
}
.viz-tab-title {
    color: #e6edf3;
    font-size: 1.15rem;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
}
.viz-tab-subtitle {
    color: #8b949e;
    font-size: 13px;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-style: italic;
}
.viz-badges {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.viz-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 10.5px;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    border: 1px solid;
}
.badge-rt     { background: #0f3d1a; color: #3fb950; border-color: #1a5228; }
.badge-erp    { background: #0d2645; color: #58a6ff; border-color: #1a3c6e; }
.badge-3d     { background: #2d1b69; color: #a371f7; border-color: #4a2d9e; }
.badge-dark   { background: #21262d; color: #8b949e; border-color: #30363d; }
.badge-new    { background: #3d2000; color: #ff9800; border-color: #6b3a00; }
.badge-thread { background: #0e2a0e; color: #56d364; border-color: #1e4a1e; }
.badge-stream { background: #1a2d0e; color: #a5d6a7; border-color: #2e5016; }

/* ---------- Tab body ---------- */
.viz-tab-body {
    padding: 22px 26px;
}
.viz-tab-desc {
    color: #c9d1d9;
    font-size: 13.5px;
    line-height: 1.75;
    margin: 0 0 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.viz-feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 20px;
    margin: 0 0 22px;
}
.viz-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 7px;
    color: #8b949e;
    font-size: 12.5px;
    line-height: 1.55;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    padding: 3px 0;
}
.viz-fi-icon {
    color: #3fb950;
    flex-shrink: 0;
    font-size: 13px;
    margin-top: 1px;
    font-style: normal;
}
.viz-fi-text { flex: 1; }
.viz-fi-text strong { color: #e6edf3; font-weight: 600; }

/* ---------- Code snippet ---------- */
.viz-code-wrap {
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: 9px;
    overflow: hidden;
    margin: 0 0 20px;
}
.viz-code-label {
    background: #161b22;
    border-bottom: 1px solid #30363d;
    color: #58a6ff;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 7px 14px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.viz-code-inner {
    padding: 14px 18px;
    font-family: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", monospace;
    font-size: 12px;
    line-height: 1.7;
    margin: 0;
    white-space: pre;
    overflow-x: auto;
    color: #e6edf3;
}
.ck { color: #ff7b72; }   /* keyword */
.cf { color: #d2a8ff; }   /* function/method */
.cs { color: #a5d6ff; }   /* string */
.cn { color: #79c0ff; }   /* number/const */
.cc { color: #8b949e; font-style: italic; }  /* comment */
.cx { color: #ffa657; }   /* class name */

/* ---------- Video / Image ---------- */
.viz-media-wrap {
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #30363d;
    margin: 0 0 20px;
    background: #0d1117;
    position: relative;
}
.viz-media-label {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(13,17,23,0.85);
    color: #8b949e;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    border: 1px solid #30363d;
    z-index: 1;
}
.viz-media-wrap video,
.viz-media-wrap img {
    display: block;
    width: 100%;
}

/* ---------- Section dividers ---------- */
.viz-section-hdr {
    color: #e6edf3;
    font-size: 1.05rem;
    font-weight: 700;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 44px 0 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid #30363d;
    display: flex;
    align-items: center;
    gap: 10px;
}
.viz-section-hdr::after {
    content: "";
    flex: 1;
    height: 1px;
    background: #30363d;
}

/* ---------- Comparison Table ---------- */
.viz-cmp-wrap {
    overflow-x: auto;
    margin: 0 0 40px;
    border: 1px solid #30363d;
    border-radius: 12px;
}
.viz-cmp-table {
    width: 100%;
    border-collapse: collapse;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 12px;
    background: #161b22;
}
.viz-cmp-table th {
    background: #21262d;
    color: #e6edf3;
    font-weight: 700;
    padding: 11px 10px;
    text-align: center;
    border-bottom: 1px solid #30363d;
    border-right: 1px solid #30363d;
    white-space: nowrap;
    font-size: 11.5px;
}
.viz-cmp-table th:first-child {
    text-align: left;
    min-width: 175px;
    padding-left: 16px;
}
.viz-cmp-table td {
    padding: 9px 10px;
    text-align: center;
    border-bottom: 1px solid #21262d;
    border-right: 1px solid #21262d;
    color: #8b949e;
}
.viz-cmp-table td:first-child {
    text-align: left;
    color: #c9d1d9;
    font-weight: 500;
    background: #161b22;
    border-right: 1px solid #30363d;
    padding-left: 16px;
}
.viz-cmp-table tr:last-child td { border-bottom: none; }
.viz-cmp-table th:last-child,
.viz-cmp-table td:last-child { border-right: none; }
.viz-cmp-table tbody tr:hover td { background: #1c2128; }
.viz-cmp-table tbody tr:hover td:first-child { background: #1c2128; }
.cmp-yes  { color: #3fb950; font-size: 15px; font-weight: 700; }
.cmp-part { color: #ff9800; font-size: 13px; }
.cmp-no   { color: #30363d; font-size: 13px; }

/* ---------- Category row headings ---------- */
.viz-cmp-table .cmp-cat td {
    background: #1c2128 !important;
    color: #58a6ff !important;
    font-weight: 700;
    font-size: 10.5px;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    text-align: left;
    padding-left: 16px;
    border-bottom: 1px solid #30363d;
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
    .viz-overview-grid { grid-template-columns: 1fr 1fr; }
    .viz-feature-grid  { grid-template-columns: 1fr; }
    .viz-hero          { padding: 24px 18px; }
    .viz-tab-body, .viz-tab-header { padding: 16px 16px; }
}
@media (max-width: 520px) {
    .viz-overview-grid { grid-template-columns: 1fr; }
    .viz-hero-title    { font-size: 1.35rem; }
}