/**
 * SEO expansion pages — shared layout & interactive controls.
 * Matches BBM dark console palette. Does not alter main product CSS.
 */
:root {
  color-scheme: dark;
  --bbm-bg: #1e140c;
  --bbm-bg-card: #2a1f14;
  --bbm-bg-elev: #34281c;
  --bbm-border: #4a3828;
  --bbm-border-hot: #c89840;
  --bbm-text: #e8dcc8;
  --bbm-muted: #9a8a70;
  --bbm-body: #d4c4a8;
  --bbm-gold: #f0c878;
  --bbm-gold-dim: #c8a050;
  --bbm-green: #68d080;
  --bbm-green-deep: #4a9a68;
  --bbm-link: #9ec8ff;
  --bbm-warn: #e8a060;
  --bbm-danger: #d07060;
  --bbm-radius: 0.55rem;
  --bbm-max: 44rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.seo-exp {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bbm-bg);
  color: var(--bbm-text);
  line-height: 1.65;
  min-height: 100vh;
}

.seo-exp a {
  color: var(--bbm-green);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.seo-exp a:hover {
  color: #8eec9a;
}

.seo-exp a:focus-visible,
.seo-exp button:focus-visible,
.seo-exp input:focus-visible,
.seo-exp select:focus-visible {
  outline: 2px solid var(--bbm-border-hot);
  outline-offset: 2px;
}

.seo-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--bbm-gold);
  color: #1e140c;
  padding: 0.5rem 1rem;
  z-index: 100;
  font-weight: 700;
}
.seo-skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.seo-topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: #16100a;
  border-bottom: 1px solid var(--bbm-border);
  font-size: 0.88rem;
  color: var(--bbm-muted);
  position: sticky;
  top: 0;
  z-index: 40;
}
.seo-topnav a {
  color: var(--bbm-link);
  text-decoration: none;
}
.seo-topnav a:hover {
  color: var(--bbm-gold);
  text-decoration: underline;
}
.seo-topnav .sep {
  color: #5a4a38;
  user-select: none;
}

.seo-main {
  max-width: var(--bbm-max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 5rem;
}

.seo-breadcrumb {
  font-size: 0.82rem;
  color: var(--bbm-muted);
  margin: 0 0 1rem;
  line-height: 1.4;
}
.seo-breadcrumb a {
  color: var(--bbm-link);
  text-decoration: none;
}
.seo-breadcrumb a:hover {
  text-decoration: underline;
}

.seo-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bbm-muted);
  margin: 0 0 0.4rem;
}

.seo-exp h1 {
  color: var(--bbm-gold);
  font-size: clamp(1.4rem, 3.5vw, 1.85rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  line-height: 1.25;
}

.seo-exp h2 {
  color: var(--bbm-gold);
  font-size: 1.12rem;
  font-weight: 600;
  margin: 0 0 0.65rem;
  line-height: 1.3;
}

.seo-exp h3 {
  color: var(--bbm-gold-dim);
  font-size: 0.98rem;
  font-weight: 600;
  margin: 1rem 0 0.4rem;
}

.seo-exp p,
.seo-exp li {
  color: var(--bbm-body);
}

.seo-exp ul,
.seo-exp ol {
  padding-left: 1.2rem;
  margin: 0.4rem 0 0.8rem;
}

.seo-exp li {
  margin-bottom: 0.35rem;
}

.seo-section {
  margin: 1.75rem 0;
  padding: 1.15rem 1.2rem;
  background: var(--bbm-bg-card);
  border: 1px solid var(--bbm-border);
  border-radius: var(--bbm-radius);
}

.seo-section.answer {
  border-color: #6a5030;
  background: linear-gradient(180deg, #322416 0%, var(--bbm-bg-card) 100%);
}

.seo-section.experience {
  border-color: #3a6048;
  background: linear-gradient(180deg, #1c2a20 0%, var(--bbm-bg-card) 100%);
}

.seo-section.disclaimer {
  border-color: #5a4030;
  background: #241a12;
  font-size: 0.9rem;
}

.seo-lede {
  font-size: 1.05rem;
  color: var(--bbm-text);
  margin: 0;
}

.seo-muted {
  color: var(--bbm-muted);
  font-size: 0.9rem;
}

.seo-badge {
  display: inline-block;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--bbm-border);
  background: #2a1f14;
  color: var(--bbm-gold-dim);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-right: 0.35rem;
}

.seo-badge.live {
  border-color: #3a7050;
  color: var(--bbm-green);
}

.seo-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1rem 0 0.25rem;
}

.seo-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.25rem;
  border-radius: 0.45rem;
  background: linear-gradient(180deg, #c89840, #9a6820);
  color: #1e140c !important;
  font-weight: 700;
  text-decoration: none !important;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  min-height: 2.75rem;
}
.seo-cta:hover {
  filter: brightness(1.08);
  color: #1e140c !important;
}
.seo-cta.secondary {
  background: linear-gradient(180deg, #3a6a48, #2a4830);
  color: #e8ffe8 !important;
}
.seo-cta.ghost {
  background: transparent;
  border: 1px solid var(--bbm-border);
  color: var(--bbm-body) !important;
}
.seo-cta.playing {
  background: linear-gradient(180deg, #c06050, #8a3830);
  color: #fff !important;
}

/* Interactive player */
.seo-player {
  margin-top: 0.75rem;
  padding: 1rem;
  background: var(--bbm-bg-elev);
  border: 1px solid var(--bbm-border);
  border-radius: var(--bbm-radius);
}

.seo-player-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
}

.seo-player-status .dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: #5a4a38;
  display: inline-block;
}
.seo-player-status.is-on .dot {
  background: var(--bbm-green);
  box-shadow: 0 0 8px rgba(104, 208, 128, 0.7);
}

.seo-player-readout {
  font-variant-numeric: tabular-nums;
  color: var(--bbm-gold);
  font-weight: 600;
}

.seo-controls {
  display: grid;
  gap: 0.85rem;
}

.seo-control {
  display: grid;
  gap: 0.3rem;
}

.seo-control label {
  font-size: 0.82rem;
  color: var(--bbm-muted);
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.seo-control label span.val {
  color: var(--bbm-gold-dim);
  font-variant-numeric: tabular-nums;
}

.seo-control input[type="range"] {
  width: 100%;
  accent-color: var(--bbm-border-hot);
  height: 1.5rem;
  cursor: pointer;
}

.seo-control select,
.seo-control input[type="number"] {
  width: 100%;
  max-width: 14rem;
  padding: 0.45rem 0.6rem;
  border-radius: 0.35rem;
  border: 1px solid var(--bbm-border);
  background: #1e140c;
  color: var(--bbm-text);
  font-size: 0.95rem;
}

.seo-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.5rem 0 0.25rem;
}

.seo-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--bbm-border);
  background: #1e140c;
  color: var(--bbm-body);
  font-size: 0.82rem;
  cursor: pointer;
  min-height: 2.25rem;
}
.seo-chip:hover,
.seo-chip.active {
  border-color: var(--bbm-border-hot);
  color: var(--bbm-gold);
}

.seo-hp-note {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--bbm-warn);
}

/* Calculator */
.seo-calc {
  display: grid;
  gap: 0.85rem;
  margin-top: 0.5rem;
}

.seo-calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 540px) {
  .seo-calc-row {
    grid-template-columns: 1fr;
  }
}

.seo-calc-field label {
  display: block;
  font-size: 0.82rem;
  color: var(--bbm-muted);
  margin-bottom: 0.25rem;
}

.seo-calc-field input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 0.35rem;
  border: 1px solid var(--bbm-border);
  background: #1e140c;
  color: var(--bbm-text);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.seo-calc-result {
  padding: 0.85rem 1rem;
  background: #1c2a20;
  border: 1px solid #3a6048;
  border-radius: var(--bbm-radius);
  font-size: 1.05rem;
}
.seo-calc-result strong {
  color: var(--bbm-gold);
  font-variant-numeric: tabular-nums;
}

.seo-formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  background: #16100a;
  border: 1px solid var(--bbm-border);
  border-radius: 0.35rem;
  padding: 0.65rem 0.85rem;
  color: var(--bbm-gold-dim);
  overflow-x: auto;
}

/* Related cards */
.seo-related {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.5rem;
}

.seo-card {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: var(--bbm-radius);
  background: #1e140c;
  border: 1px solid var(--bbm-border);
  text-decoration: none !important;
  color: inherit !important;
}
.seo-card:hover {
  border-color: var(--bbm-border-hot);
}
.seo-card strong {
  color: var(--bbm-gold);
  display: block;
  margin-bottom: 0.2rem;
}
.seo-card span {
  color: var(--bbm-muted);
  font-size: 0.88rem;
}

.seo-related.two-col {
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 540px) {
  .seo-related.two-col {
    grid-template-columns: 1fr;
  }
}

/* Tables */
.seo-table-wrap {
  overflow-x: auto;
  margin: 0.5rem 0;
}

.seo-exp table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.seo-exp th,
.seo-exp td {
  border: 1px solid var(--bbm-border);
  padding: 0.45rem 0.6rem;
  text-align: left;
  color: var(--bbm-body);
}
.seo-exp th {
  background: #241a12;
  color: var(--bbm-gold-dim);
  font-weight: 600;
}

/* Hub grid */
.seo-hub-grid {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0 2rem;
}
@media (min-width: 640px) {
  .seo-hub-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.seo-footer-nav {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--bbm-border);
  font-size: 0.9rem;
  color: var(--bbm-muted);
}
.seo-footer-nav a {
  color: var(--bbm-link);
}

.seo-status-banner {
  font-size: 0.8rem;
  color: var(--bbm-warn);
  background: #2a2010;
  border: 1px solid #6a5030;
  border-radius: 0.35rem;
  padding: 0.5rem 0.75rem;
  margin-bottom: 1rem;
}

.seo-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Waveform explorer visual */
.seo-wave-canvas {
  width: 100%;
  height: 120px;
  background: #16100a;
  border: 1px solid var(--bbm-border);
  border-radius: 0.35rem;
  display: block;
  margin-top: 0.5rem;
}

.seo-compare-cols {
  display: grid;
  gap: 0.75rem;
}
@media (min-width: 600px) {
  .seo-compare-cols {
    grid-template-columns: 1fr 1fr;
  }
}

.seo-mode-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.seo-mode-toggle button {
  flex: 1 1 auto;
  min-width: 7rem;
}