/* =========================================================
   About page — page-specific styles
   Used by: about.html / scripts/about-page.jsx
   ========================================================= */
.about-principles-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}
.about-principle-card {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.75rem;
  display: flex; align-items: center; gap: 1.75rem;
}
.about-principle-card__illo { width: 11.25rem; height: 11.25rem; flex-shrink: 0; }
.about-principle-card__illo img { width: 100%; height: 100%; object-fit: contain; }
.about-principle-card__content { flex: 1; min-width: 0; }
.about-principle-card__num {
  font: 800 var(--fs-micro)/1 var(--font-display); letter-spacing: 0.08em;
  color: #0b0b0b; margin-bottom: 0.625rem;
}
.about-principle-card__title { font: 700 1.0625rem/1.2 var(--font-display); letter-spacing: var(--tracking-tight); margin: 0 0 0.5rem; }
.about-principle-card__body { font: 400 var(--fs-body-sm)/1.6 var(--font-body); color: var(--fg-muted); margin: 0; }
.about-tabs { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: 1.75rem; border-bottom: 1px solid var(--border); }
.about-tab {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 2.75rem; box-sizing: border-box;
  font: 500 0.875rem/1 var(--font-body); padding: 0.75rem 1.25rem;
  background: transparent; border: none; cursor: pointer;
  color: var(--fg-muted); position: relative;
  transition: color var(--dur-fast);
}
.about-tab:hover { color: var(--fg); }
.about-tab.is-active { color: var(--accent); }
.about-tab.is-active::after {
  content: ""; position: absolute; bottom: -1px; left: 0; right: 0;
  height: 0.125rem; background: var(--accent); border-radius: 0.0625rem;
}
/* Per-tab fixed colors */
.about-tab[data-tab="ux"].is-active    { color: var(--ux-base); }
.about-tab[data-tab="ux"].is-active::after    { background: var(--ux-base); }
.about-tab[data-tab="ai"].is-active    { color: var(--ai-base); }
.about-tab[data-tab="ai"].is-active::after    { background: var(--ai-base); }
.about-tab[data-tab="play"].is-active  { color: var(--play-base); }
.about-tab[data-tab="play"].is-active::after  { background: var(--play-base); }
.about-tab[data-tab="general"].is-active { color: #0b0b0b; }
.about-tab[data-tab="general"].is-active::after { background: #0b0b0b; }
.tools-row { display: flex; flex-wrap: wrap; gap: 0.625rem; }
.tool-chip {
  font: 500 var(--fs-body-sm)/1 var(--font-body);
  padding: 0.5625rem 0.875rem; border-radius: var(--radius-pill);
  background: var(--bg-elevated); border: 1px solid var(--border);
  color: var(--fg-muted);
}
/* Tools showcase — recruiter-facing brand logo grid (white break, bled to page edge) */
.tools-showcase {
  margin: 4rem -2rem 0;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-3);
  padding: 3.5rem var(--page-x, 2.5rem);
  text-align: center;
}
.tools-showcase .eyebrow { color: #5a564e; }
.tools-showcase__title {
  font: 700 1.25rem/1.25 var(--font-display);
  letter-spacing: var(--tracking-tight);
  color: #0b0b0b;
  margin: 0.375rem auto 0.625rem;
  max-width: 32ch;
  text-wrap: balance;
}
.tools-showcase__lead {
  font: 400 var(--fs-body-sm)/1.6 var(--font-body);
  color: #5a564e;
  font-style: italic;
  max-width: 60ch;
  margin: 0 auto 1.75rem;
  text-wrap: pretty;
}
.tools-showcase__grid {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0.875rem;
}
.tool-logo-card {
  position: relative;
  width: 7.5rem; height: 4.75rem;
  display: flex; align-items: center; justify-content: center;
}
.tool-logo-card img { max-width: 100%; max-height: 100%; object-fit: contain; }
.tool-logo-card[data-name]::after {
  content: attr(data-name);
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(0.25rem);
  background: rgba(18,18,18,0.96);
  color: #f5efe0;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-md);
  font: 500 0.75rem/1 var(--font-body);
  white-space: nowrap;
  z-index: 20;
  pointer-events: none;
  box-shadow: 0 0.5rem 1.5rem rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity 150ms ease, transform 150ms ease;
}
.tool-logo-card[data-name]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
@media (max-width: 600px) {
  .tools-showcase { margin-left: -16px; margin-right: -16px; padding-left: 24px; padding-right: 24px; }
  .tool-logo-card { width: calc(50% - 7px); }
}
.hi5-callout {
  background: var(--play-wash); border: 1px solid var(--play-tint);
  border-radius: var(--radius-lg); padding: 1.5rem 1.75rem;
  display: flex; align-items: flex-start; gap: 1.125rem; margin-top: 1rem;
}
.hi5-callout__mark { font-size: 1.75rem; line-height: 1; color: var(--play-base); flex: 0 0 auto; }
.hi5-callout__title { font: 700 1rem/1.2 var(--font-display); margin: 0 0 0.375rem; }
.hi5-callout__body { font: 400 var(--fs-body-sm)/1.5 var(--font-body); color: var(--fg-muted); margin: 0 0 0.625rem; }
.hi5-callout__link { font: 600 var(--fs-body-sm)/1 var(--font-body); color: var(--play-base); text-decoration: underline; text-underline-offset: 0.25rem; }
/* Skill tooltip */
.skill-chip { position: relative; }
.skills-grid { overflow: visible !important; position: relative; }
.skill-chip[data-desc]::after {
  content: attr(data-desc);
  position: absolute;
  bottom: calc(100% + 0.625rem);
  left: 50%;
  transform: translateX(-50%) translateY(-0.25rem);
  background: rgba(18,18,18,0.96);
  color: #f5efe0;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font: 400 var(--fs-body-sm)/1.6 var(--font-body);
  font-style: italic;
  text-align: center;
  white-space: normal;
  width: 16.25rem;
  z-index: 9999;
  pointer-events: none;
  box-shadow: 0 0.5rem 1.5rem rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity 150ms ease, transform 150ms ease;
}
.skill-chip[data-desc]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
/* Mode tagline strip */
.about-tagline {
  max-width: var(--content-width, 900px);
  margin: 0 auto;
  padding: 56px var(--page-x, 40px) 0;
}
.about-tagline__statement {
  font: 700 28px/1.25 var(--font-display);
  letter-spacing: var(--tracking-tight);
  color: var(--fg);
  margin: 0 0 12px;
  max-width: 22ch;
  text-wrap: balance;
}
.about-tagline__aside {
  font: 400 17px/1.5 var(--font-body);
  color: var(--fg-muted);
  margin: 0;
  font-style: italic;
}
/* Personal two-col layout */
.about-personal-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: start;
}
.about-personal-layout__video {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 5/5;
}
@media (max-width: 900px) {
  .about-personal-layout {
    grid-template-columns: 1fr;
  }
  .about-personal-layout__video {
    aspect-ratio: 16/9;
  }
}
/* Teaching cards */
.about-teaching-cards {
  display: flex; flex-direction: column; gap: 16px;
}
.about-teaching-card {
  display: flex; align-items: flex-start; gap: 20px;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px 28px;
}
.about-teaching-card__icon {
  font-size: 28px; line-height: 1; flex: 0 0 auto; margin-top: 2px;
}
.about-teaching-card__title {
  font: 700 16px/1.2 var(--font-display); margin: 0 0 6px;
}
.about-teaching-card__body {
  font: 400 var(--fs-body-sm)/1.6 var(--font-body); color: var(--fg-muted); margin: 0;
}
@media (max-width: 900px) {
  .about-principles-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .about-tagline__statement { font-size: 22px; }
}
@media (max-width: 600px) {
  .about-principle-card { flex-direction: column; align-items: flex-start; gap: 16px; }
  .about-principle-card__illo { width: 120px; height: 120px; }
  .skills-grid { grid-template-columns: 1fr !important; }
}