/* About page: standalone styles layered over the shared Air design system. */

.about-page main.about-shell {
  width: min(1180px, calc(100% - 2rem));
  padding: clamp(1rem, 2.5vw, 2rem);
}

.about-page main.about-shell > section {
  box-shadow: none;
}

.about-breadcrumbs {
  margin-bottom: 1rem;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.about-breadcrumbs ol {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-breadcrumbs li {
  display: flex;
  align-items: center;
}

.about-breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: 0.35rem;
  color: var(--border-strong);
}

.about-breadcrumbs a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.about-eyebrow,
.about-guide-kicker,
.about-guide-card-label {
  color: var(--accent);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.about-guide-kicker {
  color: var(--accent-hover);
}

.about-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 31rem;
  grid-template-columns: minmax(0, 1.24fr) minmax(280px, 0.76fr);
  align-items: center;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  padding: clamp(1.5rem, 5vw, 4.5rem);
  border: 1px solid var(--border);
  border-radius: clamp(1rem, 2.5vw, 1.6rem);
  background:
    linear-gradient(
      120deg,
      color-mix(in srgb, var(--accent-soft) 58%, transparent),
      transparent 45%
    ),
    linear-gradient(150deg, var(--surface-raised), var(--surface));
  box-shadow: var(--shadow-shell);
  overflow: hidden;
}

.about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(color-mix(in srgb, var(--border) 30%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--border) 30%, transparent) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(90deg, transparent, #000 62%, #000);
  opacity: 0.58;
}

.about-hero::after {
  content: '';
  position: absolute;
  top: -16rem;
  right: -13rem;
  z-index: -1;
  width: 36rem;
  height: 36rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  filter: blur(1px);
}

.about-hero-copy {
  min-width: 0;
}

.about-hero h1 {
  max-width: 750px;
  margin: 0.5rem 0 1rem;
  font-family: var(--font-heading);
  font-size: clamp(3rem, 7vw, 5.8rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.about-hero-lede {
  max-width: 680px;
  margin: 0;
  color: var(--text-soft);
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.68;
}

.about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.4rem;
}

.about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  margin: 2rem 0 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.about-hero-facts li {
  display: grid;
  gap: 0.14rem;
}

.about-hero-facts strong {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  line-height: 1;
}

.about-hero-facts span {
  color: var(--text-soft);
  font-size: 0.74rem;
  font-weight: 700;
}

.about-hero-art {
  position: relative;
  display: grid;
  width: min(100%, 24rem);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
}

.about-mark {
  position: relative;
  z-index: 3;
  display: grid;
  width: 43%;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 28%;
  background: linear-gradient(150deg, var(--accent), var(--accent-hover));
  color: var(--accent-contrast);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.28),
    0 24px 60px color-mix(in srgb, var(--accent) 32%, transparent);
  transform: rotate(-6deg);
}

.about-mark::after {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid rgb(255 255 255 / 0.2);
  border-radius: 24%;
}

.about-mark svg {
  width: 54%;
  fill: currentcolor;
  transform: rotate(6deg);
}

.about-orbit {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: 50%;
}

.about-orbit::before,
.about-orbit::after {
  content: '';
  position: absolute;
  width: 0.68rem;
  aspect-ratio: 1;
  border: 3px solid var(--surface);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 3px 10px color-mix(in srgb, var(--accent) 32%, transparent);
}

.about-orbit-one {
  inset: 14%;
  transform: rotate(17deg);
}

.about-orbit-one::before {
  top: 14%;
  right: 7%;
}

.about-orbit-one::after {
  bottom: 13%;
  left: 7%;
}

.about-orbit-two {
  inset: 2%;
  border-style: dashed;
  opacity: 0.6;
  transform: rotate(-24deg);
}

.about-orbit-two::before {
  top: 47%;
  right: -0.35rem;
}

.about-orbit-two::after {
  bottom: 19%;
  left: 6%;
}

.about-art-chip {
  position: absolute;
  z-index: 4;
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0.4rem 0.72rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--surface) 91%, transparent);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
  backdrop-filter: blur(12px);
}

.about-art-chip-rating {
  top: 5%;
  left: 12%;
}

.about-art-chip-race {
  top: 27%;
  right: -2%;
}

.about-art-chip-decks {
  right: 10%;
  bottom: 9%;
}

.about-art-chip-data {
  bottom: 23%;
  left: -2%;
}

.about-intro,
.about-guides,
.about-workflow,
.about-community {
  margin-top: clamp(3rem, 8vw, 6rem);
}

#guide-library {
  scroll-margin-top: 6.25rem;
}

.about-section-heading {
  max-width: 800px;
}

.about-section-heading h2,
.about-community h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.about-section-heading > p,
.about-community p {
  max-width: 720px;
  margin: 0.8rem 0 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.about-section-heading > p a {
  color: var(--accent);
  font-weight: 750;
  text-underline-offset: 0.16em;
}

.about-section-heading-split {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 1.15fr);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 5rem);
}

.about-section-heading-split > p {
  margin: 0;
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.about-principle-card {
  min-width: 0;
  padding: clamp(1.15rem, 3vw, 1.55rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.about-principle-icon {
  display: grid;
  width: 2.7rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

.about-principle-icon svg {
  width: 1.35rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.about-principle-card h3 {
  margin: 1rem 0 0.45rem;
  font-family: var(--font-heading);
  font-size: 1.12rem;
}

.about-principle-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.88rem;
  line-height: 1.65;
}

.about-guide-groups {
  display: grid;
  gap: 1rem;
  margin-top: 1.6rem;
}

.about-guide-group {
  display: grid;
  grid-template-columns: minmax(210px, 0.34fr) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.25rem);
  padding: clamp(1rem, 2.5vw, 1.4rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: color-mix(in srgb, var(--surface-raised) 72%, var(--surface));
}

.about-guide-group-heading {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.25rem;
}

.about-guide-number {
  color: color-mix(in srgb, var(--accent) 48%, var(--text-soft));
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 800;
}

.about-guide-group-heading h3 {
  margin: 0.28rem 0 0;
  font-family: var(--font-heading);
  font-size: clamp(1.18rem, 2.5vw, 1.55rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.about-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.about-guide-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.about-guide-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 13.5rem;
  flex-direction: column;
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-card) - 4px);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-xs);
  text-decoration: none;
  transition:
    border-color var(--duration-fast) ease,
    box-shadow var(--duration-fast) ease,
    transform var(--duration-fast) var(--ease);
}

.about-guide-card strong {
  margin-top: 0.62rem;
  font-family: var(--font-heading);
  font-size: 1.08rem;
  line-height: 1.3;
}

.about-guide-card-copy {
  margin-top: 0.5rem;
  color: var(--text-soft);
  font-size: 0.82rem;
  line-height: 1.6;
}

.about-guide-card-link {
  display: flex;
  align-items: center;
  gap: 0.38rem;
  margin-top: auto;
  padding-top: 1rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
}

.about-guide-card-link span {
  transition: transform var(--duration-fast) var(--ease);
}

.about-workflow {
  display: grid;
  grid-template-columns: minmax(230px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background:
    radial-gradient(
      circle at 0 100%,
      color-mix(in srgb, var(--accent) 12%, transparent),
      transparent 22rem
    ),
    var(--surface);
  box-shadow: var(--shadow-card);
}

.about-workflow-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-workflow-list li {
  position: relative;
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0 0 1.45rem;
}

.about-workflow-list li:last-child {
  padding-bottom: 0;
}

.about-workflow-list li:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 2.6rem;
  bottom: 0;
  left: 1.28rem;
  width: 1px;
  background: var(--border);
}

.about-step-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: 2.6rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 800;
}

.about-workflow-list h3 {
  margin: 0.06rem 0 0.32rem;
  font-family: var(--font-heading);
  font-size: 1.08rem;
}

.about-workflow-list p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.86rem;
  line-height: 1.6;
}

.about-community {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  border-radius: var(--radius-card);
  background:
    linear-gradient(
      120deg,
      color-mix(in srgb, var(--accent-soft) 62%, transparent),
      transparent 60%
    ),
    var(--surface);
  box-shadow: var(--shadow-card);
}

.about-community-copy {
  max-width: 720px;
}

.about-community-actions {
  display: grid;
  flex: 0 0 auto;
  gap: 0.65rem;
}

.about-community-actions .btn {
  justify-content: center;
}

.about-page :where(.about-guide-card, .about-breadcrumbs a):focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 42%, transparent);
  outline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .about-guide-card:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }

  .about-guide-card:hover .about-guide-card-link span {
    transform: translateX(0.22rem);
  }
}

:root.oled .about-hero,
:root.oled .about-principle-card,
:root.oled .about-guide-group,
:root.oled .about-guide-card,
:root.oled .about-workflow,
:root.oled .about-community {
  box-shadow: none;
}

@media (max-width: 980px) {
  .about-hero {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 0.56fr);
    gap: 1rem;
  }

  .about-guide-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-guide-group-heading {
    align-items: center;
  }

  .about-guide-grid-three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .about-hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
  }

  .about-hero-art {
    width: min(80vw, 21rem);
    margin-top: 0.5rem;
  }

  .about-section-heading-split,
  .about-workflow {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-principles {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-community {
    align-items: flex-start;
    flex-direction: column;
  }

  .about-community-actions {
    display: flex;
    flex-wrap: wrap;
  }
}

@media (max-width: 600px) {
  .about-page main.about-shell {
    width: calc(100% - 1rem);
    padding: 0.75rem;
  }

  .about-hero {
    padding: 1.25rem;
    border-radius: 14px;
  }

  .about-hero h1 {
    font-size: clamp(2.65rem, 16vw, 4rem);
  }

  .about-actions,
  .about-community-actions {
    display: grid;
    width: 100%;
  }

  .about-actions .btn,
  .about-community-actions .btn {
    width: 100%;
  }

  .about-hero-facts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
  }

  .about-hero-facts li {
    min-width: 0;
  }

  .about-hero-facts strong {
    font-size: 1rem;
    overflow-wrap: anywhere;
  }

  .about-hero-facts span {
    font-size: 0.68rem;
  }

  .about-guide-grid,
  .about-guide-grid-three {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-guide-card {
    min-height: 12.5rem;
  }

  .about-workflow,
  .about-community {
    padding: 1.2rem;
    border-radius: 14px;
  }
}

@media (max-width: 380px) {
  .about-art-chip-race {
    right: -4%;
  }

  .about-art-chip-data {
    left: -4%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-guide-card,
  .about-guide-card-link span {
    transition: none;
  }
}