/* Buttons, cards, insight strips, download cards, charts */

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-body-md);
  font-weight: 500;
  line-height: 1.2;
  border-radius: var(--radius-pill);
  padding: 0.75rem 1.5rem;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
  border: 1px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn--primary:hover {
  background: var(--surface-tint);
}

.btn--secondary {
  background: var(--surface-container-highest);
  color: var(--on-surface);
  border-color: var(--outline-variant);
}

.btn--secondary:hover {
  border-color: var(--primary);
}

.btn--inverse {
  background: var(--inverse-surface);
  color: var(--inverse-on-surface);
}

.btn--inverse:hover {
  background: var(--primary);
  color: var(--on-primary);
}

.btn--block {
  width: 100%;
  display: flex;
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--fs-body-lg);
}

.btn--caps {
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  padding: 1rem 2rem;
}

.btn .material-symbols-outlined {
  font-size: 1.125rem;
}

/* ——— Cards ——— */
.card {
  background: var(--surface-container);
  border: 1px solid color-mix(in srgb, var(--outline-variant) 50%, transparent);
  border-radius: var(--radius-xl);
  padding: var(--gutter);
  position: relative;
  overflow: hidden;
}

.card--low {
  background: var(--surface-container-low);
}

.card--surface {
  background: var(--surface);
  border-color: var(--outline-variant);
  border-radius: var(--radius);
}

.card--insight {
  border-left: 4px solid var(--secondary);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card--accent-border {
  border-left: 2px solid var(--primary);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
}

.label-caps {
  font-family: var(--font-body);
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--on-surface-variant);
  line-height: var(--lh-label);
}

.metric-value {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--on-surface);
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
}

.metric-value .material-symbols-outlined {
  color: var(--secondary);
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

.metric-delta {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  color: var(--secondary);
  font-size: var(--fs-body-lg);
}

/* ——— Confidence chip ——— */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--surface-variant);
  color: var(--on-surface-variant);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius);
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  white-space: nowrap;
}

.chip .material-symbols-outlined {
  font-size: 16px;
}

/* ——— Insight evidence details ——— */
.insight-card {
  background: var(--surface-container);
  border: 1px solid var(--surface-variant);
  border-left: 2px solid var(--primary);
  border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .insight-card {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
}

.insight-card__body {
  flex: 1;
}

.insight-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--on-surface);
}

.insight-card p {
  color: var(--on-surface-variant);
  margin-bottom: 1.5rem;
}

.insight-card details summary {
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--primary);
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  user-select: none;
}

.insight-card details summary::-webkit-details-marker {
  display: none;
}

.insight-card details summary:hover {
  color: var(--surface-tint);
}

.insight-card details[open] summary .material-symbols-outlined {
  transform: rotate(180deg);
}

.insight-card details .material-symbols-outlined {
  font-size: 16px;
  transition: transform 0.2s ease;
}

.insight-card .evidence {
  margin-top: 1rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  color: var(--on-surface-variant);
  font-size: var(--fs-body-md);
}

/* ——— Bar chart (CSS) ——— */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  height: 16rem;
  width: 100%;
  margin-top: 3rem;
  padding: 0 0.5rem 0.5rem;
  border-bottom: 1px solid var(--outline-variant);
}

.bar-chart__bar {
  flex: 1;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--surface-dim);
  min-height: 8%;
  transition: background 0.2s ease;
}

.bar-chart__bar.is-accent {
  background: var(--secondary-container);
  position: relative;
}

.bar-chart__bar.is-accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: var(--secondary);
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ——— Download cards ——— */
.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  width: 100%;
  max-width: 1100px;
}

@media (min-width: 768px) {
  .download-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.download-card {
  background: var(--surface-container-low);
  border: 1px solid var(--surface-variant);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
  transition: box-shadow 0.3s ease;
}

.download-card:hover {
  box-shadow: var(--shadow-ambient);
}

.download-card.is-preferred {
  box-shadow: 0 0 0 2px var(--on-surface);
}

.download-card__icon {
  padding: 1.25rem;
  background: var(--surface-container-highest);
  border-radius: var(--radius-lg);
  color: var(--primary);
}

.download-card__icon .material-symbols-outlined {
  font-size: 2.25rem;
}

.download-card__body {
  width: 100%;
}

.download-card__body h3 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  margin-bottom: 0.75rem;
  color: var(--on-surface);
}

.download-card__body p {
  color: var(--on-surface-variant);
  font-size: var(--fs-body-md);
}

.download-card .btn {
  width: 100%;
  margin-top: auto;
  border-radius: var(--radius);
  padding: 1rem;
}

.download-card__meta {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-variant);
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

.download-card__meta a {
  text-decoration: underline;
  text-decoration-color: var(--outline-variant);
  text-underline-offset: 3px;
}

.download-card__meta a:hover {
  color: var(--primary);
  text-decoration-color: var(--primary);
}

/* Source code band */
.source-band {
  background: var(--surface-container-low);
  border: 1px solid var(--surface-variant);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
  width: 100%;
  max-width: 1100px;
}

@media (min-width: 768px) {
  .source-band {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.source-band h2 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  color: var(--on-surface);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.source-band h2 .material-symbols-outlined {
  color: var(--secondary);
}

.source-band p {
  color: var(--on-surface-variant);
  font-size: var(--fs-body-lg);
  max-width: 40rem;
}

.source-band .btn {
  flex-shrink: 0;
  border-radius: var(--radius);
  padding: 1rem 2rem;
}

/* ——— Team cards ——— */
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

@media (min-width: 480px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .team-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.team-card {
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--unit);
}

.team-card__avatar {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--outline-variant);
  margin-bottom: 1rem;
  background: var(--surface-container);
}

.team-card__avatar--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
}

.team-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  color: var(--on-surface);
}

.team-card .role {
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

/* ——— Placeholder media ——— */
.media-placeholder {
  width: 100%;
  background: linear-gradient(
    145deg,
    var(--surface-container) 0%,
    var(--surface-container-high) 50%,
    var(--surface-container-low) 100%
  );
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
  font-size: var(--fs-body-md);
  overflow: hidden;
  position: relative;
}

.media-placeholder--hero {
  min-height: 280px;
  aspect-ratio: 16 / 10;
}

@media (min-width: 768px) {
  .media-placeholder--hero {
    min-height: 480px;
    height: 614px;
    aspect-ratio: auto;
  }
}

.media-placeholder--square {
  aspect-ratio: 4 / 3;
  min-height: 12rem;
}

.media-placeholder__label {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  font-size: var(--fs-label-caps);
  font-weight: 700;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  opacity: 0.5;
}

/* Blockquote */
.pull-quote {
  padding-left: 2rem;
  border-left: 2px solid var(--primary);
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-style: italic;
  color: var(--on-surface);
  margin-block: 3rem;
}

/* Requirements strip */
.req-strip {
  background: var(--surface-container);
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  width: 100%;
}

.req-strip .material-symbols-outlined {
  color: var(--secondary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.req-strip h3 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--on-surface);
}

.req-strip p {
  color: var(--on-surface-variant);
  font-size: var(--fs-body-md);
}

/* Badge pill */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1rem;
}

.badge-pill .material-symbols-outlined {
  color: var(--secondary);
  font-size: 1.25rem;
  font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 24;
}

/* Prose for legal */
.prose {
  max-width: 42rem;
  margin-inline: auto;
}

.prose h1 {
  margin-bottom: 0.5rem;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--fs-headline-sm);
  font-weight: 500;
  color: var(--on-surface);
  margin-top: 2rem;
  margin-bottom: 0.65rem;
}

.prose p + p {
  margin-top: 1rem;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--on-surface);
}

.legal-meta {
  color: var(--on-surface-variant);
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
}

.legal-list {
  margin: 1rem 0 0 1.25rem;
  list-style: disc;
  color: var(--on-surface-variant);
  font-size: var(--fs-body-md);
  line-height: 1.65;
}

.legal-list li + li {
  margin-top: 0.4rem;
}

.legal-credit {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  background: var(--surface-container-low);
  border: 1px solid var(--surface-variant);
  border-radius: var(--radius-lg);
  color: var(--on-surface);
  line-height: 1.55;
}

.legal-note {
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--on-surface-variant);
}

.legal-back {
  margin-top: 2rem;
}

.legal-back a {
  font-weight: 500;
}

/* 404 */
.error-page {
  text-align: center;
  max-width: 36rem;
  margin-inline: auto;
  padding-block: var(--stack-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.error-code {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 12vw, 5rem);
  font-weight: 600;
  line-height: 1;
  color: var(--secondary);
  letter-spacing: -0.03em;
}

.error-page h1 {
  margin: 0;
}

.error-page .text-muted {
  color: var(--on-surface-variant);
  max-width: 28rem;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1rem;
}