/*
 * Feature pages (`funktionen/`) and web help (`hilfe/`), Mapidu spec 105.
 * Builds on marketing-base.css and marketing.css; site tokens only.
 */

/* ---------- Feature pages ---------- */

.feature-hero {
  padding-block-end: clamp(1.5rem, 3vw, 2.5rem);
}

.feature-hero__title {
  max-width: 18ch;
}

/* Flex, not grid: five areas wrap as three and two, and the last row fills its width. */
.feature-cards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-cards li {
  position: relative;
  display: grid;
  flex: 1 1 20rem;
  align-content: start;
  gap: var(--space-sm);
  padding: var(--space-xl);
  border: 1px solid var(--concept-line);
  border-radius: var(--radius-lg);
  background: var(--concept-surface);
  transition: border-color 160ms ease, transform 160ms ease;
}

.feature-cards li:hover {
  border-color: var(--concept-line-strong);
  transform: translateY(-2px);
}

.feature-cards span {
  color: var(--concept-gold-text);
  font-size: var(--concept-font-sm);
  font-weight: var(--font-weight-label);
}

.feature-cards h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--concept-font-card-title);
  font-weight: 600;
  line-height: 1.2;
}

.feature-cards a {
  text-decoration: none;
}

/* The whole card answers the pointer; the link stays the one focus stop. */
.feature-cards a::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  content: '';
}

.feature-cards a:focus-visible {
  outline: none;
}

.feature-cards a:focus-visible::after {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.feature-cards p {
  margin: 0;
  color: var(--concept-muted);
  font-size: var(--concept-font-base-small);
  line-height: 1.6;
}

.feature-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  align-items: center;
  gap: clamp(var(--space-xl), 6vw, 5rem);
  padding-block: clamp(2rem, 5vw, 4rem);
}

.feature-detail--reverse .feature-detail__copy {
  order: 2;
}

.feature-detail__copy > p {
  max-width: 38rem;
  margin: var(--space-lg) 0 0;
  color: var(--concept-muted);
  font-size: var(--concept-font-body);
  line-height: 1.7;
}

.feature-detail__media--phone {
  width: min(100%, 18rem);
  justify-self: center;
}

.feature-points {
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--concept-font-base-small);
  line-height: 1.55;
}

.feature-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm);
}

.feature-points li::before {
  color: var(--color-success-text);
  content: '✓';
  font-weight: 700;
}

.feature-band {
  margin-block: clamp(1rem, 3vw, 2rem);
  border-radius: calc(var(--radius-lg) * 1.4);
  background: var(--concept-soft);
  padding-inline: clamp(var(--space-lg), 5vw, 4rem);
}

.feature-band > p {
  max-width: 44rem;
  margin: var(--space-lg) 0 0;
  color: var(--concept-muted);
  font-size: var(--concept-font-body);
  line-height: 1.7;
}

.feature-note,
.feature-help {
  padding-block: clamp(1.5rem, 4vw, 3rem);
}

.feature-note h2 {
  margin: 0 0 var(--space-md);
  font-size: var(--concept-font-lg);
}

.feature-note ul {
  display: grid;
  gap: var(--space-sm);
  max-width: 48rem;
  margin: 0;
  padding: 0 0 0 var(--space-lg);
  color: var(--concept-muted);
  line-height: 1.65;
}

.feature-help .concept-heading {
  font-size: var(--concept-font-lg);
}

.feature-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
}

.feature-help__links a,
.help-chapter-list a,
.help-pager__link {
  border: 1px solid var(--concept-line);
  border-radius: var(--radius-md);
  background: var(--concept-surface);
  text-decoration: none;
}

.feature-help__links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--concept-font-base-small);
  font-weight: 600;
}

.feature-help__links a::after {
  color: var(--concept-gold-text);
  content: '→';
}

.feature-help__links a:hover,
.help-chapter-list a:hover,
.help-pager__link:hover {
  border-color: var(--concept-line-strong);
}

/* ---------- Help: index ---------- */

.help-index__title {
  max-width: 16ch;
}

.help-search {
  display: grid;
  gap: var(--space-xs);
  max-width: 36rem;
  margin-block: var(--space-xl) var(--space-lg);
}

.help-search label {
  font-weight: 600;
}

.help-search input {
  min-height: 2.75rem;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--concept-line-strong);
  border-radius: var(--radius-md);
  background: var(--concept-surface);
  color: var(--concept-ink);
  font: inherit;
}

.help-search input:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.help-search__hint,
.help-search__status {
  margin: 0;
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
}

.help-group {
  margin-block-start: clamp(2rem, 5vw, 3.5rem);
}

.help-group__title {
  max-width: none;
  font-size: var(--concept-font-lg);
}

.help-chapter-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
}

.help-chapter-list a {
  display: grid;
  align-content: start;
  gap: var(--space-xs);
  height: 100%;
  padding: var(--space-lg);
}

.help-chapter-list strong {
  font-size: var(--concept-font-body);
}

.help-chapter-list span {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
  line-height: 1.55;
}

/* ---------- Help: chapter ---------- */

.help-layout {
  display: grid;
  grid-template-columns: minmax(13rem, 16rem) minmax(0, 1fr);
  align-items: start;
  gap: clamp(var(--space-xl), 5vw, 4rem);
}

.help-toc {
  position: sticky;
  inset-block-start: 6rem;
  max-height: calc(100vh - 7rem);
  overflow-y: auto;
  padding-inline-end: var(--space-sm);
  font-size: var(--concept-font-sm);
}

.help-toc section + section {
  margin-block-start: var(--space-lg);
}

.help-toc h2 {
  margin: 0 0 var(--space-xs);
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
  font-weight: var(--font-weight-label);
}

.help-toc ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.help-toc a {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  border-inline-start: 2px solid transparent;
  text-decoration: none;
}

.help-toc a:hover {
  color: var(--concept-gold-text);
}

.help-toc a[aria-current='page'] {
  border-inline-start-color: var(--color-primary);
  font-weight: 600;
}

.help-article {
  min-width: 0;
  max-width: 48rem;
  font-size: var(--concept-font-body);
  line-height: 1.7;
}

.help-article > p,
.help-block p {
  margin: var(--space-md) 0 0;
}

.help-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
}

.help-title {
  margin: var(--space-sm) 0 0;
  font-family: var(--font-serif);
  font-size: var(--concept-font-heading);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.help-lead {
  margin-block-start: var(--space-lg);
}

.help-article h2 {
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  font-family: var(--font-serif);
  font-size: var(--concept-font-lg);
  font-weight: 600;
  line-height: 1.2;
}

.help-article h3 {
  margin: 0;
  font-size: var(--concept-font-body);
}

.help-guide {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-xl) 0 0;
  padding: var(--space-lg);
  border: 1px solid var(--concept-line);
  border-radius: var(--radius-lg);
  background: var(--concept-surface);
}

.help-guide div {
  display: grid;
  grid-template-columns: minmax(8rem, 11rem) 1fr;
  gap: var(--space-md);
}

.help-guide dt {
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
  font-weight: var(--font-weight-label);
}

.help-guide dd {
  margin: 0;
}

.help-list,
.help-steps {
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-md) 0 0;
  padding-inline-start: var(--space-lg);
}

.help-steps li::marker {
  color: var(--concept-gold-text);
  font-weight: 700;
}

.help-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15rem), 1fr));
  gap: var(--space-md);
  margin-block-start: var(--space-lg);
}

.help-card {
  padding: var(--space-lg);
  border: 1px solid var(--concept-line);
  border-radius: var(--radius-md);
  background: var(--concept-surface);
}

.help-card p {
  margin: var(--space-sm) 0 0;
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
  line-height: 1.6;
}

.help-technical {
  margin-block-start: clamp(2rem, 4vw, 2.75rem);
  padding: var(--space-lg);
  border-inline-start: 3px solid var(--concept-line-strong);
  border-radius: var(--radius-sm);
  background: var(--concept-soft);
  font-size: var(--concept-font-base-small);
}

.help-technical h2 {
  margin: 0;
  font-family: inherit;
  font-size: var(--concept-font-base-small);
}

.help-technical ul {
  display: grid;
  gap: var(--space-xs);
  margin: var(--space-sm) 0 0;
  padding-inline-start: var(--space-lg);
}

.help-note {
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
}

.help-table-wrap {
  margin-block-start: var(--space-lg);
  overflow-x: auto;
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--concept-font-base-small);
}

.help-table th,
.help-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--concept-line);
  text-align: start;
  vertical-align: top;
}

.help-table thead th {
  color: var(--concept-muted);
  font-weight: var(--font-weight-label);
}

.help-figure {
  margin: var(--space-xl) 0 0;
}

.help-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--concept-line-strong);
  border-radius: var(--radius-lg);
  background: var(--concept-surface);
}

.help-figure--phone img {
  width: min(100%, 17rem);
  margin-inline: auto;
  border: 0.35rem solid var(--color-device-frame);
  border-radius: 1.75rem;
}

.help-figure figcaption,
.help-diagram figcaption,
.help-figure-row__caption {
  margin-block-start: var(--space-sm);
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
  text-align: center;
}

.help-figure-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr));
  gap: var(--space-lg);
  align-items: start;
}

.help-figure--in-row {
  margin-block-start: var(--space-lg);
}

.help-diagram {
  margin: var(--space-xl) 0 0;
  overflow-x: auto;
}

.help-locale-notice {
  margin: 0 0 var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--concept-line);
  border-radius: var(--radius-md);
  background: var(--concept-soft);
  font-size: var(--concept-font-sm);
}

.help-index .help-locale-notice {
  max-width: 42rem;
}

.help-pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin-block-start: clamp(2.5rem, 5vw, 4rem);
}

.help-pager__link {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-lg);
}

.help-pager__link span {
  color: var(--concept-muted);
  font-size: var(--concept-font-sm);
}

.help-pager__link--next {
  grid-column: 2;
  text-align: end;
}

/* ---------- Responsive ---------- */

@media (max-width: 54rem) {
  .feature-detail {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-detail--reverse .feature-detail__copy {
    order: 0;
  }

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

  /* On a narrow screen the chapter comes first; the chapter list follows it. */
  .help-toc {
    position: static;
    order: 2;
    max-height: none;
    padding-block-start: var(--space-xl);
    border-top: 1px solid var(--concept-line);
  }
}

@media (max-width: 44rem) {
  .help-guide div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-xs);
  }

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

  .help-pager__link--next {
    grid-column: 1;
  }
}

/* Same switch as base.css: the system setting unless the site setting overrides it. */
@media (prefers-reduced-motion: reduce) {
  :root:not([data-motion-override]) .feature-cards li:hover {
    transform: none;
  }
}

:root[data-motion-override='reduce'] .feature-cards li:hover {
  transform: none;
}

@media (forced-colors: active) {
  .feature-cards li,
  .feature-band,
  .help-guide,
  .help-card,
  .help-technical,
  .help-locale-notice,
  .help-chapter-list a,
  .help-pager__link,
  .feature-help__links a {
    border: 1px solid CanvasText;
  }

  .help-toc a[aria-current='page'] {
    border-inline-start-color: Highlight;
  }

  .feature-cards a:focus-visible::after,
  .help-search input:focus-visible {
    outline-color: Highlight;
  }
}