/* Packaging artwork problem guide and its shared pathways. */

.problem-guide-page {
  background-color: #f5f6f1;
  background-image: none;
}

.problem-guide-page main {
  overflow: clip;
}

.problem-guide-hero {
  position: relative;
  padding: clamp(70px, 8vw, 112px) 0 clamp(62px, 7vw, 94px);
  border-bottom: 1px solid var(--line-strong);
  background: linear-gradient(135deg, #fbfcf8 0%, #f2f5ec 100%);
}

.problem-guide-hero::before {
  content: none;
}

.problem-guide-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
  gap: clamp(76px, 9vw, 144px);
  align-items: center;
}

.problem-guide-eyebrow,
.problem-category-index,
.problem-number,
.problem-card-label,
.problem-guide-note-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.problem-guide-eyebrow {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin: 0 0 24px;
}

.problem-guide-eyebrow::before {
  width: 34px;
  height: 4px;
  background: var(--signal);
  content: "";
}

.problem-guide-hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(48px, 6.1vw, 86px);
  line-height: .98;
  letter-spacing: -.052em;
}

.problem-guide-hero h1 span {
  position: relative;
  z-index: 0;
  white-space: nowrap;
}

.problem-guide-hero h1 span::after {
  content: none;
}

.problem-guide-lead {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--graphite);
  font-size: clamp(19px, 1.55vw, 23px);
  line-height: 1.55;
}

.problem-guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.problem-guide-secondary-link {
  display: inline-flex;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  align-items: center;
  background: rgba(255,255,255,.72);
  font-weight: 700;
  text-decoration: none;
}

.problem-guide-secondary-link:hover,
.problem-guide-secondary-link:focus-visible {
  border-color: var(--ink);
  background: var(--surface);
}

.problem-guide-visual {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--ink);
  background: rgba(255,255,255,.86);
  box-shadow: 18px 18px 0 rgba(177,232,14,.75);
}

.problem-guide-visual::before {
  position: absolute;
  top: -10px;
  right: 22px;
  width: 82px;
  height: 18px;
  border: 1px solid var(--ink);
  background: var(--signal);
  content: "20 CHECKS";
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
}

.problem-guide-visual img {
  width: 100%;
  min-height: 92px;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.problem-guide-visual img:last-child {
  grid-column: 1 / -1;
  width: 50%;
  justify-self: center;
}

.problem-guide-nav {
  position: sticky;
  z-index: 12;
  top: var(--header-height);
  border-bottom: 1px solid var(--line-strong);
  background: rgba(246,247,242,.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.problem-guide-nav .shell {
  display: flex;
  gap: 8px;
  padding-block: 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.problem-guide-nav .shell::-webkit-scrollbar {
  display: none;
}

.problem-guide-nav a {
  flex: 0 0 auto;
  padding: 9px 12px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-decoration: none;
  text-transform: uppercase;
}

.problem-guide-nav a:hover,
.problem-guide-nav a:focus-visible {
  border-color: var(--ink);
  background: var(--signal);
}

.problem-search-section {
  padding: 38px 0 0;
  background: #f5f6f1;
}

.problem-search-form {
  padding: clamp(24px, 3.5vw, 38px);
  border: 1px solid var(--ink);
  background: var(--surface);
  box-shadow: 8px 8px 0 rgba(16,20,17,.08);
}

.problem-search-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .65fr);
  gap: 28px;
  align-items: end;
}

.problem-search-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
}

.problem-search-heading h2 {
  margin: 0;
  font-size: clamp(27px, 3.2vw, 43px);
  line-height: 1.04;
  letter-spacing: -.035em;
}

.problem-search-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.problem-search-control {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  margin-top: 24px;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  background: #fff;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.problem-search-control:focus-within {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(177,232,14,.5);
}

.problem-search-control svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}

.problem-search-control input {
  width: 100%;
  min-height: 58px;
  padding: 14px 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: 600 17px/1.3 var(--font-sans);
}

.problem-search-control input::placeholder { color: #7d887e; }

.problem-search-control button {
  min-height: 36px;
  padding: 7px 11px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font: 700 11px/1 var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.problem-search-control button:hover,
.problem-search-control button:focus-visible { background: var(--signal); }

.problem-search-no-results {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--signal);
  background: #eef1ea;
  color: var(--graphite);
}

.problem-guide-page [hidden] { display: none !important; }

.problem-guide-intro {
  padding: 42px 0 0;
}

.problem-guide-note {
  display: grid;
  grid-template-columns: minmax(170px, .35fr) minmax(0, 1.65fr);
  gap: 32px;
  padding: 28px 30px;
  border: 1px solid var(--line-strong);
  border-left: 6px solid var(--signal);
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}

.problem-guide-note p {
  max-width: 850px;
  margin: 0;
  color: var(--graphite);
}

.problem-category {
  padding: clamp(76px, 8vw, 112px) 0;
  scroll-margin-top: calc(var(--header-height) + 72px);
}

.problem-category + .problem-category {
  border-top: 1px solid var(--line-strong);
}

.problem-category:nth-of-type(even) {
  background: rgba(238,241,234,.58);
}

.problem-category-header {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  gap: clamp(34px, 6vw, 80px);
  margin-bottom: 42px;
  align-items: center;
}

.problem-category-graphic {
  position: relative;
  padding: 14px;
  border: 1px solid var(--ink);
  background: var(--surface);
  box-shadow: 10px 10px 0 var(--signal);
}

.problem-category-graphic img {
  display: block;
  width: 100%;
}

.problem-category-index {
  display: block;
  margin-bottom: 13px;
  color: var(--muted);
}

.problem-category-header h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(34px, 4vw, 57px);
  line-height: 1.03;
  letter-spacing: -.04em;
}

.problem-category-header p {
  max-width: 800px;
  margin: 16px 0 0;
  color: var(--graphite);
  font-size: 19px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.problem-card {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.92);
  box-shadow: 0 10px 30px rgba(16,20,17,.045);
  scroll-margin-top: calc(var(--header-height) + 100px);
  transition: border-color 180ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.problem-card:hover {
  border-color: var(--ink);
  box-shadow: 0 18px 42px rgba(16,20,17,.08);
  transform: translateY(-2px);
}

.problem-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--signal) 0 24%, transparent 24%);
  content: "";
}

.problem-card-topline {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
}

.problem-number {
  display: inline-flex;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  align-items: center;
  justify-content: center;
  background: var(--signal);
  letter-spacing: 0;
}

.problem-card-label {
  color: var(--muted);
  letter-spacing: .08em;
}

.problem-card h3 {
  margin: 22px 0 12px;
  font-size: clamp(22px, 2.25vw, 31px);
  line-height: 1.12;
  letter-spacing: -.025em;
}

.problem-symptom {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 15px;
  font-style: italic;
}

.problem-answer {
  margin: 0;
  color: var(--graphite);
}

.problem-answer strong {
  color: var(--ink);
}

.problem-related {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 15px;
  margin: 23px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  align-items: center;
}

.problem-related span {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.problem-related a {
  font-size: 15px;
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.problem-related a:hover,
.problem-related a:focus-visible {
  text-decoration-color: var(--signal);
  text-decoration-thickness: 4px;
}

.problem-guide-decision {
  padding: clamp(74px, 8vw, 110px) 0;
  background: var(--surface-dark);
  color: var(--white);
}

.problem-guide-decision .section-heading p {
  color: rgba(255,255,255,.68);
}

.problem-decision-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 38px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.2);
}

.problem-decision-card {
  position: relative;
  min-height: 190px;
  padding: 28px;
  background: var(--surface-dark);
}

.problem-decision-card::before {
  display: block;
  width: 44px;
  height: 4px;
  margin-bottom: 20px;
  background: var(--signal);
  content: "";
}

.problem-decision-card h3 {
  margin: 0 0 10px;
  font-size: 23px;
}

.problem-decision-card p {
  margin: 0 0 19px;
  color: rgba(255,255,255,.7);
}

.problem-decision-card a {
  color: var(--signal);
  font-weight: 700;
  text-underline-offset: 4px;
}

.problem-guide-references {
  padding: 62px 0;
  border-top: 1px solid var(--line-strong);
}

.problem-reference-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.problem-reference-grid a {
  min-height: 116px;
  padding: 18px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  font-weight: 700;
  text-decoration: none;
}

.problem-reference-grid a span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
}

.problem-reference-grid a:hover,
.problem-reference-grid a:focus-visible {
  border-color: var(--ink);
  box-shadow: inset 0 -5px 0 var(--signal);
}

/* Homepage preview of the guide. */
.homepage-problem-guide {
  padding: clamp(76px, 8vw, 112px) 0;
  border-block: 1px solid var(--line-strong);
  background: #f0f3eb;
}

.homepage-problem-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.homepage-problem-card {
  min-width: 0;
  padding: 20px 17px 22px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  text-decoration: none;
  transition: border-color 180ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.homepage-problem-card:hover,
.homepage-problem-card:focus-visible {
  border-color: var(--ink);
  box-shadow: 7px 7px 0 var(--signal);
  transform: translate(-2px, -2px);
}

.homepage-problem-card img {
  display: block;
  width: 100%;
  height: 94px;
  object-fit: contain;
}

.homepage-problem-card strong {
  display: block;
  margin-top: 14px;
  font-size: 18px;
  line-height: 1.18;
}

.homepage-problem-card span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.homepage-problem-action {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line-strong);
  align-items: center;
}

.homepage-problem-action p {
  max-width: 720px;
  margin: 0;
  color: var(--graphite);
}

/* Related problems on commercial service pages. */
.related-problems-section {
  padding: clamp(68px, 7vw, 96px) 0;
  border-top: 1px solid var(--line-strong);
  background: #eef1ea;
}

.related-problems-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.related-problem-card {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
}

.related-problem-card span {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.related-problem-card h3 {
  margin: 15px 0 9px;
  font-size: 21px;
  line-height: 1.16;
}

.related-problem-card p {
  margin: 0;
  color: var(--graphite);
  font-size: 15px;
}

.related-problems-link {
  display: inline-block;
  margin-top: 26px;
  font-weight: 700;
  text-underline-offset: 5px;
}

@media (max-width: 1080px) {
  .problem-guide-hero-inner {
    grid-template-columns: minmax(0, 1fr) 340px;
  }

  .homepage-problem-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .problem-reference-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .problem-guide-hero-inner,
  .problem-category-header,
  .problem-guide-note,
  .problem-search-heading {
    grid-template-columns: 1fr;
  }

  .problem-guide-hero-inner {
    gap: 58px;
  }

  .problem-guide-visual {
    max-width: 520px;
  }

  .problem-category-graphic {
    width: min(224px, 72vw);
  }

  .problem-grid,
  .problem-decision-grid,
  .related-problems-grid {
    grid-template-columns: 1fr;
  }

  .problem-reference-grid,
  .homepage-problem-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .homepage-problem-action {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .problem-guide-hero {
    padding-top: 52px;
  }

  .problem-guide-hero-inner {
    gap: 48px;
  }

  .problem-guide-hero h1 {
    font-size: clamp(43px, 13vw, 58px);
  }

  .problem-guide-hero h1 span {
    white-space: normal;
  }

  .problem-guide-visual {
    padding: 12px;
    box-shadow: 10px 10px 0 rgba(177,232,14,.8);
  }

  .problem-guide-visual img {
    min-height: 72px;
    padding: 4px;
  }

  .problem-guide-nav {
    top: var(--header-height);
  }

  .problem-guide-nav .shell {
    width: 100%;
    padding-inline: 18px;
  }

  .problem-search-section { padding-top: 24px; }
  .problem-search-form { padding: 22px 18px; box-shadow: 5px 5px 0 rgba(16,20,17,.08); }
  .problem-search-heading { gap: 12px; }
  .problem-search-control { grid-template-columns: 22px minmax(0, 1fr); padding: 0 12px; }
  .problem-search-control button { grid-column: 1 / -1; margin: 0 -12px; border-width: 1px 0 0; }

  .problem-card,
  .problem-guide-note,
  .problem-decision-card {
    padding: 22px;
  }

  .problem-reference-grid,
  .homepage-problem-grid {
    grid-template-columns: 1fr;
  }

  .homepage-problem-card {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    column-gap: 15px;
    align-items: center;
  }

  .homepage-problem-card img {
    grid-row: 1 / span 2;
    height: 78px;
  }

  .homepage-problem-card strong,
  .homepage-problem-card span {
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .problem-card,
  .homepage-problem-card {
    transition: none;
  }
}