/*=========================================================
  HOME + CUSTOM CALCULATORS PAGES
  Hero, featured-calculator carousel, enterprise call-out,
  category directory and the service-page blocks.
  Palette tokens (--kc-*) come from css/style.css :root.
=========================================================*/

.kc-home {
  --kc-wrap: 1240px;
  font-family: var(--body-font-family);
  color: var(--primary-color);
}

.kc-wrap {
  max-width: var(--kc-wrap);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* style.css sizes every p/li at 20px for calculator pages; these
   pages read better on a smaller, steadier scale. */
.kc-home p,
.kc-home li {
  font-size: 1rem;
  line-height: 1.55;
  font-weight: var(--font-weight-normal);
  color: var(--primary-color);
}

/* style.css also pins every <a> to the 20px paragraph size. */
.kc-home a {
  font-size: inherit;
}

.kc-home h2,
.kc-home h3 {
  font-family: var(--title-font-family);
  color: var(--kc-navy);
}

.kc-eyebrow {
  display: inline-block;
  font-size: 0.78rem !important;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kc-accent-deep);
  margin: 0 0 0.5rem;
}

.kc-section {
  padding: 3.25rem 0;
}

.kc-section--tint {
  background: var(--section-bg-color);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.kc-section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 2rem;
}

.kc-section-head h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.kc-section-head p {
  margin: 0;
  color: var(--primary-color);
}

/*---------------------------------------------------------
  BUTTONS
---------------------------------------------------------*/
.kc-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.kc-cta-btn:hover,
.kc-cta-btn:focus-visible {
  transform: translateY(-2px);
  text-decoration: none;
}

.kc-cta-btn--accent {
  background: var(--kc-accent);
  color: var(--kc-navy);
}

.kc-cta-btn--accent:hover,
.kc-cta-btn--accent:focus-visible {
  background: #fff;
  color: var(--kc-navy);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.kc-cta-btn--ghost {
  border-color: rgba(255, 255, 255, 0.45);
  color: var(--kc-text-light);
}

.kc-cta-btn--ghost:hover,
.kc-cta-btn--ghost:focus-visible {
  border-color: var(--kc-accent);
  color: var(--kc-accent);
}

.kc-cta-btn--solid {
  background: var(--kc-teal-ink);
  color: #fff;
}

.kc-cta-btn--solid:hover,
.kc-cta-btn--solid:focus-visible {
  background: var(--kc-navy);
  color: #fff;
  box-shadow: 0 10px 24px rgba(20, 44, 53, 0.25);
}

/*---------------------------------------------------------
  HERO
---------------------------------------------------------*/
.kc-hero {
  position: relative;
  overflow: hidden;
  color: var(--kc-text-light);
  background:
    radial-gradient(55% 120% at 85% 0%, rgba(95, 199, 219, 0.22), transparent 70%),
    radial-gradient(40% 90% at 0% 100%, rgba(47, 143, 163, 0.25), transparent 70%),
    linear-gradient(160deg, var(--kc-navy-2), var(--kc-navy));
  border-bottom: 3px solid var(--kc-accent-deep);
  padding: 3.5rem 0 3rem;
}

/* Faint engineering-paper grid behind the hero copy. */
.kc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, #000 30%, transparent);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent);
  pointer-events: none;
}

.kc-hero .kc-wrap {
  position: relative;
  text-align: center;
}

.kc-hero .kc-eyebrow {
  color: var(--kc-accent);
}

.kc-hero h1 {
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  font-weight: 700;
  line-height: 1.12;
  color: #fff;
  margin: 0 auto 0.9rem;
  max-width: 900px;
}

.kc-hero h1 span {
  color: var(--kc-accent);
}

.kc-hero .kc-hero-lead {
  font-size: 1.15rem !important;
  color: var(--kc-text-dim);
  max-width: 720px;
  margin: 0 auto 1.6rem;
}

.kc-hero-search {
  display: flex;
  max-width: 620px;
  margin: 0 auto 1.4rem;
  background: #fff;
  border-radius: 999px;
  padding: 0.3rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.kc-hero-search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: 0.6rem 1.1rem;
  font-size: 1rem;
  color: var(--kc-navy);
  outline: none;
}

.kc-hero-search button {
  border: none;
  border-radius: 999px;
  background: var(--kc-teal-ink);
  color: #fff;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

.kc-hero-search button:hover,
.kc-hero-search button:focus-visible {
  background: var(--kc-navy);
}

.kc-hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kc-hero-stats li {
  list-style: none;
  font-size: 0.9rem !important;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--kc-line);
  color: var(--kc-text-light);
}

.kc-hero-stats strong {
  color: var(--kc-accent);
}

/*---------------------------------------------------------
  FEATURED CAROUSEL
  Cards slide one at a time; the set is cloned once so the
  track wraps without a visible jump (js in index.html).
---------------------------------------------------------*/
.kc-carousel {
  position: relative;
  padding: 0 3.25rem;
}

.kc-carousel-viewport {
  overflow: hidden;
  padding: 0.5rem 0 1rem;
}

.kc-carousel-track {
  display: flex;
  will-change: transform;
}

.kc-feature {
  flex: 0 0 33.3333%;
  max-width: 33.3333%;
  padding: 0 0.6rem;
  box-sizing: border-box;
}

@media (max-width: 991.98px) {
  .kc-feature { flex-basis: 50%; max-width: 50%; }
}

@media (max-width: 640px) {
  .kc-feature { flex-basis: 100%; max-width: 100%; }
  .kc-carousel { padding: 0 2.4rem; }
}

.kc-feature-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 4px 16px rgba(20, 44, 53, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.kc-feature-card:hover,
.kc-feature-card:focus-visible {
  transform: translateY(-4px);
  color: inherit;
  text-decoration: none;
  box-shadow: 0 14px 30px rgba(20, 44, 53, 0.16);
}

.kc-feature-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(180deg, #fff, var(--kc-tint));
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.kc-feature-thumb img,
.kc-feature-thumb svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.75rem;
  box-sizing: border-box;
}

.kc-feature-tag {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--kc-navy);
  color: var(--kc-accent);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
}

.kc-feature-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1rem 1.15rem 1.15rem;
}

.kc-feature-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.45rem;
}

.kc-feature-body p {
  font-size: 0.93rem !important;
  line-height: 1.45;
  margin: 0 0 0.9rem;
  flex: 1;
}

.kc-feature-cta {
  font-weight: 600;
  color: var(--kc-teal-ink);
}

.kc-feature-card:hover .kc-feature-cta {
  text-decoration: underline;
}

.kc-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  padding: 0;
  border: 2px solid var(--kc-teal-ink);
  background: #fff;
  color: var(--kc-teal-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.kc-arrow:hover,
.kc-arrow:focus-visible {
  background: var(--kc-teal-ink);
  color: #fff;
}

.kc-arrow svg {
  width: 1.1rem;
  height: 1.1rem;
}

.kc-arrow--prev { left: 0; }
.kc-arrow--next { right: 0; }

.kc-dots {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

.kc-dots button {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--kc-slate-line);
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.kc-dots button[aria-current="true"] {
  background: var(--kc-teal-ink);
  opacity: 1;
  transform: scale(1.3);
}

/*---------------------------------------------------------
  ENTERPRISE CALL-OUT
---------------------------------------------------------*/
.kc-enterprise {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 2.4rem 2.6rem;
  border-radius: 18px;
  color: var(--kc-text-light);
  background:
    radial-gradient(70% 140% at 100% 0%, rgba(95, 199, 219, 0.25), transparent 65%),
    linear-gradient(140deg, var(--kc-navy-3), var(--kc-navy));
  box-shadow: 0 18px 40px rgba(20, 44, 53, 0.22);
}

.kc-enterprise h2 {
  color: #fff;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  margin: 0 0 0.7rem;
}

.kc-enterprise p {
  color: var(--kc-text-dim);
  margin: 0 0 1.3rem;
}

.kc-enterprise .kc-eyebrow {
  color: var(--kc-accent);
}

.kc-enterprise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.kc-enterprise-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.kc-enterprise-list li {
  list-style: none;
  position: relative;
  padding: 0.6rem 0.9rem 0.6rem 2.4rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--kc-line);
  border-radius: 10px;
  color: var(--kc-text-light);
  font-size: 0.95rem !important;
}

.kc-enterprise-list li::before {
  content: "";
  position: absolute;
  left: 0.9rem;
  top: 50%;
  width: 0.8rem;
  height: 0.45rem;
  border-left: 2px solid var(--kc-accent);
  border-bottom: 2px solid var(--kc-accent);
  transform: translateY(-70%) rotate(-45deg);
}

@media (max-width: 860px) {
  .kc-enterprise {
    grid-template-columns: 1fr;
    padding: 1.8rem 1.4rem;
  }
}

/*---------------------------------------------------------
  CATEGORY DIRECTORY
---------------------------------------------------------*/
.kc-jump {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
  margin: 0 auto 2rem;
  padding: 0;
  list-style: none;
  max-width: 980px;
}

.kc-jump li {
  list-style: none;
  padding: 0;
}

.kc-jump a {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border-color);
  color: var(--kc-teal-ink);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.kc-jump a:hover,
.kc-jump a:focus-visible {
  background: var(--kc-teal-ink);
  border-color: var(--kc-teal-ink);
  color: #fff;
}

/* Masonry via CSS columns: short and long categories pack without gaps. */
.kc-dir {
  columns: 3 330px;
  column-gap: 1.25rem;
}

.kc-cat {
  break-inside: avoid;
  margin: 0 0 1.25rem;
  background: #fff;
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--kc-teal-ink);
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(20, 44, 53, 0.05);
  padding: 1.1rem 1.15rem 0.9rem;
  scroll-margin-top: 1rem;
}

.kc-cat-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.kc-cat h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.kc-cat-count {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--kc-teal-ink);
  background: var(--kc-tint);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
}

.kc-cat .kc-cat-blurb {
  font-size: 0.88rem !important;
  color: #5b6b71;
  margin: 0 0 0.6rem;
}

.kc-cat ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.kc-cat li {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.95rem !important;
  line-height: 1.3;
}

.kc-cat li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.5rem;
  margin: 0 -0.5rem;
  border-radius: 7px;
  color: var(--kc-navy);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.kc-cat li a::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--kc-accent-deep);
  transition: transform 0.15s ease;
}

.kc-cat li a:hover,
.kc-cat li a:focus-visible {
  background: var(--kc-tint);
  color: var(--kc-teal-ink);
}

.kc-cat li a:hover::before {
  transform: scale(1.5);
}

.kc-cat li.kc-sub a {
  padding-left: 1.5rem;
  font-size: 0.9rem;
}

/*---------------------------------------------------------
  CUSTOM CALCULATORS PAGE
---------------------------------------------------------*/
.kc-svc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.25rem;
}

.kc-svc {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.4rem 1.4rem 1.2rem;
  box-shadow: 0 4px 16px rgba(20, 44, 53, 0.06);
}

.kc-svc-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--kc-tint);
  color: var(--kc-teal-ink);
  margin-bottom: 0.85rem;
}

.kc-svc-icon svg {
  width: 26px;
  height: 26px;
}

.kc-svc h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.45rem;
}

.kc-svc p {
  font-size: 0.95rem !important;
  margin: 0 0 0.6rem;
}

.kc-svc ul {
  margin: 0;
  padding-left: 1.1rem;
}

.kc-svc li {
  font-size: 0.9rem !important;
  padding: 0;
  margin: 0 0 0.2rem;
  color: #4a5a60;
}

/* Case study: the oil level test bench. */
.kc-case {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.25rem;
  align-items: center;
}

.kc-case h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  font-weight: 700;
  margin: 0 0 0.8rem;
}

.kc-case p {
  margin: 0 0 0.9rem;
}

.kc-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow;
  display: grid;
  gap: 0.6rem;
}

.kc-flow li {
  list-style: none;
  counter-increment: flow;
  position: relative;
  padding: 0.85rem 1rem 0.85rem 3.3rem;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 0.95rem !important;
}

.kc-flow li::before {
  content: counter(flow);
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--kc-teal-ink);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kc-flow li strong {
  display: block;
  color: var(--kc-navy);
}

.kc-flow li.kc-flow-pass::before {
  content: "✓";
  background: #2e8b57;
}

@media (max-width: 860px) {
  .kc-case { grid-template-columns: 1fr; }
}

.kc-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  counter-reset: step;
}

.kc-step {
  counter-increment: step;
  padding: 1.2rem;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--border-color);
}

.kc-step::before {
  content: "0" counter(step);
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--kc-accent-deep);
  margin-bottom: 0.3rem;
}

.kc-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.kc-step p {
  font-size: 0.92rem !important;
  margin: 0;
}

.kc-pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kc-pill-row li {
  list-style: none;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  background: var(--kc-tint);
  color: var(--kc-selected-ink);
  font-weight: 600;
  font-size: 0.9rem !important;
}

@media (max-width: 640px) {
  .kc-section { padding: 2.4rem 0; }
  .kc-hero { padding: 2.5rem 0 2.2rem; }
  .kc-hero-search button { padding: 0.6rem 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .kc-cta-btn,
  .kc-feature-card,
  .kc-carousel-track {
    transition: none !important;
  }
}

/* Capability groups on the custom calculators page. */
.kc-svc-group {
  font-size: 1.25rem !important;
  font-weight: 700;
  margin: 2.2rem 0 0.2rem;
}

.kc-svc-group:first-of-type {
  margin-top: 0;
}

.kc-home .kc-svc-group-blurb {
  margin: 0 0 1rem;
  color: #5b6b71;
}

.kc-svc-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1100px) {
  .kc-svc-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .kc-svc-grid--4 { grid-template-columns: 1fr; }
}