/* ===========================================================================
   Cellentia — landing page
   Built on the Cellentia Design System tokens (_ds/.../styles.css).
   Only tokens are used for colour, type, spacing, radii, shadow and motion —
   no raw hex values below this line.
   ========================================================================= */

html { scroll-behavior: smooth; }
body { overflow-x: hidden; }

/* Anchors must clear the sticky header. */
:target { scroll-margin-top: 96px; }
section[id] { scroll-margin-top: 88px; }

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: calc(-1 * var(--sp-13));
  z-index: 100;
  background: var(--surface-card);
  color: var(--text-strong);
  font: var(--type-label);
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-md);
  transition: top var(--dur-fast) var(--ease-standard);
}
.skip-link:focus { top: var(--sp-4); text-decoration: none; }

/* ---------- Layout primitives ------------------------------------------ */

.wrap {
  max-width: var(--layout-max);
  margin: 0 auto;
  padding-inline: var(--layout-gutter);
}
.wrap--narrow { max-width: 880px; }

.eyebrow {
  font: var(--type-eyebrow);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--text-accent);
  margin: 0 0 var(--sp-4);
}
.eyebrow--on-dark { color: var(--cl-blue-300); }

.lede {
  font: var(--type-body-lg);
  color: var(--text-muted);
  max-width: 620px;
  text-wrap: pretty;
}

/* Decorative brand mark washed into dark sections. */
.watermark {
  position: absolute;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

/* ---------- Buttons ----------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  height: 42px;
  padding: 0 22px;
  font: var(--type-button);
  letter-spacing: var(--ls-snug);
  border: 1px solid transparent;
  border-radius: var(--radius-button);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-control);
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(.97); }

.btn--lg { height: 52px; padding: 0 30px; font-size: var(--fs-md); }
.btn--sm { height: 34px; padding: 0 16px; font-size: var(--fs-2xs); }
.btn--full { width: 100%; }

.btn--primary {
  background: var(--action-primary);
  color: var(--text-on-accent);
  box-shadow: var(--shadow-accent);
}
.btn--primary:hover {
  background: var(--action-primary-hover);
  color: var(--text-on-accent);
  box-shadow: 0 16px 34px rgba(81, 112, 255, .38);
}

.btn--ghost-inverse {
  background: transparent;
  color: var(--text-on-dark);
  border-color: var(--border-inverse);
}
.btn--ghost-inverse:hover {
  background: rgba(255, 255, 255, .08);
  color: var(--text-on-dark);
}

.btn__icon { flex-shrink: 0; }

/* ---------- Header ------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-7);
  padding-block: var(--sp-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.brand:hover { text-decoration: none; }
.brand__mark { height: 40px; width: auto; display: block; }
.brand__name {
  font: var(--fw-bold) var(--fs-2xl)/1 var(--font-display);
  letter-spacing: var(--ls-tight);
  color: var(--cl-navy-800);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-left: auto;
}
.nav a {
  font: var(--type-label);
  color: var(--text-body);
}
.nav a:hover { color: var(--text-accent); text-decoration: none; }
/* The nav's own CTA only exists for the collapsed menu; on desktop the
   standalone .site-header__cta is the one shown. */
.nav > .btn { display: none; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--r-sm);
  color: var(--text-strong);
  cursor: pointer;
  transition: var(--transition-control);
}
.nav-toggle:hover { background: var(--surface-sunken); }

/* ---------- Hero -------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--surface-inverse);
}
.hero .watermark { right: -180px; top: -120px; width: 620px; opacity: .14; }
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: var(--sp-10);
  align-items: end;
  padding-block: 120px 112px;
}
.hero__copy { max-width: 640px; }
.hero h1 {
  font: var(--type-display);
  letter-spacing: var(--ls-tight);
  color: var(--text-on-dark);
  margin: 0 0 var(--sp-6);
  text-wrap: pretty;
}
.hero__sub {
  font: var(--type-body-lg);
  color: var(--text-on-dark-muted);
  margin: 0 0 var(--sp-8);
  max-width: 560px;
  text-wrap: pretty;
}
.hero__actions {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  align-items: center;
}

.hero__aside { display: grid; gap: var(--sp-4); }
.stat-card {
  border: 1px solid var(--border-inverse);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
}
.stat-card__figure {
  font: var(--fw-extrabold) var(--fs-5xl)/1 var(--font-display);
  color: var(--cl-blue-400);
  margin: 0 0 var(--sp-3);
}
.stat-card p:last-child {
  font: var(--type-body-sm);
  color: var(--text-on-dark-muted);
  margin: 0;
}
.stat-card .eyebrow { margin-bottom: var(--sp-2); }

/* ---------- About ------------------------------------------------------- */

.about {
  background: var(--surface-sunken);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.about__inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: var(--sp-10);
  align-items: start;
  padding-block: var(--section-y);
}
.about__copy .section__title { margin-bottom: var(--sp-6); }
.about__copy p:not(.eyebrow) {
  font: var(--type-body-lg);
  color: var(--text-muted);
  max-width: 620px;
  text-wrap: pretty;
}
.about__copy p:not(.eyebrow) + p { margin-top: var(--sp-5); }

.about__how {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--sp-7);
}
.about__how h3 {
  font: var(--type-h4);
  color: var(--text-strong);
  margin: 0 0 var(--sp-6);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-6);
}
.step {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-4);
  align-items: start;
}
/* Connector between the numbered markers. */
.step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 38px;
  bottom: calc(-1 * var(--sp-6));
  width: 2px;
  background: var(--border-subtle);
}
.step__num {
  width: 32px;
  height: 32px;
  border-radius: var(--r-circle);
  background: var(--surface-accent-soft);
  color: var(--cl-blue-600);
  font: var(--fw-bold) var(--fs-sm)/1 var(--font-display);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step h4 {
  font: var(--type-h4);
  font-size: var(--fs-md);
  color: var(--text-strong);
  margin: 0 0 var(--sp-2);
}
.step p {
  font: var(--type-body-sm);
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Services ---------------------------------------------------- */

.section { padding-block: var(--section-y) var(--sp-9); }
.section__title {
  font: var(--type-h1);
  letter-spacing: var(--ls-tight);
  color: var(--text-strong);
  margin: 0 0 var(--sp-5);
  max-width: 720px;
  text-wrap: pretty;
}
.section__lede { margin: 0 0 var(--sp-9); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.svc-card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  padding: var(--sp-7);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.svc-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.svc-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--surface-accent-soft);
  color: var(--cl-blue-600);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-5);
}
.svc-card h3 {
  font: var(--type-h4);
  color: var(--text-strong);
  margin: 0 0 var(--sp-3);
}
.svc-card__desc {
  font: var(--type-body-sm);
  color: var(--text-muted);
  margin: 0 0 var(--sp-5);
}
.svc-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}
.svc-card li {
  font: var(--type-body-sm);
  color: var(--text-body);
  padding-left: var(--sp-5);
  position: relative;
}
.svc-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: var(--r-circle);
  background: var(--cl-blue-300);
}

/* ---------- Differentiators (dark band) --------------------------------- */

.band-dark {
  position: relative;
  overflow: hidden;
  background: var(--surface-inverse-deep);
  margin-top: var(--sp-9);
}
.band-dark .watermark { left: -140px; bottom: -200px; width: 520px; opacity: .1; }
.band-dark__inner { position: relative; z-index: 1; padding-block: 88px; }
.band-dark h2 {
  font: var(--type-h1);
  letter-spacing: var(--ls-tight);
  color: var(--text-on-dark);
  margin: 0 0 var(--sp-8);
  max-width: 700px;
  text-wrap: pretty;
}
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.pillars h3 {
  font: var(--type-h4);
  color: var(--text-on-dark);
  margin: 0 0 var(--sp-3);
}
.pillars p {
  font: var(--type-body-sm);
  color: var(--text-on-dark-muted);
  margin: 0;
}

/* ---------- FAQ --------------------------------------------------------- */

.faq-list { display: grid; gap: var(--sp-3); }

.faq-item {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-standard);
}
.faq-item:has(.faq-q[aria-expanded="true"]) { border-color: var(--border-default); }

.faq-q {
  width: 100%;
  background: none;
  border: 0;
  text-align: left;
  padding: var(--sp-5) var(--sp-6);
  display: flex;
  gap: var(--sp-5);
  align-items: center;
  cursor: pointer;
  font: var(--type-h4);
  color: var(--text-strong);
}
.faq-q > span:first-child { flex: 1; }
.faq-q__sign {
  color: var(--text-accent);
  font: var(--fw-bold) var(--fs-xl)/1 var(--font-display);
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-out);
}
.faq-q[aria-expanded="true"] .faq-q__sign { transform: rotate(45deg); }

.faq-a {
  padding: 0 var(--sp-6) var(--sp-6);
  font: var(--type-body);
  color: var(--text-muted);
  max-width: 640px;
}
.faq-a[hidden] { display: none; }

/* ---------- Contact ----------------------------------------------------- */

.contact { padding-block: var(--sp-9) var(--section-y); }

.contact-card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  overflow: hidden;
}

.contact-aside {
  position: relative;
  overflow: hidden;
  background: var(--surface-inverse);
  padding: var(--sp-9) var(--sp-8);
}
.contact-aside .watermark { right: -120px; bottom: -140px; width: 360px; opacity: .12; }
.contact-aside__inner { position: relative; z-index: 1; }
.contact-aside h2 {
  font: var(--type-h2);
  letter-spacing: var(--ls-tight);
  color: var(--text-on-dark);
  margin: 0 0 var(--sp-4);
  text-wrap: pretty;
}
.contact-aside__lede {
  font: var(--type-body);
  color: var(--text-on-dark-muted);
  margin: 0 0 var(--sp-7);
}
.contact-aside .btn { margin-bottom: var(--sp-8); }

.contact-details {
  display: grid;
  gap: var(--sp-4);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--border-inverse);
}
.contact-details .eyebrow { margin-bottom: var(--sp-1); }
.contact-details a,
.contact-details p:last-child {
  font: var(--type-mono);
  color: var(--text-on-dark);
  margin: 0;
}
.contact-details a:hover { color: var(--cl-blue-300); }

/* ---------- Form -------------------------------------------------------- */

.contact-form-pane { padding: var(--sp-9) var(--sp-8); }

.form { display: grid; gap: var(--sp-5); }
.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-5);
}

.field { display: flex; flex-direction: column; gap: var(--sp-2); }
.field > label {
  font: var(--type-label);
  color: var(--text-strong);
}
.field__req { color: var(--cl-danger-500); margin-left: 4px; }
.field__hint {
  font: var(--type-body-sm);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.control {
  width: 100%;
  font: var(--type-body);
  color: var(--text-strong);
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-control);
  transition: var(--transition-control);
  outline: none;
}
input.control,
select.control { height: 44px; padding: 0 14px; }
textarea.control {
  padding: 12px 14px;
  resize: vertical;
  line-height: var(--lh-normal);
}
.control:focus {
  border-color: var(--border-accent);
  box-shadow: var(--focus-ring);
}
.control::placeholder { color: var(--text-subtle); }

.select-wrap { position: relative; width: 100%; }
.select-wrap select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  cursor: pointer;
}
.select-wrap::after {
  content: "\25BC";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-subtle);
  font-size: 11px;
}

.form__note {
  font: var(--type-body-sm);
  color: var(--text-subtle);
  margin: 0;
}

.form-success {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: var(--sp-4);
}
.form-success[hidden] { display: none; }
.form-success__badge {
  width: 44px;
  height: 44px;
  border-radius: var(--r-circle);
  background: var(--cl-success-50);
  color: var(--cl-success-500);
  display: flex;
  align-items: center;
  justify-content: center;
}
.form-success h3 {
  font: var(--type-h3);
  color: var(--text-strong);
  margin: 0;
}
.form-success p {
  font: var(--type-body);
  color: var(--text-muted);
  margin: 0;
  max-width: 420px;
}

/* ---------- Footer ------------------------------------------------------ */

.site-footer { background: var(--surface-inverse-deep); }
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--sp-9);
  padding-block: var(--sp-9) var(--sp-7);
}
.site-footer .brand__name { color: var(--text-on-dark); font-size: var(--fs-3xl); }
.site-footer .brand__mark { height: 52px; }
.site-footer__about {
  font: var(--type-body-sm);
  color: var(--text-on-dark-muted);
  margin: var(--sp-5) 0 0;
  max-width: 320px;
}
.link-col { display: grid; gap: var(--sp-2); }
.link-col a {
  font: var(--type-body-sm);
  color: var(--text-on-dark-muted);
}
.link-col a:hover { color: var(--text-on-dark); }

.site-footer__legal { border-top: 1px solid var(--border-inverse); }
.site-footer__legal-inner {
  display: flex;
  gap: var(--sp-5);
  flex-wrap: wrap;
  justify-content: space-between;
  padding-block: var(--sp-5);
}
.site-footer__legal p {
  font: var(--type-body-sm);
  color: var(--text-subtle);
  margin: 0;
}
.site-footer__legal .eyebrow { color: var(--text-subtle); margin: 0; }

/* ---------- Floating WhatsApp ------------------------------------------- */

.wa-fab {
  position: fixed;
  right: var(--sp-6);
  bottom: var(--sp-6);
  z-index: 50;
  width: 56px;
  height: 56px;
  border-radius: var(--r-circle);
  background: var(--action-primary);
  color: var(--text-on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-accent);
  transition: var(--transition-control);
}
.wa-fab:hover {
  background: var(--action-primary-hover);
  color: var(--text-on-accent);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ===========================================================================
   Responsive
   ========================================================================= */

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: var(--sp-8);
    padding-block: 88px 80px;
  }
  .hero__aside { grid-template-columns: repeat(2, 1fr); }
  .about__inner { grid-template-columns: 1fr; gap: var(--sp-8); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; gap: var(--sp-7); }
  .contact-card { grid-template-columns: 1fr; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
}

@media (max-width: 960px) {
  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: var(--sp-3) var(--layout-gutter) var(--sp-5);
    background: var(--surface-card);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-md);
  }
  .nav[data-open="true"] { display: flex; }
  .nav a {
    padding: var(--sp-4) 0;
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav > .btn {
    display: inline-flex;
    margin-top: var(--sp-4);
    border-bottom: 0;
    justify-content: center;
  }
  .nav-toggle { display: flex; }
  .site-header__inner { position: relative; gap: var(--sp-4); }
  .site-header .site-header__cta { display: none; }
}

@media (max-width: 720px) {
  :root { --section-y: 64px; }

  .hero h1 { font-size: var(--fs-4xl); }
  .hero__inner { padding-block: 64px 56px; }
  .hero__aside { grid-template-columns: 1fr; }
  .hero .watermark { right: -220px; top: -80px; width: 480px; }
  .hero__actions .btn { width: 100%; }

  .section__title,
  .band-dark h2 { font-size: var(--fs-3xl); }
  .about__inner { padding-block: var(--section-y); }
  .about__how { padding: var(--sp-6); }
  .card-grid { grid-template-columns: 1fr; }
  .band-dark__inner { padding-block: 64px; }

  .faq-q { font-size: var(--fs-md); padding: var(--sp-4) var(--sp-5); }
  .faq-a { padding: 0 var(--sp-5) var(--sp-5); }

  .contact-aside,
  .contact-form-pane { padding: var(--sp-7) var(--sp-6); }
  .contact-aside .btn { width: 100%; }
  .form__row { grid-template-columns: 1fr; }

  .site-footer__inner { grid-template-columns: 1fr; gap: var(--sp-7); }
  .site-footer__about { max-width: none; }

  .wa-fab { right: var(--sp-4); bottom: var(--sp-4); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .svc-card:hover { transform: none; }
}

@media print {
  .site-header, .wa-fab, .nav-toggle { display: none !important; }
  .hero, .band-dark, .contact-aside, .site-footer { background: var(--surface-card) !important; }
  .hero h1, .band-dark h2, .contact-aside h2 { color: var(--text-strong) !important; }
}