/* ==========================================================================
   MHR Mühendislik — Base foundation (token-driven, no build step)
   Premium, accessible, fully responsive. Every visual value resolves to a token
   in tokens.css. Passes UI_QUALITY_GATE (focus rings, reduced-motion, tabular
   numerals, no horizontal scroll, safe-area insets).
   --------------------------------------------------------------------------
   Contents:
   1  Modern reset
   2  Base typography
   3  Layout: container / section / grid
   4  Blueprint signature
   5  Buttons
   6  Eyebrow / badges / mono readouts
   7  Header + primary nav + mega base
   8  Mobile drawer
   9  Hero
   10 Cards (service / project / post)
   11 Trust strip & feature lists
   12 Forms baseline
   13 Footer + pre-footer CTA band
   14 Sticky mobile CTA + WhatsApp FAB
   15 404 / empty states
   16 Utilities, focus ring, scroll-reveal
   17 Reduced motion
   ========================================================================== */

/* ==========================================================================
   1. Modern reset
   ========================================================================== */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: rgba(28, 111, 214, 0.12);
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* clip (not hidden) so we never scroll sideways WITHOUT breaking the sticky header */
  overflow-x: clip;
}

img,
picture,
video,
canvas,
svg { display: block; max-width: 100%; height: auto; }

svg { flex-shrink: 0; }

input,
button,
textarea,
select { font: inherit; color: inherit; }

button { background: none; border: none; cursor: pointer; }

a { color: var(--color-secondary); text-decoration: none; }
a:hover { color: var(--color-secondary-hover); }

ul, ol { list-style: none; padding: 0; }

p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }

:target { scroll-margin-top: calc(var(--header-h) + var(--space-3)); }

/* ==========================================================================
   2. Base typography
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  color: var(--color-text);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

h1 { font-size: clamp(var(--fs-hero-sm), 5vw + 1rem, var(--fs-page)); }
h2 { font-size: clamp(2rem, 3vw + 1rem, var(--fs-section)); }
h3 { font-size: var(--fs-card); letter-spacing: var(--tracking-tight); }
h4 { font-size: 1.25rem; letter-spacing: var(--tracking-tight); }

p { text-wrap: pretty; }

strong, b { font-weight: var(--fw-bold); }

::selection { background: rgba(62, 169, 53, 0.18); color: var(--color-text); }

/* ==========================================================================
   3. Layout: container / section / grid
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.container--full { max-width: none; padding-inline: 0; }
.measure { max-width: var(--measure); }

.section {
  position: relative;             /* stacking anchor for the blueprint layer */
  padding-block: var(--space-7);  /* 96 */
}
.section--feature { padding-block: var(--space-8); } /* 128 */
.section--tight { padding-block: var(--space-6); }
.section--navy {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.92);
}
.section--navy h2,
.section--navy h3 { color: var(--color-white); }

@media (max-width: 1023px) {
  .section, .section--feature { padding-block: var(--space-7); }
}
@media (max-width: 767px) {
  .section, .section--feature { padding-block: var(--space-6); }
}

.section__header { max-width: var(--measure); margin-bottom: var(--space-6); }
.section__header--center {
  margin-inline: auto;
  text-align: center;
}
@media (max-width: 767px) {
  .section__header { margin-bottom: var(--space-5); }
}

.section__eyebrow { margin-bottom: var(--space-2); }
.section__title {
  font-size: clamp(2rem, 3vw + 1rem, var(--fs-section));
  margin-bottom: var(--space-3);
}
.section__intro {
  font-size: var(--fs-body);
  color: var(--color-text-secondary);
  max-width: var(--measure);
  text-wrap: pretty;
}
.section--navy .section__intro { color: rgba(255, 255, 255, 0.72); }
.section__header--center .section__intro { margin-inline: auto; }

.section__cta {
  margin-top: var(--space-6);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.section__header--center .section__cta { justify-content: center; }

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--grid-gutter-mobile);
}
@media (min-width: 768px) {
  .grid { grid-template-columns: repeat(8, minmax(0, 1fr)); gap: var(--grid-gutter); }
}
@media (min-width: 1024px) {
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

/* Common auto-fit card grids (resilient to any item count) */
.card-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}
@media (min-width: 768px) { .card-grid { gap: var(--space-4); } }

/* ==========================================================================
   4. Blueprint signature (hairline grid + corner ticks)
   ========================================================================== */
.blueprint-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--blueprint-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--blueprint-line) 1px, transparent 1px);
  background-size: var(--blueprint-cell) var(--blueprint-cell);
  background-position: center top;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 92%);
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}
.blueprint-grid--dark {
  background-image:
    linear-gradient(to right, var(--blueprint-line-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--blueprint-line-dark) 1px, transparent 1px);
}

/* Corner registration ticks (L-marks) on hero / flagship cards */
.blueprint-corners { position: relative; }
.blueprint-corners::before,
.blueprint-corners::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--blueprint-tick);
  pointer-events: none;
  z-index: 1;
}
.blueprint-corners::before { top: 16px; left: 16px; border-right: 0; border-bottom: 0; }
.blueprint-corners::after  { bottom: 16px; right: 16px; border-left: 0; border-top: 0; }

/* content sits above the local blueprint layer */
.section > .container { position: relative; z-index: 1; }

/* ==========================================================================
   5. Buttons
   ========================================================================== */
.btn {
  --btn-pad-y: 12px;
  --btn-pad-x: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--btn-pad-y) var(--btn-pad-x);
  font-family: var(--font-body);
  font-size: var(--fs-button);
  font-weight: var(--fw-semibold);
  line-height: 1.2;
  letter-spacing: -0.01em;
  border-radius: var(--radius-button);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
  touch-action: manipulation;
  transition:
    background-color var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard);
}
.btn .icon { width: 1.15em; height: 1.15em; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background-color: var(--color-secondary-hover);
  color: var(--color-white);
  box-shadow: var(--shadow-accent);
}
.btn-primary:active { box-shadow: var(--shadow-sm); }

.btn-secondary {
  background-color: transparent;
  color: var(--color-secondary);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  padding-inline: var(--space-2);
}
.btn-ghost:hover { color: var(--color-secondary); background-color: var(--surface-muted); }

.btn-lg { --btn-pad-y: 16px; --btn-pad-x: 32px; }
.btn-block { width: 100%; }

/* On-navy / on-hero variants */
.btn-on-dark {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-on-dark:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
}

/* ==========================================================================
   6. Eyebrow / badges / mono readouts
   ========================================================================== */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-secondary);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}
.eyebrow--on-dark { color: var(--color-accent); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--tracking-mono);
}

/* Big animated stat readout */
.stat { display: flex; flex-direction: column; gap: var(--space-1); }
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-card);
  font-weight: var(--fw-bold);
  color: var(--color-accent);
  line-height: 1;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-text-secondary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  border-radius: var(--radius-pill);
  background: var(--surface-muted);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.badge .icon { width: 16px; height: 16px; color: var(--color-accent); }

/* ==========================================================================
   7. Header + primary nav
   ========================================================================== */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -100px;
  z-index: var(--z-toast);
  padding: 12px 20px;
  background: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-button);
  font-weight: var(--fw-semibold);
  transition: top var(--dur-fast) var(--ease-standard);
}
.skip-link:focus-visible { top: var(--space-2); color: var(--color-white); }

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  --nav-ink: var(--color-text);
  transition:
    background-color var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-h);
  transition: min-height var(--dur-base) var(--ease-standard);
}

/* Solid mode: legible from first paint (all inner pages) */
.site-header[data-header-mode="solid"],
.site-header[data-scrolled="true"] {
  background-color: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  --nav-ink: var(--color-text);
}
/* Transparent mode over the hero (front page, un-scrolled) */
.site-header[data-header-mode="transparent"] {
  --nav-ink: rgba(255, 255, 255, 0.92);
}
.site-header[data-header-mode="transparent"][data-scrolled="true"] {
  min-height: var(--header-h-scrolled);
}

/* Logo (image or text wordmark) */
.custom-logo-link { display: inline-flex; align-items: center; }
.custom-logo { height: 40px; width: auto; }
.site-logo { flex-shrink: 0; }
.site-logo--text {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  color: var(--nav-ink);
}
.site-logo__mark {
  font-family: var(--font-display);
  font-weight: var(--fw-extrabold);
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  line-height: 1;
}
.site-logo__m { color: var(--color-secondary); }
.site-logo__h { color: var(--nav-ink); }
.site-logo__r { color: var(--color-accent); }
.site-logo__word {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--nav-ink);
  opacity: 0.75;
}

.site-header__nav { margin-inline-start: var(--space-4); flex: 1; }
@media (max-width: 1023px) { .site-header__nav { display: none; } }

.nav-list { display: flex; align-items: center; gap: var(--space-3); }
.nav-item { position: relative; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--nav-ink);
  transition: color var(--dur-fast) var(--ease-standard);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur-fast) var(--ease-standard);
}
.nav-link:hover { color: var(--color-accent); }
.nav-link:hover::after,
.current-menu-item > .nav-link::after,
.current_page_item > .nav-link::after { transform: scaleX(1); }
.site-header[data-header-mode="transparent"]:not([data-scrolled="true"]) .nav-link:hover { color: var(--color-white); }

.site-header__utilities {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-inline-start: auto;
}
.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--nav-ink);
}
.phone-link .icon { width: 16px; height: 16px; color: var(--color-accent); }
.phone-link:hover { color: var(--color-accent); }
@media (max-width: 1023px) { .phone-link, .site-header__cta { display: none; } }

/* Hamburger */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-input);
  color: var(--nav-ink);
  touch-action: manipulation;
}
.hamburger .icon { width: 24px; height: 24px; }
.hamburger:hover { background: rgba(127, 127, 127, 0.1); }
@media (max-width: 1023px) { .hamburger { display: inline-flex; } }

/* Mega-menu base (structure ready for a later Walker/render) */
.mega-menu {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: var(--z-dropdown);
  min-width: 320px;
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
}
.mega-menu[hidden] { display: none; }

/* ==========================================================================
   8. Mobile drawer
   ========================================================================== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  background: rgba(15, 23, 42, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-standard), visibility var(--dur-base);
}
.mobile-drawer {
  position: fixed;
  top: 0; right: 0;
  z-index: var(--z-drawer);
  width: min(88vw, 400px);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.92);
  padding: var(--space-3);
  transform: translateX(100%);
  transition: transform 350ms var(--ease-emphasis);
}
.mobile-drawer .blueprint-grid { z-index: 0; opacity: 0.6; }
[data-drawer-open="true"] .drawer-overlay { opacity: 1; visibility: visible; }
[data-drawer-open="true"] .mobile-drawer { transform: translateX(0); }

.mobile-drawer__top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h-scrolled);
  margin-bottom: var(--space-2);
}
.mobile-drawer__top .site-logo--text { --nav-ink: var(--color-white); }
.drawer-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-input);
  color: var(--color-white);
}
.drawer-close:hover { background: rgba(255, 255, 255, 0.1); }

.mobile-drawer__nav { position: relative; z-index: 1; }
.mobile-drawer__nav a,
.mobile-nav-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 8px 4px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.125rem;
  font-weight: var(--fw-medium);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-drawer__nav a:hover,
.mobile-nav-list a:hover { color: var(--color-accent); }

.mobile-drawer__foot {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-drawer__foot .contact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: var(--fw-medium);
}
.mobile-drawer__foot .contact-row .icon { width: 20px; height: 20px; color: var(--color-accent); }
.mobile-drawer__foot .contact-row:hover { color: var(--color-white); }

/* ==========================================================================
   9. Hero
   ========================================================================== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(640px, 86vh, 940px);
  padding-block: var(--space-8) var(--space-7);
  margin-top: calc(-1 * var(--header-h)); /* header overlays transparent hero */
  color: var(--color-white);
  overflow: hidden;
  isolation: isolate;
  background-color: var(--color-primary);
}
@media (max-width: 767px) {
  .hero {
    min-height: 0;
    padding-block: calc(var(--header-h) + var(--space-6)) var(--space-6);
    align-items: flex-start;
  }
}

.hero__bg { position: absolute; inset: 0; z-index: -2; }
.hero__photo { width: 100%; height: 100%; object-fit: cover; }
.hero__gradient {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    rgba(15, 23, 42, 0.92) 0%,
    rgba(15, 23, 42, 0.72) 42%,
    rgba(15, 23, 42, 0.42) 100%
  );
}
/* When no photo has been set yet, a branded navy + blueprint fallback shows */
.hero__fallback {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(120% 80% at 80% 0%, rgba(28, 111, 214, 0.35), transparent 60%),
    radial-gradient(90% 90% at 0% 100%, rgba(62, 169, 53, 0.18), transparent 55%),
    var(--color-primary);
}
.hero__blueprint {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--blueprint-line-dark) 1px, transparent 1px),
    linear-gradient(to bottom, var(--blueprint-line-dark) 1px, transparent 1px);
  background-size: var(--blueprint-cell) var(--blueprint-cell);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 40%, transparent 85%);
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 40%, transparent 85%);
}

.hero__content { position: relative; z-index: 1; }
.hero__inner { max-width: 62ch; }
.hero__eyebrow { color: var(--color-accent); margin-bottom: var(--space-3); }
.hero__eyebrow::before { background: var(--color-accent); }
.hero__title {
  font-size: clamp(var(--fs-hero-sm), 6vw + 0.5rem, var(--fs-hero));
  font-weight: var(--fw-extrabold);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}
.hero__subhead {
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: rgba(255, 255, 255, 0.85);
  max-width: var(--measure-hero);
  margin-bottom: var(--space-5);
}
.hero__cta-row { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
@media (max-width: 767px) {
  .hero__cta-row { flex-direction: column; align-items: stretch; }
  .hero__cta-row .btn { width: 100%; }
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.hero__stats .stat__label { color: rgba(255, 255, 255, 0.7); }
.hero__stats li {
  padding-inline-start: var(--space-4);
  border-inline-start: 1px solid rgba(255, 255, 255, 0.16);
}
.hero__stats li:first-child { padding-inline-start: 0; border-inline-start: 0; }
@media (max-width: 767px) {
  .hero__stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3) var(--space-2); }
  .hero__stats li { padding-inline-start: 0; border-inline-start: 0; }
}

/* ==========================================================================
   10. Cards
   ========================================================================== */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition:
    transform var(--dur-base) var(--ease-emphasis),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* Service card */
.service-card { padding: var(--space-4); gap: var(--space-2); }
.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: var(--radius-input);
  background: rgba(28, 111, 214, 0.08);
  color: var(--color-secondary);
  margin-bottom: var(--space-1);
  transition: background-color var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}
.service-card__icon .icon { width: 28px; height: 28px; }
.service-card:hover .service-card__icon { background: var(--color-secondary); color: var(--color-white); }
.service-card__title { font-size: 1.25rem; font-weight: var(--fw-bold); }
.service-card__text { color: var(--color-text-secondary); font-size: var(--fs-small); flex: 1; }
.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-small);
  color: var(--color-secondary);
  margin-top: var(--space-1);
}
.service-card__link .icon { width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease-standard); }
.service-card:hover .service-card__link { color: var(--color-accent); }
.service-card:hover .service-card__link .icon { transform: translateX(3px); }

/* Project / media card */
.project-card { padding: 0; }
.project-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(100% 100% at 100% 0%, rgba(28, 111, 214, 0.18), transparent 60%),
    var(--surface-muted);
  overflow: hidden;
}
.project-card__media img { width: 100%; height: 100%; object-fit: cover; }
.project-card__placeholder {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: rgba(28, 111, 214, 0.35);
}
.project-card__placeholder .icon { width: 48px; height: 48px; }
.project-card__body { padding: var(--space-3) var(--space-4) var(--space-4); display: flex; flex-direction: column; gap: 8px; }
.project-card__title { font-size: 1.125rem; font-weight: var(--fw-bold); }
.project-card__meta { font-size: var(--fs-small); color: var(--color-text-secondary); }

/* Line clamp helper for resilient card copy */
.clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==========================================================================
   11. Trust strip & feature lists
   ========================================================================== */
.trust-strip {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr));
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}
.trust-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-pill);
  background: rgba(62, 169, 53, 0.1);
  color: var(--color-accent);
}
.trust-item__icon .icon { width: 22px; height: 22px; }
.trust-item__title { font-weight: var(--fw-bold); font-size: 0.95rem; }
.trust-item__sub { font-size: var(--fs-small); color: var(--color-text-secondary); }

.feature-list { display: grid; gap: var(--space-3); }
.feature-list__item { display: flex; gap: var(--space-2); }
.feature-list__item .icon { width: 24px; height: 24px; color: var(--color-accent); flex-shrink: 0; }
.feature-list__item h3 { font-size: 1.125rem; margin-bottom: 4px; }
.feature-list__item p { color: var(--color-text-secondary); font-size: var(--fs-small); }
.section--navy .feature-list__item p { color: rgba(255, 255, 255, 0.72); }

/* ==========================================================================
   12. Forms baseline
   ========================================================================== */
label { display: inline-block; font-weight: var(--fw-medium); font-size: var(--fs-small); margin-bottom: 6px; }

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  font-size: var(--fs-body);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-input);
  transition: border-color var(--dur-fast) var(--ease-standard), box-shadow var(--dur-fast) var(--ease-standard);
}
input::placeholder,
textarea::placeholder { color: var(--color-text-secondary); opacity: 0.8; }
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(28, 111, 214, 0.15);
}
textarea { min-height: 140px; resize: vertical; }
select { appearance: none; background-color: var(--color-surface); } /* explicit bg for dark-mode legibility */

.form-field { display: flex; flex-direction: column; margin-bottom: var(--space-3); }

.search-form {
  display: flex;
  gap: var(--space-1);
  max-width: 480px;
}
.search-form input[type="search"] { flex: 1; }

/* ==========================================================================
   13. Footer + pre-footer CTA band
   ========================================================================== */
.cta-band {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-card);
}
.cta-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6);
}
.cta-band__title { font-size: clamp(1.75rem, 3vw + 1rem, 2.5rem); color: var(--color-white); max-width: 22ch; }
.cta-band__text { color: rgba(255, 255, 255, 0.75); margin-top: var(--space-1); max-width: 46ch; }
@media (max-width: 767px) { .cta-band__inner { padding: var(--space-5) var(--space-3); } .cta-band__actions .btn { width: 100%; } }
.cta-band__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.72);
  padding-block: var(--space-7) var(--space-3);
  margin-top: var(--space-7);
}
.site-footer a { color: rgba(255, 255, 255, 0.72); }
.site-footer a:hover { color: var(--color-accent); }

.footer-grid {
  display: grid;
  gap: var(--space-5) var(--space-4);
  grid-template-columns: 1.5fr repeat(3, 1fr);
}
@media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 519px)  { .footer-grid { grid-template-columns: 1fr; } }

.footer-col__title {
  font-size: var(--fs-small);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}
.footer-col ul { display: grid; gap: 12px; }
.footer-brand__logo { --nav-ink: var(--color-white); margin-bottom: var(--space-2); }
.footer-brand__about { max-width: 40ch; font-size: 0.95rem; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .icon { width: 18px; height: 18px; color: var(--color-accent); margin-top: 3px; flex-shrink: 0; }

.footer-social { display: flex; gap: var(--space-1); margin-top: var(--space-3); }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
}
.footer-social a:hover { background: var(--color-accent); color: var(--color-white); }
.footer-social .icon { width: 20px; height: 20px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--fs-small);
}
.footer-legal { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.footer-credit { opacity: 0.75; }
.footer-credit a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.footer-credit a:hover { opacity: 1; color: var(--color-primary); }

/* ==========================================================================
   14. Sticky mobile CTA + WhatsApp FAB
   ========================================================================== */
.mobile-cta-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-mobile-cta);
  display: none;
  gap: var(--space-1);
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.1);
}
.mobile-cta-bar .btn { flex: 1; }
.mobile-cta-bar__phone {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  flex: 0 0 auto;
  border-radius: var(--radius-button);
  border: 1.5px solid var(--color-border);
  color: var(--color-secondary);
  background: var(--color-surface);
}
.mobile-cta-bar__phone .icon { width: 22px; height: 22px; }
@media (max-width: 1023px) { .mobile-cta-bar { display: flex; } }

.whatsapp-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: var(--z-fab);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: var(--radius-pill);
  background: #25D366; /* WhatsApp brand — one approved palette deviation */
  color: var(--color-white);
  box-shadow: var(--shadow-md);
  transition: transform var(--dur-base) var(--ease-emphasis), box-shadow var(--dur-base) var(--ease-standard);
}
.whatsapp-fab .icon { width: 30px; height: 30px; }
.whatsapp-fab:hover { transform: scale(1.06); box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4); color: var(--color-white); }
@media (max-width: 1023px) {
  .whatsapp-fab {
    width: 52px; height: 52px;
    right: 16px;
    bottom: calc(64px + env(safe-area-inset-bottom) + 16px); /* clear the sticky bar */
  }
}

/* ==========================================================================
   15. 404 / empty states
   ========================================================================== */
.error-404 { text-align: center; }
.error-404__code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(4rem, 14vw, 9rem);
  font-weight: var(--fw-bold);
  line-height: 1;
  color: var(--color-secondary);
  letter-spacing: -0.04em;
}
.error-404__quicklinks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-4);
}
.error-404 .search-form { margin-inline: auto; margin-top: var(--space-4); }

.empty-state {
  text-align: center;
  padding: var(--space-7) var(--space-3);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
}
.empty-state__icon { color: var(--color-text-secondary); margin-bottom: var(--space-2); display: inline-flex; }
.empty-state__icon .icon { width: 40px; height: 40px; }

/* Generic post-list cards (index / archive fallback) */
.post-card { padding: var(--space-4); gap: var(--space-2); }
.post-card__title { font-size: 1.25rem; }
.post-card__title a { color: var(--color-text); }
.post-card__title a:hover { color: var(--color-secondary); }
.post-card__meta { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--color-text-secondary); }
.post-card__excerpt { color: var(--color-text-secondary); font-size: 0.95rem; }

/* ==========================================================================
   16. Utilities, focus ring, scroll-reveal
   ========================================================================== */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Global focus ring — 2px accent + offset (UI gate §2) */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}
/* On navy surfaces keep the ring visible with a light offset backdrop */
.section--navy :focus-visible,
.site-footer :focus-visible,
.mobile-drawer :focus-visible,
.hero :focus-visible {
  outline-color: var(--color-accent);
  outline-offset: 3px;
}

.eyebrow--center { justify-content: center; }
.text-center { text-align: center; }
.stack > * + * { margin-top: var(--space-3); }

/* Scroll-reveal — only hides when JS is active, so no-JS shows everything */
html.mhr-js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-slow) var(--ease-emphasis), transform var(--dur-slow) var(--ease-emphasis);
  will-change: opacity, transform;
}
html.mhr-js .reveal.is-visible { opacity: 1; transform: none; }

/* Lock body scroll when the drawer is open */
body.mhr-no-scroll { overflow: hidden; }

/* ==========================================================================
   17. Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  /* Signature is fully static under reduced motion */
  .blueprint-grid,
  .hero__blueprint,
  .blueprint-corners::before,
  .blueprint-corners::after { display: none !important; }

  html.mhr-js .reveal { opacity: 1 !important; transform: none !important; }
  .btn:hover, .card:hover { transform: none !important; }
}