/* =============================================================================
   14. SITE — FOOTER
   Includes the closing CTA statement, brand block, link columns, and legal
   bar as one continuous element so the background gradient reads as a
   single unbroken surface, exactly as approved.
   ============================================================================= */
/* Depends on: tokens.css, base/utilities.css (.grid-split, .container), base/motion.css (reveal-up keyframe). */
.site-footer {
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

/* --- Closing statement ------------------------------------------------------*/
.site-footer__divider-wrap {
  padding-top: clamp(2rem, 4vw, 3rem);
}

.site-footer__divider {
  width: 100%;
  max-width: 480px;
  margin-inline: auto;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent-border) 50%, transparent 100%);
}

.site-footer__closing {
  padding: var(--space-section-y) var(--space-container-x) clamp(3rem, 5vw, 4rem);
  animation: reveal-up 0.8s var(--ease-out-expo) both;
}

.site-footer__closing-grid {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .site-footer__closing-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .site-footer__closing-grid > :first-child {
    grid-column: span 6;
  }

  .site-footer__closing-grid > :last-child {
    grid-column: span 6;
  }
}

.site-footer__closing-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.site-footer__closing-heading {
  font-size: var(--text-heading-xl);
  line-height: var(--lh-heading-loose);
}

.site-footer__closing-lead {
  font-size: var(--text-lead-md);
  line-height: var(--lh-body);
  max-width: 48ch;
}

.site-footer__closing-actions {
  gap: var(--space-5);
  justify-content: center;
  margin-top: var(--space-2);
}

/* --- Closing statement visual --------------------------------------------
   No border, shadow, or radius, matching the hero image treatment: the
   source file carries its own vignette, so an added CSS "card" frame
   would just double-box it. aspect-ratio matches the source file's
   actual 3:2 ratio so nothing gets cropped by object-fit. */
.site-footer__closing-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-footer__closing-image {
  display: block;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 3 / 2;
  object-fit: contain;
}

/* --- Link grid: Unified Cohesive Enterprise Footer ------------------------ */
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2.25rem 2rem;
  margin-block: clamp(2.5rem, 5vw, 4rem);
  border-radius: var(--radius-2xl, 24px);
  background: color-mix(in oklch, var(--color-glass-strong), var(--color-bg-secondary) 30%);
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-footer__brand,
.site-footer__office,
.site-footer__contact {
  font-style: normal;
  min-width: 0;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  box-sizing: border-box;
}

.site-footer__brand {
  max-width: 100%;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.site-footer__brand-desc,
.site-footer__brand p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0.75rem 0 0 0;
}

.site-footer__office p,
.site-footer__address-text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.65;
  word-break: keep-all;
}

.site-footer__inquiry-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0 0 1rem 0;
}

.site-footer__email-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-pill, 999px);
  background: color-mix(in oklch, var(--color-accent-soft), transparent 85%);
  border: 1px solid color-mix(in oklch, var(--color-accent), transparent 70%);
  color: var(--color-accent-strong);
  font-weight: var(--fw-semibold);
  font-size: 0.875rem;
  text-decoration: none;
  width: max-content;
  max-width: 100%;
  transition: all var(--transition-base);
}

.site-footer__email-btn:hover {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px color-mix(in oklch, var(--color-accent), transparent 60%);
}

.site-footer__nav-heading {
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  font-size: 0.98rem;
  color: var(--color-text-primary);
  margin: 0 0 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-footer__contact-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--color-accent-strong);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Bottom bar ---------------------------------------------------------------*/
.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
  padding: var(--space-6) 0 var(--space-8);
  border-top: 1px solid var(--color-border);
}

.site-footer__copyright {
  font-size: var(--text-2xs);
  color: var(--color-text-tertiary);
}

.site-footer__legal {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.site-footer__legal a {
  color: var(--color-text-tertiary);
  text-decoration: none;
  font-size: var(--text-2xs);
  transition: color var(--transition-base);
}

.site-footer__legal a:hover {
  color: var(--color-accent-strong);
}

@media (max-width: 575px) {
  .site-footer__bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-4);
  }
  .site-footer__legal {
    justify-content: center;
    gap: 0.75rem 1.25rem;
  }
}

@media (min-width: 640px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr 1fr 1.05fr;
    gap: 0;
    padding: 2.25rem 1.75rem;
  }

  .site-footer__brand {
    padding-right: 1.5rem;
    border-right: 1px solid color-mix(in oklch, var(--color-border), transparent 35%);
  }

  .site-footer__office:nth-of-type(1) {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    border-right: 1px solid color-mix(in oklch, var(--color-border), transparent 35%);
  }

  .site-footer__office:nth-of-type(2) {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    border-right: 1px solid color-mix(in oklch, var(--color-border), transparent 35%);
  }

  .site-footer__contact {
    padding-left: 1.5rem;
  }
}

/* Dark footer: a separate but quiet navy surface with readable type and
   token-driven decorative marks. Existing responsive columns remain intact. */
:root[data-theme="dark"] .site-footer {
  background:
    radial-gradient(ellipse 62% 54% at 50% 0%, oklch(56% 0.17 292 / 0.09), transparent 70%),
    linear-gradient(180deg, oklch(14% 0.029 264), oklch(10% 0.024 264));
  border-top: 1px solid color-mix(in oklch, var(--color-glow), transparent 82%);
}

:root[data-theme="dark"] .site-footer::before {
  background: radial-gradient(circle, oklch(60% 0.18 292 / 0.12), transparent 68%);
}

:root[data-theme="dark"] .site-footer__divider,
:root[data-theme="dark"] .site-footer hr,
:root[data-theme="dark"] .site-footer__bottom {
  border-color: color-mix(in oklch, var(--color-glow), transparent 80%);
}

:root[data-theme="dark"] .site-footer__divider {
  background: linear-gradient(90deg, transparent, color-mix(in oklch, var(--color-glow), var(--color-accent) 42%), transparent);
}

:root[data-theme="dark"] .site-footer__closing-heading,
:root[data-theme="dark"] .site-footer__nav-heading,
:root[data-theme="dark"] .site-footer__logo {
  color: var(--color-text-primary);
}

:root[data-theme="dark"] .site-footer__closing-lead,
:root[data-theme="dark"] .site-footer__brand p,
:root[data-theme="dark"] .site-footer__tagline,
:root[data-theme="dark"] .site-footer__office p,
:root[data-theme="dark"] .site-footer__copyright {
  color: var(--color-text-secondary);
}

:root[data-theme="dark"] .site-footer__nav-list a,
:root[data-theme="dark"] .site-footer__contact a,
:root[data-theme="dark"] .site-footer__legal a {
  color: var(--color-text-secondary);
}

:root[data-theme="dark"] .site-footer__nav-list a:hover,
:root[data-theme="dark"] .site-footer__contact a:hover,
:root[data-theme="dark"] .site-footer__legal a:hover {
  color: var(--color-glow);
}

:root[data-theme="dark"] .site-footer__nav-list a:focus-visible,
:root[data-theme="dark"] .site-footer__legal a:focus-visible,
:root[data-theme="dark"] .site-footer__logo:focus-visible {
  outline: 2px solid var(--color-glow);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* Footer navigation and brand layer: deliberately excludes the closing
   showcase above so its established composition remains untouched. */
.site-footer__grid {
  position: relative;
  isolation: isolate;
  gap: clamp(2rem, 3vw, 3.25rem) clamp(1.5rem, 3vw, 3.25rem);
  padding-block: clamp(2.75rem, 4.5vw, 4rem);
}

.site-footer__grid > * {
  position: relative;
  z-index: 1;
}

.site-footer__grid::before {
  content: '';
  position: absolute;
  z-index: 0;
  inset: 8% 0;
  pointer-events: none;
  opacity: .42;
  background:
    radial-gradient(ellipse 30% 50% at 4% 30%, color-mix(in oklch, var(--color-accent-soft), transparent 52%), transparent 76%),
    linear-gradient(90deg, color-mix(in oklch, var(--color-border), transparent 76%) 1px, transparent 1px),
    linear-gradient(color-mix(in oklch, var(--color-border), transparent 82%) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  mask-image: linear-gradient(90deg, black, transparent 74%);
}

.site-footer__brand {
  gap: 1.05rem;
  max-width: 22rem;
}

.site-footer__logo {
  width: fit-content;
  transition: color var(--transition-base), transform var(--transition-base);
}

.site-footer__logo:hover { transform: translateY(-1px); }

.site-footer__brand p {
  line-height: var(--lh-body-sm);
}

.site-footer__nav-list {
  gap: clamp(.75rem, 1.35vw, 1rem);
}

.site-footer__nav-list a,
.site-footer__legal a {
  text-underline-offset: .28em;
}

.site-footer__nav-list a:focus-visible,
.site-footer__contact a:focus-visible,
.site-footer__legal a:focus-visible {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.site-footer__bottom {
  position: relative;
  padding-block: clamp(1.35rem, 2.5vw, 2rem) clamp(1.75rem, 3.25vw, 2.75rem);
}

.site-footer__legal a {
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: color var(--transition-base), background-size var(--transition-slow);
}

.site-footer__legal a:hover { background-size: 100% 1px; }

@media (max-width: 699px) {
  .site-footer__grid { gap: 2.25rem; }
  .site-footer__bottom { align-items: flex-start; }
}

:root[data-theme="dark"] .site-footer__grid::before {
  opacity: .3;
}

/* Closing showcase: a 5/7, art-led transition into the contact area. */
.site-footer__closing {
  padding-block: clamp(4.75rem, 7.5vw, 7.75rem) clamp(3.5rem, 5vw, 4.75rem);
}

.site-footer__closing-grid {
  align-items: center;
}

@media (min-width: 900px) {
  .site-footer__closing-grid > :first-child { grid-column: span 5; }
  .site-footer__closing-grid > :last-child { grid-column: span 7; }

  .site-footer__closing-content {
    align-items: flex-start;
    max-width: 33rem;
    text-align: left;
  }

  .site-footer__closing-actions { justify-content: flex-start; }

  .site-footer__closing-visual {
    justify-self: start;
    transform: translateX(-3%);
  }
}

.site-footer__closing-content {
  gap: clamp(1.15rem, 2vw, 1.6rem);
}

.site-footer__closing-lead { max-width: 45ch; }

.site-footer__closing-actions {
  margin-top: clamp(0.75rem, 1.6vw, 1.1rem);
  gap: clamp(0.85rem, 1.8vw, 1.25rem);
}

.site-footer__closing-visual {
  --closing-art-width: 95%;
  position: relative;
  isolation: isolate;
  display: grid;
  width: 100%;
  min-height: clamp(450px, 48vw, 620px);
  place-items: center;
}

.site-footer__closing-visual > img,
.site-footer__closing-visual > svg {
  position: relative;
  z-index: 1;
  width: var(--closing-art-width);
  max-width: 820px;
  height: auto;
}

.site-footer__intelligence-art {
  width: min(100%, 860px);
  max-width: none;
  overflow: visible;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.25));
}

@media (min-width: 900px) {
  .site-footer__intelligence-art {
    width: min(130%, 920px);
    transform: translateX(-15%);
  }
}

/* Ambient Radial Glow behind artwork */
.cta-ai__ambient-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 85%;
  height: 85%;
  background: radial-gradient(
    circle, 
    color-mix(in oklch, var(--color-accent), transparent 70%) 0%, 
    color-mix(in oklch, var(--color-glow), transparent 85%) 50%, 
    transparent 78%
  );
  filter: blur(55px);
  pointer-events: none;
  z-index: 0;
}

/* Transform Box & Origins */
.site-footer__intelligence-art .cta-ai__core-system,
.site-footer__intelligence-art .cta-ai__card,
.site-footer__intelligence-art .cta-ai__connectors,
.site-footer__intelligence-art .cta-ai__radar-rings {
  transform-box: fill-box;
  transform-origin: center;
}

/* Core System Animations */
.site-footer__intelligence-art .cta-ai__core-system {
  animation: cta-ai-core-float 8s ease-in-out infinite alternate;
}

.site-footer__intelligence-art .cta-ai__core-aura {
  transform-box: fill-box;
  transform-origin: center;
  animation: cta-ai-core-breathe 6s ease-in-out infinite alternate;
}

.site-footer__intelligence-art .cta-ai__orbit-spin--cw {
  transform-box: fill-box;
  transform-origin: center;
  animation: ctaOrbitCw 22s linear infinite;
}

.site-footer__intelligence-art .cta-ai__orbit-spin--ccw {
  transform-box: fill-box;
  transform-origin: center;
  animation: ctaOrbitCcw 16s linear infinite;
}

.site-footer__intelligence-art .cta-ai__core-pulse {
  animation: ctaCorePulse 3.5s ease-in-out infinite;
}

/* Connectors & Energy Flow */
.site-footer__intelligence-art .cta-ai__connectors { animation: cta-ai-connector-glow 6s ease-in-out infinite alternate; }
.site-footer__intelligence-art .cta-ai__connector { stroke-width: 2.4; stroke-dasharray: 6 10; animation: cta-ai-connector-flow 10s linear infinite; }

/* Radar Rings */
.site-footer__intelligence-art .cta-ai__radar-ring {
  transform-box: fill-box;
  transform-origin: center;
  animation: ctaRadarExpand 7s ease-in-out infinite;
}
.site-footer__intelligence-art .cta-ai__radar-ring--2 { animation-delay: -2.3s; }
.site-footer__intelligence-art .cta-ai__radar-ring--3 { animation-delay: -4.6s; }

/* Floating Telemetry Glass Cards */
.site-footer__intelligence-art .cta-ai__card--forecast { animation: cta-ai-card-float 8.5s ease-in-out infinite alternate; }
.site-footer__intelligence-art .cta-ai__card--automation { animation: cta-ai-card-float 9.5s ease-in-out -2.5s infinite alternate; }
.site-footer__intelligence-art .cta-ai__card--compliance { animation: cta-ai-card-float 9s ease-in-out -4.5s infinite alternate; }
.site-footer__intelligence-art .cta-ai__card--decisions { animation: cta-ai-card-float 10.5s ease-in-out -1.5s infinite alternate; }
.site-footer__intelligence-art .cta-ai__card--output { animation: cta-ai-card-float 10s ease-in-out -5.5s infinite alternate; }
.site-footer__intelligence-art .cta-ai__card--infra { animation: cta-ai-card-float 9.2s ease-in-out -3.5s infinite alternate; }

/* Keyframe Definitions */
@keyframes ctaOrbitCw {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes ctaOrbitCcw {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

@keyframes ctaCorePulse {
  0%, 100% { r: 26px; fill-opacity: 0.28; }
  50% { r: 34px; fill-opacity: 0.55; }
}

@keyframes ctaRadarExpand {
  0%, 100% { stroke-opacity: 0.25; transform: scale(0.97); }
  50% { stroke-opacity: 0.08; transform: scale(1.03); }
}

@keyframes cta-ai-core-float {
  from { transform: translate3d(0, -6px, 0) scale(1.03); }
  to { transform: translate3d(0, 6px, 0) scale(1.07); }
}

@keyframes cta-ai-core-breathe {
  from { transform: scale(0.94); opacity: 0.72; }
  to { transform: scale(1.06); opacity: 1; }
}

@keyframes cta-ai-connector-glow {
  from { opacity: .6; }
  to { opacity: 1; }
}

@keyframes cta-ai-connector-flow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -64; }
}

@keyframes cta-ai-card-float {
  from { transform: translate3d(0, -5px, 0); }
  to { transform: translate3d(0, 5px, 0); }
}

.site-footer__closing-visual::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 8% -12% 6% -14%;
  pointer-events: none;
  opacity: 0.75;
  background:
    radial-gradient(ellipse 65% 52% at 37% 50%, color-mix(in oklch, var(--color-accent-soft), transparent 42%), transparent 76%),
    radial-gradient(ellipse 48% 42% at 80% 40%, color-mix(in oklch, var(--color-glow-soft), transparent 64%), transparent 78%);
  filter: blur(24px);
  animation: closing-atmosphere-drift 14s ease-in-out infinite alternate;
}

.site-footer__closing-visual::after {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 9% 0;
  pointer-events: none;
  opacity: 0.45;
  background:
    radial-gradient(circle at 13% 34%, var(--color-accent-border) 0 1px, transparent 1.75px),
    radial-gradient(circle at 72% 20%, var(--color-glow-border) 0 1px, transparent 1.75px),
    radial-gradient(circle at 86% 68%, var(--color-accent-border) 0 1px, transparent 1.75px),
    radial-gradient(circle at 38% 82%, var(--color-glow-border) 0 1px, transparent 1.75px);
  animation: closing-particle-drift 18s ease-in-out infinite alternate;
}

@keyframes closing-atmosphere-drift {
  from { transform: translate3d(-1.5%, -1.5%, 0) scale(0.97); opacity: 0.6; }
  to { transform: translate3d(1.5%, 1.5%, 0) scale(1.03); opacity: 0.8; }
}

@keyframes closing-particle-drift {
  from { transform: translate3d(-4px, 3px, 0); opacity: 0.35; }
  to { transform: translate3d(4px, -3px, 0); opacity: 0.52; }
}

@media (max-width: 899px) {
  .site-footer__closing {
    padding-block: clamp(4.25rem, 9vw, 5.75rem) clamp(3.5rem, 7vw, 4.75rem);
  }

  .site-footer__closing-visual {
    width: min(100%, 650px);
    min-height: clamp(280px, 60vw, 420px);
    margin: clamp(1rem, 4vw, 1.75rem) auto 0;
  }

  .site-footer__intelligence-art {
    width: min(100%, 720px);
    transform: none;
  }
}

@media (max-width: 520px) {
  .site-footer__closing { padding-inline: clamp(1rem, 4vw, 1.5rem); }
  .site-footer__closing-visual {
    --closing-art-width: 100%;
    min-height: clamp(280px, 72vw, 360px);
  }

  .site-footer__closing-visual::before {
    filter: blur(16px);
    opacity: 0.55;
  }

  .site-footer__closing-visual::after { opacity: 0.3; }

  .site-footer__intelligence-art {
    width: 100%;
    height: auto;
    overflow: visible;
  }

  /* Keep all cards and components 100% visible across mobile screens */
  .site-footer__intelligence-art .cta-ai__card {
    display: block !important;
    opacity: 0.95;
  }
}

:root[data-theme="dark"] .site-footer__closing-visual::before { opacity: 0.58; }
:root[data-theme="dark"] .site-footer__closing-visual::after { opacity: 0.34; }