/* ==========================================================================
   Elevate Builders — Architectural Motion & Animation Engine
   Designed for Monolithic Stability, Precision & Editorial Elegance
   ========================================================================== */

/* 1. Global Viewport Hardening, Scroll Behavior & Hairline Progress Bar */
html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  width: 100%;
  margin: 0;
  padding: 0;
  -webkit-overflow-scrolling: touch;
}

/* Architectural Subtle Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #FAF9F5;
}

::-webkit-scrollbar-thumb {
  background: #C8C5D0;
  border-radius: 0px;
}

::-webkit-scrollbar-thumb:hover {
  background: #6C5C3E;
}

#scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #080237 0%, #6C5C3E 50%, #B8A582 100%);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 100;
  pointer-events: none;
  transition: transform 0.08s linear;
}

/* 2. Header Nav Link & Button Change Animations */
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 6px 2px 8px 2px;
  letter-spacing: 0.06em;
  transition: color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #6C5C3E; /* Desert Sand */
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease;
}

.nav-link:hover {
  color: #080237 !important;
  transform: translateY(-1px);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link.active-link {
  color: #080237 !important;
}

.nav-link.active-link::after {
  transform: scaleX(1);
  background: #080237; /* Monolith Navy */
}

/* Header CTA Button Kinetics with Shimmer Sweep */
.header-cta-btn {
  position: relative;
  overflow: hidden;
  letter-spacing: 0.08em;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.25s ease,
              border-color 0.25s ease,
              box-shadow 0.3s ease;
}

.header-cta-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -130%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    115deg,
    transparent 0%,
    rgba(255, 255, 255, 0.22) 50%,
    transparent 100%
  );
  transform: skewX(-20deg);
  transition: left 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.header-cta-btn:hover::before {
  left: 140%;
}

.header-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(8, 2, 55, 0.16);
}

.header-cta-btn:active {
  transform: translateY(1px) scale(0.98);
}

/* 3. Mobile Header Navigation Button Animation & Drawer Interaction */
#mobile-menu-btn {
  position: relative;
  width: 42px;
  height: 42px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background-color: transparent;
  border: 1px solid #E4E2DC;
  cursor: pointer;
  outline: none;
  transition: background-color 0.2s ease,
              border-color 0.25s ease,
              transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

#mobile-menu-btn:hover {
  background-color: #F5F4F0;
  border-color: #6C5C3E;
}

#mobile-menu-btn:active {
  transform: scale(0.92);
}

#mobile-menu-btn .nav-icon-bar {
  display: block;
  width: 20px;
  height: 1.75px;
  background-color: #1F1B4D;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.22s ease,
              background-color 0.25s ease;
  transform-origin: center;
  border-radius: 1px;
}

#mobile-menu-btn.is-active {
  border-color: #6C5C3E;
  background-color: #F5F4F0;
}

#mobile-menu-btn.is-active .nav-icon-bar:nth-child(1) {
  transform: translateY(6.75px) rotate(45deg);
  background-color: #6C5C3E;
}

#mobile-menu-btn.is-active .nav-icon-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

#mobile-menu-btn.is-active .nav-icon-bar:nth-child(3) {
  transform: translateY(-6.75px) rotate(-45deg);
  background-color: #6C5C3E;
}

/* Mobile Menu Drawer Kinetic Expansion with Bulletproof Fallback */
@keyframes mobileMenuSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#mobile-menu.hidden {
  display: none !important;
}

#mobile-menu:not(.hidden) {
  display: flex !important;
  animation: mobileMenuSlideDown 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 4. "What We Do" Editorial Rows Seamless Reveal & Hover */
.what-we-do-row {
  position: relative;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              padding-left 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.what-we-do-row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #6C5C3E, #B8A582);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.what-we-do-row:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

.what-we-do-row:hover {
  transform: translateX(8px);
  background-color: #F5F4F0 !important;
}

.what-we-do-row .row-number {
  transition: color 0.3s ease, transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-block;
}

.what-we-do-row:hover .row-number {
  color: #6C5C3E !important;
  transform: scale(1.15) translateX(2px);
}

.what-we-do-row .row-arrow {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.3s ease;
  display: inline-flex;
}

.what-we-do-row:hover .row-arrow {
  transform: translateX(6px);
  color: #6C5C3E;
}

/* 5. Scroll Reveal Transitions (GPU Accelerated) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger Delays for Grid Cards & Spec Strips */
.stagger-1 { transition-delay: 80ms; }
.stagger-2 { transition-delay: 160ms; }
.stagger-3 { transition-delay: 240ms; }
.stagger-4 { transition-delay: 320ms; }
.stagger-5 { transition-delay: 400ms; }
.stagger-6 { transition-delay: 480ms; }

/* 6. Architectural Card & Plate Micro-Interactions */
.architectural-card {
  transition: border-color 0.35s ease,
              background-color 0.3s ease,
              transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.architectural-card:hover {
  border-color: #6C5C3E; /* Desert Sand hairline highlight */
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(8, 2, 55, 0.05);
}

.image-plate {
  overflow: hidden;
  position: relative;
}

.image-plate img {
  transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.6s ease;
  will-change: transform;
}

.image-plate:hover img,
.group:hover .image-plate img {
  transform: scale(1.04);
}

/* 7. Back-to-Top Floating Navigation Action */
#back-to-top-btn {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 2.75rem;
  height: 2.75rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(250, 249, 245, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid #E4E2DC;
  color: #080237;
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.2s ease,
              color 0.2s ease,
              border-color 0.2s ease;
}

#back-to-top-btn.is-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#back-to-top-btn:hover {
  background-color: #080237;
  color: #FAF9F5;
  border-color: #080237;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(8, 2, 55, 0.18);
}

/* 8. Infinite Client Logo Marquee / Slideshow (Zero Mobile Overflow) */
@keyframes marquee-scroll {
  0% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(-50%);
  }
}

@keyframes marquee-scroll-reverse {
  0% {
    transform: translateX(-50%);
  }
  100% {
    transform: translateX(0%);
  }
}

.marquee-container {
  overflow: hidden !important;
  position: relative;
  width: 100%;
  max-width: 100%;
  display: flex;
  user-select: none;
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 4.5rem;
  width: max-content;
  animation: marquee-scroll 28s linear infinite;
  will-change: transform;
}

.marquee-track-reverse {
  display: flex;
  align-items: center;
  gap: 4.5rem;
  width: max-content;
  animation: marquee-scroll-reverse 26s linear infinite;
  will-change: transform;
}

.marquee-container:hover .marquee-track,
.marquee-mask:hover .marquee-track,
.marquee-container:hover .marquee-track-reverse,
.marquee-mask:hover .marquee-track-reverse {
  animation-play-state: paused;
}

.client-logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 5.5rem;
  padding: 0.5rem 1.25rem;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  filter: grayscale(100%) contrast(108%);
  opacity: 0.7;
}

.client-logo-item:hover {
  filter: grayscale(0%) contrast(100%);
  opacity: 1;
  transform: scale(1.08);
}

.marquee-mask {
  overflow: hidden !important;
  max-width: 100% !important;
  width: 100%;
  mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
}

/* 9. Project Card Carousel Scroll-Snap & Scrollbar Reset */
.carousel-track {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.carousel-track::-webkit-scrollbar {
  display: none !important;
}

/* 10. Reduced Motion Compatibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .what-we-do-row {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .image-plate img {
    transition: none !important;
  }
  #scroll-progress-bar,
  #back-to-top-btn {
    display: none;
  }
}