/* ============================================
   MRZ Soudure — Custom Styles
   "Artisan Noble" Design System — V2 WAW
   ============================================ */

/* --- Design Tokens --- */
:root {
  --bg: #FAF6F2;
  --bg-alt: #F0E8E0;
  --dark: #2C2826;
  --brown: #8E7461;
  --tan: #CEAC91;
  --tan-light: #F3E1CB;
  --tan-dark: #7A5E47;
  --white: #FFFFFF;

  --font-heading: 'Barlow Condensed', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --radius: 6px;
  --transition: 200ms ease;
}

/* --- Base --- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--dark);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  color: var(--dark);
}

/* --- Custom Cursor --- */
.cursor-dot {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--tan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  transition: transform 150ms ease, opacity 150ms ease;
  mix-blend-mode: exclusion;
}

.cursor-ring {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 2px solid var(--tan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99998;
  transition: transform 300ms ease, width 300ms ease, height 300ms ease, border-color 300ms ease;
  opacity: 0.5;
}

.cursor-ring.hover {
  width: 56px;
  height: 56px;
  border-color: var(--tan-dark);
  opacity: 0.8;
}

@media (max-width: 768px) {
  .cursor-dot, .cursor-ring { display: none !important; }
}

/* --- Scroll Progress Bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--tan), var(--tan-dark));
  z-index: 10001;
  width: 0%;
  transition: none;
}

/* --- Grain Noise Overlay --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  animation: grain-drift 8s linear infinite;
}

@keyframes grain-drift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-5px, -5px); }
  100% { transform: translate(0, 0); }
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--bg);
  box-shadow: 0 1px 8px rgba(44, 40, 38, 0.08);
  transition: box-shadow 300ms ease;
  height: 64px;
}

.nav-scrolled {
  box-shadow: 0 2px 12px rgba(44, 40, 38, 0.12);
}

.nav-link {
  position: relative;
  color: inherit;
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--tan);
  transition: width 300ms ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--tan-dark);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/hero.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

@media (max-width: 768px) {
  .hero-bg {
    background-attachment: scroll;
  }
}

/* --- Hero clip-path text reveal --- */
.clip-reveal {
  overflow: hidden;
  display: block;
}

.clip-reveal-inner {
  display: block;
  transform: translateY(110%);
  transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

.clip-reveal-inner.visible {
  transform: translateY(0);
}


/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Diagonal reveal for service cards */
.reveal-diagonal {
  opacity: 0;
  transform: translate(-20px, 20px);
  transition: opacity 500ms ease, transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-diagonal.active {
  opacity: 1;
  transform: translate(0, 0);
}

/* --- Split text animation (for section titles) --- */
.split-text .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(30px) rotateX(-40deg);
  transition: opacity 400ms ease, transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.split-text.active .char {
  opacity: 1;
  transform: translateY(0) rotateX(0);
}

/* --- Cards --- */
.card {
  background: var(--white);
  border-left: 3px solid var(--tan);
  border-radius: var(--radius);
  box-shadow: 0 1px 4px rgba(44, 40, 38, 0.06);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card {
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(44, 40, 38, 0.1);
  border-left-color: var(--tan-dark);
}

.card:active {
  transform: translateY(-1px);
}

/* Service card icon hover */
.card .icon-box {
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1), background 300ms ease;
}

.card:hover .icon-box {
  transform: rotateY(180deg);
  background: var(--tan);
  color: var(--white);
}

.card:hover .icon-box svg {
  stroke: var(--white);
}

/* SVG draw animation for engagement icons */
.svg-draw path,
.svg-draw line,
.svg-draw circle,
.svg-draw polyline,
.svg-draw rect,
.svg-draw polygon {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset 800ms ease;
}

.svg-draw.drawn path,
.svg-draw.drawn line,
.svg-draw.drawn circle,
.svg-draw.drawn polyline,
.svg-draw.drawn rect,
.svg-draw.drawn polygon {
  stroke-dashoffset: 0;
}

/* --- Process Timeline (Avant/Après rework) --- */
.process-viewer {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.process-main-img {
  width: 100%;
  max-height: 60vh;
  object-fit: contain;
  display: block;
  border-radius: var(--radius);
  transition: opacity 400ms ease;
}

.process-flash {
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  pointer-events: none;
  z-index: 5;
  border-radius: var(--radius);
}

.process-flash.flash {
  animation: weld-flash 300ms ease-out;
}

@keyframes weld-flash {
  0% { opacity: 0.7; }
  100% { opacity: 0; }
}

.process-steps {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  justify-content: center;
}

.process-step {
  flex: 1;
  max-width: 120px;
  cursor: pointer;
  border-radius: var(--radius);
  overflow: hidden;
  border: 3px solid transparent;
  transition: border-color 300ms ease, transform 200ms ease, opacity 200ms ease;
  opacity: 0.5;
}

.process-step:hover {
  opacity: 0.8;
  transform: translateY(-2px);
}

.process-step.active {
  border-color: var(--tan);
  opacity: 1;
}

.process-step img {
  width: 100%;
  height: 56px;
  object-fit: cover;
  display: block;
}

.process-label {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  text-align: center;
  padding: 4px 2px;
  color: var(--dark);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Progress bar between steps */
.process-progress {
  height: 3px;
  background: var(--bg-alt);
  border-radius: 2px;
  margin-top: 12px;
  overflow: hidden;
}

.process-progress-bar {
  height: 100%;
  background: var(--tan);
  border-radius: 2px;
  transition: width 400ms ease;
}

/* --- Masonry Gallery --- */
.masonry {
  column-count: 3;
  column-gap: 16px;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 16px;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 400ms ease, opacity 400ms ease;
  perspective: 800px;
}

.masonry-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 400ms ease;
}

/* 3D tilt handled by JS — base transition */
.masonry-item .tilt-inner {
  transition: transform 200ms ease;
  transform-style: preserve-3d;
  will-change: transform;
}

.masonry-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(44, 40, 38, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 300ms ease;
}

.masonry-item:hover .masonry-item-overlay {
  background: rgba(44, 40, 38, 0.3);
}

.masonry-item-overlay svg {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 300ms ease, transform 300ms ease;
  color: var(--white);
}

.masonry-item:hover .masonry-item-overlay svg {
  opacity: 1;
  transform: scale(1);
}

.masonry-item.hidden {
  opacity: 0;
  transform: scale(0.9);
  position: absolute;
  visibility: hidden;
}

@media (max-width: 1024px) {
  .masonry { column-count: 2; }
}

@media (max-width: 640px) {
  .masonry { column-count: 1; }
}

/* Filter buttons */
.filter-btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 8px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--tan);
  background: transparent;
  color: var(--dark);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--tan);
  color: var(--white);
}

.filter-btn:active {
  transform: scale(0.95);
}

/* --- Lightbox with zoom-from-thumbnail --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms ease, visibility 300ms ease, background 300ms ease;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
  background: rgba(0, 0, 0, 0.92);
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1), opacity 300ms ease;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 12px;
  z-index: 10001;
  transition: opacity var(--transition), transform var(--transition);
}

.lightbox-close:hover { opacity: 0.7; transform: rotate(90deg); }
.lightbox-prev:hover { opacity: 0.7; transform: translateY(-50%) translateX(-4px); }
.lightbox-next:hover { opacity: 0.7; transform: translateY(-50%) translateX(4px); }

.lightbox-close { top: 20px; right: 20px; font-size: 2rem; }
.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); font-size: 2rem; }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); font-size: 2rem; }

/* --- Carousel Avis — 3D coverflow --- */
.carousel-track {
  display: flex;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.carousel-card {
  flex-shrink: 0;
  padding: 0 8px;
  transition: transform 500ms ease, opacity 500ms ease;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--tan);
  color: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  z-index: 5;
  box-shadow: 0 2px 8px rgba(44, 40, 38, 0.1);
}

.carousel-btn:hover {
  background: var(--tan);
  color: var(--white);
}

.carousel-btn-prev { left: -22px; }
.carousel-btn-next { right: -22px; }

@media (max-width: 768px) {
  .carousel-btn { display: none; }
}

/* --- Wipe Reveal (for About image) --- */
.wipe-reveal {
  position: relative;
  overflow: hidden;
}

.wipe-reveal::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--tan);
  transform: translateX(0);
  transition: transform 800ms cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.wipe-reveal.revealed::after {
  transform: translateX(101%);
}

.wipe-reveal img {
  opacity: 0;
  transition: opacity 100ms ease 300ms;
}

.wipe-reveal.revealed img {
  opacity: 1;
}

/* --- Value tags cascade --- */
.value-tag {
  display: inline-block;
  background: var(--tan-light);
  color: var(--tan-dark);
  border-radius: var(--radius);
  padding: 4px 12px;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 300ms ease, transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.value-tag.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Mobile Menu --- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: var(--bg);
  z-index: 1001;
  transform: translateX(100%);
  transition: transform 300ms ease;
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms ease, visibility 300ms ease;
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* --- CTA Sticky Mobile --- */
.cta-mobile {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  background: var(--bg);
  box-shadow: 0 -2px 12px rgba(44, 40, 38, 0.1);
  transform: translateY(100%);
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.cta-mobile.visible {
  transform: translateY(0);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--tan);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--tan-dark);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.96);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid var(--white);
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--dark);
}

.btn-outline:active {
  transform: scale(0.96);
}

/* Magnetic button */
.btn-magnetic {
  transition: transform 200ms ease;
}

/* Ripple effect */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 600ms ease-out;
  pointer-events: none;
}

@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}

/* --- Image reveal --- */
.image-reveal {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 800ms ease;
}

.image-reveal.active {
  clip-path: inset(0 0 0 0);
}

/* --- Focus visible --- */
*:focus-visible {
  outline: 2px solid var(--tan);
  outline-offset: 2px;
}

/* --- Section spacing --- */
.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  perspective: 600px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--tan-dark);
  font-weight: 500;
  margin-top: 8px;
}

/* --- Counter animation --- */
.counter {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  body {
    cursor: auto;
  }

  .cursor-dot, .cursor-ring {
    display: none !important;
  }

  .reveal, .reveal-diagonal {
    opacity: 1;
    transform: none;
  }

  .clip-reveal-inner {
    transform: none;
  }

  .split-text .char {
    opacity: 1;
    transform: none;
  }

  .hero-bg {
    background-attachment: scroll;
  }

  .image-reveal {
    clip-path: none;
  }

  .wipe-reveal::after {
    display: none;
  }

  .wipe-reveal img {
    opacity: 1;
  }

  .value-tag {
    opacity: 1;
    transform: none;
  }
}

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

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--tan);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--tan-dark);
}