/* ═══════════════════════════════════════════════════════
   ATELIER SEQUENCE — style.css
   Palette : noir / blanc / gris · Accent : gris ardoise #5C6878
   Typo : Syne (display) + DM Mono (labels)
═══════════════════════════════════════════════════════ */

/* ── CUSTOM PROPERTIES ──────────────────────────────── */
:root {
  /* Colors */
  --c-bg: #f8f8f6;
  --c-bg-alt: #f0efec;
  --c-surface: #ffffff;
  --c-border: #d8d6d0;
  --c-border-light: #e8e6e0;
  --c-text: #1a1918;
  --c-text-muted: #6b6860;
  --c-text-faint: #a0998e;
  --c-accent: #5C6878;
  --c-accent-light: rgba(92, 104, 120, 0.1);
  --c-accent-mid: rgba(92, 104, 120, 0.25);

  /* Typography */
  --f-display: 'Syne', sans-serif;
  --f-mono: 'DM Mono', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  /* Layout */
  --max-width: 1280px;
  --nav-height: 72px;
  --section-pad: 5.5rem;

  /* Transitions */
  --t-fast: 150ms ease;
  --t-mid: 300ms ease;
  --t-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark mode */
[data-theme="dark"] {
  --c-bg: #111110;
  --c-bg-alt: #1a1918;
  --c-surface: #1f1e1c;
  --c-border: #2e2c28;
  --c-border-light: #242220;
  --c-text: #f0efec;
  --c-text-muted: #9a9690;
  --c-text-faint: #5e5c56;
  --c-accent: #8a99aa;
  --c-accent-light: rgba(138, 153, 170, 0.1);
  --c-accent-mid: rgba(138, 153, 170, 0.2);
}

/* ── RESET & BASE ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--f-display);
  background-color: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--t-mid), color var(--t-mid);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; background: none; border: none; }
ul { list-style: none; }

/* 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; }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── UTILITIES ──────────────────────────────────────── */
.mono { font-family: var(--f-mono); font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; }
.section-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-md); }

/* ── HEADER / NAVIGATION ────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--c-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-mid), background var(--t-mid), backdrop-filter var(--t-mid);
}

.site-header.scrolled {
  border-color: var(--c-border-light);
  backdrop-filter: blur(12px);
  background: rgba(248,248,246, 0.92);
}

[data-theme="dark"] .site-header.scrolled {
  background: rgba(17,17,16, 0.92);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* Logo */
.nav-logo { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
.logo-img {
  display: block;
  width: auto;
  height: 44px;
  max-width: min(36vw, 150px);
}
.logo-fallback {
  display: none;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  line-height: 1.2;
  text-transform: uppercase;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-link {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  padding: 0.5rem 0.85rem;
  position: relative;
  transition: color var(--t-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0.85rem; right: 0.85rem;
  height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid);
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.nav-cta {
  border: 1px solid var(--c-border);
  color: var(--c-text);
  padding: 0.45rem 1rem;
  transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}

.nav-link.nav-cta::after { display: none; }

.nav-link.nav-cta:hover {
  background: var(--c-text);
  color: var(--c-bg);
  border-color: var(--c-text);
}

/* Burger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  transition: gap var(--t-mid);
}

.burger-line {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--c-text);
  transition: transform var(--t-mid), opacity var(--t-fast);
}

.nav-burger[aria-expanded="true"] .burger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-burger[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}
.nav-burger[aria-expanded="true"] .burger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-md);
  z-index: 99;
  animation: slideDown var(--t-mid) forwards;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.mobile-nav-links { display: flex; flex-direction: column; gap: 0; }
.mobile-nav-link {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  padding: 1rem 0;
  border-bottom: 1px solid var(--c-border-light);
  display: block;
  transition: color var(--t-fast), padding-left var(--t-fast);
}
.mobile-nav-link:hover { color: var(--c-text); padding-left: 0.5rem; }

/* ── SECTION HEADER ─────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.section-index {
  color: var(--c-text-faint);
  font-size: 0.7rem;
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.section-rule {
  flex: 1;
  height: 1px;
  background: var(--c-border);
  margin-left: 0.5rem;
}

/* ── GENERAL SECTION ────────────────────────────────── */
.section {
  padding: var(--section-pad) 0;
}

/* ═══════════════════════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════════════════════ */
.hero {
  min-height: 88vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Grille de fond */
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.grid-lines-h,
.grid-lines-v {
  position: absolute;
  inset: 0;
}

.grid-lines-h {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent calc(12.5vh - 1px),
    var(--c-border-light) calc(12.5vh - 1px),
    var(--c-border-light) 12.5vh
  );
  opacity: 0.5;
}

.grid-lines-v {
  background-image: repeating-linear-gradient(
    to right,
    transparent,
    transparent calc(12.5vw - 1px),
    var(--c-border-light) calc(12.5vw - 1px),
    var(--c-border-light) 12.5vw
  );
  opacity: 0.3;
  animation: gridDrift 20s ease-in-out infinite alternate;
}

@keyframes gridDrift {
  from { transform: translateX(0); }
  to   { transform: translateX(8px); }
}

/* Croix de calibration */
.grid-cross {
  position: absolute;
  width: 20px;
  height: 20px;
}

.grid-cross::before,
.grid-cross::after {
  content: '';
  position: absolute;
  background: var(--c-accent);
  opacity: 0.4;
}

.grid-cross::before { width: 1px; height: 100%; left: 50%; top: 0; }
.grid-cross::after  { width: 100%; height: 1px; top: 50%; left: 0; }

.grid-cross--tl { top: 15%; left: 10%; }
.grid-cross--br { bottom: 20%; right: 8%; }
.grid-cross--tr { top: 25%; right: 52%; }

/* Hero content */
.hero-content {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-md) var(--space-xl) max(var(--space-md), calc((100vw - var(--max-width)) / 2 + var(--space-md)));
  padding-top: 0px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Logo SVG animé */
.hero-logo-anim {
  overflow: hidden;
}

.hero-logo-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  display: block;
}

[data-theme="dark"] .logo-img,
[data-theme="dark"] .hero-logo-img {
  filter: invert(1);
}

.draw-text {
  fill: var(--c-text);
  opacity: 0;
  animation: textReveal 1s 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes textReveal {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.draw-line {
  stroke: var(--c-accent);
  stroke-width: 1;
  opacity: 0;
  animation: lineReveal 0.6s ease forwards;
}

.draw-line--1 { animation-delay: 0.8s; }
.draw-line--2 { animation-delay: 1s; }
.draw-line--3 { animation-delay: 1.1s; }

@keyframes lineReveal {
  from { opacity: 0; stroke-dashoffset: 100; }
  to   { opacity: 1; stroke-dashoffset: 0; }
}

/* Label */
.hero-label {
  opacity: 0;
  animation: fadeUp 0.6s 0.5s ease forwards;
}

.label-mono {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent);
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--c-accent);
  display: inline-block;
}

/* Headline */
.hero-headline {
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  opacity: 0;
  animation: fadeUp 0.7s 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.headline-accent {
  color: var(--c-accent);
}

/* Baseline */
.hero-baseline {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--c-text-muted);
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.6s 0.9s ease forwards;
}

.baseline-sub {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--c-text-faint);
}

/* CTAs */
.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s 1.1s ease forwards;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── BUTTONS ────────────────────────────────────────── */
.btn {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.85rem 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--t-mid);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-text);
  color: var(--c-bg);
}

.btn--primary:hover {
  background: var(--c-accent);
}

.btn--outline {
  border: 1px solid var(--c-border);
  color: var(--c-text);
}

.btn--outline:hover {
  border-color: var(--c-text);
  background: var(--c-accent-light);
}

/* Hero slider */
.hero-slider {
  position: relative;
  height: 88vh;
  overflow: hidden;
  background: var(--c-bg-alt);
  z-index: 1;
}

.slider-track {
  display: flex;
  height: 100%;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide {
  flex: 0 0 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) brightness(0.9);
  transition: filter var(--t-slow);
}

.slide:hover img { filter: grayscale(0%) brightness(1); }

.slide-caption {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.caption-mono {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255, 0.7);
}

.caption-type {
  font-size: 0.85rem;
  color: rgba(255,255,255, 0.9);
  font-weight: 500;
}

/* Dots slider */
.slider-dots {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  gap: 0.6rem;
  z-index: 2;
}

.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255, 0.4);
  transition: all var(--t-mid);
  padding: 0;
}

.dot--active, .dot:hover {
  background: #fff;
  transform: scale(1.3);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: max(var(--space-md), calc((100vw - var(--max-width)) / 2 + var(--space-md)));
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1s 1.5s ease forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.scroll-line {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--c-text-faint);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--c-accent);
  animation: scrollPulse 2s 1.8s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%   { left: -100%; }
  50%  { left: 0%; }
  100% { left: 100%; }
}

.scroll-mono {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-text-faint);
}

/* ═══════════════════════════════════════════════════════
   ATELIER SECTION
═══════════════════════════════════════════════════════ */
.atelier-section { background: var(--c-surface); }

.atelier-grid {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 320px;
  gap: var(--space-lg);
  align-items: start;
}

/* Portrait */
.atelier-portrait-col { display: flex; flex-direction: column; gap: var(--space-md); }

.portrait-frame {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--c-bg-alt);
  overflow: hidden;
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(15%);
}

.portrait-frame.portrait-placeholder .portrait-img { display: none; }

/* Coins de cadre style plan */
.frame-corner {
  position: absolute;
  width: 20px; height: 20px;
  z-index: 1;
}

.frame-corner::before,
.frame-corner::after {
  content: '';
  position: absolute;
  background: var(--c-accent);
}

.frame-corner--tl { top: -1px; left: -1px; }
.frame-corner--tl::before { width: 100%; height: 1px; top: 0; left: 0; }
.frame-corner--tl::after  { width: 1px; height: 100%; top: 0; left: 0; }

.frame-corner--br { bottom: -1px; right: -1px; }
.frame-corner--br::before { width: 100%; height: 1px; bottom: 0; right: 0; }
.frame-corner--br::after  { width: 1px; height: 100%; bottom: 0; right: 0; }

/* LinkedIn */
.linkedin-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  transition: color var(--t-fast);
}

.linkedin-link:hover { color: var(--c-accent); }
.linkedin-icon { width: 16px; height: 16px; }

/* Texte atelier */
.atelier-text-col { display: flex; flex-direction: column; gap: var(--space-md); }

.atelier-intro {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--c-text);
}

.atelier-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-text-muted);
}

/* Valeurs */
.atelier-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  border-top: 1px solid var(--c-border-light);
  padding-top: var(--space-md);
}

.value-item { display: flex; flex-direction: column; gap: 0.5rem; }
.value-label { color: var(--c-accent); }
.value-text { font-size: 0.85rem; color: var(--c-text-muted); line-height: 1.6; }

/* Tags */
.atelier-typologies { display: flex; flex-direction: column; gap: 0.75rem; }
.typo-label { color: var(--c-text-faint); }

.typo-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--c-border);
  color: var(--c-text-muted);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.tag:hover { border-color: var(--c-accent); color: var(--c-accent); }

/* Géographie */
.atelier-geo-col { display: flex; flex-direction: column; gap: var(--space-sm); }
.geo-label { color: var(--c-text-faint); display: block; margin-bottom: 0.5rem; }

.france-map {
  width: 100%;
  max-width: 320px;
  color: var(--c-accent);
}

.map-contour { stroke-dasharray: 600; stroke-dashoffset: 600; }
.reveal-map .map-contour { animation: drawMap 2s ease forwards; }

@keyframes drawMap {
  to { stroke-dashoffset: 0; }
}

.geo-zones { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.5rem; }
.geo-tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-faint);
  padding-left: 0.8rem;
  border-left: 2px solid var(--c-border);
}

.geo-tag--main { border-color: var(--c-accent); color: var(--c-text-muted); }

/* ═══════════════════════════════════════════════════════
   COMPETENCES SECTION
═══════════════════════════════════════════════════════ */
.competences-section { background: var(--c-bg); }

.missions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.mission-card {
  background: var(--c-surface);
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: background var(--t-mid);
  position: relative;
  overflow: hidden;
}

.mission-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: var(--c-accent);
  transition: width var(--t-slow);
}

.mission-card:hover::before { width: 100%; }
.mission-card:hover { background: var(--c-bg-alt); }

/* Mission icon */
.mission-icon-wrap {
  width: 64px; height: 64px;
  color: var(--c-accent);
}

.mission-icon { width: 100%; height: 100%; }

/* Animate icon paths on hover */
.icon-path {
  stroke-dasharray: 300;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.6s ease;
}

.mission-card:hover .icon-path {
  stroke-dashoffset: 300;
  animation: redraw 0.8s 0.1s ease forwards;
}

.icon-check { transition: opacity var(--t-mid); }
.mission-card:hover .icon-check { opacity: 0; animation: checkAppear 0.4s 0.7s ease forwards; }

@keyframes redraw {
  from { stroke-dashoffset: 300; }
  to   { stroke-dashoffset: 0; }
}

@keyframes checkAppear {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.mission-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mission-description {
  font-size: 0.9rem;
  color: var(--c-text-muted);
  line-height: 1.75;
}

.mission-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-top: 1px solid var(--c-border-light);
  padding-top: var(--space-sm);
}

.mission-list li {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  padding-left: 1rem;
  position: relative;
}

.mission-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--c-accent);
}

/* Méthode étapes */
.method-section { padding-top: var(--space-lg); }

.method-title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--c-text-faint);
  margin-bottom: var(--space-md);
  display: block;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: var(--space-md);
  position: relative;
  border-top: 1px solid var(--c-border);
}

.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: -1px; right: 0;
  width: 8px; height: 8px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  transform: translateX(50%) translateY(-50%) rotate(45deg);
  z-index: 1;
}

.step-number {
  font-size: 2rem;
  font-weight: 300;
  color: var(--c-border);
  line-height: 1;
  transition: color var(--t-mid);
}

.step:hover .step-number { color: var(--c-accent); }

.step-name {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0;
  display: block;
  margin-bottom: 0.25rem;
}

.step-desc {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════
   PROJETS SECTION
═══════════════════════════════════════════════════════ */
.projets-section { background: var(--c-bg-alt); }

.projets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Project card */
.project-card {
  position: relative;
  overflow: hidden;
  background: var(--c-bg);
  cursor: pointer;
  outline: none;
  /* Reveal on scroll */
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow var(--t-mid);
}

.project-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.project-card:nth-child(2) { transition-delay: 0.1s; }
.project-card:nth-child(3) { transition-delay: 0.2s; }

.project-card:hover {
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.project-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1), filter var(--t-mid);
  /* Placeholder color if image missing */
  background: linear-gradient(135deg, var(--c-border) 0%, var(--c-bg-alt) 100%);
  min-height: 200px;
}

.project-card:hover .project-img {
  transform: scale(1.04);
  filter: grayscale(0%);
}

/* Overlay */
.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,8,0.92) 0%, rgba(10,10,8,0.4) 60%, transparent 100%);
  opacity: 0;
  transition: opacity var(--t-mid);
  display: flex;
  align-items: flex-end;
}

.project-card:hover .project-overlay,
.project-card:focus-visible .project-overlay {
  opacity: 1;
}

.overlay-content {
  padding: 1.5rem;
  width: 100%;
  transform: translateY(8px);
  transition: transform var(--t-mid);
}

.project-card:hover .overlay-content,
.project-card:focus-visible .overlay-content {
  transform: translateY(0);
}

.overlay-index {
  color: rgba(255,255,255,0.5);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 0.4rem;
}

.overlay-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.overlay-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 0.75rem;
}

.meta-item {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.7);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.meta-label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  display: inline-block;
  margin-bottom: 0;
}

.overlay-desc {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.overlay-cta {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.6);
  transition: color var(--t-fast);
}

.project-card:hover .overlay-cta { color: #fff; }

/* ═══════════════════════════════════════════════════════
   CONTACT SECTION
═══════════════════════════════════════════════════════ */
.contact-section { background: var(--c-surface); }

.contact-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

/* Info col */
.contact-info { display: flex; flex-direction: column; gap: var(--space-md); }

.contact-dispo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem var(--space-sm);
  border: 1px solid var(--c-border);
  width: fit-content;
}

.dispo-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #5fad6e;
  flex-shrink: 0;
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.dispo-text {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}

.contact-intro {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  line-height: 1.7;
}

.contact-details { display: flex; flex-direction: column; gap: var(--space-sm); }

.contact-detail { display: flex; flex-direction: column; gap: 0.25rem; }
.detail-label { color: var(--c-text-faint); }
.detail-value {
  color: var(--c-text);
  font-size: 0.9rem;
  transition: color var(--t-fast);
  word-break: break-all;
}
.detail-value:hover { color: var(--c-accent); }

.detail-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.detail-icon { width: 14px; height: 14px; }

/* FORM */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row { display: flex; flex-direction: column; gap: 0; }

.form-row--two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-field { display: flex; flex-direction: column; gap: 0.4rem; }

.form-label {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}

.optional { color: var(--c-text-faint); text-transform: none; letter-spacing: 0; }
.required { color: var(--c-accent); }

.form-input {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-family: var(--f-display);
  font-size: 0.9rem;
  padding: 0.75rem var(--space-sm);
  transition: border-color var(--t-fast), background var(--t-fast);
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  border-radius: 0;
}

.form-input:focus {
  outline: none;
  border-color: var(--c-accent);
  background: var(--c-surface);
}

.form-input.error { border-color: #c0392b; }

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6860' stroke-width='1' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-textarea { resize: vertical; min-height: 130px; }

.field-hint {
  font-size: 0.65rem;
  color: var(--c-text-faint);
  letter-spacing: 0.05em;
}

.field-error {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: #c0392b;
  letter-spacing: 0.05em;
  min-height: 1em;
}

/* RGPD */
.form-field--checkbox { flex-direction: row; align-items: flex-start; gap: 0.75rem; }

.form-checkbox {
  flex-shrink: 0;
  width: 16px; height: 16px;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  margin-top: 2px;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: background var(--t-fast), border-color var(--t-fast);
  position: relative;
}

.form-checkbox:checked {
  background: var(--c-accent);
  border-color: var(--c-accent);
}

.form-checkbox:checked::after {
  content: '';
  position: absolute;
  top: 2px; left: 5px;
  width: 4px; height: 7px;
  border: 1px solid #fff;
  border-left: none; border-top: none;
  transform: rotate(45deg);
}

.form-label--checkbox {
  font-size: 0.78rem;
  text-transform: none;
  letter-spacing: 0;
  line-height: 1.5;
  color: var(--c-text-muted);
  flex: 1;
}

/* Submit */
.form-row--submit { flex-direction: row; align-items: center; gap: var(--space-md); }

.btn--submit {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-arrow { width: 16px; height: 16px; transition: transform var(--t-fast); }
.btn--submit:hover .btn-arrow { transform: translateX(4px); }

/* Form success */
.form-error {
  padding: var(--space-sm);
  border: 1px solid #c44;
  color: #c44;
  font-size: 0.85rem;
  line-height: 1.5;
}

.form-error[hidden],
.form-success[hidden] {
  display: none !important;
}

.form-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.form-success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: var(--space-sm);
  border: 1px solid #5fad6e;
  color: #5fad6e;
}

.form-success svg { width: 20px; height: 20px; flex-shrink: 0; }
.form-success p { font-size: 0.85rem; line-height: 1.5; }

/* ═══════════════════════════════════════════════════════
   MODALE
═══════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,8, 0.8);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  backdrop-filter: blur(4px);
}

.modal-overlay.is-open {
  display: flex;
  animation: modalFadeIn 0.3s ease;
}

.modal-overlay[hidden] {
  display: none !important;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal-container {
  background: var(--c-surface);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalSlideUp 0.4s cubic-bezier(0.16,1,0.3,1);
}

@keyframes modalSlideUp {
  from { transform: translateY(30px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  z-index: 1;
  padding: 0.5rem;
  color: var(--c-text-muted);
  transition: color var(--t-fast);
}

.modal-close:hover { color: var(--c-text); }
.modal-close svg { width: 20px; height: 20px; }

.modal-content { padding: var(--space-lg); }

.modal-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--c-border-light);
}

.modal-project-name {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.modal-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.modal-meta-item { display: flex; flex-direction: column; gap: 0.2rem; }
.modal-meta-label { color: var(--c-text-faint); font-size: 0.6rem; }
.modal-meta-value { font-size: 0.85rem; font-weight: 500; }

.modal-desc {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.modal-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.modal-gallery img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  filter: grayscale(10%);
  background: var(--c-bg-alt);
  min-height: 100px;
}

.modal-gallery img:first-child {
  grid-column: span 2;
  aspect-ratio: 16/7;
}

.modal-document { margin-bottom: var(--space-md); }
.modal-document a { text-decoration: underline; text-underline-offset: 0.2em; }

.modal-livrables { border-top: 1px solid var(--c-border-light); padding-top: var(--space-md); }
.modal-livrables-title { font-family: var(--f-mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--c-text-faint); margin-bottom: 0.75rem; }

.modal-livrables-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; }
.modal-livrables-list li {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  padding-left: 1rem;
  position: relative;
}
.modal-livrables-list li::before { content: '—'; position: absolute; left: 0; color: var(--c-accent); }

/* ═══════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════ */
.site-footer {
  background: var(--c-bg-alt);
  border-top: 1px solid var(--c-border-light);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-left { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.footer-brand { font-size: 0.7rem; letter-spacing: 0.15em; }
.footer-sep { color: var(--c-border); }
.footer-tagline { font-size: 0.8rem; color: var(--c-text-muted); }

.footer-nav { display: flex; align-items: center; gap: var(--space-sm); }
.footer-link {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--t-fast);
  padding: 0;
}
.footer-link:hover { color: var(--c-accent); }
.footer-icon { width: 14px; height: 14px; }
.footer-copy { font-size: 0.65rem; color: var(--c-text-faint); }

/* Mentions légales */
.mentions-legales {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border-light);
  padding: var(--space-lg) 0;
}

.mentions-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mentions-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.mentions-inner p { font-size: 0.85rem; color: var(--c-text-muted); line-height: 1.7; }
.mentions-close { padding: 0.5rem 0; }

/* ── BACK TO TOP ──────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px; height: 40px;
  background: var(--c-text);
  color: var(--c-bg);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: opacity var(--t-mid), transform var(--t-mid), background var(--t-mid);
  opacity: 0;
  transform: translateY(10px);
}

.back-to-top:not([hidden]) {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover { background: var(--c-accent); }
.back-to-top svg { width: 18px; height: 18px; }

/* ── THEME TOGGLE ─────────────────────────────────────── */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 5.5rem;
  width: 40px; height: 40px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  color: var(--c-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.theme-toggle:hover { color: var(--c-accent); border-color: var(--c-accent); }
.theme-toggle svg { width: 16px; height: 16px; }

.theme-sun  { display: block; }
.theme-moon { display: none; }

[data-theme="dark"] .theme-sun  { display: none; }
[data-theme="dark"] .theme-moon { display: block; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — TABLET
═══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root { --section-pad: 4rem; }

  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-content { padding: calc(var(--nav-height) + 2.5rem) var(--space-md) 2rem; }
  .hero-slider { height: 52vw; max-height: 420px; }

  .atelier-grid { grid-template-columns: 200px 1fr; }
  .atelier-geo-col { grid-column: 1 / -1; flex-direction: row; align-items: center; gap: var(--space-lg); }

  .atelier-values { grid-template-columns: 1fr 1fr; }

  .missions-grid { grid-template-columns: 1fr; }
  .method-steps { grid-template-columns: repeat(2, 1fr); }

  .projets-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE — MOBILE
═══════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root {
    --section-pad: 2.75rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
  }

  .nav-links { display: none; }
  .nav-burger { display: flex; }

  .hero-content { gap: 1.25rem; }
  .hero-ctas { flex-direction: column; align-items: flex-start; }
  .hero-slider { height: 65vw; }
  .hero-scroll-hint { display: none; }

  .atelier-grid { grid-template-columns: 1fr; }
  .atelier-portrait-col { flex-direction: row; align-items: flex-start; gap: var(--space-sm); }
  .portrait-frame { width: 120px; flex-shrink: 0; }
  .atelier-values { grid-template-columns: 1fr; }
  .atelier-geo-col { flex-direction: column; }

  .method-steps { grid-template-columns: 1fr 1fr; }

  .projets-grid { grid-template-columns: 1fr; }

  .form-row--two { grid-template-columns: 1fr; }

  .modal-gallery { grid-template-columns: 1fr; }
  .modal-gallery img:first-child { grid-column: span 1; }
  .modal-livrables-list { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; align-items: flex-start; }

  .back-to-top { bottom: 1.5rem; right: 1.5rem; }
  .theme-toggle { bottom: 1.5rem; right: 5rem; }

  .step:not(:last-child)::after { display: none; }
}

/* ── Image placeholder effect ─────────────────────────── */
img:not([src]), img[src=""] {
  background: linear-gradient(
    135deg,
    var(--c-border) 0%,
    var(--c-bg-alt) 50%,
    var(--c-border) 100%
  );
  background-size: 200% 200%;
  animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ═══════════════════════════════════════════════════════
   AJOUTS V2 — Mots animés hero, projets 2 col, badge, carte
═══════════════════════════════════════════════════════ */

/* ── Mots animés HERO ───────────────────────────────── */
.hero-words {
  overflow: hidden;
  height: 3.2rem;
  position: relative;
  opacity: 0;
  animation: fadeUp 0.6s 0.6s ease forwards;
}

.words-track {
  display: flex;
  flex-direction: column;
  gap: 0;
  animation: wordScroll 6s 1.5s cubic-bezier(0.76, 0, 0.24, 1) infinite;
}

.hero-word {
  font-family: var(--f-mono);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--c-accent);
  line-height: 3.2rem;
  display: block;
  white-space: nowrap;
}

@keyframes wordScroll {
  0%      { transform: translateY(0); }
  28%     { transform: translateY(0); }
  33%     { transform: translateY(-3.2rem); }
  61%     { transform: translateY(-3.2rem); }
  66%     { transform: translateY(-6.4rem); }
  94%     { transform: translateY(-6.4rem); }
  99%     { transform: translateY(-9.6rem); }
  100%    { transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .words-track { animation: none; }
  .hero-word:not(:first-child) { display: none; }
}

/* ── Projets — grille 2 colonnes grand format ────────── */
.projets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

/* 5e projet pleine largeur */
.project-card--wide {
  grid-column: 1 / -1;
}

/* Images plus hautes en 2 colonnes */
.projets-grid .project-img {
  aspect-ratio: 16/9;
}

/* Overlay meta en rangées horizontales */
.overlay-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
}

.meta-row {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.meta-label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.45);
  flex-shrink: 0;
  min-width: 7rem;
}

.meta-val {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}

/* ── Badge mission ───────────────────────────────────── */
.mission-badge {
  display: inline-block;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--c-accent);
  border: 1px solid var(--c-accent);
  padding: 0.2rem 0.6rem;
  margin-bottom: 0.6rem;
  opacity: 0.7;
}

/* ── Logo fallback ───────────────────────────────────── */
.logo-fallback {
  display: none;
  flex-direction: column;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  line-height: 1.25;
  text-transform: uppercase;
}

.logo-fallback strong {
  font-weight: 800;
  letter-spacing: 0.22em;
}

/* ── Carte France ajustements ────────────────────────── */
.map-region {
  transition: opacity var(--t-mid);
}

.map-region:hover {
  opacity: 0.35;
}

/* ── Responsive projets 2 col ────────────────────────── */
@media (max-width: 768px) {
  .projets-grid {
    grid-template-columns: 1fr;
  }
  .project-card--wide {
    grid-column: 1;
  }
  .projets-grid .project-img {
    aspect-ratio: 4/3;
  }
  .meta-label {
    min-width: 5.5rem;
  }
}

/* ── Form type de demandeur ──────────────────────────── */
.form-row:first-child .form-select {
  font-weight: 500;
}