/* ============================================
   DESIGN SYSTEM — La Tarzonie
   Identite editoriale professionnelle
   ============================================ */
:root {
  --white: #f7f6f2;
  --black: #100d09;
  --ink: #14120f;
  --muted: #68635a;
  --faint: #efece4;
  --accent: #7a2222;
  --line: rgba(20,18,15,0.10);
  --line-strong: rgba(20,18,15,0.24);
  --seal: #7a2222;                /* accent secondaire, alias compat */
  --seal-soft: rgba(122,34,34,0.10);
  --brass: #92703a;               /* accent tertiaire discret (labels) */
  --brass-soft: rgba(146,112,58,0.28);
  --mono: 'DM Mono', monospace;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --display: 'Cinzel', var(--serif);
  --sans: 'Outfit', sans-serif;
  --max: 1120px;
  --nav-h: 68px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }
body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* LANG */
[data-lang="en"] { display: none !important; }
body.en [data-lang="fr"] { display: none !important; }
body.en div[data-lang="en"]    { display: block !important; }
body.en section[data-lang="en"]{ display: block !important; }
body.en p[data-lang="en"]      { display: block !important; }
body.en h1[data-lang="en"]     { display: block !important; }
body.en h2[data-lang="en"]     { display: block !important; }
body.en h3[data-lang="en"]     { display: block !important; }
body.en h4[data-lang="en"]     { display: block !important; }
body.en span[data-lang="en"]   { display: inline !important; }
body.en a[data-lang="en"]      { display: inline-block !important; }
body.en button[data-lang="en"] { display: inline-block !important; }
body.en li[data-lang="en"]     { display: list-item !important; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h);
  background: rgba(247,246,242,0.82); backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  z-index: 100; display: flex; align-items: center;
  transition: height 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
nav.nav-scrolled {
  height: 56px;
  background: rgba(247,246,242,0.96);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(20,18,15,0.05);
}
.nav-inner { max-width: 1540px; margin: 0 auto; padding: 0 40px; width: 100%; height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--display); font-size: 19px; font-weight: 700; letter-spacing: 0.5px; color: var(--ink); text-decoration: none; display: inline-flex; align-items: baseline; gap: 8px; transition: opacity 0.2s var(--ease); }
.nav-logo:hover { opacity: 0.7; }
.nav-logo span { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: 0; }
.nav-links { display: flex; align-items: center; gap: 22px; list-style: none; }
.nav-links a { font-size: 12px; font-weight: 500; letter-spacing: 1.6px; text-transform: uppercase; color: var(--muted); text-decoration: none; transition: color 0.25s var(--ease); position: relative; }
.nav-links a::after { content: ''; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-right { display: flex; align-items: center; gap: 20px; }
.lang-btn { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: var(--muted); background: none; border: 1px solid var(--line); border-radius: 4px; padding: 5px 10px; cursor: pointer; transition: all 0.25s var(--ease); }
.lang-btn:hover { color: var(--ink); border-color: var(--ink); }
.nav-join { font-family: var(--sans); font-size: 12px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--white); background: var(--ink); border: 1px solid var(--ink); padding: 9px 20px; cursor: pointer; text-decoration: none; transition: all 0.25s var(--ease); border-radius: 4px; display: inline-block; }
.nav-join:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(122,34,34,0.22); }

/* PAGE HERO (for inner pages) */
.page-hero { padding-top: var(--nav-h); padding-bottom: 0; min-height: 40vh; display: flex; flex-direction: column; justify-content: flex-end; position: relative; overflow: hidden; }
.page-hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.4;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}
.page-hero-inner { max-width: var(--max); margin: 0 auto; padding: 60px 40px 56px; width: 100%; position: relative; z-index: 2; display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.page-hero-text { flex: 1; }
.page-hero-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 3px; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; opacity: 0; animation: fadeUp 0.7s var(--ease) 0.05s forwards; }
.page-hero-tag::before { content: ''; width: 22px; height: 1px; background: var(--accent); display: inline-block; }
.page-hero-title { font-family: var(--serif); font-size: clamp(48px, 7vw, 96px); font-weight: 300; line-height: 1.0; letter-spacing: -2px; color: var(--ink); opacity: 0; animation: fadeUp 0.8s var(--ease) 0.15s forwards; }
.page-hero-title em { font-style: italic; color: var(--accent); }
@media (max-width: 900px) { .page-hero-inner { flex-direction: column; align-items: flex-start; gap: 24px; } }

/* SECTIONS */
section { padding: 100px 40px; max-width: var(--max); margin: 0 auto; }
.section-full { max-width: 100%; padding: 100px 0; }
.section-inner { max-width: var(--max); margin: 0 auto; padding: 0 40px; }
.section-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 3px; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.section-tag::before { content: ''; width: 22px; height: 1px; background: var(--accent); display: inline-block; }
.section-title { font-family: var(--serif); font-size: clamp(32px, 4vw, 52px); font-weight: 300; line-height: 1.1; letter-spacing: -1px; color: var(--ink); margin-bottom: 24px; }
.section-title em { font-style: italic; color: var(--accent); }
.section-divider { width: 100%; height: 1px; background: var(--line); }

/* BUTTONS */
.btn-primary { font-family: var(--sans); font-size: 13px; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; color: var(--white); background: var(--ink); border: 1px solid var(--ink); padding: 14px 32px; cursor: pointer; text-decoration: none; display: inline-block; border-radius: 4px; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(122,34,34,0.22); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 10px rgba(122,34,34,0.2); }
.btn-secondary { font-family: var(--sans); font-size: 13px; font-weight: 400; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); background: none; border: none; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; transition: color 0.25s var(--ease); }
.btn-secondary:hover { color: var(--accent); }
.btn-secondary::after { content: '→'; transition: transform 0.3s var(--ease); }
.btn-secondary:hover::after { transform: translateX(4px); }

/* PROJECTS */
.projects-section { background: var(--ink); color: var(--white); }
.projects-section .section-tag { color: rgba(247,246,242,0.5); }
.projects-section .section-title { color: var(--white); }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(247,246,242,0.08); margin-top: 60px; }
.projects-grid-2 { grid-template-columns: repeat(2, 1fr); }
.project-card { background: var(--ink); padding: 40px; transition: background 0.3s var(--ease), transform 0.3s var(--ease); cursor: pointer; text-decoration: none; display: block; position: relative; overflow: hidden; }
.project-card:hover { background: #201d17; transform: translateY(-4px); z-index: 2; }
.project-card::after { content: '↗'; position: absolute; top: 32px; right: 32px; font-size: 18px; color: rgba(247,246,242,0.2); transition: all 0.3s var(--ease); }
.project-card:hover::after { color: rgba(247,246,242,0.9); transform: translate(3px, -3px); }
.project-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: rgba(247,246,242,0.4); margin-bottom: 20px; }
.project-name { font-family: var(--serif); font-size: 28px; font-weight: 300; color: var(--white); margin-bottom: 12px; line-height: 1.2; }
.project-desc { font-size: 14px; color: rgba(247,246,242,0.55); line-height: 1.6; margin-bottom: 28px; }
.project-status { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 11px; letter-spacing: 1px; color: rgba(247,246,242,0.45); }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: rgba(247,246,242,0.3); }
.status-dot.active { background: #4fd67a; box-shadow: 0 0 8px rgba(79,214,122,0.6); animation: pulseDot 2.4s ease-in-out infinite; }
.status-dot.building { background: #e0b658; box-shadow: 0 0 8px rgba(224,182,88,0.6); animation: pulseDot 2.4s ease-in-out infinite; }
.status-dot.planned { background: rgba(247,246,242,0.25); }
@keyframes pulseDot { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }
/* stagger reveal for project cards */
.projects-grid.reveal.visible .project-card,
.projects-grid-2.reveal.visible .project-card { animation: fadeUp 0.6s var(--ease) both; }
.projects-grid .project-card:nth-child(1), .projects-grid-2 .project-card:nth-child(1) { animation-delay: 0.02s; }
.projects-grid .project-card:nth-child(2), .projects-grid-2 .project-card:nth-child(2) { animation-delay: 0.09s; }
.projects-grid .project-card:nth-child(3), .projects-grid-2 .project-card:nth-child(3) { animation-delay: 0.16s; }
.projects-grid .project-card:nth-child(4), .projects-grid-2 .project-card:nth-child(4) { animation-delay: 0.23s; }
.projects-grid .project-card:nth-child(5) { animation-delay: 0.30s; }
.projects-grid .project-card:nth-child(6) { animation-delay: 0.37s; }

/* FORMS */
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-label { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }
.form-input, .form-textarea { font-family: var(--sans); font-size: 15px; font-weight: 300; color: var(--ink); background: transparent; border: none; border-bottom: 1px solid var(--line); padding: 12px 0; outline: none; transition: border-color 0.3s var(--ease); resize: none; }
.form-input:focus, .form-textarea:focus { border-bottom-color: var(--accent); }
.form-input::placeholder, .form-textarea::placeholder { color: rgba(104,99,90,0.4); }
.form-submit { align-self: flex-start; margin-top: 8px; }
.form-success { display: none; font-family: var(--mono); font-size: 12px; letter-spacing: 1px; color: var(--muted); padding: 12px 0; }

/* FOOTER */
footer { border-top: 1px solid var(--line); padding: 40px; max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-logo { font-family: var(--display); font-size: 16px; font-weight: 700; color: var(--ink); letter-spacing: 0.5px; }
.footer-copy { font-family: var(--mono); font-size: 11px; letter-spacing: 1px; color: var(--muted); }
.footer-links { display: flex; gap: 28px; list-style: none; }
.footer-links a { font-family: var(--mono); font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); text-decoration: none; transition: color 0.25s var(--ease); }
.footer-links a:hover { color: var(--accent); }

/* SHARED UTILITIES */
.drop-cap:first-letter { font-family: var(--display); font-size: 3.2em; float: left; line-height: 0.8; padding: 0.05em 0.08em 0 0; color: var(--accent); }
.dossier-num { font-family: var(--mono); font-size: 11px; letter-spacing: 1px; color: var(--muted); }

/* ANIMATIONS */
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-scale { opacity: 0; transform: scale(0.96); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal-scale.visible { opacity: 1; transform: scale(1); }

a, button, .lang-btn, .copy-btn, .nav-burger, .form-input, .form-textarea { transition-timing-function: var(--ease); }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-scale { opacity: 1 !important; transform: none !important; transition: none !important; }
  .page-hero-tag, .page-hero-title { opacity: 1 !important; animation: none !important; }
  .status-dot.active, .status-dot.building { animation: none !important; }
  * { scroll-behavior: auto !important; }
}

/* MOBILE NAV BURGER */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: background 0.2s var(--ease);
}
.nav-burger:hover { background: var(--faint); }
.nav-burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
  transform-origin: center;
}
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* MOBILE MENU OVERLAY */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(247,246,242,0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  padding: 40px 24px 48px;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 40px;
}
.mobile-menu-links li { border-bottom: 1px solid var(--line); opacity: 0; transform: translateX(-12px); }
.mobile-menu-links li:first-child { border-top: 1px solid var(--line); }
.mobile-menu.open .mobile-menu-links li { animation: slideIn 0.5s var(--ease) forwards; }
.mobile-menu-links li:nth-child(1) { animation-delay: 0.03s; }
.mobile-menu-links li:nth-child(2) { animation-delay: 0.08s; }
.mobile-menu-links li:nth-child(3) { animation-delay: 0.13s; }
.mobile-menu-links li:nth-child(4) { animation-delay: 0.18s; }
.mobile-menu-links li:nth-child(5) { animation-delay: 0.23s; }
.mobile-menu-links li:nth-child(6) { animation-delay: 0.28s; }
.mobile-menu-links li:nth-child(7) { animation-delay: 0.33s; }
.mobile-menu-links li:nth-child(8) { animation-delay: 0.38s; }
.mobile-menu-links li:nth-child(9) { animation-delay: 0.43s; }
.mobile-menu-links li:nth-child(10) { animation-delay: 0.48s; }
.mobile-menu-links li:nth-child(11) { animation-delay: 0.53s; }
.mobile-menu-links li:nth-child(12) { animation-delay: 0.58s; }
@keyframes slideIn { to { opacity: 1; transform: translateX(0); } }
.mobile-menu-links a {
  display: block;
  padding: 20px 0;
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 300;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.mobile-menu-links a.active { font-style: italic; color: var(--accent); }
.mobile-menu-links a:hover { color: var(--accent); padding-left: 8px; }
.mobile-menu-bottom {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* RESPONSIVE */
/* La nav bascule sur le menu hamburger bien avant les autres ajustements
   mobiles : avec 9 liens + Rejoindre + EN, elle a besoin de beaucoup de
   largeur et déborderait sur un simple ordinateur portable si on la
   gardait "desktop" jusqu'à 768px comme le reste de la mise en page. */
@media (max-width: 1480px) {
  .nav-links { display: none; }
  .nav-right .nav-join,
  body.en a.nav-join[data-lang="en"],
  a.nav-join[data-lang="fr"] { display: none !important; }
  .nav-burger { display: flex; }
}
@media (max-width: 768px) {
  .page-hero-inner { padding: 40px 24px 40px; }
  section { padding: 72px 24px; }
  .projects-grid, .projects-grid-2 { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 16px; padding: 32px 24px; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
}