/* ==========================================================================
   JKLB — Design system
   ========================================================================== */

:root {
  --color-bg: #0a0a0a;
  --color-surface: #131313;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-text: #f4f4f2;
  --color-text-dim: #a3a39c;
  --color-accent: #c9a969; /* touche dorée sobre, esprit immobilier premium */
  --color-accent-soft: rgba(201, 169, 105, 0.15);

  --font-display: "Bebas Neue", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1180px;
  --radius: 16px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 112.5%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.015em;
  line-height: 1.08;
  margin: 0 0 0.5em;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 32px 0; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

/* --- Navigation --- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), padding 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(10px);
  border-color: var(--color-border);
  padding: 14px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 14px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  transition: color 0.2s var(--ease);
  position: relative;
  white-space: nowrap;
}

.nav-links a:hover { color: var(--color-text); }

/* --- Hero --- */

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -6.67% -10% auto -10%;
  height: 70%;
  background: radial-gradient(circle at 30% 20%, var(--color-accent-soft), transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  max-width: 16ch;
  margin-bottom: 0.35em;
}

.hero .lead {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--color-text-dim);
  max-width: 46ch;
  margin-bottom: 2.2em;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn-primary { background: var(--color-text); color: #0a0a0a; }
.btn-primary:hover { transform: translateY(-2px); }

.btn-outline { border: 1px solid var(--color-border); color: var(--color-text); }
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); }

/* --- Section headings --- */

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin: 0; }
.section-head p { color: var(--color-text-dim); max-width: 46ch; margin: 0; }

/* --- About --- */

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.about-photo {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 5;
}

.about-photo img { width: 100%; height: 100%; object-fit: cover; }

.about-text p { color: var(--color-text-dim); margin-bottom: 1.2em; }

.about-facts {
  list-style: none;
  padding: 24px 0 0;
  margin: 24px 0 0;
  border-top: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.about-facts li span { display: block; }
.about-facts .fact-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-dim); margin-bottom: 4px; }
.about-facts .fact-value { font-size: 0.98rem; }

/* --- Process --- */

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.process-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.process-card:hover { transform: translateY(-6px); border-color: var(--color-accent); }

.process-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.process-card h3 { font-size: 1.1rem; margin-bottom: 0.5em; }
.process-card p { color: var(--color-text-dim); font-size: 0.94rem; margin: 0; }

/* --- Expertises --- */

.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
}

.expertise-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.expertise-item:hover { transform: translateY(-4px); border-color: var(--color-accent); }

.expertise-check {
  flex: none;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
}

.expertise-item h3 {
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 600;
  margin: 0 0 0.35em;
}

.expertise-item p {
  margin: 0;
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

/* --- Stats --- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-card {
  padding: 36px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--color-accent);
  display: block;
}

.stat-label {
  color: var(--color-text-dim);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* --- Cities --- */

.cities-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.city-card {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  isolation: isolate;
}

.city-card--alsace { background-image: url('../img/alsace-bg.jpg'); }
.city-card--centre { background-image: url('../img/orleans-bg.jpg'); }

.city-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.28) 0%, rgba(10,10,10,0.43) 100%);
  z-index: -1;
}

.city-card h3 { margin-bottom: 1em; text-shadow: 0 2px 10px rgba(0,0,0,0.7); }

.city-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.city-list li {
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(4px);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.city-list li:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* --- Projects --- */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  display: block;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.project-card:hover img { transform: scale(1.06); }

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 55%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 22px;
}

.project-status {
  align-self: flex-start;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(6px);
  margin-bottom: 12px;
}

.project-status.livre { color: #8fe3b3; }
.project-status.en_cours { color: #f4c86b; }
.project-status.a_venir { color: #a3a39c; }

.project-overlay h3 { font-size: 1.15rem; margin-bottom: 0.2em; }
.project-overlay span { color: var(--color-text-dim); font-size: 0.85rem; }

.project-views {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1;
  font-size: 0.72rem;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 5px 11px;
  border-radius: 999px;
}

/* --- Investisseurs --- */

.investor-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  text-align: center;
}

.investor-text { max-width: 60ch; }
.investor-text h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); }
.investor-text p { color: var(--color-text-dim); margin: 0; }

.investor-form {
  display: flex;
  justify-content: center;
  width: 100%;
}

.investor-form iframe {
  width: 100%;
  max-width: 520px;
  height: 155px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

/* --- Contact / Footer --- */

.contact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 56px;
  text-align: center;
}

.contact-card h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.8em; }
.contact-card p { color: var(--color-text-dim); max-width: 48ch; margin: 0 auto 2em; }

.contact-form {
  display: flex;
  justify-content: center;
}

.contact-form iframe {
  width: 100%;
  max-width: 480px;
  height: 460px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
}

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-admin-link {
  color: var(--color-text-dim);
  opacity: 0.6;
  transition: opacity 0.2s var(--ease);
}

.footer-admin-link:hover { opacity: 1; }

.visit-count {
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Scroll reveal --- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

.reveal-stagger.is-visible > * {
  transition-delay: calc(var(--stagger-index, 0) * 80ms);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-visible { opacity: 1; transform: none; transition: none; }
}

/* --- Responsive --- */

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cities-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .expertise-grid { grid-template-columns: 1fr; }
  .investor-card { padding: 24px 16px; }
}

@media (max-width: 640px) {
  section { padding: 24px 0; }
  .site-header .container { justify-content: flex-start; }
  .nav-links {
    width: 100%;
    order: 3;
    gap: 22px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: 0.85rem; }
  .process-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-card { padding: 36px 22px; }
  .about-facts { grid-template-columns: 1fr; }
}

/* ==========================================================================
   FANCY EXPERIMENTAL EFFECTS — branche de test, jamais en prod
   ========================================================================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 200;
  background: transparent;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), #fff, var(--color-accent));
  background-size: 200% 100%;
  animation: progressShimmer 3s linear infinite;
  transition: width 0.1s ease-out;
  box-shadow: 0 0 12px var(--color-accent);
}

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

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 105, 0.14) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 5;
  will-change: transform;
}

.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 201;
  mix-blend-mode: difference;
  transition: width 0.2s var(--ease), height 0.2s var(--ease);
  will-change: transform;
}

.cursor-dot.is-hover {
  width: 40px;
  height: 40px;
  background: rgba(201, 169, 105, 0.4);
}

@media (hover: none), (pointer: coarse) {
  .cursor-glow, .cursor-dot { display: none; }
}

.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.6;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
  transform: translateZ(0);
}

body.is-scrolling .hero-blob-1,
body.is-scrolling .hero-blob-2,
body.is-scrolling .hero-particles {
  animation-play-state: paused;
  visibility: hidden;
}

.hero-blob-1 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: -100px;
  left: 10%;
  animation: blobFloat1 18s ease-in-out infinite;
}

.hero-blob-2 {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, #6ea8ff 0%, transparent 70%);
  bottom: -80px;
  right: 8%;
  opacity: 0.18;
  animation: blobFloat2 22s ease-in-out infinite;
}

@keyframes blobFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, 30px) scale(1.1); }
  66% { transform: translate(-30px, 50px) scale(0.9); }
}

@keyframes blobFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-50px, -40px) scale(1.15); }
}

.hero .container { position: relative; z-index: 1; }

.hero h1 {
  transition: transform 0.15s ease-out;
}

.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out, box-shadow 0.3s ease;
  will-change: transform;
}

.tilt-card:hover {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.magnetic {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleAnim {
  to { transform: scale(3); opacity: 0; }
}

.btn, .project-card, .process-card, .expertise-item, .city-card, .stat-card {
  position: relative;
  overflow: hidden;
}

.stat-value.is-counting { color: var(--color-accent); }

@media (prefers-reduced-motion: reduce) {
  .scroll-progress-bar { animation: none; }
  .hero-blob-1, .hero-blob-2 { animation: none; }
  .cursor-glow, .cursor-dot, .hero-particles { display: none; }
}