/* =========================================================
   C-Consult — Site vitrine
   Palette : bleu profond, bleu clair, gris anthracite, blanc
   ========================================================= */

:root {
  --bleu-900: #0b1e3f;
  --bleu-700: #1e3a8a;
  --bleu-500: #2f55d4;
  --bleu-300: #6b8cf2;
  --bleu-100: #e6ecff;
  --gris-900: #0f172a;
  --gris-700: #334155;
  --gris-500: #64748b;
  --gris-200: #e2e8f0;
  --gris-100: #f1f5f9;
  --gris-50:  #f8fafc;
  --blanc:    #ffffff;
  --accent:   #38bdf8;

  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.04);
  --shadow-md: 0 4px 12px rgba(15,23,42,.08), 0 2px 4px rgba(15,23,42,.04);
  --shadow-lg: 0 20px 40px -12px rgba(15,23,42,.18);

  --radius: 12px;
  --radius-sm: 6px;

  --container: 1200px;
  --transition: .25s ease;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--gris-900);
  background: var(--blanc);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--bleu-500); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--bleu-700); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; color: var(--bleu-900); margin: 0 0 .75em; }
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); letter-spacing: -.01em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }
p  { margin: 0 0 1em; color: var(--gris-700); }

/* ---------- layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}
section { padding: 5rem 0; }
.section-muted { background: var(--gris-50); }
.section-dark  { background: var(--bleu-900); color: var(--blanc); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--blanc); }
.section-dark p { color: rgba(255,255,255,.8); }

.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bleu-500);
  margin-bottom: .5rem;
}
.section-dark .eyebrow { color: var(--accent); }

.section-title {
  max-width: 720px;
  margin-bottom: 3rem;
}
.section-title.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gris-200);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: .65rem 0;
}
.brand {
  display: inline-flex; align-items: center;
  text-decoration: none;
}
.brand img { height: 56px; width: auto; display: block; }
.brand:hover { filter: brightness(.9); }
@media (max-width: 600px) {
  .brand img { height: 46px; }
}
/* footer variant — logo on dark bg: put on a white card for readability */
.site-footer .brand img {
  height: 52px;
  background: #fff;
  padding: .35rem .8rem;
  border-radius: 10px;
}
.nav-links {
  list-style: none; display: flex; gap: 1.75rem;
  margin: 0; padding: 0;
}
.nav-links a {
  color: var(--gris-700); font-weight: 500; font-size: .95rem;
  padding: .4rem 0; position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--bleu-900); }
.nav-links a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 2px; background: var(--bleu-500); border-radius: 2px;
}
.nav-cta { display: flex; gap: .75rem; align-items: center; }
.nav-toggle {
  display: none;
  background: none; border: 0; cursor: pointer; padding: .4rem;
  color: var(--gris-900);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600; font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--bleu-500); color: #fff;
  box-shadow: 0 8px 20px -8px rgba(47,85,212,.6);
}
.btn-primary:hover { background: var(--bleu-700); color: #fff; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--bleu-900);
  border-color: var(--gris-200);
}
.btn-ghost:hover { border-color: var(--bleu-500); color: var(--bleu-700); }
.btn-outline-light {
  background: transparent; color: #fff;
  border-color: rgba(255,255,255,.35);
}
.btn-outline-light:hover { background: #fff; color: var(--bleu-900); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: linear-gradient(90deg, rgba(11,30,63,.92) 0%, rgba(11,30,63,.72) 45%, rgba(11,30,63,.15) 100%),
                    url('../images/header-6.jpg');
  background-size: cover;
  background-position: center;
  z-index: -1;
}
.hero-inner {
  padding: 7rem 0 6rem;
  max-width: 760px;
}
.hero .eyebrow { color: var(--accent); }
.hero h1 { color: #fff; }
.hero p { color: rgba(255,255,255,.88); font-size: 1.15rem; max-width: 620px; }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 2rem; }

.hero-inline {
  padding: 3rem 0 2rem;
}
.hero-inline .hero-inner { padding: 0; }
.hero-inline::before {
  background-image: linear-gradient(135deg, rgba(11,30,63,.88) 0%, rgba(30,58,138,.78) 100%),
                    url('../images/header4.jpg');
}

/* ---------- grid helpers ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--gris-200);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column; gap: .8rem;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--bleu-300); }
.card .card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--bleu-100); color: var(--bleu-700);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 700;
  margin-bottom: .4rem;
}
.card h3 { margin: 0; }
.card .arrow {
  margin-top: auto; color: var(--bleu-500); font-weight: 600; font-size: .9rem;
}

/* Expertise tile (homepage) */
.expertise {
  background: #fff;
  border: 1px solid var(--gris-200);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.expertise:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.expertise-img {
  aspect-ratio: 16/10; overflow: hidden; background: var(--gris-100);
}
.expertise-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s ease;
}
.expertise:hover .expertise-img img { transform: scale(1.05); }
.expertise-body { padding: 1.5rem 1.5rem 1.75rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.expertise-body h3 { margin: 0; }
.expertise-body p  { margin: 0 0 .25rem; font-size: .95rem; }
.expertise-body ul { margin: 0; padding-left: 1.1rem; color: var(--gris-700); font-size: .92rem; }
.expertise-body ul li { margin-bottom: .2rem; }
.expertise-body .link {
  margin-top: auto; font-weight: 600; color: var(--bleu-500);
  display: inline-flex; align-items: center; gap: .25rem;
}

/* ---------- feature row (side by side) ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.feature-row.reverse > :first-child { order: 2; }
.feature-row img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
@media (max-width: 900px) {
  .feature-row { grid-template-columns: 1fr; gap: 2rem; }
  .feature-row.reverse > :first-child { order: 0; }
}

/* ---------- stats ---------- */
.stats {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 2rem;
  padding: 2.5rem; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--bleu-900), var(--bleu-700));
  color: #fff;
}
.stat-num { font-size: 2.5rem; font-weight: 800; color: #fff; line-height: 1; }
.stat-label { color: rgba(255,255,255,.85); font-size: .95rem; margin-top: .4rem; }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2,1fr); } }

/* ---------- bullet list w/ check ---------- */
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.check-list li {
  position: relative; padding-left: 1.75rem;
  color: var(--gris-700);
}
.check-list li::before {
  content: '';
  position: absolute; left: 0; top: .5em;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bleu-500);
  box-shadow: 0 0 0 4px var(--bleu-100);
}

/* ---------- clients carousel (infinite marquee) ---------- */
.clients-carousel {
  position: relative;
  overflow: hidden;
  padding: 2rem 0;
  background: #fff;
  border: 1px solid var(--gris-200);
  border-radius: var(--radius);
  /* Fade edges */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.clients-track {
  display: flex;
  gap: 3.5rem;
  align-items: center;
  width: max-content;
  animation: clients-scroll 40s linear infinite;
}
.clients-carousel:hover .clients-track { animation-play-state: paused; }
.clients-track img {
  height: 64px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  flex-shrink: 0;
  filter: grayscale(35%);
  opacity: .85;
  transition: filter var(--transition), opacity var(--transition), transform var(--transition);
}
.clients-track img:hover {
  filter: none;
  opacity: 1;
  transform: scale(1.08);
}
@keyframes clients-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (max-width: 600px) {
  .clients-track { gap: 2rem; animation-duration: 30s; }
  .clients-track img { height: 48px; max-width: 140px; }
}

/* Legacy classes (fallback) */
.clients-wall {
  background: #fff; border-radius: var(--radius);
  padding: 2.5rem 2rem; border: 1px solid var(--gris-200);
}
.clients-wall img { width: 100%; max-width: 900px; margin: 0 auto; display: block; }

/* ---------- gallery (references) ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .gallery { grid-template-columns: 1fr; } }

.ref-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--gris-100);
  isolation: isolate;
  cursor: zoom-in;
}
.ref-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s ease;
}
.ref-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,30,63,.88) 0%, rgba(11,30,63,0) 60%);
  opacity: 0; transition: opacity var(--transition);
}
.ref-card .ref-label {
  position: absolute; left: 1rem; right: 1rem; bottom: 1rem; z-index: 2;
  color: #fff;
  transform: translateY(10px);
  opacity: 0; transition: opacity var(--transition), transform var(--transition);
}
.ref-card .ref-label .ref-title {
  display: block; font-weight: 600; font-size: 1rem; line-height: 1.3;
}
.ref-card .ref-label .ref-desc {
  display: block; font-weight: 400; font-size: .85rem; line-height: 1.4;
  margin-top: .35rem; opacity: .92;
}
.ref-card:hover img { transform: scale(1.06); }
.ref-card:hover::after { opacity: 1; }
.ref-card:hover .ref-label { opacity: 1; transform: translateY(0); }

/* Mobile / tactile : toujours afficher les labels (pas de hover possible) */
@media (hover: none) {
  .ref-card::after { opacity: 1; }
  .ref-card .ref-label { opacity: 1; transform: translateY(0); }
}

/* ---------- CTA strip ---------- */
.cta-strip {
  position: relative;
  padding: 5rem 0;
  color: #fff;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}
.cta-strip::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(135deg, rgba(11,30,63,.92), rgba(30,58,138,.88)),
              url('../images/cta-bg.jpg') center/cover;
}
.cta-strip h2 { color: #fff; }
.cta-strip p { color: rgba(255,255,255,.88); max-width: 640px; margin: 0 auto 2rem; font-size: 1.1rem; }

/* ---------- forms ---------- */
.form {
  display: grid; gap: 1rem;
  max-width: 640px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form label { font-weight: 600; font-size: .9rem; color: var(--gris-700); display: block; margin-bottom: .35rem; }
.form input,
.form select,
.form textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1px solid var(--gris-200);
  border-radius: var(--radius-sm);
  font-family: inherit; font-size: 1rem;
  background: #fff; color: var(--gris-900);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--bleu-500);
  box-shadow: 0 0 0 3px rgba(47,85,212,.18);
}
.form textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .85rem; color: var(--gris-500); }

/* ---------- contact blocks ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem;
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info {
  display: grid; gap: 1.25rem;
}
.info-block {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1.25rem;
  border: 1px solid var(--gris-200); border-radius: var(--radius);
  background: #fff;
}
.info-icon {
  flex: 0 0 42px; width: 42px; height: 42px; border-radius: 10px;
  background: var(--bleu-100); color: var(--bleu-700);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.info-block h4 { margin: 0 0 .2rem; font-size: 1rem; }
.info-block p  { margin: 0; color: var(--gris-700); font-size: .95rem; }

/* ---------- software chip ---------- */
.software {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; align-items: center;
}
.software img {
  height: 64px; width: 140px;
  object-fit: contain;
  padding: .6rem .75rem;
  background: #fff; border: 1px solid var(--gris-200); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
.software img:hover { transform: translateY(-2px); }

/* ---------- breadcrumb ---------- */
.breadcrumb {
  font-size: .9rem; color: rgba(255,255,255,.7);
}
.breadcrumb a { color: rgba(255,255,255,.9); }

/* ---------- footer ---------- */
.site-footer {
  background: var(--bleu-900);
  color: rgba(255,255,255,.75);
  padding: 4rem 0 1.5rem;
  margin-top: 0;
}
.footer-grid {
  display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 2.5rem;
  padding-bottom: 3rem;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h5 {
  color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .1em;
  margin: 0 0 1rem;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.site-footer a { color: rgba(255,255,255,.75); }
.site-footer a:hover { color: #fff; }
.footer-brand p { margin: .6rem 0 0; color: rgba(255,255,255,.7); font-size: .95rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
  font-size: .85rem; color: rgba(255,255,255,.55);
  flex-wrap: wrap; gap: .75rem;
}

/* ---------- misc ---------- */
.pie-wrap {
  background: #fff; padding: 1.5rem; border-radius: var(--radius);
  border: 1px solid var(--gris-200);
}
.pie-wrap img { margin: 0 auto; }

/* ---------- SVG donut chart ---------- */
.donut-chart {
  margin: 0;
  padding: 2rem;
  background: #fff;
  border: 1px solid var(--gris-200);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.donut-svg {
  width: 100%;
  max-width: 280px;
  height: auto;
  overflow: visible;
}
.donut-bg { stroke: var(--gris-100); }
.donut-slice {
  stroke-dasharray: 0 100;
  transition: stroke-dasharray 1.2s cubic-bezier(.5,0,.25,1),
              stroke-width .3s ease,
              filter .3s ease;
  transform-origin: 100px 100px;
}
.donut-chart.animate .donut-slice.s1 { stroke-dasharray: var(--pct1) 100; transition-delay: .1s; }
.donut-chart.animate .donut-slice.s2 { stroke-dasharray: var(--pct2) 100; transition-delay: .45s; }
.donut-chart.animate .donut-slice.s3 { stroke-dasharray: var(--pct3) 100; transition-delay: .8s; }
.donut-chart .donut-slice:hover {
  stroke-width: 34;
  filter: drop-shadow(0 4px 8px rgba(15,23,42,.18));
}
.donut-center-label {
  font-size: 9px;
  font-weight: 600;
  fill: var(--gris-500);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.donut-center-value {
  font-size: 22px;
  font-weight: 800;
  fill: var(--bleu-900);
}
.donut-legend {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .6rem;
  width: 100%;
}
.donut-legend li {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .95rem;
  color: var(--gris-700);
  padding: .5rem .75rem;
  border-radius: 8px;
  transition: background .2s ease;
}
.donut-legend li:hover { background: var(--gris-50); }
.donut-legend .dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}
.donut-legend .pct {
  margin-left: auto;
  font-weight: 700;
  color: var(--bleu-900);
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline-block; padding: .25rem .6rem;
  border-radius: 999px; font-size: .75rem; font-weight: 600;
  background: var(--bleu-100); color: var(--bleu-700);
  letter-spacing: .02em;
}

/* ---------- mobile nav ---------- */
@media (max-width: 900px) {
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--gris-200);
    flex-direction: column; align-items: stretch;
    padding: 1rem 1.25rem; gap: 0;
    transform: translateY(-120%); opacity: 0; pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }
  .nav-links.open {
    transform: translateY(0); opacity: 1; pointer-events: auto;
  }
  .nav-links li { border-top: 1px solid var(--gris-100); }
  .nav-links li:first-child { border-top: 0; }
  .nav-links a { display: block; padding: .9rem 0; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn { display: none; }
}

/* ---------- legal pages ---------- */
.legal {
  max-width: 820px;
  margin: 0 auto;
}
.legal h2 {
  margin-top: 2.5rem; margin-bottom: .75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gris-200);
  font-size: 1.3rem;
}
.legal h2:first-of-type { border-top: 0; padding-top: 0; }
.legal h3 { margin-top: 1.5rem; font-size: 1.05rem; }
.legal p { color: var(--gris-700); }
.legal ul { padding-left: 1.25rem; color: var(--gris-700); }
.legal ul li { margin-bottom: .4rem; }
.legal .update-date {
  display: inline-block; font-size: .85rem; color: var(--gris-500);
  background: var(--gris-100); padding: .35rem .75rem; border-radius: 999px;
  margin-bottom: 1.5rem;
}

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }