/*
  VIGNES INGENIERIE - V5 unique CSS
  Corrections incluses :
  1) marges internes des panneaux
  2) densité / largeur des titres de section
  3) équilibre texte/cartes/paddings
*/

:root {
  --bg: #f7f4ee;
  --surface: #fffdfa;
  --surface-soft: #fbf7f2;
  --text: #1f1b17;
  --muted: #6a625a;
  --line: #e6ddd3;
  --accent: #946d4a;
  --accent-dark: #79583d;
  --accent-soft: rgba(148, 109, 74, 0.10);
  --shadow-lg: 0 18px 44px rgba(29, 23, 17, 0.08);
  --shadow-md: 0 10px 24px rgba(29, 23, 17, 0.06);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1240px;
  --header-h: 70px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Manrope', Arial, Helvetica, sans-serif;
  color: var(--text);
  line-height: 1.5;
  background:
    radial-gradient(circle at top left, rgba(148, 109, 74, 0.055), transparent 23%),
    linear-gradient(180deg, rgba(255,255,255,0.3), rgba(255,255,255,0)),
    var(--bg);
}
body.menu-open { overflow: hidden; }
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.section {
  padding: clamp(1.9rem, 3.6vw, 3.2rem) 0;
  scroll-margin-top: calc(var(--header-h) + 14px);
}

.panel {
  background: rgba(255, 253, 250, 0.72);
  border: 1px solid rgba(230, 221, 211, 0.9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(6px);
}

.panel-hero {
  padding: clamp(1.15rem, 1.8vw, 1.65rem);
}

.content-panel {
  padding: clamp(1rem, 1.7vw, 1.35rem);
}

.card-surface {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(230, 221, 211, 0.82);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 18px rgba(29, 23, 17, 0.04);
}

.card-pad {
  padding: clamp(1.1rem, 1.7vw, 1.4rem);
}

.section-heading,
.compact-heading {
  max-width: 880px;
  margin: 0 0 1rem;
  padding-inline: clamp(0.12rem, 0.55vw, 0.35rem);
}

.section-kicker,
.eyebrow {
  display: inline-block;
  margin: 0 0 0.55rem;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1, h2, h3, p, ul, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }

h1 {
  font-size: clamp(2.05rem, 3.8vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  max-width: 12ch;
}

h2 {
  font-size: clamp(1.55rem, 2.3vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 0.55rem;
}

.compact-heading h2 {
  max-width: min(17ch, 100%);
  margin-right: auto;
}

.compact-heading > p:last-child {
  max-width: 62ch;
}

h3 {
  font-size: clamp(1.02rem, 1.2vw, 1.18rem);
  line-height: 1.18;
  margin-bottom: 0.42rem;
}

p, li {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(250, 248, 244, 0.9);
  border-bottom: 1px solid rgba(230, 221, 211, 0.92);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 0.95rem;
  align-items: center;
  min-height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #c39a76);
  box-shadow: 0 0 0 5px rgba(148, 109, 74, 0.11);
}
.logo-text { font-size: 0.95rem; }

.main-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem 1.1rem;
}
.main-nav a {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.92rem;
  transition: color 0.2s ease, transform 0.2s ease;
}
.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--text);
  transform: translateY(-1px);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.75rem 1.08rem;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.91rem;
  line-height: 1.15;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.header-cta:hover,
.btn:hover,
.header-cta:focus-visible,
.btn:focus-visible { transform: translateY(-1px); }

.header-cta,
.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #ffffff;
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: rgba(255,255,255,0.65);
  border: 1px solid rgba(148, 109, 74, 0.32);
  color: var(--accent-dark);
}
.btn-secondary:hover { background: rgba(148, 109, 74, 0.06); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: var(--text);
}

.hero {
  padding: 1.7rem 0 1.45rem;
  scroll-margin-top: calc(var(--header-h) + 14px);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: clamp(1.15rem, 2.25vw, 1.9rem);
  align-items: center;
}
.hero-copy { max-width: 720px; }
.hero-text {
  margin-top: 0.75rem;
  max-width: 58ch;
  font-size: 0.99rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.2rem 0 0.95rem;
}
.hero-actions .btn { min-width: 182px; }

.trust-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.55rem;
  max-width: 60ch;
}
.trust-list li {
  position: relative;
  padding-left: 1.3rem;
  font-weight: 700;
  font-size: 0.92rem;
}
.trust-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}

.hero-contact-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}
.hero-contact-bar > * {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.5rem 0.78rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.8);
  color: var(--text);
  font-weight: 700;
  font-size: 0.86rem;
}

.hero-visuals {
  position: relative;
  min-height: 470px;
}
.hero-card {
  position: absolute;
  overflow: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(230, 221, 211, 0.78);
  background: #ffffff;
  box-shadow: var(--shadow-lg);
}
.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-card-main {
  left: 0;
  right: 6%;
  top: 0;
  height: 240px;
}
.hero-card-secondary {
  left: 9%;
  right: 0;
  bottom: 0;
  height: 240px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
  margin-top: 0.15rem;
}
.project-card {
  min-height: 100%;
  overflow: hidden;
}
.project-card img {
  aspect-ratio: 4 / 2.35;
  object-fit: cover;
}
.project-card-content { padding: 1rem 1rem 1.05rem; }

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 0.1rem;
}
.process-card {
  padding: 1rem;
  overflow: hidden;
}
.process-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  margin-bottom: 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 0.88rem;
}

.about-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 1rem;
  align-items: stretch;
}

.info-card {
  overflow: hidden;
}
.bullet-list {
  margin-top: 0.85rem;
  padding-left: 1.08rem;
}
.bullet-list li + li { margin-top: 0.35rem; }
.contact-list {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.9rem;
}
.contact-list strong { color: var(--text); }
.contact-list a {
  color: var(--accent-dark);
  font-weight: 700;
}
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.site-footer {
  padding: 1rem 0 1.35rem;
  border-top: 1px solid var(--line);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer-note { font-size: 0.88rem; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(148, 109, 74, 0.28);
  outline-offset: 3px;
}

@media (max-width: 1180px) {
  .header-inner { grid-template-columns: auto 1fr auto; }
  .header-cta { display: none; }
  .main-nav { justify-content: flex-end; }
  .hero-grid,
  .about-contact-grid { grid-template-columns: 1fr; }
  .hero-visuals {
    min-height: 430px;
    max-width: 760px;
  }
  .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  :root { --header-h: 66px; }

  .header-inner {
    grid-template-columns: auto 1fr auto;
    min-height: var(--header-h);
  }

  .nav-toggle {
    display: inline-block;
    justify-self: end;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(var(--header-h) + 4px);
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    padding: 0.85rem 1rem;
    background: rgba(250, 248, 244, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open { display: flex; }

  .main-nav a {
    width: 100%;
    padding: 0.28rem 0;
    color: var(--text);
  }

  .hero {
    padding-top: 1.35rem;
  }

  .hero-visuals {
    min-height: auto;
    display: grid;
    gap: 0.75rem;
    max-width: none;
  }

  .hero-card {
    position: relative;
    inset: auto;
    height: auto;
    aspect-ratio: 4 / 2.5;
  }

  .cards-grid,
  .about-contact-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .compact-heading h2 {
    max-width: 100%;
  }

  .content-panel {
    padding: 0.95rem;
  }

  .section-heading,
  .compact-heading {
    padding-inline: 0.05rem;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 1rem), var(--container));
  }

  .logo-text { font-size: 0.88rem; }

  .hero-text,
  p,
  li { font-size: 0.93rem; }

  .hero-actions,
  .contact-actions,
  .hero-contact-bar {
    flex-direction: column;
  }

  .hero-actions .btn,
  .contact-actions .btn,
  .hero-contact-bar > * {
    width: 100%;
    min-width: 0;
  }

  .panel-hero,
  .content-panel,
  .project-card-content,
  .process-card,
  .card-pad {
    padding: 0.95rem;
  }

  .section {
    padding: 1.55rem 0;
  }

  .section-heading,
  .compact-heading {
    margin-bottom: 0.9rem;
  }
}