/* =============================================================
   SYMBIAL2 — Feuille de style commune
   Direction visuelle : inspiration Axantage / SML
   Palette : marine profond + accent or + brique pour CTA
   Philosophie : sobriété, aération, conversion
   ============================================================= */

:root {
  /* Palette */
  --c-navy: #0F2447;
  --c-navy-dark: #081530;
  --c-navy-light: #1F3864;
  --c-gold: #C9A227;
  --c-gold-light: #F4E9C1;
  --c-brick: #B85042;
  --c-brick-dark: #8B3A2F;
  --c-ink: #1A1A1A;
  --c-grey-1: #F7F7F5;
  --c-grey-2: #E6E6E0;
  --c-grey-3: #8B8B85;
  --c-grey-4: #4A4A45;
  --c-white: #FFFFFF;

  /* Typographie */
  --f-serif: 'Playfair Display', 'Georgia', 'Times New Roman', serif;
  --f-sans: 'Inter', 'Helvetica Neue', 'Arial', sans-serif;

  /* Mise en page */
  --max-w: 1180px;
  --max-prose: 720px;
  --gap-xs: .5rem;
  --gap-sm: 1rem;
  --gap-md: 2rem;
  --gap-lg: 4rem;
  --gap-xl: 6rem;
  --radius: 4px;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(15,36,71,.06);
  --shadow-md: 0 4px 12px rgba(15,36,71,.08);
  --shadow-lg: 0 10px 30px rgba(15,36,71,.12);
}

/* ----- Reset léger ----- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--c-ink);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-navy); text-decoration: none; transition: color .15s; }
a:hover { color: var(--c-brick); }
button { font-family: inherit; cursor: pointer; }

/* ----- Typographie ----- */
h1, h2, h3, h4 {
  font-family: var(--f-serif);
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: -.015em;
  line-height: 1.2;
  margin: 0 0 .8em;
}
h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; font-family: var(--f-sans); font-weight: 600; }
p { margin: 0 0 1.2em; }
.eyebrow {
  font-family: var(--f-sans);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: .8rem;
}
.lead {
  font-size: 1.2rem;
  color: var(--c-grey-4);
  line-height: 1.55;
  max-width: 640px;
}

/* ----- Conteneurs ----- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.prose { max-width: var(--max-prose); }
.section { padding: var(--gap-xl) 0; }
.section--tight { padding: var(--gap-lg) 0; }
.section--navy { background: var(--c-navy); color: var(--c-white); }
.section--navy h1, .section--navy h2, .section--navy h3 { color: var(--c-white); }
.section--grey { background: var(--c-grey-1); }

/* ----- Boutons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .9rem 1.6rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: all .15s ease;
  text-decoration: none;
  cursor: pointer;
}
.btn--primary {
  background: var(--c-brick);
  color: var(--c-white);
  border-color: var(--c-brick);
}
.btn--primary:hover {
  background: var(--c-brick-dark);
  border-color: var(--c-brick-dark);
  color: var(--c-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--secondary {
  background: transparent;
  color: var(--c-navy);
  border-color: var(--c-navy);
}
.btn--secondary:hover {
  background: var(--c-navy);
  color: var(--c-white);
}
.btn--gold {
  background: var(--c-gold);
  color: var(--c-navy-dark);
  border-color: var(--c-gold);
}
.btn--gold:hover { background: #B8941E; border-color: #B8941E; color: var(--c-navy-dark); }
.btn--ghost-light {
  background: transparent;
  color: var(--c-white);
  border-color: var(--c-white);
}
.btn--ghost-light:hover { background: var(--c-white); color: var(--c-navy); }

/* ----- Header / Navigation ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--c-grey-2);
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 2rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--c-navy);
}
.brand__dot {
  width: 10px; height: 10px;
  background: var(--c-gold);
  border-radius: 50%;
  display: inline-block;
}
.nav { display: flex; gap: 1.8rem; align-items: center; }
.nav > a, .nav > .nav-item > a {
  font-size: .92rem;
  font-weight: 500;
  color: var(--c-grey-4);
  padding: 1.2rem 0;
  position: relative;
  display: inline-block;
}
.nav > a:hover, .nav > .nav-item > a:hover { color: var(--c-navy); }
.nav > a.active, .nav > .nav-item > a.active { color: var(--c-navy); font-weight: 600; }
.nav > a.active::after, .nav > .nav-item > a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -.2rem;
  height: 2px;
  background: var(--c-gold);
}
.nav__cta { margin-left: auto; }

/* Mega-menus */
.nav-item {
  position: relative;
}
.nav-item > a::after {
  content: ' ▾';
  font-size: .65rem;
  color: var(--c-grey-3);
  margin-left: .15rem;
  transition: transform .15s;
  display: inline-block;
}
.nav-item:hover > a::after,
.nav-item:focus-within > a::after {
  transform: rotate(180deg);
}
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--c-white);
  border: 1px solid var(--c-grey-2);
  border-top: 3px solid var(--c-gold);
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(15,36,71,.12);
  padding: 1rem 0;
  min-width: 280px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s;
  z-index: 100;
}
.nav-item:hover > .nav-dropdown,
.nav-item:focus-within > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: .5rem 1.4rem;
  font-size: .92rem;
  font-weight: 500;
  color: var(--c-grey-4);
  transition: all .12s;
  border-left: 3px solid transparent;
}
.nav-dropdown a:hover {
  background: var(--c-grey-1);
  color: var(--c-navy);
  border-left-color: var(--c-gold);
}
.nav-dropdown a.active { color: var(--c-navy); font-weight: 600; }
.nav-dropdown__title {
  padding: 0 1.4rem .4rem;
  font-size: .7rem;
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.nav-dropdown__sep {
  height: 1px;
  background: var(--c-grey-2);
  margin: .5rem 1.4rem;
}
/* Mega-menu : 2 colonnes pour Méthodes/Secteurs */
.nav-dropdown--wide {
  min-width: 520px;
  padding: 1.2rem 0;
}
.nav-dropdown--wide .nav-dropdown__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1rem;
}

/* ----- HERO ----- */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-dark) 100%);
  color: var(--c-white);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 40%;
  background: radial-gradient(circle at 60% 30%, rgba(201,162,39,.15), transparent 60%);
  pointer-events: none;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
}
.hero h1 {
  color: var(--c-white);
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.2rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--c-gold);
}
.hero__sub {
  font-size: 1.2rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 2rem;
  max-width: 540px;
}
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero__metas {
  display: flex;
  gap: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 2rem;
  flex-wrap: wrap;
}
.hero__meta { display: flex; flex-direction: column; }
.hero__meta-value { font-family: var(--f-serif); font-size: 2rem; font-weight: 700; color: var(--c-gold); }
.hero__meta-label { font-size: .85rem; color: rgba(255,255,255,.7); }

.hero__card {
  background: var(--c-white);
  color: var(--c-ink);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border-top: 4px solid var(--c-gold);
}
.hero__card h3 { color: var(--c-navy); margin-bottom: .8rem; }

/* ----- Cards / Grilles ----- */
.grid { display: grid; gap: 2rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--c-white);
  border: 1px solid var(--c-grey-2);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all .2s ease;
}
.card:hover {
  border-color: var(--c-gold);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card h3 { margin-bottom: .6rem; }
.card a.card__link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-weight: 600;
  margin-top: .8rem;
  color: var(--c-brick);
}
.card a.card__link::after { content: '→'; transition: transform .15s; }
.card:hover a.card__link::after { transform: translateX(3px); }

/* ----- Proof / chiffres ----- */
.proof-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.proof {
  text-align: center;
  padding: 1.5rem 1rem;
  border-top: 3px solid var(--c-gold);
}
.proof__value {
  font-family: var(--f-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1;
}
.proof__label {
  font-size: .9rem;
  color: var(--c-grey-4);
  margin-top: .5rem;
}

/* ----- FAQ accordéon ----- */
.faq { max-width: 820px; margin: 0 auto; }
.faq__item {
  border-bottom: 1px solid var(--c-grey-2);
}
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.2rem 0;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--c-navy);
  position: relative;
  padding-right: 2rem;
  transition: color .15s;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--c-gold);
  transition: transform .15s;
}
.faq__item[open] summary::after { content: '−'; }
.faq__item summary:hover { color: var(--c-brick); }
.faq__answer {
  padding: 0 0 1.5rem;
  color: var(--c-grey-4);
  max-width: 720px;
}
.faq__answer p:last-child { margin-bottom: 0; }

/* ----- Bandeau contact (modèle SML) ----- */
.contact-bar {
  background: var(--c-grey-1);
  border-left: 4px solid var(--c-gold);
  padding: 2rem;
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 1.5rem;
  align-items: center;
}
.contact-bar__avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--c-navy);
  color: var(--c-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-serif);
  font-size: 1.8rem;
  font-weight: 700;
}
.contact-bar__title { font-weight: 700; color: var(--c-navy); margin: 0 0 .3rem; }
.contact-bar__sub { font-size: .92rem; color: var(--c-grey-4); margin: 0; }
.contact-bar__phone {
  font-family: var(--f-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-brick);
}

/* ----- Formulaire ----- */
.form-wrap {
  background: var(--c-white);
  padding: 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--c-grey-2);
  box-shadow: var(--shadow-md);
}
.form-row { margin-bottom: 1.2rem; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-label {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--c-navy);
  margin-bottom: .4rem;
}
.form-label .required { color: var(--c-brick); }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: .8rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--c-ink);
  background: var(--c-white);
  border: 1.5px solid var(--c-grey-2);
  border-radius: var(--radius);
  transition: border-color .15s, box-shadow .15s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(201,162,39,.15);
}
.form-textarea { min-height: 130px; resize: vertical; }
.form-help { font-size: .82rem; color: var(--c-grey-3); margin-top: .3rem; }
.form-check {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
  font-size: .9rem;
  color: var(--c-grey-4);
}
.form-check input { margin-top: .3rem; }
.form-submit { width: 100%; padding: 1.1rem; font-size: 1.05rem; margin-top: 1.5rem; }

/* ----- Témoignages / logos ----- */
.logos {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem 3.5rem;
  justify-content: center;
  align-items: center;
  opacity: .65;
}
.logos span {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-grey-4);
  letter-spacing: .03em;
}

/* ----- Footer ----- */
.site-footer {
  background: var(--c-navy-dark);
  color: rgba(255,255,255,.75);
  padding: 4rem 0 2rem;
}
.site-footer h4 {
  color: var(--c-gold);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  font-family: var(--f-sans);
}
.site-footer a { color: rgba(255,255,255,.75); display: block; padding: .2rem 0; font-size: .92rem; }
.site-footer a:hover { color: var(--c-gold); }
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__brand p { font-size: .92rem; max-width: 320px; line-height: 1.6; }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 1.5rem;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ----- Fil d'Ariane ----- */
.breadcrumb {
  padding: 1.2rem 0;
  font-size: .85rem;
  color: var(--c-grey-3);
  border-bottom: 1px solid var(--c-grey-2);
}
.breadcrumb a { color: var(--c-grey-4); }
.breadcrumb a:hover { color: var(--c-navy); }
.breadcrumb__sep { margin: 0 .5rem; color: var(--c-grey-3); }

/* ----- Page service ----- */
.page-hero {
  background: var(--c-grey-1);
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--c-grey-2);
}
.page-hero__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  align-items: start;
}
.page-hero h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
.page-hero .lead { margin-bottom: 1.5rem; }

/* ----- Liste avec puces or ----- */
.bullets { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.bullets li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: .8rem;
  color: var(--c-ink);
}
.bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .7em;
  width: 8px;
  height: 2px;
  background: var(--c-gold);
}

/* ----- Responsive ----- */
@media (max-width: 900px) {
  .hero__grid, .page-hero__grid { grid-template-columns: 1fr; gap: 2rem; }
  .grid-3, .grid-4, .proof-row { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .nav { display: none; }
  .form-row-2 { grid-template-columns: 1fr; }
  .contact-bar { grid-template-columns: 60px 1fr; }
  .contact-bar__avatar { width: 60px; height: 60px; font-size: 1.4rem; }
  .contact-bar__phone { grid-column: 1 / -1; text-align: center; padding-top: .5rem; border-top: 1px solid var(--c-grey-2); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4, .proof-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .section, .hero { padding: 3rem 0; }
  .hero__metas { gap: 1.5rem; }
}