/* ==========================================================================
   Céline Perez — Stratégie & Automatisation IA
   Design system : sobre, professionnel, élégant
   ========================================================================== */

:root {
  /* Couleurs */
  --color-navy: #16213e;
  --color-navy-deep: #0d1526;
  --color-ink: #1c2433;
  --color-paper: #ffffff;
  --color-offwhite: #f7f8fa;
  --color-slate: #5b6472;
  --color-slate-light: #8891a0;
  --color-accent: #0f8f7f;
  --color-accent-dark: #0b6e62;
  --color-accent-soft: #e6f4f2;
  --color-border: #e4e7ec;
  --color-gold: #b08d57;

  /* Typo */
  --font-heading: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Rythme */
  --container-max: 1140px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(22, 33, 62, 0.06), 0 1px 2px rgba(22, 33, 62, 0.04);
  --shadow-md: 0 8px 24px rgba(22, 33, 62, 0.08);
  --shadow-lg: 0 20px 48px rgba(22, 33, 62, 0.12);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.2;
  margin: 0 0 0.6em;
}
p { margin: 0 0 1em; color: var(--color-slate); }
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Utilitaires ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 1em;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
  display: inline-block;
}
.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--offwhite { background: var(--color-offwhite); }
.section--navy {
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-deep) 100%);
  color: #fff;
}
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy p { color: rgba(255,255,255,0.75); }
.section-head {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p { font-size: 1.05rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--ghost {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-border);
}
.btn--ghost:hover { border-color: var(--color-navy); }
.btn--on-navy {
  background: #fff;
  color: var(--color-navy);
}
.btn--on-navy:hover { background: var(--color-accent-soft); transform: translateY(-1px); }
.btn--ghost-on-navy {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.btn--ghost-on-navy:hover { border-color: #fff; }
.btn--block { width: 100%; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand strong {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  color: var(--color-navy);
}
.brand strong em {
  font-style: normal;
  color: var(--color-accent-dark);
}
.brand span {
  font-size: 0.72rem;
  color: var(--color-slate);
  letter-spacing: 0.03em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links {
  display: flex;
  gap: 28px;
  font-size: 0.94rem;
  font-weight: 500;
}
.nav__links a {
  color: var(--color-slate);
  transition: color 0.15s ease;
  position: relative;
}
.nav__links a:hover { color: var(--color-navy); }
.nav__toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-navy);
  position: relative;
  transition: background 0.2s ease;
}
.nav__toggle span::before, .nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-navy);
  transition: transform 0.2s ease, top 0.2s ease;
}
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after { top: 7px; }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 96px;
  background:
    radial-gradient(1100px 480px at 85% -10%, rgba(15,143,127,0.14), transparent 60%),
    linear-gradient(180deg, var(--color-offwhite) 0%, #fff 70%);
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  margin-bottom: 0.5em;
}
.hero__promise {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-navy);
  max-width: 54ch;
  margin-bottom: 0.9em;
}
.hero__promise strong { color: var(--color-accent-dark); }
.hero__lead {
  font-size: 1.15rem;
  color: var(--color-slate);
  max-width: 52ch;
}
.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.hero__card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px;
}
.hero__card h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-slate);
  margin-bottom: 20px;
}
.approach-list { display: grid; gap: 20px; }
.approach-item {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}
.approach-item:last-child { border-bottom: none; padding-bottom: 0; }
.approach-item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 6px;
}
.approach-item span { font-size: 0.92rem; color: var(--color-slate); }

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent-dark);
}
.service-card h3 { font-size: 1.25rem; margin-bottom: 0.5em; }
.service-card p { font-size: 0.96rem; flex-grow: 1; }
.service-card__for {
  font-size: 0.82rem;
  color: var(--color-slate-light);
  margin: 4px 0 18px;
}
.service-card__link {
  font-weight: 600;
  color: var(--color-accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
}
.service-card__link:hover { color: var(--color-navy); }

/* ---------- Pourquoi moi (bio) ---------- */
.bio-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 56px;
  align-items: start;
}
.bio-role {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  margin-bottom: 1.2em;
}
.bio-lead {
  font-size: 1.1rem;
  color: var(--color-navy);
  font-weight: 500;
}
.bio-main p { font-size: 0.98rem; }

.bio-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: sticky;
  top: 96px;
}
.bio-card h3 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-slate);
  margin-bottom: 16px;
}
.bio-card h3:not(:first-child) { margin-top: 28px; }
.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}
.expertise-tags .tag {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}
.formation-list { display: grid; gap: 14px; }
.formation-list li { display: flex; flex-direction: column; }
.formation-list strong { font-size: 0.92rem; color: var(--color-navy); }
.formation-list span { font-size: 0.84rem; color: var(--color-slate-light); }
.bio-card .btn { margin-top: 28px; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.kpi-card {
  background: var(--color-navy);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.kpi-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.1rem;
  margin-bottom: 4px;
}
.kpi-card span { font-size: 0.85rem; color: rgba(255,255,255,0.72); }
.kpi-card--accent { background: var(--color-accent); }

.ai-callout {
  margin-top: 24px;
  background: var(--color-accent-soft);
  border: 1px solid rgba(15,143,127,0.25);
  border-radius: var(--radius);
  padding: 20px 22px;
  font-size: 0.92rem;
  color: var(--color-navy);
}
.ai-callout strong { color: var(--color-accent-dark); }

/* ---------- Témoignages ---------- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}
.testimonial-card__quote {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 20px;
}
.testimonial-card__author { display: flex; align-items: center; gap: 12px; }
.testimonial-card__avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-offwhite);
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--color-slate-light);
}
.testimonial-card__author strong { display: block; font-size: 0.92rem; color: var(--color-navy); }
.testimonial-card__author span { font-size: 0.8rem; color: var(--color-slate-light); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-panel h3 { font-size: 1.15rem; }
.form-row { margin-bottom: 18px; }
.form-row label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 6px;
}
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--color-offwhite);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
}
.form-note { font-size: 0.8rem; color: var(--color-slate-light); margin-top: 12px; }
.form-success {
  display: none;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 18px;
}
.form-success.is-visible { display: block; }

.contact-direct-box {
  background: var(--color-navy);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100%;
}
.contact-direct-box h3 { color: #fff; font-size: 1.15rem; }
.contact-direct-box p { color: rgba(255,255,255,0.75); }
.contact-info { margin-top: auto; display: grid; gap: 10px; font-size: 0.9rem; }
.contact-info a { color: #fff; }
.contact-info a:hover { color: var(--color-accent-soft); }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 14px; max-width: 760px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 6px 22px;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 600;
  color: var(--color-navy);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--color-accent);
  flex: none;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding-bottom: 18px; margin: 0; }

/* ---------- Page intérieure (services dédiés) ---------- */
.page-hero {
  padding: 64px 0 32px;
  background: linear-gradient(180deg, var(--color-offwhite) 0%, #fff 100%);
}
.page-hero + .section { padding-top: 48px; }
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-slate-light);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--color-accent-dark); }
.page-hero h1 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); max-width: 780px; }
.page-hero__lead { font-size: 1.08rem; max-width: 700px; }

.content-block { max-width: 760px; margin: 0 auto; }
.content-block h2 { font-size: 1.5rem; margin-top: 1.6em; }
.content-block h2:first-child { margin-top: 0; }
.content-block ul { margin: 0 0 1.2em; display: grid; gap: 10px; }
.content-block ul li {
  padding-left: 26px;
  position: relative;
  color: var(--color-slate);
}
.content-block ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.process-steps {
  display: grid;
  gap: 18px;
  counter-reset: step;
}
.process-step {
  display: flex;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.process-step__num {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
}
.process-step h4 { margin-bottom: 0.3em; font-size: 1.02rem; }
.process-step p { margin: 0; font-size: 0.94rem; }

.for-whom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
}
.for-whom-card {
  background: var(--color-offwhite);
  border-radius: var(--radius);
  padding: 22px;
  font-size: 0.92rem;
}

/* ---------- Secteurs d'intervention ---------- */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.sector-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: var(--color-offwhite);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-navy);
}
.sector-item svg { flex: none; color: var(--color-accent); }
.for-whom-card strong { display: block; color: var(--color-navy); margin-bottom: 6px; font-size: 0.96rem; }

.cta-banner {
  background: var(--color-navy);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  color: #fff;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255,255,255,0.75); max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-banner .btn { margin-top: 12px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-deep);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand strong {
  font-family: var(--font-heading);
  color: #fff;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 10px;
}
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.88rem; max-width: 32ch; }
.footer-col h5 {
  color: #fff;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.footer-col ul { display: grid; gap: 10px; font-size: 0.9rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Mentions légales / confidentialité ---------- */
.legal-content { max-width: 780px; margin: 0 auto; padding: 56px 0 96px; }
.legal-content h1 { font-size: 1.9rem; }
.legal-content h2 { font-size: 1.2rem; margin-top: 1.8em; }
.legal-content p, .legal-content li { color: var(--color-slate); }
.legal-content ul { display: grid; gap: 8px; padding-left: 20px; list-style: disc; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .sectors-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .bio-grid { grid-template-columns: 1fr; gap: 40px; }
  .bio-card { position: static; }
  .services-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .for-whom-grid { grid-template-columns: 1fr; }
  .sectors-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav__links {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
  }
  .nav__links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav__links a { padding: 12px 0; border-bottom: 1px solid var(--color-border); }
  .nav__links a:last-child { border-bottom: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .kpi-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 64px; }
  .hero__actions .btn { width: 100%; }
}