/* EDEC Fiduciaire — administratif premium
   Mobile-first, breakpoint unique 768px */

:root {
  /* Bleu marine encré — signature institutionnelle */
  --primary: #0e3147;
  --primary-dark: #07202f;
  --primary-soft: #1e4a66;

  /* Blanc neutre froid — signal contemporain */
  --bg: #f4f6f7;
  --bg-alt: #e8ecf0;
  --surface: #ffffff;

  /* Bleu médium — accent lagon, 2e ton du primary */
  --accent: #4a7fa5;
  --accent-dark: #376690;

  /* Encre bleutée — typographie pro */
  --text: #1b2230;
  --text-muted: #62707e;

  /* Bleu-gris doux */
  --border: #d1d8e0;

  --font-serif: "Fraunces", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;

  --maxw: 1120px;
  --pad-x: 1.25rem;
  --radius: 4px;
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
a:hover {
  color: var(--primary-dark);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: var(--bg);
  padding: 0.75rem 1rem;
  text-decoration: none;
  z-index: 100;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* Typography */
h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--primary);
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(2rem, 5.5vw, 3.25rem);
  line-height: 1.15;
  font-weight: 400;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  line-height: 1.25;
  position: relative;
  padding-bottom: 0.75rem;
}
h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 1px;
  background: var(--accent);
}

h3 {
  font-size: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--primary);
}

p {
  margin: 0 0 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 246, 247, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--primary);
  font-family: var(--font-serif);
}
.brand-mark {
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
}
.brand-name {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-style: italic;
}

.primary-nav {
  display: none;
  gap: 2rem;
}
.primary-nav a {
  text-decoration: none;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
}
.primary-nav a:hover {
  color: var(--primary);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  transition:
    transform var(--transition),
    opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  padding: 0.5rem var(--pad-x) 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.mobile-nav a {
  padding: 0.75rem 0;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:last-child {
  border-bottom: 0;
}

/* Sections */
.section {
  padding: 4rem 0;
  background: var(--bg);
}
.section-alt {
  background: var(--bg-alt);
}

.section-head {
  margin-bottom: 2.5rem;
}
.section-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 60ch;
}

.prose {
  max-width: 65ch;
}
.prose p {
  color: var(--text);
}

/* Hero */
.section-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: 5rem 0 3rem;
  background:
    linear-gradient(
      105deg,
      rgba(14, 49, 71, 0.88) 0%,
      rgba(14, 49, 71, 0.65) 50%,
      rgba(14, 49, 71, 0.3) 100%
    ),
    url("https://images.unsplash.com/photo-1706461168280-da6986cd91ec?w=1800&q=80&auto=format&fit=crop")
      center / cover no-repeat;
}

.hero-grid {
  width: 100%;
}
.hero-content {
  max-width: 720px;
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
  font-weight: 500;
}

.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 56ch;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* Hero photo — overrides sur fond sombre */
.section-hero .eyebrow {
  color: rgba(255, 255, 255, 0.65);
}
.section-hero .hero-content h1 {
  color: #ffffff;
}
.section-hero .lede {
  color: rgba(255, 255, 255, 0.82);
}
.section-hero .btn-primary {
  background: #ffffff;
  color: var(--primary);
  border-color: #ffffff;
}
.section-hero .btn-primary:hover {
  background: var(--bg);
  color: var(--primary-dark);
  border-color: var(--bg);
}
.section-hero .btn-ghost {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.55);
}
.section-hero .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.85);
  color: #ffffff;
}
.photo-credit {
  position: absolute;
  bottom: 1rem;
  right: 1.25rem;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color var(--transition);
}
.photo-credit:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition);
  line-height: 1.2;
}
.btn-primary {
  background: var(--primary);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--bg);
}
.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-ghost:hover {
  background: var(--primary);
  color: var(--bg);
}

/* Badges */
.badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}
.badge {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Services list */
.services-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.service-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1.5rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--border);
}
.service-item:last-child {
  border-bottom: 1px solid var(--border);
}
.service-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.service-body h3 {
  margin-top: 0.2rem;
  margin-bottom: 0.5rem;
}
.service-body p {
  color: var(--text-muted);
  margin: 0;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.contact-form .field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}
.contact-form label {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.7rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 49, 71, 0.14);
}
.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}
.hp {
  position: absolute;
  left: -9999px;
}

.contact-form .btn {
  margin-top: 0.5rem;
}
.form-status {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  min-height: 1.5em;
}
.form-status.is-success {
  color: #1c6e3a;
}
.form-status.is-error {
  color: #a23030;
}
.form-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.info-list {
  margin: 0 0 1.5rem;
  display: grid;
  gap: 1.25rem;
}
.info-list > div {
  display: block;
}
.info-list dt {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.info-list dd {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
}

.map {
  height: 300px;
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: var(--bg);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
  line-height: 1.6;
}
.site-footer p {
  margin: 0 0 0.4rem;
}
.site-footer a {
  color: var(--bg);
}
.site-footer a:hover {
  color: var(--accent);
}
.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.6rem !important;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
}

/* Fade-up animation */
.fade-up {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Desktop */
@media (min-width: 768px) {
  body {
    font-size: 17px;
  }
  .container {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .primary-nav {
    display: inline-flex;
  }
  .nav-toggle {
    display: none;
  }
  .mobile-nav {
    display: none !important;
  }

  .section {
    padding: 6rem 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
  }
  .section > .container {
    width: 100%;
  }
  .section-hero {
    padding: 7rem 0 5rem;
    min-height: 90vh;
  }

  .hero-cta {
    gap: 1rem;
  }

  .service-item {
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    padding: 2rem 0;
  }
  .service-num {
    font-size: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 4rem;
    align-items: start;
  }
  .map {
    height: 400px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1.5fr 1fr;
    gap: 3rem;
  }
  .footer-legal {
    border-top: 0;
    padding-top: 0;
    text-align: right;
  }
}