/* =========================================================
   Matthieu Davoust — Avocat d'affaires et fiscaliste
   Design tokens, layout and components.
   Palette contrast checked against WCAG AA/AAA (see README notes).
   ========================================================= */

:root {
  /* Brand palette — dark navy + gold, from the business card identity */
  --navy:        #1a1d24;
  --navy-alt:    #20232c;
  --navy-deep:   #14161b;
  --navy-line:   rgba(212, 182, 121, 0.16);

  --cream:       #f3efe6;   /* primary text on dark background — ~14.5:1 on --navy */
  --muted:       #b3aea3;   /* secondary text — ~7.2:1 on --navy */
  --gold:        #d4b679;   /* accent: links, labels, rules — ~8.6:1 on --navy */
  --gold-soft:   #b99a5c;   /* decorative-only accent (borders, icons) */
  --error:       #e59a86;   /* form error text — ~7.6:1 on --navy */

  --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --header-h: 88px;
  --container: 1120px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --radius: 2px;
  --transition: 220ms ease;
}

@media (max-width: 640px) {
  :root { --header-h: 68px; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--navy);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
  color: var(--cream);
}
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Visible, high-contrast focus ring everywhere */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 1px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) { outline: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-2);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--space-5);
}
.section-head h2 {
  font-size: clamp(1.8rem, 1.4rem + 1.6vw, 2.5rem);
}

section[id] {
  scroll-margin-top: var(--header-h);
}

/* Visually hidden (skip link target text, honeypot) but still reachable/legible for AT where relevant */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: var(--space-2);
  background: var(--gold);
  color: var(--navy-deep);
  padding: 0.7em 1.2em;
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 1000;
  transition: top var(--transition);
}
.skip-link:focus {
  top: var(--space-2);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  min-height: 48px;
  padding: 0.9em 1.9em;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn-primary {
  background: var(--gold);
  color: var(--navy-deep);
}
.btn-primary:hover { background: #e2c489; }
.btn-ghost {
  background: transparent;
  color: var(--cream);
  border-color: rgba(243, 239, 230, 0.35);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 500;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(26, 29, 36, 0.88);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--navy-line);
  transition: background var(--transition);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--cream);
}
.brand-mark {
  width: 38px;
  height: 38px;
  object-fit: contain;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-text span {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(243, 239, 230, 0.3);
  border-radius: var(--radius);
  color: var(--cream);
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.main-nav a {
  position: relative;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--cream);
  padding-block: 0.4em;
  transition: color var(--transition);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.main-nav a:hover,
.main-nav a:focus-visible { color: var(--gold); }
.main-nav a:hover::after,
.main-nav a:focus-visible::after { transform: scaleX(1); }
.main-nav .nav-cta {
  border: 1px solid var(--gold-soft);
  padding: 0.55em 1.2em;
  border-radius: var(--radius);
}
.main-nav .nav-cta::after { display: none; }
.main-nav .nav-cta:hover { background: var(--gold); color: var(--navy-deep); }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed;
    inset-block-start: var(--header-h);
    inset-inline: 0;
    background: var(--navy-deep);
    border-bottom: 1px solid var(--navy-line);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }
  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-2) 1.5rem var(--space-4);
  }
  .main-nav li { border-bottom: 1px solid var(--navy-line); }
  .main-nav li:last-child { border-bottom: none; margin-top: var(--space-2); }
  .main-nav a { display: block; padding-block: 1em; }
  .main-nav .nav-cta { display: inline-block; text-align: center; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block-start: calc(var(--header-h) + var(--space-6));
  padding-block-end: var(--space-6);
  min-height: 92vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse 60% 50% at 85% 0%, rgba(212, 182, 121, 0.08), transparent),
    var(--navy-alt);
  border-bottom: 1px solid var(--navy-line);
}
.hero-inner { position: relative; z-index: 1; max-width: 44rem; }
.hero-mark {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: var(--space-4);
}
.hero h1 {
  font-size: clamp(2.6rem, 1.9rem + 3vw, 4.2rem);
  letter-spacing: 0.01em;
}
.hero .title {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: var(--space-2);
}
.hero .tagline {
  margin-top: var(--space-4);
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 34rem;
}
.hero-actions {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ---------- Section rhythm ---------- */
.section { padding-block: var(--space-6); }
.section-alt { background: var(--navy-alt); }
.rule {
  width: 56px;
  height: 2px;
  background: var(--gold);
  margin-bottom: var(--space-3);
}

/* ---------- Présentation ---------- */
.presentation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}
.presentation-grid .lede {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--gold);
  font-style: italic;
  line-height: 1.4;
  margin-bottom: var(--space-3);
}
.presentation-grid p { color: var(--muted); font-size: 1.02rem; }
.presentation-grid p strong { color: var(--cream); font-weight: 600; }

.approach-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.approach-item {
  display: flex;
  gap: var(--space-3);
  padding-block: var(--space-2);
  border-top: 1px solid var(--navy-line);
}
.approach-item:first-child { border-top: none; }
.approach-num {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--gold);
  flex-shrink: 0;
  width: 2ch;
}
.approach-item h3 {
  font-size: 1.05rem;
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: 0.3em;
}
.approach-item p { color: var(--muted); font-size: 0.95rem; }

@media (max-width: 860px) {
  .presentation-grid { grid-template-columns: 1fr; gap: var(--space-5); }
}

/* ---------- Domaines d'intervention ---------- */
.domains-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.domain-card {
  background: var(--navy);
  border: 1px solid var(--navy-line);
  border-top: 2px solid var(--gold-soft);
  padding: var(--space-4);
  transition: border-color var(--transition), transform var(--transition);
}
.domain-card:hover {
  border-top-color: var(--gold);
  transform: translateY(-3px);
}
.section-alt .domain-card { background: var(--navy-deep); }
.domain-card h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.7em;
}
.domain-card .plain {
  color: var(--muted);
  font-size: 0.94rem;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: var(--space-6);
  align-items: start;
}
.contact-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6em 1em;
  margin-bottom: var(--space-4);
}
.contact-info dt {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-top: 0.2em;
}
.contact-info dd {
  margin: 0;
  color: var(--cream);
}
.contact-info a { text-decoration: underline; text-decoration-color: var(--gold-soft); text-underline-offset: 3px; }
.contact-info a:hover { color: var(--gold); }

.gdpr-note {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--navy-line);
  background: var(--navy-alt);
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
}
.section-alt .gdpr-note { background: var(--navy-deep); }
.gdpr-note strong { color: var(--cream); }
.gdpr-note a { color: var(--gold); text-decoration: underline; text-underline-offset: 2px; }

/* Form */
.form-field { margin-bottom: var(--space-3); }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.5em;
  color: var(--cream);
}
.form-field .hint {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.35em;
}
.form-field input,
.form-field textarea {
  width: 100%;
  background: var(--navy-deep);
  border: 1px solid rgba(243, 239, 230, 0.22);
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 0.98rem;
  padding: 0.85em 1em;
  border-radius: var(--radius);
  min-height: 48px;
  transition: border-color var(--transition);
}
.form-field textarea { min-height: 140px; resize: vertical; }
.form-field input:hover,
.form-field textarea:hover { border-color: rgba(243, 239, 230, 0.4); }
.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--gold);
  outline: none;
  box-shadow: 0 0 0 3px rgba(212, 182, 121, 0.18);
}
.form-field input[aria-invalid="true"],
.form-field textarea[aria-invalid="true"] {
  border-color: var(--error);
}
.field-error {
  display: block;
  margin-top: 0.45em;
  font-size: 0.82rem;
  color: var(--error);
}
.field-error:empty { display: none; }

.form-summary {
  border: 1px solid var(--error);
  background: rgba(229, 154, 134, 0.08);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}
.form-summary h3 {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--error);
  margin-bottom: 0.5em;
}
.form-summary ul { list-style: disc; padding-left: 1.2em; }
.form-summary a { color: var(--cream); text-decoration: underline; }

.form-status {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-left: 3px solid var(--gold);
  background: var(--navy-alt);
  font-size: 0.92rem;
}
.form-status.is-error { border-left-color: var(--error); }
.section-alt .form-status { background: var(--navy-deep); }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-5); }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  border-top: 1px solid var(--navy-line);
  padding-block: var(--space-4);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: 0.82rem;
  color: var(--muted);
}
.footer-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
}
.footer-links a:hover { color: var(--gold); }

/* ---------- Mentions légales page ---------- */
.legal-page {
  padding-block-start: calc(var(--header-h) + var(--space-5));
  padding-block-end: var(--space-6);
}
.legal-page .container { max-width: 780px; }
.legal-page h1 { font-size: clamp(1.9rem, 1.5rem + 1.4vw, 2.6rem); margin-bottom: var(--space-2); }
.legal-page .back-link {
  display: inline-block;
  margin-bottom: var(--space-4);
  color: var(--gold);
  text-decoration: none;
  font-size: 0.9rem;
}
.legal-page .back-link:hover { text-decoration: underline; }
.legal-page section { margin-block: var(--space-5); }
.legal-page h2 {
  font-size: 1.3rem;
  margin-bottom: var(--space-2);
  color: var(--gold);
}
.legal-page p, .legal-page li { color: var(--muted); }
.legal-page ul { list-style: disc; padding-left: 1.3em; }
.legal-page li { margin-bottom: 0.4em; }
.placeholder {
  color: var(--error);
  font-style: italic;
}