/*
  neurofeedback-bordeaux.com — style.css
  Direction artistique « pierre blonde et fleuve » (design.md).
  Mobile-first. Aucune dépendance externe, aucun framework.
*/

/* ---------- 1. Polices auto-hébergées ---------- */

@font-face {
  font-family: "Fraunces";
  src: url("assets/fonts/fraunces-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("assets/fonts/fraunces-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Sans 3";
  src: url("assets/fonts/source-sans-3-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Source Sans 3";
  src: url("assets/fonts/source-sans-3-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- 2. Tokens ---------- */

:root {
  color-scheme: light dark;

  /* Couleurs — mode clair */
  --color-bg-base:      #F4EFE6;
  --color-bg-alt:        #EBE2D1;
  --color-bg-emphasis:   #1E2A3A;
  --color-bg-deep:        #141C27;

  --color-text-on-base:      #1E2A3A;
  --color-text-on-base-soft: #48566A;
  --color-text-on-dark:      #F4EFE6;
  --color-text-on-dark-soft: #C7C4B6;

  --color-accent:          #C08F55;
  --color-accent-on-light: #805C30;
  --color-water:            #7FA7B8;
  --color-btn-text:          #1E2A3A;

  --color-focus-on-light: #1E2A3A;
  --color-focus-on-dark:   #7FA7B8;

  --color-hero-veil-rgb: 30, 42, 58;

  /* Contexte par défaut (bandes claires) */
  --color-text: var(--color-text-on-base);
  --color-text-soft: var(--color-text-on-base-soft);
  --color-link: var(--color-accent-on-light);
  --color-focus: var(--color-focus-on-light);

  /* Typographie */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Source Sans 3", -apple-system, "Segoe UI", sans-serif;

  --font-weight-display-regular: 600;
  --font-weight-display-bold: 700;
  --font-weight-body-regular: 400;
  --font-weight-body-semibold: 600;

  --font-size-xs:   0.8125rem;
  --font-size-sm:   0.9375rem;
  --font-size-base: 1rem;
  --font-size-md:   1.125rem;
  --font-size-lg:   1.375rem;
  --font-size-xl:   1.75rem;
  --font-size-2xl:  2.25rem;
  --font-size-h1:   clamp(2.25rem, 3.6vw + 1.25rem, 3.25rem);

  --line-height-display: 1.15;
  --line-height-body: 1.6;

  /* Espacement, rayons, mouvement */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;

  --hairline-width: 1px;

  --duration-reveal: 500ms;
  --easing-reveal: cubic-bezier(0.16, 1, 0.3, 1);

  --max-content: 42rem;
  --max-content-wide: 56rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-base:    #1E2A3A;
    --color-bg-alt:      #26374A;
    --color-bg-emphasis: #141C27;
    --color-bg-deep:      #141C27;

    --color-text-on-base:      #F4EFE6;
    --color-text-on-base-soft: #C7C4B6;
    --color-text-on-dark:      #F4EFE6;
    --color-text-on-dark-soft: #C7C4B6;

    --color-accent:          #D3A669;
    --color-accent-on-light: #D3A669;
    --color-water:            #7FA7B8;
    --color-btn-text:          #1E2A3A;

    --color-focus-on-light: #7FA7B8;
    --color-focus-on-dark:   #7FA7B8;

    --color-text: var(--color-text-on-base);
    --color-text-soft: var(--color-text-on-base-soft);
    --color-link: var(--color-accent-on-light);
    --color-focus: var(--color-focus-on-light);
  }
}

@media (prefers-reduced-motion: reduce) {
  :root { --duration-reveal: 0ms; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 3. Reset / base ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg-base);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: var(--font-weight-body-regular);
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, picture { max-width: 100%; height: auto; display: block; }
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-bold);
  line-height: var(--line-height-display);
  margin: 0 0 var(--space-4);
  color: inherit;
}
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--color-link); text-decoration-thickness: 1.5px; text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }

/* ---------- 4. Accessibilité ---------- */

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

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: var(--space-3);
  z-index: 100;
  background: var(--color-bg-emphasis);
  color: var(--color-text-on-dark);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-body-semibold);
  transform: translateY(-150%);
  transition: transform 0.2s var(--easing-reveal);
}
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. En-tête ---------- */

.site-header {
  background: var(--color-bg-base);
  color: var(--color-text-on-base);
  border-bottom: var(--hairline-width) solid var(--color-accent-on-light);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.site-logo {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-regular);
  font-size: var(--font-size-md);
  color: var(--color-text-on-base);
  letter-spacing: 0.01em;
}
.site-nav .tel-link {
  font-weight: var(--font-weight-body-semibold);
}
.tel-link {
  color: var(--color-accent-on-light);
  white-space: nowrap;
}

.section-inner {
  max-width: var(--max-content);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.section-inner:has(> .content-with-media),
.section-inner:has(> .practitioner) {
  max-width: var(--max-content-wide);
}

/* ---------- 6. Boutons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: 0.8em 1.6em;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: var(--font-weight-body-semibold);
  font-size: var(--font-size-base);
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s var(--easing-reveal);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-accent);
  color: var(--color-btn-text);
  border-color: var(--color-accent-on-light);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--color-accent) 88%, var(--color-bg-emphasis) 12%);
}
@media (prefers-color-scheme: dark) {
  .btn-primary { border-color: #A9793E; }
}

.btn-outline {
  background: transparent;
  color: var(--color-text-on-dark);
  border-color: var(--color-text-on-dark);
}
.btn-outline:hover {
  background: rgba(244, 239, 230, 0.12);
}

/* boutons utilisés hors hero (bandes claires) : texte encre sur filet cuivre */
.band-base .btn-outline,
.band-alt .btn-outline {
  color: var(--color-text-on-base);
  border-color: var(--color-accent-on-light);
}
.band-base .btn-outline:hover,
.band-alt .btn-outline:hover {
  background: rgba(128, 92, 48, 0.08);
}

/* ---------- 7. Hero ---------- */

.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 70vh;
  padding-bottom: var(--space-9);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 82%, 0 100%);
  color: var(--color-text-on-dark);
  --color-text-soft: var(--color-text-on-dark-soft);
  --color-link: var(--color-accent);
  --color-focus: var(--color-focus-on-dark);
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media picture,
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(100deg,
      rgba(var(--color-hero-veil-rgb), 0.55) 0%,
      rgba(var(--color-hero-veil-rgb), 0.55) 45%,
      rgba(var(--color-hero-veil-rgb), 0.1) 78%,
      transparent 100%),
    rgba(var(--color-hero-veil-rgb), 0.35);
}
.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 34rem;
  padding-inline: var(--space-5);
  padding-block: var(--space-8) var(--space-6);
}
.hero .badge {
  display: inline-block;
  align-self: flex-start;
  background: rgba(var(--color-hero-veil-rgb), 0.88);
  color: var(--color-text-on-dark);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-body-semibold);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--hairline-width) solid var(--color-accent);
  margin-bottom: var(--space-2);
}
.hero h1 {
  font-size: var(--font-size-h1);
  color: var(--color-text-on-dark);
  text-wrap: balance;
}
.hero h1 em {
  font-style: italic;
  color: var(--color-accent);
}
.hero .motif-wave {
  width: 5rem;
  height: auto;
  color: var(--color-water);
  margin-block: var(--space-1) var(--space-2);
}
.hero-sub {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-regular);
  font-size: var(--font-size-md);
  color: var(--color-text-on-dark);
  max-width: 28rem;
}
.hero-disclaimer {
  font-size: var(--font-size-sm);
  color: var(--color-text-on-dark-soft);
  max-width: 28rem;
}
.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
}
.hero-scroll {
  /* Positionné en flux normal (et non plus en overlay absolu ancré au coin
     bas-gauche de .hero) : la découpe diagonale du hero (clip-path) coupait
     l'indicateur, qui débordait de la zone visible côté droit de la puce
     (coupé en deux sur mobile, à cheval sur le bord en desktop). En flux,
     juste après .hero-content dans la colonne flex de .hero, il reste
     toujours au-dessus de la diagonale. position:relative (sans décalage
     top/left) conserve ce flux tout en permettant le z-index nécessaire
     pour rester au-dessus de .hero-veil. */
  position: relative;
  z-index: 2;
  align-self: flex-start;
  margin-top: 0;
  margin-inline-start: var(--space-3);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(var(--color-hero-veil-rgb), 0.88);
  color: var(--color-text-on-dark);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-body-semibold);
  letter-spacing: 0.02em;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--hairline-width) solid var(--color-accent);
  text-decoration: none;
}
.hero-scroll::after {
  content: "↓";
  display: inline-block;
  color: var(--color-accent);
}
@media (prefers-reduced-motion: no-preference) {
  .hero-scroll::after {
    animation: hero-scroll-bounce 1.8s ease-in-out infinite;
  }
}
@keyframes hero-scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(3px); }
}

/* ---------- 8. Bandes ---------- */

.band-base, .band-alt, .band-emphasis, .band-deep {
  padding-block: var(--space-8);
}
.band-base {
  background: var(--color-bg-base);
  color: var(--color-text-on-base);
  --color-text: var(--color-text-on-base);
  --color-text-soft: var(--color-text-on-base-soft);
  --color-link: var(--color-accent-on-light);
  --color-focus: var(--color-focus-on-light);
}
.band-alt {
  background: var(--color-bg-alt);
  color: var(--color-text-on-base);
  --color-text: var(--color-text-on-base);
  --color-text-soft: var(--color-text-on-base-soft);
  --color-link: var(--color-accent-on-light);
  --color-focus: var(--color-focus-on-light);
}
.band-emphasis {
  background: var(--color-bg-emphasis);
  color: var(--color-text-on-dark);
  --color-text: var(--color-text-on-dark);
  --color-text-soft: var(--color-text-on-dark-soft);
  --color-link: var(--color-accent);
  --color-focus: var(--color-focus-on-dark);
}
.band-deep {
  background: var(--color-bg-deep);
  color: var(--color-text-on-dark);
  --color-text: var(--color-text-on-dark);
  --color-text-soft: var(--color-text-on-dark-soft);
  --color-link: var(--color-accent);
  --color-focus: var(--color-focus-on-dark);
}
.band-base a:not(.btn), .band-alt a:not(.btn), .band-emphasis a:not(.btn), .band-deep a:not(.btn) { color: var(--color-link); }

/* ---------- 9. Motifs SVG ---------- */

.motif { display: block; }
.motif-wave { color: var(--color-water); opacity: 0.6; }
.motif-arch { color: var(--color-accent-on-light); opacity: 0.5; width: 100%; max-width: 22rem; margin-block-end: var(--space-4); }

/* ---------- 10. Section « Qu'est-ce que » : texte + logo ---------- */

.content-with-media { position: relative; }
.logo-neuroptimal {
  max-width: 130px;
  margin: var(--space-5) auto;
}
@media (min-width: 768px) {
  .logo-neuroptimal {
    float: right;
    margin: 0 0 var(--space-4) var(--space-6);
    max-width: 150px;
  }
}

/* ---------- 11. Section « Pourquoi » : raisons ---------- */

.reason-list { display: flex; flex-direction: column; gap: var(--space-5); margin-block: var(--space-5); }
.reason { display: flex; gap: var(--space-4); align-items: flex-start; }
.reason-icon { flex: 0 0 auto; width: 2rem; height: 0.75rem; margin-top: 0.55em; color: var(--color-water); }
.reason p { margin: 0; }

/* ---------- 12. Section « Comment » : étapes ---------- */

.steps-list { display: flex; flex-direction: column; margin-block: var(--space-5); }
.step { display: flex; gap: var(--space-5); position: relative; padding-bottom: var(--space-6); }
.step:last-child { padding-bottom: 0; }
.step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.375rem;
  top: 2.75rem;
  bottom: 0;
  width: var(--hairline-width);
  background: var(--color-accent-on-light);
  opacity: 0.5;
}
.step-number {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-bold);
  font-size: var(--font-size-md);
  color: var(--color-accent-on-light);
  border: var(--hairline-width) solid var(--color-accent-on-light);
  border-radius: var(--radius-md);
}
.step-text { margin: 0; padding-top: var(--space-2); }

/* ---------- 13. Section « Ce que rapportent » : mise en exergue ---------- */

.band-emphasis p:first-of-type {
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-regular);
  font-style: italic;
  font-size: var(--font-size-md);
  position: relative;
  padding-left: var(--space-6);
}
.band-emphasis p:first-of-type::before {
  content: "“";
  position: absolute;
  left: 0;
  top: -0.2em;
  font-family: var(--font-display);
  font-style: normal;
  font-size: 2.25em;
  line-height: 1;
  color: var(--color-accent);
}

/* ---------- 14. Section « Où » : adresse ---------- */

.address-block, .hours-block {
  border-left: 2px solid var(--color-accent-on-light);
  padding-left: var(--space-4);
  margin-block: var(--space-4);
}

/* ---------- 15. Encadré praticienne ---------- */

.practitioner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  align-items: flex-start;
}
.practitioner-badge { flex: 0 0 auto; width: 96px; }
.practitioner-badge img { border-radius: var(--radius-md); }
.practitioner-divider { display: none; }
.practitioner-body p { margin-bottom: var(--space-4); }
@media (min-width: 768px) {
  .practitioner { flex-direction: row; align-items: stretch; gap: var(--space-6); }
  .practitioner-badge { width: 120px; }
  .practitioner-divider {
    display: block;
    flex: 0 0 auto;
    width: var(--hairline-width);
    background: var(--color-accent);
    align-self: stretch;
  }
}

/* ---------- 16. FAQ ---------- */

.faq-list { margin-top: var(--space-5); }
.faq-item {
  border-top: var(--hairline-width) solid var(--color-accent-on-light);
}
.faq-item:last-child { border-bottom: var(--hairline-width) solid var(--color-accent-on-light); }
.faq-toggle {
  appearance: none;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  position: relative;
  cursor: pointer;
  padding: var(--space-4) var(--space-7) var(--space-4) 0;
  font-family: var(--font-display);
  font-weight: var(--font-weight-display-regular);
  font-size: var(--font-size-md);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.faq-toggle::before,
.faq-toggle::after {
  content: "";
  position: absolute;
  right: var(--space-2);
  top: 50%;
  width: 14px;
  height: 2px;
  margin-top: -1px;
  background: var(--color-accent-on-light);
  transform-origin: center;
  transition: transform 0.2s var(--easing-reveal);
}
.faq-toggle::before { transform: rotate(0deg); }
.faq-toggle::after { transform: rotate(90deg); }
.faq-toggle[aria-expanded="true"]::before { transform: rotate(45deg); }
.faq-toggle[aria-expanded="true"]::after { transform: rotate(135deg); }
.faq-item p {
  padding-bottom: var(--space-5);
  color: var(--color-text-soft);
}

/* Accordéons (FAQ, mentions légales) : bouton aria-expanded + <section aria-labelledby>.
   Replié seulement si JavaScript tourne (classe js-acc posée dans le <head>). */
.js-acc [data-accordion] > [aria-expanded="false"] + section { display: none; }

/* ---------- 17. CTA final ---------- */

.cta-final .motif-wave { width: 6rem; margin-inline: 0; margin-bottom: var(--space-4); }
.cta-final-list { display: flex; flex-direction: column; gap: var(--space-4); margin-top: var(--space-5); }
.cta-final-list li { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- 18. Footer ---------- */

.site-footer {
  border-top: 2px solid var(--color-accent);
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-5); }
.footer-disclaimer {
  font-size: var(--font-size-xs);
  color: var(--color-text-on-dark-soft);
  max-width: var(--max-content-wide);
}
.footer-contact {
  font-size: var(--font-size-sm);
  max-width: var(--max-content-wide);
}
.footer-logos { display: flex; align-items: center; gap: var(--space-6); flex-wrap: wrap; }
.footer-logo { max-width: 96px; }
.footer-badge { max-width: 72px; border-radius: var(--radius-md); }
#mentions-legales .legal-toggle {
  appearance: none;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  font-weight: var(--font-weight-body-semibold);
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--color-text-on-dark);
}
#mentions-legales p {
  font-size: var(--font-size-sm);
  color: var(--color-text-on-dark-soft);
  max-width: var(--max-content-wide);
}

/* ---------- 19. Apparition douce au scroll (posée uniquement par script.js) ---------- */

.js-reveal .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-reveal) var(--easing-reveal),
              transform var(--duration-reveal) var(--easing-reveal);
}
.js-reveal .reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .js-reveal .reveal { opacity: 1; transform: none; }
}

/* ---------- 20. Points d'arrêt ---------- */

@media (min-width: 768px) {
  :root {
    --font-size-xl:  2rem;
    --font-size-2xl: 2.75rem;
  }
  .section-inner { padding-inline: var(--space-7); }
  .band-base, .band-alt, .band-emphasis, .band-deep { padding-block: var(--space-9); }
}

@media (min-width: 1024px) {
  .hero { min-height: 90vh; }
  .hero-content { max-width: 54rem; padding-left: var(--space-9); padding-right: var(--space-5); }
  .hero-sub, .hero-disclaimer { max-width: 34rem; }
  .section-inner { padding-inline: var(--space-9); }
  .band-base, .band-alt, .band-emphasis, .band-deep { padding-block: var(--space-10); }
}

@media (min-width: 1024px) {
  :root { --font-size-h1: clamp(2.25rem, 1.4vw + 1.7rem, 2.75rem); }
}