/* ============================================================
   DESIGN SYSTEM — nathandechaux.fr
   Couleurs : Jaune #FFDE59 · Gris #434343 · Noir #1a1a1a
   Inspiration : kswissformations.com — épuré, premium, whitespace
   ============================================================ */

/* ---- FONT DISPLAY ----------------------------------------- */
@font-face {
  font-family: 'Inter';
  font-display: swap;
}

/* ---- RESET & BASE ----------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  background: #ffffff;
  color: #1a1a1a;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---- VARIABLES -------------------------------------------- */
:root {
  --jaune:      #FFDE59;
  --jaune-dark: #E5C400;
  --gris:       #434343;
  --noir:       #1a1a1a;
  --blanc:      #ffffff;
  --bg-clair:   #F7F7F5;

  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-pill: 50px;

  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.14);

  --transition: 0.25s ease;

  --max-width: 1140px;
  --gap:       2rem;
}

/* ---- TYPOGRAPHIE ------------------------------------------ */
h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.15;
  color: var(--noir);
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.1rem; }

p { font-size: 1.05rem; color: var(--gris); line-height: 1.75; }

.label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gris);
  opacity: 0.6;
}

/* ---- LAYOUT ----------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section--bg {
  background: var(--bg-clair);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

/* ---- NAVIGATION ------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav__logo {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--noir);
}

.nav__logo span { color: var(--jaune-dark); }

.nav__links {
  display: flex;
  gap: 2.5rem;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gris);
  transition: color var(--transition);
}

.nav__links a:hover { color: var(--noir); }
.nav__links a.active { color: var(--noir); border-bottom: 2px solid var(--jaune); padding-bottom: 2px; }

.nav__cta {
  background: var(--noir);
  color: var(--blanc) !important;
  padding: 0.55rem 1.3rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem !important;
  font-weight: 700 !important;
  transition: background var(--transition), transform var(--transition) !important;
}

.nav__cta:hover {
  background: var(--jaune) !important;
  color: var(--noir) !important;
  transform: translateY(-1px);
}

/* Hamburger mobile */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--noir);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- BOUTONS ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

.btn--primary {
  background: var(--jaune);
  color: var(--noir);
  border-color: var(--jaune);
}

.btn--primary:hover {
  background: var(--jaune-dark);
  border-color: var(--jaune-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,222,89,0.4);
}

.btn--dark {
  background: var(--noir);
  color: var(--blanc);
  border-color: var(--noir);
}

.btn--dark:hover {
  background: var(--gris);
  border-color: var(--gris);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--noir);
  border-color: var(--noir);
}

.btn--outline:hover {
  background: var(--noir);
  color: var(--blanc);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 1.1rem 2.6rem;
  font-size: 1.05rem;
}

/* ---- HERO ------------------------------------------------- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: var(--noir);
  color: var(--blanc);
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--noir) 55%, #2d2d2d 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 680px;
}

.hero__eyebrow {
  display: inline-block;
  background: var(--jaune);
  color: var(--noir);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.5rem;
}

.hero h1 {
  color: var(--blanc);
  margin-bottom: 1.5rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--jaune);
}

.hero__sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---- CARDS ------------------------------------------------ */
.card {
  background: var(--blanc);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card--jaune-border {
  border-left: 5px solid var(--jaune);
  border-radius: var(--radius-md);
}

/* ---- MÉTHODE / LISTE -------------------------------------- */
.methode-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.methode-item {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  background: var(--blanc);
  padding: 1.4rem 1.6rem;
  border-radius: var(--radius-md);
  border-left: 5px solid var(--jaune);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-left-width var(--transition);
}

.methode-item:hover {
  transform: translateX(6px);
  border-left-width: 8px;
  box-shadow: var(--shadow-md);
}

.methode-item__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.methode-item p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--noir);
  font-weight: 500;
}

/* ---- SECTION TITRE ---------------------------------------- */
.section__header {
  margin-bottom: 3.5rem;
}

.section__header h2 {
  margin-top: 0.5rem;
}

/* ---- TAG JAUNE -------------------------------------------- */
.tag {
  display: inline-block;
  background: var(--jaune);
  color: var(--noir);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- FORMULAIRE ------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--noir);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.85rem 1rem;
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--noir);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--jaune);
  box-shadow: 0 0 0 4px rgba(255,222,89,0.2);
}

.form-group textarea { min-height: 120px; resize: vertical; }

/* ---- RÉSULTAT CALCULATEUR --------------------------------- */
.result-box {
  background: var(--noir);
  color: var(--blanc);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  margin-top: 1.5rem;
}

.result-box__number {
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 900;
  color: var(--jaune);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.result-box__unit { font-size: 1.2rem; opacity: 0.7; }
.result-box__label { font-size: 0.85rem; opacity: 0.5; margin-top: 0.3rem; }

.result-detail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.result-detail__item {
  background: rgba(255,255,255,0.07);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  text-align: center;
}

.result-detail__item strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--jaune);
}

.result-detail__item span { font-size: 0.8rem; opacity: 0.6; }

/* ---- BLOG CARDS ------------------------------------------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--blanc);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.blog-card__img {
  height: 220px;
  background: var(--bg-clair);
  overflow: hidden;
  position: relative;
}

.blog-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.blog-card:hover .blog-card__img img { transform: scale(1.05); }

.blog-card__meta {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--noir);
  color: var(--jaune);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
}

.blog-card__body {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.8rem;
}

.blog-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--noir);
  line-height: 1.3;
  transition: color var(--transition);
}

.blog-card:hover .blog-card__title { color: var(--jaune-dark); }

.blog-card__excerpt {
  font-size: 0.9rem;
  color: var(--gris);
  line-height: 1.6;
  flex: 1;
}

.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--noir);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--jaune);
  padding-bottom: 2px;
  transition: gap var(--transition);
  width: fit-content;
}

.blog-card__link:hover { gap: 0.7rem; }

/* ---- ARTICLE ---------------------------------------------- */
.article__header {
  max-width: 720px;
  margin: 0 auto;
  padding: 5rem 1.5rem 3rem;
  text-align: center;
}

.article__body {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.article__body p { margin-bottom: 1.5rem; text-align: justify; }
.article__body h2 { margin: 2.5rem 0 1rem; }
.article__body h3 { margin: 2rem 0 0.8rem; }

/* ---- FOOTER ----------------------------------------------- */
.footer {
  background: var(--noir);
  color: rgba(255,255,255,0.5);
  padding: 3rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo {
  font-size: 1rem;
  font-weight: 900;
  color: var(--blanc);
  letter-spacing: -0.02em;
}

.footer__logo span { color: var(--jaune); }

.footer__links {
  display: flex;
  gap: 2rem;
}

.footer__links a {
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--blanc); }

.footer__copy { font-size: 0.8rem; }

/* ---- UTILITAIRES ------------------------------------------ */
.text-center { text-align: center; }
.text-jaune   { color: var(--jaune-dark); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* ---- RESPONSIVE ------------------------------------------- */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .result-detail { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 4rem 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .result-detail { grid-template-columns: 1fr; }
  .hero { min-height: 80vh; }
  .hero__actions { flex-direction: column; }
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .footer__inner { flex-direction: column; text-align: center; }
  .footer__links { flex-wrap: wrap; justify-content: center; }
}

/* ---- MOBILE NAV OPEN -------------------------------------- */
.nav--open .nav__links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 68px;
  left: 0;
  right: 0;
  background: var(--blanc);
  padding: 1.5rem;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  gap: 1.2rem;
  box-shadow: var(--shadow-md);
}

/* ---- LABEL JAUNE (coaching.html) ----------------------- */
.label-jaune {
  display: inline-block;
  color: var(--jaune);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* ---- HERO STATS ---------------------------------------- */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 2.5rem 0;
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
}

.hero-stats strong { color: var(--blanc); font-weight: 700; }

.hero-stats .separator {
  opacity: 0.4;
  margin: 0 0.5rem;
}

/* ---- GRILLES COACHING.HTML ----------------------------- */
.grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 900px) {
  .grid-2x2 { grid-template-columns: 1fr; }
  .grid-3col { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-3col { grid-template-columns: 1fr; }
}

/* ---- STORY BLOCKS -------------------------------------- */
.story-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.story-block-inverse .story-texte { order: -1; }

.story-photo { position: relative; }
.story-texte { flex: 1; }

@media (max-width: 768px) {
  .story-block {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
  }
  .story-block-inverse .story-texte { order: 0; }
}

/* ---- CITATION JAUNE ------------------------------------ */
.citation-jaune {
  border-left: 3px solid var(--jaune);
  padding: 1rem 1.5rem;
  margin: 2rem 0 0;
  font-style: italic;
  background: rgba(255, 222, 89, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.7;
}

.citation-jaune cite {
  display: block;
  margin-top: 0.75rem;
  font-style: normal;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gris);
}

/* ---- FAQ ACCORDION -------------------------------------- */
.faq-item {
  border-bottom: 0.5px solid rgba(0,0,0,0.1);
  padding: 1.25rem 0;
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item p {
  margin-top: 1rem;
  color: var(--gris);
  line-height: 1.7;
}

.faq-chevron {
  transition: transform 0.3s ease;
  flex-shrink: 0;
  stroke: currentColor;
}

details[open] .faq-chevron { transform: rotate(180deg); }

/* ---- TÉMOIGNAGES -------------------------------------- */
.temoignage-card {
  background: var(--bg-clair);
}

.etoiles {
  color: var(--jaune);
  font-size: 1.1rem;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.temoignage-texte {
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
  color: var(--noir);
}

.temoignage-auteur {
  display: flex;
  align-items: center;
  gap: 12px;
}

.temoignage-auteur strong {
  display: block;
  font-weight: 700;
  color: var(--noir);
}

.temoignage-auteur span {
  font-size: 0.85rem;
  color: var(--gris);
}

.avatar-initiales {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--jaune);
  color: var(--noir);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.whatsapp-encart {
  margin-top: 3rem;
  text-align: center;
  background: var(--noir);
  color: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.whatsapp-encart p {
  color: var(--blanc);
  margin-bottom: 1rem;
}

.whatsapp-encart img {
  width: 100%;
  max-width: 600px;
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

/* ---- CTA CARD STICKY ----------------------------------- */
.cta-card-sticky {
  background: var(--noir);
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: var(--blanc);
  position: sticky;
  top: 100px;
}

.cta-card-sticky h3 {
  color: var(--blanc);
  margin-bottom: 1rem;
}

.cta-card-sticky p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.5rem;
}

.cta-card-sticky .btn {
  width: 100%;
  justify-content: center;
}

@media (max-width: 1140px) {
  .cta-card-sticky {
    position: static;
    top: auto;
    margin-top: 2rem;
  }
}

/* ---- TEXTE UTILITAIRES --------------------------------- */
.text-italic { font-style: italic; }
.text-muted { color: var(--gris); }

/* ---- ANIMATIONS ------------------------------------------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up { animation: fadeUp 0.6s ease-out both; }
.fade-up--delay-1 { animation-delay: 0.1s; }
.fade-up--delay-2 { animation-delay: 0.2s; }
.fade-up--delay-3 { animation-delay: 0.3s; }