/* ============================================================
   COSY SCULPT — Feuille de style principale
   Organisation :
     1.  Variables (couleurs, typo, espacements)
     2.  Reset & base
     3.  Typographie
     4.  Layout & utilitaires
     5.  Boutons
     6.  Navigation
     7.  Hero
     8.  Mantra
     9.  Sections génériques
     10. Méthode (piliers)
     11. Pour qui (personas + différenciation)
     12. Expérience (timeline)
     13. Tarifs
     14. Infos pratiques
     15. Univers DS Cosy Art
     16. Contact
     17. Footer
     18. Animations (fade-in)
     19. Responsive
   ============================================================ */


/* ------------------------------------------------------------
   1. VARIABLES
   ------------------------------------------------------------ */
:root {
  /* Palette */
  --color-bg: #FAF7F2;            /* crème sable très clair */
  --color-bg-alt: #F0E9DD;        /* sable doux */
  --color-accent: #B8956A;        /* doré chaud / camel */
  --color-accent-soft: #C9A983;   /* version plus douce du doré */
  --color-sage: #8B9A7B;          /* vert sauge doux */
  --color-text: #2C2620;          /* presque noir, chaud */
  --color-text-soft: #6B5D4F;     /* brun doux */
  --color-white: #FFFFFF;
  --color-whatsapp: #25D366;

  /* Typographie */
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Espacements (échelle modulaire) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Mise en page */
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --transition: 0.3s ease;

  /* Ombres */
  --shadow-soft: 0 4px 20px rgba(44, 38, 32, 0.06);
  --shadow-medium: 0 8px 30px rgba(44, 38, 32, 0.1);
}


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

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

body {
  font-family: var(--font-sans);
  font-weight: 300;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul, ol {
  list-style: none;
}


/* ------------------------------------------------------------
   3. TYPOGRAPHIE
   ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}

h3 {
  font-size: 1.4rem;
  font-weight: 500;
}

h4 {
  font-size: 1.1rem;
  font-weight: 500;
}

p {
  font-weight: 300;
  color: var(--color-text-soft);
}

em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent);
}

/* Surtitre uppercase utilisé dans toutes les sections */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}


/* ------------------------------------------------------------
   4. LAYOUT & UTILITAIRES
   ------------------------------------------------------------ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
}

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

.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section__title {
  margin-bottom: var(--space-md);
}

.section__lead {
  font-size: 1.125rem;
  color: var(--color-text-soft);
}


/* ------------------------------------------------------------
   5. BOUTONS
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn--whatsapp {
  background-color: var(--color-whatsapp);
  color: var(--color-white);
}

.btn--whatsapp:hover {
  background-color: #1ea952;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn--small {
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
}

.btn--large {
  padding: 1.1rem 2.25rem;
  font-size: 1rem;
}


/* ------------------------------------------------------------
   6. NAVIGATION
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background-color: transparent;
  transition: background-color var(--transition), box-shadow var(--transition), padding var(--transition);
}

/* État scrollé : fond crème + ombre légère */
.nav--scrolled {
  background-color: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-soft);
  padding: var(--space-sm) 0;
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: inline-block;
}

.nav__logo-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.6rem;
  color: var(--color-text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-text);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link:hover {
  color: var(--color-accent);
}

/* Burger mobile */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav__burger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
  border-radius: 2px;
}

.nav__burger.is-open span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.nav__burger.is-open span:nth-child(2) {
  opacity: 0;
}

.nav__burger.is-open span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* Menu mobile plein écran */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-bg);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.mobile-menu.is-open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__link {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-text);
}

.mobile-menu__link:hover {
  color: var(--color-accent);
}


/* ------------------------------------------------------------
   7. HERO
   ------------------------------------------------------------ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--space-3xl) + 2rem) 0 var(--space-2xl);
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__title {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.hero__title em {
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
  font-weight: 300;
}

.hero__tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.05em;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.hero__link-secondary {
  font-size: 0.95rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-text);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
}

.hero__link-secondary:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.hero__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

/* Placeholder en attendant les vraies images */
.image-placeholder {
  width: 100%;
  background: linear-gradient(135deg, var(--color-bg-alt), var(--color-accent-soft));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 0.9rem;
  text-align: center;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
}

.image-placeholder--hero {
  aspect-ratio: 4 / 5;
}

.image-placeholder--art {
  aspect-ratio: 4 / 3;
}


/* ------------------------------------------------------------
   8. MANTRA
   ------------------------------------------------------------ */
.mantra {
  padding: var(--space-2xl) 0;
  text-align: center;
  background-color: var(--color-bg-alt);
  border-top: 1px solid rgba(184, 149, 106, 0.15);
  border-bottom: 1px solid rgba(184, 149, 106, 0.15);
}

.mantra__text {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  color: var(--color-text);
  line-height: 1.4;
  margin: var(--space-md) auto;
  max-width: 800px;
}

.mantra__sub {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  margin-top: var(--space-md);
}


/* ------------------------------------------------------------
   10. MÉTHODE — Piliers
   ------------------------------------------------------------ */
.piliers {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.pilier {
  background-color: var(--color-white);
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.pilier:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.pilier__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 300;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.pilier__title {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.pilier__text {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}


/* ------------------------------------------------------------
   11. POUR QUI — Personas + Différenciation
   ------------------------------------------------------------ */
.personas {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.persona {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.persona__title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.persona p {
  font-size: 1rem;
  line-height: 1.7;
}

.differenciation {
  background-color: var(--color-bg);
  border: 1px solid var(--color-accent-soft);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.differenciation__text {
  font-size: 1.1rem;
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.differenciation__highlight {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
}

.differenciation__highlight em {
  display: block;
  margin-top: var(--space-xs);
}


/* ------------------------------------------------------------
   12. EXPÉRIENCE — Timeline
   ------------------------------------------------------------ */
.timeline {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-accent), transparent);
}

.timeline__item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  position: relative;
}

.timeline__num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  z-index: 1;
}

.timeline__content {
  flex: 1;
  padding-top: 0.4rem;
}

.timeline__content h3 {
  font-size: 1.25rem;
  margin-bottom: 0.4rem;
}

.timeline__content p {
  font-size: 1rem;
}


/* ------------------------------------------------------------
   13. TARIFS
   ------------------------------------------------------------ */
.tarifs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.tarif {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}

.tarif:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
}

.tarif--featured {
  border: 2px solid var(--color-accent);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-bg) 100%);
}

.tarif__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  white-space: nowrap;
}

.tarif__title {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.tarif__desc {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin-bottom: var(--space-md);
}

.tarif__price {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--color-accent);
  line-height: 1;
}

.tarif__price span {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  font-family: var(--font-sans);
  font-weight: 300;
  margin-left: 0.25rem;
}

.tarifs__note {
  text-align: center;
  font-size: 0.95rem;
  color: var(--color-text-soft);
  max-width: 600px;
  margin: var(--space-lg) auto;
  font-style: italic;
}

.tarifs__cta {
  text-align: center;
  margin-top: var(--space-lg);
}


/* ------------------------------------------------------------
   14. INFOS PRATIQUES
   ------------------------------------------------------------ */
.infos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.info-card {
  text-align: center;
  padding: var(--space-lg);
}

.info-card__title {
  font-size: 1.3rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.info-card p {
  font-size: 1rem;
  line-height: 1.7;
}


/* ------------------------------------------------------------
   15. UNIVERS DS COSY ART
   ------------------------------------------------------------ */
.univers__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
}

.univers__visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.univers__text p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.univers__text strong {
  color: var(--color-text);
  font-weight: 500;
}

.link-arrow {
  color: var(--color-accent);
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.link-arrow:hover {
  border-bottom-color: var(--color-accent);
}


/* ------------------------------------------------------------
   16. CONTACT
   ------------------------------------------------------------ */
.contact__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact__note {
  text-align: center;
  font-size: 0.95rem;
  color: var(--color-text-soft);
}

.contact__note a {
  color: var(--color-accent);
  font-weight: 500;
}

.contact__note a:hover {
  border-bottom: 1px solid var(--color-accent);
}


/* ------------------------------------------------------------
   17. FOOTER
   ------------------------------------------------------------ */
.footer {
  background-color: var(--color-bg-alt);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid rgba(184, 149, 106, 0.15);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__title {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.footer__col p,
.footer__col a {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  line-height: 1.8;
}

.footer__list li {
  margin-bottom: 0.4rem;
}

.footer__list a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(184, 149, 106, 0.2);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.footer__bottom p {
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
}

.footer__legal {
  font-size: 0.8rem;
  opacity: 0.8;
}

.footer__credit {
  margin-top: var(--space-sm);
}

.footer__heart {
  color: var(--color-accent);
}


/* ------------------------------------------------------------
   18. ANIMATIONS — Fade-in au scroll
   ------------------------------------------------------------ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Réduit les animations si l'utilisateur préfère */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}


/* ------------------------------------------------------------
   19. RESPONSIVE
   ------------------------------------------------------------ */

/* Tablette (768px et moins) */
@media (max-width: 1024px) {
  .piliers {
    grid-template-columns: repeat(3, 1fr);
  }

  .tarifs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-2xl: 4rem;
    --space-xl: 3rem;
  }

  /* Nav : on cache les liens, on montre le burger */
  .nav__links {
    display: none;
  }

  .nav__burger {
    display: flex;
  }

  /* Hero : passage en colonne unique */
  .hero {
    min-height: auto;
    padding: calc(var(--space-3xl) + 2rem) 0 var(--space-xl);
  }

  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .hero__ctas {
    justify-content: center;
  }

  .hero__title {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }

  /* Piliers : passage en 2 colonnes */
  .piliers {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Personas, infos, tarifs, footer, univers : 1 colonne */
  .personas,
  .infos__grid,
  .tarifs__grid,
  .univers__inner,
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .differenciation {
    padding: var(--space-lg);
  }

  .differenciation__text,
  .differenciation__highlight {
    font-size: 1rem;
  }

  /* Contact : boutons empilés */
  .contact__ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .contact__ctas .btn {
    width: 100%;
  }

  /* Timeline plus serrée */
  .timeline::before {
    left: 18px;
  }

  .timeline__num {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
}

/* Petit mobile (375px et moins) */
@media (max-width: 480px) {
  .piliers {
    grid-template-columns: 1fr;
  }

  .tarif__price {
    font-size: 2rem;
  }

  .mantra__text {
    font-size: 1.5rem;
  }
}