/* ============================================
   ELYSIUM FINE ART — Global Stylesheet
   Mobile-First | Production-Ready
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Palette */
  --color-black: #0a0a0a;
  --color-gold: #c4a76c;
  --color-gold-hover: #d4b97c;
  --color-warm-white: #e8e4df;
  --color-text-secondary: #8a8580;
  --color-border: rgba(196, 167, 108, 0.2);
  --color-border-light: rgba(232, 228, 223, 0.1);

  /* Typography */
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-base: 0.3s var(--ease-out);
}

/* --- Font Face --- */
@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/assets/fonts/cormorant-garamond-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/assets/fonts/cormorant-garamond-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/inter-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-warm-white);
  background-color: var(--color-black);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

/* --- Typography --- */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--color-warm-white);
}

h2 {
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  color: var(--color-text-secondary);
  font-weight: 500;
  line-height: 1.5;
}

p {
  color: var(--color-warm-white);
  opacity: 0.85;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 300;
  height: var(--nav-height);
  background-color: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-base);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Logo: monogram + text */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
  position: relative;
  z-index: 201;
}

.nav__logo img {
  height: 50px;
  width: auto;
}

.nav__logo-text-svg {
  display: block;
  height: 18px;
  width: auto;
}

/* Nav links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
  padding: var(--space-xs) 0;
  position: relative;
  display: inline-block;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-gold);
}

.nav__link--home {
  display: none;
}

/* Language switcher */
.nav__lang {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-left: var(--space-sm);
  padding-left: var(--space-md);
  border-left: 1px solid var(--color-border-light);
}

.nav__lang a {
  transition: color var(--transition-base);
}

.nav__lang a:hover {
  color: var(--color-gold);
}

.nav__lang-active {
  color: var(--color-warm-white);
}

/* Mobile menu toggle — hidden on desktop */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 24px;
  height: 24px;
  padding: 0;
  position: relative;
  z-index: 201;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-warm-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-height);
}

.hero__content {
  max-width: 780px;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero h2 {
  margin-bottom: var(--space-lg);
}

/* --- CTA Button --- */
.cta {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 0.875rem 2rem;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.cta:hover {
  background-color: var(--color-gold);
  color: var(--color-black);
}

/* ============================================
   CAROUSEL — Track Record
   ============================================ */
.carousel {
  padding: var(--space-xl) 0 var(--space-2xl);
  overflow: hidden;
}

.carousel__header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.carousel__label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.carousel__viewport {
  position: relative;
  overflow: hidden;
}

/* Crossfade: track is a stacking context, not a flex row */
.carousel__track {
  position: relative;
  width: 100%;
}

.carousel__slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 0.7s ease-in-out;
  pointer-events: none;
  padding: 0 var(--space-md);
}

/* Active slide: visible + in flow for height */
.carousel__slide.is-active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}

.carousel__figure {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

/* Breathing animation on active image */
@keyframes carousel-breathe {
  0%   { transform: translateZ(0) scale(1.00); }
  100% { transform: translateZ(0) scale(1.03); }
}

.carousel__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  transition: transform 0.4s ease;
  will-change: transform;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Breathing only on active slide */
.carousel__slide.is-active .carousel__image {
  animation: carousel-breathe 9s ease-in-out infinite alternate;
}

/* Subtle hover scale — pauses breathing */
.carousel__image:hover {
  animation-play-state: paused;
}

.carousel__caption {
  margin-top: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-warm-white);
  text-align: center;
  letter-spacing: 0.01em;
  
  /* === DÉBUT DE LA MODIFICATION === */
  line-height: 1.4; 
  min-height: 2.8em;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  /* === FIN DE LA MODIFICATION === */
}

/* Carousel controls */
.carousel__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.carousel__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.carousel__btn:hover {
  border-color: var(--color-gold);
  background-color: rgba(196, 167, 108, 0.08);
}

.carousel__btn svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-warm-white);
  fill: none;
  stroke-width: 1.5;
}

.carousel__dots {
  display: flex;
  gap: 8px;
}

.carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-text-secondary);
  opacity: 0.4;
  transition: opacity var(--transition-base), background-color var(--transition-base);
  padding: 0;
}

.carousel__dot--active {
  opacity: 1;
  background-color: var(--color-gold);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer__locations {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.footer__copyright {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  opacity: 0.7;
  margin-bottom: var(--space-sm);
}

.footer__legal {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.footer__legal a {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  opacity: 0.6;
  transition: opacity var(--transition-base), color var(--transition-base);
  position: relative;
  display: inline-block;
}

.footer__legal a:hover {
  opacity: 1;
  color: var(--color-gold);
}

/* --- Effet de soulignement dynamique (Luxe) --- */
.nav__link::after, 
.footer__legal a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-gold);
  transition: width var(--transition-base);
}

@media (hover: hover) {
  .nav__link:hover::after, 
  .footer__legal a:hover::after {
    width: 100%;
  }
}

/* ============================================
   PAGE-LEVEL CONTENT (Expertise, Advisory)
   ============================================ */
.page-content {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
}

.page-content__text {
  max-width: 720px;
}

.page-content__text p {
  margin-bottom: var(--space-md);
}

.page-content__text p:last-child {
  margin-bottom: 0;
}

.page-content__text h1 {
  margin-bottom: var(--space-lg);
}

.page-content__text h2 {
  margin-bottom: var(--space-md);
}

/* --- Reach & Network indicators (Page 2) --- */
.indicators {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  align-items: center;
}

.founder-photo {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
  max-width: 720px;
}

.founder-photo img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.indicator {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--color-warm-white);
  opacity: 0.75;
  text-align: center;
  transition: opacity var(--transition-base);
  cursor: default;
  --fade-opacity: 0.75;
}

.indicator:hover {
  opacity: 1;
}

.indicator.fade-in.is-visible:hover {
  opacity: 1;
}

.indicator__subtitle {
  display: block;
  font-size: 0.85em;
  margin-top: 4px;
}


/* ============================================
   FORM (Page Contact)
   ============================================ */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-warm-white);
  background-color: transparent;
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  transition: border-color var(--transition-base);
  border-radius: 0;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-gold);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%238a8580' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-select option {
  background-color: var(--color-black);
  color: var(--color-warm-white);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-radio {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--color-warm-white);
  opacity: 0.85;
}

.form-radio input[type="radio"] {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  cursor: pointer;
  transition: border-color var(--transition-base);
}

.form-radio input[type="radio"]:checked {
  border-color: var(--color-gold);
}

.form-radio input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-gold);
}

/* Honeypot — invisible to users */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

/* ============================================
   CONTACT FORM LAYOUT
   ============================================ */
.contact-form {
  max-width: 600px;
  margin-top: var(--space-lg);
}

.contact-form .cta {
  margin-top: var(--space-sm);
  width: 100%;
  text-align: center;
}

.contact-form .cta:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form feedback messages */
.form-feedback {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  line-height: 1.5;
}

.form-feedback--success {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-gold);
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.form-feedback--error {
  color: #d97459;
}

/* Fieldset reset */
.contact-form fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

/* ============================================
   NAP — Contact Addresses
   ============================================ */
.contact-nap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.contact-nap h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-gold);
  margin-bottom: var(--space-xs);
}

.contact-nap address {
  font-style: normal;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ============================================
   LEGAL PAGES (Privacy Policy, Terms)
   ============================================ */
.legal-text h2 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--color-warm-white);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.legal-text h2:first-of-type {
  margin-top: var(--space-md);
}

.legal-text__date {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  opacity: 0.7;
  margin-bottom: var(--space-lg);
}

.legal-text ul {
  padding-left: 1.25rem;
  margin-bottom: var(--space-md);
}

.legal-text ul li {
  list-style: disc;
  color: var(--color-warm-white);
  opacity: 0.85;
  margin-bottom: var(--space-xs);
  font-size: 1rem;
  line-height: 1.7;
}

/* ============================================
   UTILITY
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* --- Mobile (max 768px) --- */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
    margin-left: auto;
  }

  .nav__logo {
    z-index: 201;
  }

  .nav__logo-text-svg {
    position: fixed;
    left: 50%;
    top: calc(var(--nav-height) / 2);
    transform: translate(-50%, -50%);
    height: 28px;
    z-index: 201;
  }

  .nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    height: calc(100dvh - var(--nav-height));
    z-index: 200;
    background-color: var(--color-black);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: var(--space-lg);
    /* Transition fluide — pas de display:none/flex */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  .nav__menu--open {
    opacity: 1;
    visibility: visible;
  }

  .nav__links {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .nav__link {
    font-size: 1rem;
  }

  .nav__link--home {
    display: inline;
  }

  .nav__lang {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    margin-top: var(--space-lg);
  }

  .contact-nap {
    grid-template-columns: 1fr;
  }
}

/* --- Tablet+ (min 769px) --- */
@media (min-width: 769px) {
  .nav__menu {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--max-width);
    height: 100%;
    padding: 0 var(--space-md);
    pointer-events: none;
  }

  .nav__links, .nav__lang {
    pointer-events: auto;
  }
}

/* --- Desktop (min 1024px) --- */
@media (min-width: 1024px) {
  .hero__content {
    max-width: 820px;
  }

  .indicators {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================
   FORM — Validation visuelle
   ============================================ */
.form-input--error,
.form-select--error,
.form-textarea--error {
  border-color: #d97459;
}

.form-input--error:focus,
.form-select--error:focus,
.form-textarea--error:focus {
  border-color: #d97459;
}

/* Radio group error state */
.form-radio-group--error .form-radio {
  color: #d97459;
}

/* ============================================
   SCROLL FADE-IN
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Délai en cascade pour les indicateurs */
.indicator:nth-child(1) { transition-delay: 0s; }
.indicator:nth-child(2) { transition-delay: 0.1s; }
.indicator:nth-child(3) { transition-delay: 0.2s; }
.indicator:nth-child(4) { transition-delay: 0.3s; }

/* ============================================
   CTA — Taille tactile mobile (Priorité 2.3)
   ============================================ */
@media (max-width: 768px) {
  .cta {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
  }

  .contact-form .cta {
    min-height: 52px;
  }
}

/* ============================================
   ACCESSIBILITÉ : Réduction des mouvements
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  /* Désactive la "respiration" (zoom de 9s) sur le carrousel */
  .carousel__slide.is-active .carousel__image {
    animation: none; 
  }
  
  /* Coupe les transitions d'apparition au scroll pour un affichage immédiat */
  .fade-in {
    transition: none; 
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   CLOSING CTA (Expertise, Advisory)
   ============================================ */
.page-cta {
  margin-top: var(--space-lg);
}

/* ============================================
   H2 visuellement masqué (structure sémantique)
   ============================================ */
.visually-hidden-heading {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   DL pour mentions légales
   ============================================ */
.legal-dl {
  margin-bottom: var(--space-md);
}

.legal-dl dt {
  font-weight: 500;
  color: var(--color-warm-white);
  margin-top: var(--space-sm);
  font-size: 0.9375rem;
}

.legal-dl dd {
  margin-left: 0;
  margin-bottom: var(--space-xs);
  color: var(--color-warm-white);
  opacity: 0.85;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.legal-dl dd a {
  color: var(--color-gold);
  text-decoration: underline;
  text-decoration-color: rgba(196, 167, 108, 0.3);
}

.legal-dl dd a:hover {
  text-decoration-color: var(--color-gold);
}