/* ================================================================
   BAYS IA HOMESTYLING — DESIGN PREMIUM SOMBRE
   ================================================================ */

:root {
  --gold:        #C4AF9A;
  --gold-dark:   #A68B73;
  --gold-light:  #D3C3B0;
  --black:       #1a1510;
  --dark:        #1e1a14;
  --dark2:       #252018;
  --dark3:       #222222;
  --white:       #ffffff;
  --white-soft:  rgba(255,255,255,0.88);
  --white-dim:   rgba(255,255,255,0.55);
  --gold-glow:   rgba(196,175,154,0.18);
  --gold-border: rgba(196,175,154,0.30);
  --font:        'Times New Roman', Times, serif;
  --sans:        -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition:  0.35s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── HERO THREE.JS ── */
.homestyling-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--black);
}

#threeCanvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: 0;
}

.hero-content-homestyling {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  max-width: 900px;
  width: 100%;
}

/* Trait doré décoratif */
.hero-content-homestyling::before {
  content: '';
  display: block;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 0 auto 2rem;
}

.hero-label {
  display: inline-block;
  font-size: 0.60rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.4rem;
  padding: 6px 18px;
  border: 1px solid var(--gold-border);
}

.hero-title-homestyling {
  font-family: var(--font);
  font-size: clamp(2rem, 5.5vw, 4.2rem);
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.06em;
  line-height: 1.15;
  margin-bottom: 1.4rem;
  text-shadow: 0 0 40px rgba(196,175,154,0.20);
}

.hero-title-homestyling .accent {
  color: var(--gold);
  font-style: italic;
}

.hero-subtitle-homestyling {
  font-size: clamp(0.85rem, 1.6vw, 1rem);
  color: var(--white-dim);
  line-height: 1.7;
  margin-bottom: 2.8rem;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

/* Features row */
.hero-features {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white-dim);
  transition: color var(--transition);
}

.hero-feature i {
  color: var(--gold);
  font-size: 0.85rem;
}

.hero-feature:hover { color: var(--gold); }

/* Bouton CTA hero */
.hero-cta-homestyling {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 3rem;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: color var(--transition), box-shadow var(--transition);
}

.hero-cta-homestyling::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 0;
}

.hero-cta-homestyling span,
.hero-cta-homestyling i { position: relative; z-index: 1; }

.hero-cta-homestyling:hover::before { opacity: 1; }
.hero-cta-homestyling:hover {
  box-shadow: 0 8px 32px rgba(196,175,154,0.35);
  color: var(--black);
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--white-dim);
  font-size: 0.58rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero-scroll-hint::after {
  content: '';
  display: block;
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--gold), transparent);
}

@keyframes scrollBounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(6px); }
}

/* ── SECTIONS COMMUNES ── */
.questionnaire-section,
.upload-section,
.loading-section {
  display: none;
  min-height: 100vh;
  background: var(--dark);
  padding: clamp(3rem, 6vw, 6rem) clamp(1.5rem, 5vw, 4rem);
}

.questionnaire-section.active,
.upload-section.active,
.loading-section.active { display: flex; flex-direction: column; align-items: center; justify-content: center; }

.homestyling-hero.active { display: flex; }

.section-title-homestyling {
  font-family: var(--font);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 2rem;
}

.section-title-homestyling .icon { color: var(--gold); margin-right: 0.5rem; }

/* ── PROGRESS BAR ── */
.progress-bar {
  width: 100%;
  max-width: 600px;
  height: 2px;
  background: rgba(255,255,255,0.08);
  margin-bottom: 2.5rem;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold));
  transition: width 0.50s ease;
  width: 0%;
}

/* ── QUESTIONNAIRE ── */
.questionnaire-container { width: 100%; max-width: 700px; }

.question-block { display: none; }
.question-block.active { display: block; }

.question-title {
  font-family: var(--font);
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  color: var(--white);
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
}

.question-subtitle {
  font-size: 0.85rem;
  color: var(--white-dim);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
  margin-bottom: 2.2rem;
}

.option-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  padding: 1.2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.option-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(196,175,154,0.08), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.option-card:hover { border-color: var(--gold-border); transform: translateY(-2px); }
.option-card:hover::before { opacity: 1; }

.option-card.selected {
  border-color: var(--gold);
  background: rgba(196,175,154,0.10);
}

.option-card i {
  font-size: 1.4rem;
  color: var(--gold);
  margin-bottom: 0.6rem;
  display: block;
}

.option-title { font-size: 0.80rem; color: var(--white-soft); letter-spacing: 0.04em; }

.option-card p:last-child:not(.option-title) {
  font-size: 0.70rem;
  color: var(--white-dim);
  margin-top: 0.3rem;
  line-height: 1.5;
}

/* Navigation questionnaire */
.question-navigation {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
}

.nav-btn {
  flex: 1;
  padding: 0.85rem 1.5rem;
  border: 1px solid;
  font-family: var(--font);
  font-size: 0.70rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
}

.nav-btn-primary {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  border-color: var(--gold);
  color: var(--black);
}
.nav-btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 20px rgba(196,175,154,0.30);
  transform: translateY(-2px);
}
.nav-btn-primary:disabled { opacity: 0.35; cursor: not-allowed; transform: none; }

.nav-btn-secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.15);
  color: var(--white-dim);
}
.nav-btn-secondary:hover:not(:disabled) { border-color: var(--gold-border); color: var(--white-soft); }
.nav-btn-secondary:disabled { opacity: 0.25; cursor: not-allowed; }

/* ── UPLOAD SECTION ── */
.upload-container { width: 100%; max-width: 640px; display: flex; flex-direction: column; gap: 1.5rem; }

.upload-tips {
  background: rgba(196,175,154,0.06);
  border: 1px solid var(--gold-border);
  padding: 1.2rem 1.5rem;
}

.upload-tips h3 {
  font-size: 0.70rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.8rem;
}

.upload-tips ul { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.upload-tips li { font-size: 0.82rem; color: var(--white-dim); padding-left: 1rem; position: relative; }
.upload-tips li::before { content: '✦'; position: absolute; left: 0; color: var(--gold); font-size: 0.55rem; top: 3px; }

.upload-zone {
  border: 1px dashed rgba(196,175,154,0.40);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: rgba(255,255,255,0.02);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--gold);
  background: rgba(196,175,154,0.05);
}

.upload-icon { font-size: 2.5rem; color: var(--gold); margin-bottom: 1rem; }
.upload-text { font-size: 0.88rem; color: var(--white-soft); margin-bottom: 0.4rem; }
.upload-subtext { font-size: 0.72rem; color: var(--white-dim); letter-spacing: 0.06em; }

#imagePreview {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  display: none;
  border: 1px solid var(--gold-border);
}

#processBtn {
  display: none;
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  border: none;
  color: var(--black);
  font-family: var(--font);
  font-size: 0.72rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  align-self: center;
}
#processBtn:hover { box-shadow: 0 6px 24px rgba(196,175,154,0.35); transform: translateY(-2px); }

.upload-nav { display: flex; gap: 1rem; margin-top: 0.5rem; }
.upload-nav .nav-btn { flex: none; padding: 0.75rem 1.8rem; }

/* ── LOADING SECTION ── */
.loading-section { gap: 2rem; }

.loading-animation {
  position: relative;
  width: 80px;
  height: 80px;
}

.loading-ring {
  width: 80px;
  height: 80px;
  border: 2px solid rgba(196,175,154,0.15);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-logo {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-logo img { width: 36px; height: auto; filter: brightness(0) invert(1); opacity: 0.6; }

.loading-text {
  text-align: center;
}

.loading-title {
  font-family: var(--font);
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 0.5rem;
  letter-spacing: 0.08em;
}

#loadingProgress {
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

/* ── POPUP LEAD ── */
.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.popup-overlay.active { display: flex; }

.popup-container {
  background: var(--dark2);
  border: 1px solid var(--gold-border);
  padding: clamp(2rem, 5vw, 3.5rem);
  max-width: 480px;
  width: 100%;
  position: relative;
  animation: popupIn 0.40s cubic-bezier(0.34,1.56,0.64,1);
}

@keyframes popupIn {
  from { transform: scale(0.88) translateY(20px); opacity: 0; }
  to   { transform: scale(1) translateY(0); opacity: 1; }
}

.popup-container::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-dark));
}

.popup-title {
  font-family: var(--font);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  color: var(--white);
  margin-bottom: 0.5rem;
  text-align: center;
  letter-spacing: 0.06em;
}

.popup-subtitle {
  font-size: 0.82rem;
  color: var(--white-dim);
  text-align: center;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.popup-form { display: flex; flex-direction: column; gap: 0.8rem; }

.popup-input {
  width: 100%;
  padding: 0.85rem 1.1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
}

.popup-input:focus { border-color: var(--gold); }
.popup-input::placeholder { color: rgba(255,255,255,0.30); }

.popup-submit {
  padding: 1rem;
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  border: none;
  color: var(--black);
  font-family: var(--font);
  font-size: 0.70rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.popup-submit:hover { box-shadow: 0 6px 24px rgba(196,175,154,0.30); transform: translateY(-2px); }

.popup-privacy {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.25);
  text-align: center;
  margin-top: 0.8rem;
  line-height: 1.5;
}

/* ── POPUP ERREUR ── */
.error-popup {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.error-popup.active { display: flex; }

.error-container {
  background: var(--dark2);
  border: 1px solid rgba(220,80,80,0.30);
  padding: 2.5rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.error-container::before {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(220,80,80,0.60), transparent);
  margin-bottom: 1.5rem;
}

.error-icon { font-size: 2.5rem; color: #e05555; margin-bottom: 1rem; }
.error-title { font-family: var(--font); font-size: 1.2rem; color: var(--white); margin-bottom: 0.5rem; }
#errorMessage { font-size: 0.85rem; color: var(--white-dim); margin-bottom: 1rem; line-height: 1.6; }
#errorAttempts { font-size: 0.72rem; color: var(--gold); letter-spacing: 0.10em; margin-bottom: 1.5rem; }
.error-close {
  padding: 0.8rem 2rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.20);
  color: var(--white-dim);
  font-family: var(--font);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.error-close:hover { border-color: var(--gold-border); color: var(--white); }

/* ── SUCCÈS ── */
#success {
  display: none;
  min-height: 100vh;
  background: var(--dark);
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
  flex-direction: column;
  gap: 1.5rem;
}

#success.active { display: flex; }

.success-icon { font-size: 3rem; color: var(--gold); animation: successPop 0.60s cubic-bezier(0.34,1.56,0.64,1); }
@keyframes successPop { from { transform: scale(0); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.success-title {
  font-family: var(--font);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--white);
  letter-spacing: 0.08em;
}

.success-text {
  font-size: clamp(0.85rem, 1.5vw, 0.95rem);
  color: var(--white-dim);
  max-width: 480px;
  line-height: 1.7;
}

.success-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2.5rem;
  border: 1px solid var(--gold-border);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
  margin-top: 0.5rem;
}
.success-cta:hover { background: var(--gold-glow); border-color: var(--gold); }

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  .hero-features { gap: 1rem; }
  .hero-feature { font-size: 0.65rem; }
  .options-grid { grid-template-columns: 1fr 1fr; }
  .option-card { padding: 1rem 0.75rem; }
  .question-navigation { flex-direction: column; }
  .nav-btn { width: 100%; }
  .upload-zone { padding: 2rem 1rem; }
}

@media (max-width: 420px) {
  .options-grid { grid-template-columns: 1fr; }
  .hero-cta-homestyling { padding: 0.85rem 2rem; }
}

/* ── LEAD POPUP (legacy class support) ── */
.lead-popup {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.lead-popup.active { display: flex; }

.popup-content {
  background: var(--dark2);
  border: 1px solid var(--gold-border);
  padding: clamp(2rem, 5vw, 3.5rem);
  max-width: 480px;
  width: 100%;
  position: relative;
  animation: popupIn 0.40s cubic-bezier(0.34,1.56,0.64,1);
}
.popup-content::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--gold-dark));
}

/* Error popup legacy */
.error-popup {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.error-popup.active { display: flex; }

.error-content {
  background: var(--dark2);
  border: 1px solid rgba(220,80,80,0.30);
  padding: 2.5rem;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.error-title { font-family: var(--font); font-size: 1.1rem; color: var(--white); margin-bottom: 0.6rem; }
.error-message { font-size: 0.85rem; color: var(--white-dim); margin-bottom: 1rem; line-height: 1.6; }
.error-attempts { font-size: 0.72rem; color: var(--gold); margin-bottom: 1.2rem; }
.error-btn {
  padding: 0.75rem 2rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.20);
  color: var(--white-dim);
  font-family: var(--font);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.error-btn:hover { border-color: var(--gold-border); color: var(--white); }

/* Success section legacy */
.success-section {
  display: none;
  min-height: 100vh;
  background: var(--dark);
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
  flex-direction: column;
  gap: 1.5rem;
}
.success-section.active { display: flex; }
.success-title { font-family: var(--font); font-size: clamp(1.4rem,3vw,2rem); color: var(--white); }
.success-text { font-size: 0.90rem; color: var(--white-dim); max-width: 480px; line-height: 1.7; }
.success-actions { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin-top: 0.5rem; }
.success-cta-primary, .success-cta-secondary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; font-family: var(--font);
  font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; transition: all var(--transition);
}
.success-cta-primary { background: linear-gradient(135deg, var(--gold-dark), var(--gold)); color: var(--black); }
.success-cta-primary:hover { box-shadow: 0 6px 24px rgba(196,175,154,0.35); transform: translateY(-2px); }
.success-cta-secondary { border: 1px solid var(--gold-border); color: var(--white); }
.success-cta-secondary:hover { background: var(--gold-glow); border-color: var(--gold); }