/**
 * THEME ELEGANCE — Breslev by Esther Ifrah
 * Design premium or/crème — généré par Claude Code (Antigravity n'a pas livré à temps)
 * Tokens: --gold: #D4AF37 | --cream: #FFF8F0 | --navy: #1E3A8A | --dark: #0F172A
 */

/* ===== GOOGLE FONTS ===== */
/* Fonts loaded via Google Fonts link in HTML: Cinzel, Cormorant Garamond, Frank Ruhl Libre */

/* ===== ROOT TOKENS ===== */
:root {
  --gold: #D4AF37;
  --gold-light: #F5E6B8;
  --gold-dark: #A8892A;
  --navy: #1E3A8A;
  --dark: #0F172A;
  --cream: #EEF0FA;
  --cream-dark: #E4E7F4;
  --text: #2C3E50;
  --text-light: #6B7280;
  --serif: 'Cinzel', serif;
  --body: 'Cormorant Garamond', serif;
  --body-text: 'Cormorant Garamond', Georgia, serif;  /* For descriptions, longer reading */

  /* Warm-tinted shadows (research: never use blue-tinted shadows on warm cream BGs) */
  --shadow-sm:   0 1px 3px rgba(26,18,8,0.08), 0 1px 2px rgba(26,18,8,0.04);
  --shadow-book: -4px 4px 8px rgba(26,18,8,0.20), -8px 10px 24px rgba(26,18,8,0.12);
  --shadow-book-hover: -6px 8px 16px rgba(26,18,8,0.28), -12px 16px 40px rgba(26,18,8,0.16);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1); /* premium spring bounce */

  /* Override existing tokens */
  --color-gold: #D4AF37;
  --color-accent: #D4AF37;
}

/* ===== BODY ===== */
body {
  background-color: rgba(30, 58, 138, 0.3); /* 30% bleu marine */
  font-family: var(--body);
  font-size: 1.05rem;
  color: var(--text);
}

/* Body text (descriptions, paragraphs) uses Cormorant Garamond for better reading comfort */
p, .book-description, .description-text {
  font-family: var(--body-text);
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text);
}

/* ===== NAVBAR ELEGANCE ===== */
.navbar {
  background: rgba(15, 23, 42, 0.97) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.navbar__logo {
  font-family: var(--serif);
  font-size: 1.4rem;
  color: var(--gold) !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.navbar__nav-link {
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85) !important;
  transition: color 0.2s ease, border-bottom-color 0.2s ease;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.navbar__nav-link:hover {
  color: var(--gold) !important;
  border-bottom-color: var(--gold);
}

/* ===== HERO ELEGANCE ===== */
.hero-section {
  position: relative;
  min-height: 90vh;
}

.hero-overlay {
  background: linear-gradient(
    to bottom,
    rgba(15, 23, 42, 0.55) 0%,
    rgba(30, 58, 138, 0.40) 50%,
    rgba(15, 23, 42, 0.75) 100%
  ) !important;
}

.hero-title {
  font-family: var(--serif) !important;
  font-size: clamp(2.5rem, 6vw, 5rem) !important;
  color: var(--gold) !important;
  letter-spacing: 0.06em;
  text-shadow: 0 2px 30px rgba(212, 175, 55, 0.4);
  line-height: 1.15;
}

/* Gold shimmer animation on hero title */
@keyframes gold-shimmer {
  0%   { text-shadow: 0 2px 30px rgba(212, 175, 55, 0.3); }
  50%  { text-shadow: 0 2px 40px rgba(212, 175, 55, 0.7), 0 0 80px rgba(212, 175, 55, 0.3); }
  100% { text-shadow: 0 2px 30px rgba(212, 175, 55, 0.3); }
}

.hero-title {
  animation: gold-shimmer 4s ease-in-out infinite;
}

/* ===== BOOK CARDS ELEGANCE ===== */
.book-card {
  background: #ffffff !important;
  border: 1px solid rgba(212, 175, 55, 0.2) !important;
  border-radius: 12px !important;
  overflow: hidden;
  position: relative; /* needed for quick-add button */
  transition: transform var(--transition-spring),
              box-shadow 0.35s ease,
              border-color 0.3s ease !important;
  /* Warm book shadow (research: use warm rgba, not blue) */
  box-shadow: var(--shadow-book) !important;
  will-change: transform;
}

.book-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: var(--shadow-book-hover),
              0 0 0 1px rgba(212, 175, 55, 0.35) !important;
  border-color: rgba(212, 175, 55, 0.45) !important;
}

/* Standard 2:3 book cover ratio (industry standard: Penguin, Gallimard, Taschen) */
.book-cover-container {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #1E3A8A 0%, #0F172A 100%);
}

/* Fallback for browsers without aspect-ratio (Safari < 15) */
@supports not (aspect-ratio: 2/3) {
  .book-cover-container {
    padding-top: 150%; /* 2:3 ratio = height/width = 1.5 = 150% */
  }
}

.book-cover-container img,
.book-cover-container .book-cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Image zoom: scale the IMAGE inside container, not the card — prevents layout jump */
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.book-card:hover .book-cover-container img,
.book-card:hover .book-cover {
  transform: scale(1.06);
}

/* ===== QUICK-ADD BUTTON (slide up on hover) ===== */
/* Research: "Quick-Add button sliding up on hover" — highest conversion micro-interaction */
.btn-quick-add {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--gold);
  color: var(--dark);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.7rem;
  text-align: center;
  transform: translateY(100%);
  transition: transform var(--transition-spring);
  cursor: pointer;
  border: none;
  z-index: 2;
}

.book-cover-container:hover .btn-quick-add,
.book-card:hover .btn-quick-add {
  transform: translateY(0);
}

/* ===== SKELETON SHIMMER (cream-toned for warm literary feel) ===== */
@keyframes shimmer-book {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-book {
  aspect-ratio: 2 / 3;
  background: linear-gradient(
    90deg,
    #e8e0d4 25%,
    #f5f0e8 50%,
    #e8e0d4 75%
  );
  background-size: 200% 100%;
  animation: shimmer-book 1.5s infinite;
  border-radius: 4px;
}

/* Golden overlay on hover */
.book-cover-container::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 40%,
    rgba(212, 175, 55, 0.25) 100%
  );
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.book-card:hover .book-cover-container::after {
  opacity: 1;
}

/* Book info */
.book-title {
  font-family: var(--serif);
  color: var(--dark);
  font-size: 0.95rem;
  line-height: 1.4;
  font-weight: 600;
}

.book-author {
  font-family: var(--body);
  color: var(--navy);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.book-price {
  font-family: var(--serif);
  color: var(--gold-dark);
  font-size: 1.3rem;
  font-weight: 700;
}

/* ===== BUTTON SYSTEM (CC-5 — Research-backed, uniformisé) =====
 * PRIMARY  = Navy plein + texte blanc → action principale (Ajouter au panier, Payer)
 * SECONDARY = Transparent + bordure gold + texte gold → action secondaire (Lire extrait)
 * CTA       = Gold plein + texte dark → appel à l'action fort (S'abonner, Voir tout)
 * Touch target minimum 48px (Apple/Google standard)
 */

/* PRIMARY — Navy plein */
.btn-primary,
.btn-add-to-cart,
button[type="submit"]:not(.btn-outline):not(.btn-cta) {
  background: var(--navy) !important;
  color: #ffffff !important;
  font-family: var(--serif) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 2px solid var(--navy) !important;
  border-radius: 8px !important;
  padding: 0.85rem 1.6rem !important;
  min-height: 48px; /* Touch target */
  cursor: pointer;
  transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease !important;
  box-shadow: 0 2px 8px rgba(26,18,8,0.12) !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary:hover,
.btn-add-to-cart:hover {
  background: #152d6e !important; /* navy foncé */
  border-color: #152d6e !important;
  box-shadow: 0 6px 20px rgba(26,18,8,0.20) !important;
  transform: translateY(-2px);
  color: #ffffff !important;
}

/* SECONDARY — Outline gold */
.btn-outline,
.btn-secondary {
  background: transparent !important;
  color: var(--gold-dark) !important;
  border: 2px solid var(--gold) !important;
  font-family: var(--serif) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 8px !important;
  padding: 0.85rem 1.6rem !important;
  min-height: 48px;
  cursor: pointer;
  transition: all 0.25s ease !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-outline:hover,
.btn-secondary:hover {
  background: rgba(212, 175, 55, 0.08) !important;
  border-color: var(--gold-dark) !important;
  color: var(--gold-dark) !important;
  transform: translateY(-1px);
}

/* CTA — Gold plein (calls to action forts) */
.btn-cta,
a.btn-cta {
  background: var(--gold) !important;
  color: var(--dark) !important;
  border: 2px solid var(--gold) !important;
  font-family: var(--serif) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 8px !important;
  padding: 0.85rem 1.6rem !important;
  min-height: 48px;
  cursor: pointer;
  transition: all 0.25s ease !important;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(212,175,55,0.30) !important;
}

.btn-cta:hover {
  background: var(--gold-dark) !important;
  border-color: var(--gold-dark) !important;
  color: #ffffff !important;
  box-shadow: 0 8px 25px rgba(212,175,55,0.40) !important;
  transform: translateY(-2px);
}

/* Connexion / Inscription → Navy (cohérent avec boutons Primary) */
button[onclick*="login"],
button[onclick*="signup"],
.btn-auth {
  background: var(--navy) !important;
  color: #ffffff !important;
  border-color: var(--navy) !important;
}

/* ===== SECTION HEADERS ELEGANCE ===== */
h2.text-center {
  font-family: var(--serif) !important;
  color: var(--dark) !important;
  font-size: clamp(1.8rem, 3vw, 2.6rem) !important;
  letter-spacing: 0.05em;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

h2.text-center::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin: 0.7rem auto 0;
  border-radius: 2px;
}

/* ===== FOOTER ELEGANCE ===== */
.footer {
  background: linear-gradient(180deg, #0F172A 0%, #080F1F 100%) !important;
  border-top: 1px solid rgba(212, 175, 55, 0.25);
}

.footer h4 {
  font-family: var(--serif) !important;
  color: var(--gold) !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.footer__link {
  color: rgba(255,255,255,0.6) !important;
  transition: color 0.2s ease;
  font-family: var(--body);
}

.footer__link:hover {
  color: var(--gold) !important;
}

.footer__bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.15);
  padding-top: 1.2rem;
  color: rgba(255,255,255,0.4) !important;
  font-size: 0.82rem;
  font-family: var(--body);
}

/* ===== SOCIAL ICONS ===== */
.social-links {
  display: flex;
  gap: 0.8rem;
  margin-top: 1rem;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(212, 175, 55, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7) !important;
  font-size: 0.9rem;
  transition: all 0.25s ease;
  text-decoration: none;
}

.social-link:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--dark) !important;
  transform: translateY(-3px);
}

/* ===== PRODUCT PAGE ELEGANCE ===== */
.product-title,
h1[style*="color: #2c3e50"],
h1[style*="color:#2c3e50"] {
  font-family: var(--serif) !important;
}

/* ===== AUDIO SECTION ===== */
.audio-section-title {
  font-family: var(--serif) !important;
  color: var(--gold) !important;
}

/* ===== COURS DU JOUR ===== */
.cours-du-jour-preview h3 {
  font-family: var(--serif) !important;
}

/* ===== GRID PRODUCTS ELEGANCE ===== */
.grid-products {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)) !important;
  gap: 1.8rem !important;
}

@media (max-width: 768px) {
  .grid-products {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }

  .book-title {
    font-size: 0.85rem !important;
  }

  .book-price {
    font-size: 1.1rem !important;
  }
}

@media (max-width: 400px) {
  .grid-products {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.7rem !important;
  }
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
  background: #ffffff !important;
  border: 1px solid rgba(212, 175, 55, 0.15) !important;
  border-radius: 16px !important;
  box-shadow: 0 4px 20px rgba(30, 58, 138, 0.06) !important;
}

/* ===== SCROLL FADEUP ANIMATION ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeUp 0.6s ease forwards;
}