/* ============================================
   Pierre Gojat — Ultra Modern Design
   ============================================ */

:root {
  --color-bg: #0a0a0a;
  --color-surface: #111111;
  --color-surface-2: #1a1a1a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e8e8e8;
  --color-text-muted: #888888;
  --color-text-dim: #555555;
  --color-accent: #c8a455;
  --color-accent-light: #dbb96a;
  --color-white: #ffffff;

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav--scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-white);
}

.nav__logo-dot {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-white);
  margin: 6px 0;
  transition: var(--transition-fast);
}

.nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav__links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav__links a:hover {
  color: var(--color-white);
}

.nav__links a:hover::after {
  width: 100%;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(200, 164, 85, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200, 164, 85, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-bg) 0%, #0d0d0d 100%);
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border: 0.5px solid rgba(200, 164, 85, 0.08);
  border-radius: 50%;
  animation: heroCircle 30s linear infinite;
}

.hero__bg::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  border: 0.5px solid rgba(200, 164, 85, 0.05);
  border-radius: 50%;
  animation: heroCircle 20s linear infinite reverse;
}

@keyframes heroCircle {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 1s ease forwards 0.3s;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 1s ease forwards 0.5s;
}

.hero__tagline {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 300;
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeUp 1s ease forwards 0.7s;
}

.hero__cta {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 1rem 2.5rem;
  transition: all var(--transition);
  opacity: 0;
  animation: fadeUp 1s ease forwards 0.9s;
}

.hero__cta:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  animation: fadeUp 1s ease forwards 1.2s;
}

.hero__scroll span {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Sections
   ============================================ */

.section {
  padding: var(--space-2xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.section__desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============================================
   Books Grid
   ============================================ */

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-md);
}

a.book-card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  transition: all var(--transition);
}

.book-card:hover {
  border-color: rgba(200, 164, 85, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.book-card__image {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.book-card__cover {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  position: relative;
}

.book-card__cover--egypte {
  background: linear-gradient(135deg, #1a1208 0%, #2a1f0e 30%, #1a1208 100%);
}

.book-card__cover--egypte::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(200, 164, 85, 0.2);
}

.book-card__cover--egypte::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  border: 0.5px solid rgba(200, 164, 85, 0.15);
  border-radius: 50%;
}

.book-card__cover--fous {
  background: linear-gradient(135deg, #0a1520 0%, #0f2030 30%, #0a1520 100%);
}

.book-card__cover--fous::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(100, 160, 220, 0.15);
}

.book-card__cover--cedille {
  background: linear-gradient(135deg, #1a0a0a 0%, #2a1010 30%, #1a0a0a 100%);
}

.book-card__cover--cedille::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(200, 100, 100, 0.15);
}

.book-card__cover--cepage {
  background: linear-gradient(135deg, #0a1a0a 0%, #102a10 30%, #0a1a0a 100%);
}

.book-card__cover--cepage::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(100, 180, 100, 0.15);
}

.book-card__cover--cromlech {
  background: linear-gradient(135deg, #0a1015 0%, #152535 30%, #0a1015 100%);
}

.book-card__cover--cromlech::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(80, 140, 180, 0.15);
}

.book-card__cover--omble {
  background: linear-gradient(135deg, #1a1a08 0%, #2a2a10 30%, #1a1a08 100%);
}

.book-card__cover--omble::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(200, 180, 80, 0.15);
}

.book-card__cover--ecole {
  background: linear-gradient(135deg, #f5ecd7 0%, #e8dcc0 30%, #f5ecd7 100%);
}

.book-card__cover--ecole::before {
  content: '';
  position: absolute;
  inset: 20px;
  border: 0.5px solid rgba(80, 60, 30, 0.15);
}

.book-card__cover--ecole .book-card__cover-title,
.book-card__cover--ecole .book-card__series {
  color: #1a1a1a;
}

.book-card__cover--ecole .book-card__series {
  opacity: 1;
}

.book-card__cover-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.book-card__series {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  opacity: 0.7;
}

.book-card__cover-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--color-white);
  line-height: 1.3;
}

.book-card__chapter {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.book-card__cta {
  display: block;
  margin-top: var(--space-sm);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: color var(--transition-fast), letter-spacing var(--transition);
}

.book-card:hover .book-card__cta {
  letter-spacing: 0.2em;
  color: var(--color-accent-light);
}

.book-card__info {
  padding: var(--space-md);
}

.book-card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.book-card__title {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.book-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.book-card__meta {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Quote Section
   ============================================ */

.quote-section {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.featured-quote {
  text-align: center;
}

.featured-quote p {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 300;
  font-style: italic;
  color: var(--color-white);
  line-height: 1.5;
}

/* ============================================
   About
   ============================================ */

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: center;
}

.about__image-placeholder {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: var(--space-xl);
  color: var(--color-accent);
  opacity: 0.4;
}

.about__image-placeholder svg {
  width: 100%;
  height: 100%;
  max-width: 200px;
}

.about__text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

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

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

.about__details {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.about__detail-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 4px;
}

.about__detail-value {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ============================================
   Contact
   ============================================ */

.contact {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  max-width: 700px;
  margin: 0 auto;
}

.contact__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  transition: all var(--transition);
}

.contact__card:hover {
  border-color: rgba(200, 164, 85, 0.2);
  background: var(--color-surface-2);
}

.contact__icon {
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.contact__label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 4px;
}

.contact__value {
  font-size: 0.95rem;
  color: var(--color-text);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 300;
  color: var(--color-text-muted);
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* ============================================
   Book Detail Page
   ============================================ */

.book-page {
  padding-top: 120px;
  padding-bottom: var(--space-2xl);
}

.book-page__back {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  transition: color var(--transition-fast);
}

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

.book-page__header {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  align-items: start;
}

.book-page__cover {
  aspect-ratio: 3 / 4;
  position: relative;
  border-radius: 2px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.book-page__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.book-page__desc {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.book-page__actions {
  margin: var(--space-lg) 0;
}

.book-page__meta-grid {
  display: flex;
  gap: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.book-page__reader {
  margin-top: var(--space-xl);
}

.book-page__reader-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.book-page__pdf {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.book-page__pdf iframe {
  width: 100%;
  height: 85vh;
  min-height: 600px;
  border: none;
  display: block;
}

@media (max-width: 768px) {
  .book-page__header {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .book-page__cover {
    max-width: 280px;
    margin: 0 auto;
  }

  .book-page__meta-grid {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .book-page__pdf iframe {
    height: 60vh;
    min-height: 400px;
  }
}

/* ============================================
   Scroll Animations
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    transition: right var(--transition);
  }

  .nav__links--open {
    right: 0;
  }

  .nav__links a {
    font-size: 1.2rem;
  }

  .nav__toggle--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav__toggle--active span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle--active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .books-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .about__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about__image-placeholder {
    max-width: 300px;
    margin: 0 auto;
  }

  .about__details {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }

  .footer__inner {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .hero__scroll {
    display: none;
  }
}

@media (max-width: 480px) {
  .books-grid {
    grid-template-columns: 1fr;
  }

  .book-card__cover {
    padding: var(--space-md);
  }

  .book-card__cover-title {
    font-size: 1.4rem;
  }
}