/* ===================================================================
   La forêt d'Ondée — Design System & Components
   =================================================================== */

:root {
  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Lora', Georgia, serif;

  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Forest Palette — Dark mode by default */
  --color-bg:           #0d1a0d;
  --color-surface:      #132013;
  --color-surface-2:    #1a2e1a;
  --color-surface-offset: #0f260f;
  --color-divider:      #2d4a3e;
  --color-border:       #3a5a4a;

  --color-text:         #e8e0d0;
  --color-text-muted:   #a89e8c;
  --color-text-faint:   #6b6356;

  --color-gold:         #c4a265;
  --color-gold-light:   #e8c878;
  --color-gold-dark:    #8b6f3a;
  --color-gold-dim:     rgba(196, 162, 101, 0.35);
  --color-cream-dim:    rgba(232, 224, 208, 0.65);
  --color-cream:        #e8e0d0;

  --color-forest-deep:  #1a2e1a;
  --color-forest-mid:   #2d4a3e;
  --color-forest-light: #3d6a5a;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Content widths */
  --content-narrow: 700px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-gold: 0 0 30px rgba(196,162,101,0.15);
}

/* ===================================================================
   LAYOUT
   =================================================================== */

.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

/* ===================================================================
   NAVIGATION
   =================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 26, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(45, 74, 62, 0.3);
  transform: translateY(-100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s ease;
}

.nav--visible {
  transform: translateY(0);
}

.nav__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav__links {
  display: flex;
  gap: var(--space-8);
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.03em;
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width 0.3s ease;
}

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

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

/* Mobile nav */
@media (max-width: 640px) {
  .nav__links {
    gap: var(--space-4);
  }
  .nav__links a {
    font-size: var(--text-xs);
  }
}

/* ===================================================================
   HERO
   =================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(45,74,62,0.4) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 30% 70%, rgba(26,46,26,0.6) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 70% 30%, rgba(45,74,62,0.3) 0%, transparent 50%),
    var(--color-bg);
}

.hero__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(13,26,13,0.3) 0%, transparent 30%, transparent 70%, rgba(13,26,13,0.8) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  max-width: var(--content-wide);
  padding: var(--space-8) var(--space-6);
}

.hero__book {
  flex-shrink: 0;
}

.hero__cover {
  width: clamp(200px, 25vw, 360px);
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.6),
    0 0 60px rgba(196,162,101,0.12);
  animation: bookFloat 6s ease-in-out infinite;
}

@keyframes bookFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-3);
}

.hero__subtitle {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 300;
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
}

.hero__author {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-10);
}

.hero__cta {
  /* Inherits from .btn .btn--primary */
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: var(--color-text-faint);
  animation: scrollPulse 2.5s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.7; transform: translateX(-50%) translateY(6px); }
}

/* Hero responsive */
@media (max-width: 768px) {
  .hero__content {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--space-16) + var(--space-8));
  }
  .hero__text {
    align-items: center;
  }
  .hero__cover {
    width: clamp(180px, 50vw, 280px);
  }
}

/* ===================================================================
   BUTTONS
   =================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-sm);
  cursor: pointer;
  letter-spacing: 0.04em;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #0d1a0d;
  border: 1px solid var(--color-gold);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  box-shadow: 0 0 24px rgba(196,162,101,0.3);
  transform: translateY(-1px);
}

/* ===================================================================
   SECTION: LE LIVRE
   =================================================================== */

.section--book {
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(26,46,26,0.4) 0%, transparent 70%),
    var(--color-surface);
}

.book-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.book-grid__cover {
  position: sticky;
  top: 6rem;
}

.book-cover-img {
  width: clamp(200px, 22vw, 320px);
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg), var(--shadow-gold);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
  letter-spacing: 0.03em;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-8);
}

.meta-sep {
  color: var(--color-gold);
  font-size: 1.2em;
}

.book-quote {
  border-left: 2px solid var(--color-gold);
  padding-left: var(--space-6);
  margin-bottom: var(--space-8);
}

.book-quote p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  font-weight: 300;
  color: var(--color-gold-light);
  line-height: 1.5;
}

.book-description p {
  margin-bottom: var(--space-4);
  color: var(--color-text);
  line-height: 1.7;
}

.book-description__italic {
  color: var(--color-text-muted);
  margin-top: var(--space-6);
}

/* Mobile */
@media (max-width: 768px) {
  .book-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: left;
  }
  .book-grid__cover {
    position: static;
  }
  .book-cover-img {
    width: clamp(180px, 50vw, 260px);
  }
}

/* ===================================================================
   SECTION: EXTRAIT
   =================================================================== */

.section--extrait {
  background:
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(45,74,62,0.2) 0%, transparent 60%),
    var(--color-bg);
  border-top: 1px solid rgba(45,74,62,0.2);
  border-bottom: 1px solid rgba(45,74,62,0.2);
}

.extrait__chapheading {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.extrait__text {
  position: relative;
}

.extrait__text p {
  margin-bottom: var(--space-6);
  color: var(--color-text);
  line-height: 1.8;
  font-size: var(--text-base);
}

.extrait__text p:nth-child(2) {
  /* "Après, plus rien ne fut normal." — emphasis */
  font-style: italic;
  color: var(--color-gold);
}

.extrait__emphasis {
  font-style: italic;
  color: var(--color-gold-light) !important;
  font-size: var(--text-lg) !important;
  padding-block: var(--space-4);
}

.extrait__ellipsis {
  text-align: center;
  font-size: var(--text-2xl);
  color: var(--color-text-faint);
  letter-spacing: 0.5em;
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.extrait__cta {
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-gold);
  margin-top: var(--space-8);
}

/* ===================================================================
   SECTION: L'AUTEUR
   =================================================================== */

.section--auteur {
  background: var(--color-surface);
}

.auteur-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-12));
  align-items: start;
}

.auteur-grid__icon {
  opacity: 0.7;
}

.auteur-grid__text p {
  color: var(--color-text);
  line-height: 1.8;
  font-size: var(--text-base);
}

.auteur-grid__text em {
  color: var(--color-gold);
  font-style: italic;
}

@media (max-width: 640px) {
  .auteur-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .auteur-grid__icon svg {
    width: 80px;
    height: 80px;
  }
}

/* ===================================================================
   SECTION: COMMANDER
   =================================================================== */

.section--commander {
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(45,74,62,0.25) 0%, transparent 70%),
    var(--color-bg);
  text-align: center;
}

.commander-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.commander-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.3s ease;
}

.commander-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold), var(--shadow-md);
  transform: translateY(-4px);
}

.commander-card__format {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.commander-card__price {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-gold);
}

.commander-card__action {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.commander-card:hover .commander-card__action {
  color: var(--color-gold);
}

.commander-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

@media (max-width: 480px) {
  .commander-cards {
    grid-template-columns: 1fr;
    max-width: 280px;
  }
}

/* ===================================================================
   SECTION: AVIS DE LECTEURS
   =================================================================== */

.section--avis {
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(45,74,62,0.2) 0%, transparent 70%),
    var(--color-bg);
  border-top: 1px solid rgba(45,74,62,0.2);
}

.section--avis::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: 0 auto var(--space-12);
}

.avis-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.avis-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.avis-card:hover {
  border-color: var(--color-gold-dark);
  box-shadow: 0 0 20px rgba(196,162,101,0.08);
}

.avis-card__stars {
  color: var(--color-gold);
  font-size: var(--text-base);
  letter-spacing: 0.1em;
}

.avis-card__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.7;
  flex: 1;
  font-style: italic;
}

.avis-card__author {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-gold);
  letter-spacing: 0.04em;
  margin-top: auto;
}

@media (max-width: 768px) {
  .avis-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .avis-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Avis form */
.avis-form-box {
  max-width: 560px;
  margin-inline: auto;
  text-align: center;
  padding: var(--space-8);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse 80% 80% at 50% 50%, rgba(45,74,62,0.15) 0%, transparent 60%),
    var(--color-surface-2);
}

.avis-form-box__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-gold);
  margin-bottom: var(--space-6);
  letter-spacing: 0.03em;
}

.avis-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

.avis-form__row {
  width: 100%;
}

.avis-form__input,
.avis-form__textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  box-sizing: border-box;
}

.avis-form__input::placeholder,
.avis-form__textarea::placeholder {
  color: var(--color-text-faint);
}

.avis-form__input:focus,
.avis-form__textarea:focus {
  border-color: var(--color-gold);
  outline: none;
  box-shadow: 0 0 0 3px rgba(196,162,101,0.15);
}

.avis-form__textarea {
  resize: vertical;
  min-height: 80px;
}

.avis-form__stars {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}

.avis-star {
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--color-text-faint);
  cursor: pointer;
  padding: var(--space-1);
  transition: color 0.2s ease, transform 0.2s ease;
  line-height: 1;
}

.avis-star:hover,
.avis-star.active {
  color: var(--color-gold);
  transform: scale(1.15);
}

.avis-form__btn {
  margin-top: var(--space-2);
}

.avis-form__success {
  font-size: var(--text-sm);
  color: var(--color-gold);
  font-style: italic;
  margin-top: var(--space-2);
}

/* ===================================================================
   SECTION: NEWSLETTER
   =================================================================== */

.section--newsletter {
  background: var(--color-surface);
  border-top: 1px solid rgba(45,74,62,0.2);
}

.newsletter-box {
  text-align: center;
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse 80% 80% at 50% 50%, rgba(45,74,62,0.15) 0%, transparent 60%),
    var(--color-surface-2);
}

.newsletter-box__sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.newsletter-form__row {
  display: flex;
  gap: var(--space-3);
  max-width: 420px;
  margin-inline: auto;
}

.newsletter-form__input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.newsletter-form__input::placeholder {
  color: var(--color-text-faint);
}

.newsletter-form__input:focus {
  border-color: var(--color-gold);
  outline: none;
  box-shadow: 0 0 0 3px rgba(196,162,101,0.15);
}

.newsletter-form__btn {
  white-space: nowrap;
  text-align: center;
  justify-content: center;
}

.newsletter-form__success {
  font-size: var(--text-sm);
  color: var(--color-gold);
  margin-top: var(--space-4);
  font-style: italic;
}

@media (max-width: 480px) {
  .newsletter-form__row {
    flex-direction: column;
  }
  .newsletter-form__btn {
    width: 100%;
    text-align: center;
    display: flex;
    justify-content: center;
  }
}

/* ===================================================================
   FOOTER
   =================================================================== */

.footer {
  padding-block: var(--space-12);
  background: var(--color-bg);
  border-top: 1px solid rgba(45,74,62,0.2);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  text-align: center;
}

.footer__copy,
.footer__contact,
.footer__pplx {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__contact a,
.footer__pplx a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__contact a:hover,
.footer__pplx a:hover {
  color: var(--color-gold);
}

/* ===================================================================
   SCROLL REVEAL
   =================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ===================================================================
   FIREFLY PARTICLES (generated in JS)
   =================================================================== */

.firefly {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform, opacity;
}

.firefly--glow {
  background: radial-gradient(circle, rgba(232,200,120,0.8) 0%, rgba(196,162,101,0.3) 40%, transparent 70%);
}

.firefly--soft {
  background: radial-gradient(circle, rgba(232,200,120,0.4) 0%, rgba(196,162,101,0.1) 50%, transparent 70%);
}

/* ===================================================================
   DECORATIVE DIVIDER
   =================================================================== */

.section--extrait::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: 0 auto var(--space-12);
}

.section--auteur::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  margin: 0 auto var(--space-12);
}

.section--commander .section__title::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin: var(--space-4) auto 0;
}

/* ===================================================================
   Book Themes Section (SEO)
   =================================================================== */
.book-themes {
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gold-dim);
}

.book-themes__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
  letter-spacing: 0.03em;
}

.book-themes__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.book-themes__list li {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-cream-dim);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-gold-dim);
  border-radius: 2rem;
  transition: border-color 0.3s ease, color 0.3s ease;
}

.book-themes__list li:hover {
  border-color: var(--color-gold);
  color: var(--color-cream);
}

/* Author SEO paragraph */
.auteur-seo {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-cream-dim);
  line-height: 1.7;
}