/* =========================================================================
   En Plein Proust — Stylesheet principal
   Design : fond noir, typographie brutaliste, accents jaune fluo
   ========================================================================= */

:root {
  /* Couleurs */
  --c-bg: #0a0a0a;
  --c-bg-alt: #141414;
  --c-text: #f4f1ea;
  --c-text-muted: #9b9892;
  --c-text-faint: #595755;
  --c-accent: #f7ff00;
  --c-accent-warm: #ffd84a;
  --c-line: #2a2724;

  /* Typographies */
  --f-display: 'Chau Philomene One', 'Anton', 'Helvetica Neue', sans-serif;
  --f-body: 'Inter', 'Helvetica Neue', system-ui, sans-serif;
  --f-serif: 'Cormorant Garamond', Georgia, serif;

  /* Échelles */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2rem;
  --s-5: 3rem;
  --s-6: 5rem;
  --s-7: 8rem;

  /* Layout */
  --container: 1320px;
  --gutter: clamp(1rem, 4vw, 3rem);

  /* Animations */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Reset ---- */

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

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

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover { color: var(--c-accent); }

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

::selection {
  background: var(--c-accent);
  color: var(--c-bg);
}

/* ---- Typographies ---- */

.display {
  font-family: var(--f-display);
  font-weight: 400;
  text-transform: uppercase;
  line-height: 0.92;
  letter-spacing: 0.005em;
  margin: 0;
}

.display--xxl  { font-size: clamp(4.5rem, 16vw, 16rem); }
.display--xl   { font-size: clamp(3rem, 9vw, 8rem); }
.display--lg   { font-size: clamp(2.2rem, 6vw, 5rem); }
.display--md   { font-size: clamp(1.6rem, 3.5vw, 2.8rem); }
.display--sm   { font-size: clamp(1.1rem, 2vw, 1.4rem); letter-spacing: 0.04em; }

.eyebrow {
  font-family: var(--f-display);
  font-size: 0.95rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--c-text-muted);
  margin: 0 0 var(--s-3);
}

.serif {
  font-family: var(--f-serif);
  font-weight: 400;
  font-size: 1.35rem;
  line-height: 1.5;
}

.serif em { font-style: italic; }

.lead {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--c-text);
  max-width: 56ch;
}

/* ---- Layout primitives ---- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(var(--s-5), 8vw, var(--s-7));
}

.divider {
  height: 1px;
  background: var(--c-line);
  border: none;
  margin: 0;
}

.tag {
  display: inline-block;
  padding: 0.35em 0.85em;
  border: 1px solid var(--c-line);
  font-family: var(--f-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
}

/* ---- Header / nav ---- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--c-bg) 80%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.site-header.is-scrolled { border-bottom-color: var(--c-line); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  padding-block: var(--s-2);
}

.site-logo {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1;
}

.site-logo span { color: var(--c-accent); }

.site-nav {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2.2rem);
  font-family: var(--f-display);
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav a {
  position: relative;
  color: var(--c-text-muted);
  padding-block: 0.4rem;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--c-text);
}

.site-nav a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--c-accent);
}

/* Burger button (mobile) */
.site-nav__toggle {
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  position: relative;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 60;
}

.site-nav__toggle-bar {
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  height: 2px;
  background: var(--c-text);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease), top 0.3s var(--ease);
}

.site-nav__toggle-bar:nth-child(1) { top: 0.7rem; }
.site-nav__toggle-bar:nth-child(2) { top: 1.15rem; }
.site-nav__toggle-bar:nth-child(3) { top: 1.6rem; }

.site-nav__toggle.is-open .site-nav__toggle-bar:nth-child(1) {
  top: 1.15rem;
  transform: rotate(45deg);
}
.site-nav__toggle.is-open .site-nav__toggle-bar:nth-child(2) { opacity: 0; }
.site-nav__toggle.is-open .site-nav__toggle-bar:nth-child(3) {
  top: 1.15rem;
  transform: rotate(-45deg);
}

/* Backdrop derrière le menu mobile */
.site-nav__backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  border: none;
  padding: 0;
  z-index: 45;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease);
  cursor: pointer;
}

.site-nav__backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 800px) {
  .site-header__inner { padding-block: 0.6rem; }

  .site-nav {
    position: fixed;
    top: calc(var(--header-h, 3.6rem) + 0.4rem);
    right: 0.6rem;
    left: 0.6rem;
    flex-direction: column;
    align-items: flex-start;
    background: var(--c-bg);
    border: 1px solid var(--c-line);
    padding: var(--s-3) var(--s-4);
    gap: var(--s-2);
    font-size: 1.1rem;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
    z-index: 55;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    display: block;
    padding-block: 0.5rem;
  }

  .site-nav__toggle { display: inline-flex; }
  .site-nav__backdrop { display: block; }
}

/* ---- Portrait fixe (toutes les pages sauf home) ---- */

.page-portrait {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: clamp(260px, 32vw, 460px);
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.page-portrait img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: right center;
  filter: contrast(1.05) brightness(0.92);
}

.page-portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    var(--c-bg) 0%,
    rgba(10, 10, 10, 0.92) 8%,
    rgba(10, 10, 10, 0.4) 25%,
    transparent 55%);
  pointer-events: none;
  z-index: 2;
}

/* Décale le contenu des pages non-home pour qu'il ne passe pas
   sous le portrait sur grand écran. */
main.has-page-portrait {
  position: relative;
  z-index: 1;
}

@media (min-width: 1100px) {
  main.has-page-portrait .container {
    margin-left: var(--gutter);
    margin-right: 0;
    max-width: min(var(--container), calc(100vw - clamp(260px, 32vw, 460px) - var(--gutter)));
  }
}

@media (max-width: 900px) {
  .page-portrait { display: none; }
}

/* ---- Hero (homepage) ---- */

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: stretch;
  overflow: hidden;
}

.hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--s-5) var(--gutter);
  z-index: 2;
}

.hero__eyebrow {
  font-family: var(--f-display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-text-muted);
  margin-bottom: var(--s-4);
}

.hero__title {
  margin: 0 0 var(--s-3);
}

.hero__title .ligne { display: block; }
.hero__title .ligne--accent { color: var(--c-accent); }

.hero__sub {
  font-family: var(--f-serif);
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  color: var(--c-text-muted);
  max-width: 32ch;
  margin: var(--s-3) 0 var(--s-5);
  font-style: italic;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
  font-family: var(--f-display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
}

.hero__meta strong {
  display: block;
  color: var(--c-text);
  font-weight: 400;
  margin-top: 0.2rem;
  font-size: 1.15rem;
}

.hero__cta {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  flex-wrap: wrap;
}

.hero__portrait {
  position: relative;
  background: var(--c-bg-alt);
}

.hero__portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: contrast(1.05) brightness(0.95);
}

.hero__portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--c-bg) 0%, transparent 22%);
  pointer-events: none;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero__portrait {
    aspect-ratio: 4/5;
    order: -1;
  }
  .hero__content { padding-block: var(--s-5); }
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 1.1em 2em;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--c-accent);
  color: var(--c-bg);
  border: 1px solid var(--c-accent);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
  white-space: nowrap;
}

.btn:hover {
  background: var(--c-text);
  border-color: var(--c-text);
  color: var(--c-bg);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-line);
}

.btn--ghost:hover {
  background: var(--c-text);
  color: var(--c-bg);
}

.btn::after {
  content: "→";
  display: inline-block;
  transition: transform 0.25s var(--ease);
}

.btn:hover::after { transform: translateX(4px); }

/* ---- Manifeste / sections ---- */

.manifeste {
  max-width: 70ch;
  margin: 0 auto;
}

.manifeste p {
  font-family: var(--f-serif);
  font-size: clamp(1.3rem, 2.2vw, 1.8rem);
  line-height: 1.4;
  margin: 0 0 var(--s-3);
}

.manifeste .signature {
  display: block;
  margin-top: var(--s-4);
  font-family: var(--f-body);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-text-muted);
}

/* ---- Stats grid ---- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--s-2);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.stats__item {
  padding: var(--s-4) var(--s-3);
  border-right: 1px solid var(--c-line);
}

.stats__item:last-child { border-right: none; }

.stats__value {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1;
  margin: 0 0 0.4rem;
}

.stats__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-text-muted);
}

@media (max-width: 700px) {
  .stats__item { border-right: none; border-bottom: 1px solid var(--c-line); }
  .stats__item:last-child { border-bottom: none; }
}

/* ---- Editions grid ---- */

.editions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-4);
}

.edition-card {
  display: block;
  padding: var(--s-4) var(--s-3);
  border: 1px solid var(--c-line);
  background: var(--c-bg-alt);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
  text-decoration: none;
  color: inherit;
}

.edition-card:hover {
  background: var(--c-bg);
  border-color: var(--c-accent);
  transform: translateY(-4px);
  color: inherit;
}

.edition-card__cover {
  aspect-ratio: 3/4;
  background: var(--c-bg);
  margin-bottom: var(--s-3);
  overflow: hidden;
}

.edition-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.edition-card__year {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1;
  color: var(--c-accent);
}

.edition-card__tome {
  font-family: var(--f-display);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-block: var(--s-1);
}

.edition-card__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: 1.4rem;
  line-height: 1.05;
  text-transform: uppercase;
  margin: 0;
}

/* ---- Edition detail ---- */

.edition-header {
  padding-block: clamp(var(--s-5), 8vw, var(--s-7));
  border-bottom: 1px solid var(--c-line);
}

.edition-header__year {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(5rem, 12vw, 12rem);
  line-height: 0.85;
  color: var(--c-accent);
  margin: 0;
}

.edition-header__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 6vw, 5rem);
  text-transform: uppercase;
  line-height: 0.9;
  margin: var(--s-2) 0 var(--s-4);
}

.edition-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  font-family: var(--f-display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
}

.edition-header__meta strong {
  display: block;
  color: var(--c-text);
  font-weight: 600;
  margin-top: 0.3rem;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--f-serif);
  font-size: 1.1rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-1);
}

.gallery img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.temoignage {
  border-left: 2px solid var(--c-accent);
  padding: 0 0 0 var(--s-3);
  margin-block: var(--s-4);
}

.temoignage__texte {
  font-family: var(--f-serif);
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  line-height: 1.5;
  font-style: italic;
}

.temoignage__auteur {
  display: block;
  margin-top: var(--s-2);
  font-family: var(--f-display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
}

.audio-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.audio-list li {
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--c-line);
}

.audio-list audio { width: 100%; margin-top: var(--s-2); }

/* ---- Section titles ---- */

.section-title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.5rem);
  text-transform: uppercase;
  line-height: 0.95;
  margin: 0 0 var(--s-4);
}

.section-title__accent { color: var(--c-accent); }

/* ---- Long form text (fonctionnement, témoignages) ---- */

.prose {
  max-width: 64ch;
  margin: 0 auto;
}

.prose p {
  font-family: var(--f-serif);
  font-size: clamp(1.1rem, 1.4vw, 1.3rem);
  line-height: 1.55;
  margin: 0 0 var(--s-3);
}

.prose h2 {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-transform: uppercase;
  margin: var(--s-5) 0 var(--s-3);
}

.prose blockquote {
  margin: var(--s-4) 0;
  padding-left: var(--s-3);
  border-left: 2px solid var(--c-accent);
  font-family: var(--f-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  color: var(--c-text);
}

.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: 0.5em; }

/* ---- Form (inscription) ---- */

.form {
  max-width: 720px;
  margin: 0 auto;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
  margin-bottom: var(--s-3);
}

.form__field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form__field--full { grid-column: 1 / -1; }

.form__label {
  font-family: var(--f-display);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-muted);
}

.form__label .required { color: var(--c-accent); }

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.9em 1em;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 1rem;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background: var(--c-bg);
}

.form__textarea { min-height: 120px; resize: vertical; }

.form__creneaux {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.6rem;
}

.form__creneau {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85em 1em;
  border: 1px solid var(--c-line);
  background: var(--c-bg-alt);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.form__creneau:hover { border-color: var(--c-text-muted); }

.form__creneau input { accent-color: var(--c-accent); }

.form__creneau.is-selected {
  border-color: var(--c-accent);
  background: color-mix(in srgb, var(--c-accent) 10%, var(--c-bg-alt));
}

.form__hint {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  margin-top: 0.4rem;
}

.form__hint--warn { color: var(--c-accent); }

.form__rgpd {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--c-text-muted);
}

.form__rgpd input { margin-top: 0.25rem; accent-color: var(--c-accent); }

.form__messages {
  padding: var(--s-2);
  margin-bottom: var(--s-3);
  border: 1px solid var(--c-line);
  font-size: 0.95rem;
}

.form__messages--ok { border-color: var(--c-accent); color: var(--c-accent); }
.form__messages--err { border-color: #ff6b6b; color: #ff6b6b; }

@media (max-width: 600px) {
  .form__row { grid-template-columns: 1fr; }
}

/* ---- Footer ---- */

.site-footer {
  position: relative;
  z-index: 2;
  padding-block: var(--s-5);
  border-top: 1px solid var(--c-line);
  background: var(--c-bg-alt);
  font-size: 0.9rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--s-4);
}

.site-footer__col h3 {
  font-family: var(--f-display);
  font-weight: 400;
  text-transform: uppercase;
  font-size: 1rem;
  margin: 0 0 var(--s-2);
  letter-spacing: 0.04em;
}

.site-footer__col p,
.site-footer__col li {
  color: var(--c-text-muted);
  line-height: 1.6;
}

.site-footer__col ul { list-style: none; padding: 0; margin: 0; }

.site-footer__partners {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
  font-family: var(--f-display);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-faint);
}

.site-footer__bottom {
  margin-top: var(--s-4);
  padding-top: var(--s-3);
  border-top: 1px solid var(--c-line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-2);
  font-family: var(--f-display);
  font-size: 0.95rem;
  color: var(--c-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

@media (max-width: 700px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

/* ---- Reveal on scroll ---- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---- Utilities ---- */

.center-text { text-align: center; }
.muted { color: var(--c-text-muted); }
.accent { color: var(--c-accent); }
.serif-italic { font-family: var(--f-serif); font-style: italic; }