/*
Theme Name: Nattdias
Theme URI: https://example.com/monochrome
Author: Théau
Author URI: https://example.com
Description: Thème éditorial monochrome pour galeries photo personnelles. Noir et blanc, typographie sobre et chic (Cormorant Garamond + Inter), animations discrètes. Pages : Accueil, Galerie, Préface, Projets, Contact.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sitenatt
*/

/* ==========================================================================
   1. Variables (design tokens)
   ========================================================================== */
:root {
  /* Couleurs */
  --ink:      #0e0e0e;   /* noir typographique */
  --paper:    #ffffff;   /* blanc */
  --ash:      #6e6e6e;   /* texte secondaire */
  --line:     #e6e6e6;   /* filets fins */
  --panel:    #fafafa;   /* fond de section alterné, neutre */
  --overlay:  rgba(14, 14, 14, 0.96); /* lightbox */

  /* Typographie */
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Échelle d'espacement */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;

  /* Mise en page */
  --maxw: 1280px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --header-h: 78px;

  /* Transitions */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ==========================================================================
   2. Reset & base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: 0.005em;
  margin: 0 0 var(--space-3);
}

p { margin: 0 0 var(--space-3); }

::selection { background: var(--ink); color: var(--paper); }

/* Type scale fluide */
.display   { font-family: var(--serif); font-weight: 300; line-height: 1.02; font-size: clamp(3rem, 9vw, 7.5rem); }
.h1        { font-size: clamp(2.4rem, 6vw, 4.5rem); }
.h2        { font-size: clamp(1.9rem, 4vw, 3rem); }
.h3        { font-size: clamp(1.4rem, 2.5vw, 1.9rem); }

/* Étiquette : petit label sans-serif en capitales (signature typographique) */
.eyebrow {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ash);
  display: inline-block;
}

.lead {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  line-height: 1.45;
  color: var(--ink);
}

/* ==========================================================================
   3. Layout helpers
   ========================================================================== */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: 760px; }

.section { padding-block: var(--space-7); }
.section--tight { padding-block: var(--space-6); }
.section--panel { background: var(--panel); }

.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

.center { text-align: center; }

/* Boutons / liens d'action */
.btn {
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  padding: 1.05em 2.2em;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background .5s var(--ease), color .5s var(--ease), letter-spacing .5s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); letter-spacing: 0.26em; }
.btn--solid { background: var(--ink); color: var(--paper); }
.btn--solid:hover { background: transparent; color: var(--ink); }

.link-underline {
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 3px;
}
.link-underline::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--ease);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* ==========================================================================
   4. En-tête / navigation
   ========================================================================== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background .5s var(--ease), box-shadow .5s var(--ease), color .5s var(--ease);
  color: var(--ink);
}
.site-header .wrap {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
}
/* Variante transparente posée sur un héros sombre */
.site-header.is-overlay { color: var(--paper); }
.site-header.is-overlay .brand,
.site-header.is-overlay .nav a { color: var(--paper); }
.site-header.scrolled {
  background: var(--paper); color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}
.site-header.scrolled .brand,
.site-header.scrolled .nav a { color: var(--ink); }

.brand {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.55rem;
  letter-spacing: 0.06em;
}
.brand span { font-style: italic; }

.nav { display: flex; align-items: center; gap: clamp(1.2rem, 2.5vw, 2.4rem); }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(1.2rem, 2.5vw, 2.4rem); }
.nav a {
  font-size: 0.74rem; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  position: relative; padding: 4px 0;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.nav a:hover::after,
.nav .current-menu-item > a::after { transform: scaleX(1); transform-origin: left; }

/* Burger mobile */
.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 30px; height: 22px; position: relative; color: inherit;
}
.nav-toggle span {
  position: absolute; left: 0; width: 100%; height: 1.5px; background: currentColor;
  transition: transform .4s var(--ease), opacity .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 2px; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 18px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ==========================================================================
   5. Héros
   ========================================================================== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: flex-end;
  color: var(--paper);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: -1; }
.hero__media img,
.hero__media .placeholder { width: 100%; height: 100%; object-fit: cover; }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(14,14,14,.55) 0%, rgba(14,14,14,.1) 45%, rgba(14,14,14,.25) 100%);
}
.hero .placeholder {
  background: linear-gradient(135deg, #1a1a1a 0%, #0e0e0e 60%, #242424 100%);
}
.hero__inner { width: 100%; padding-bottom: clamp(3rem, 8vh, 6rem); }
.hero__kicker { color: rgba(255,255,255,.85); margin-bottom: var(--space-3); }
.hero__title { color: var(--paper); margin-bottom: var(--space-3); max-width: 16ch; }
.hero__sub { max-width: 46ch; color: rgba(255,255,255,.85); font-family: var(--serif); font-size: clamp(1.2rem,2vw,1.6rem); font-weight: 300; }

.hero__scroll {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-size: 0.65rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: rgba(255,255,255,.7); display: flex; flex-direction: column; align-items: center; gap: .6rem;
}
.hero__scroll::after { content: ""; width: 1px; height: 38px; background: rgba(255,255,255,.5); animation: scrollLine 2.2s var(--ease) infinite; }
@keyframes scrollLine { 0% { transform: scaleY(0); transform-origin: top; } 45% { transform: scaleY(1); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* En-tête de page interne (sans image) */
.page-head { padding-top: calc(var(--header-h) + var(--space-6)); padding-bottom: var(--space-5); }
.page-head .eyebrow { margin-bottom: var(--space-3); }
.page-head__index { font-family: var(--sans); font-size: .72rem; letter-spacing: .28em; color: var(--ash); }

/* ==========================================================================
   6. Grille de galeries / projets
   ========================================================================== */
.index-list { display: grid; gap: var(--space-1); }

/* Carte « index éditorial » : numéro + titre + vignette au survol */
.index-item {
  display: grid; grid-template-columns: 5rem 1fr auto; align-items: center;
  gap: var(--space-3); padding: var(--space-4) 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.index-list .index-item:last-child { border-bottom: 1px solid var(--line); }
.index-item__num { font-family: var(--sans); font-size: .8rem; letter-spacing: .2em; color: var(--ash); }
.index-item__title { font-family: var(--serif); font-weight: 300; font-size: clamp(1.8rem, 4vw, 3rem); transition: transform .5s var(--ease); }
.index-item__meta { font-family: var(--sans); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ash); }
.index-item:hover .index-item__title { transform: translateX(18px); }
.index-item__thumb {
  position: absolute; right: 9rem; top: 50%; width: 230px; height: 150px;
  transform: translateY(-50%) scale(.96); object-fit: cover;
  opacity: 0; pointer-events: none; transition: opacity .5s var(--ease), transform .5s var(--ease);
  z-index: 5;
}
.index-item:hover .index-item__thumb { opacity: 1; transform: translateY(-50%) scale(1); }

/* Grille classique de vignettes (archives + accueil) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(1rem, 2.5vw, 2.2rem);
}
.card { display: block; }
.card__media { position: relative; overflow: hidden; aspect-ratio: 4 / 5; background: var(--panel); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.card:hover .card__media img { transform: scale(1.05); }
.card__media .placeholder { width: 100%; height: 100%; background: linear-gradient(135deg,#ececec,#dcdcdc); }
.card__body { padding-top: var(--space-2); display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.card__title { font-family: var(--serif); font-weight: 400; font-size: 1.4rem; }
.card__meta { font-size: .68rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ash); white-space: nowrap; }

/* ==========================================================================
   7. Galerie photo (single) + lightbox
   ========================================================================== */
.photo-grid { columns: 3; column-gap: clamp(.75rem, 2vw, 1.5rem); }
.photo-grid figure { margin: 0 0 clamp(.75rem, 2vw, 1.5rem); break-inside: avoid; overflow: hidden; }
.photo-grid img { width: 100%; cursor: zoom-in; transition: transform 1s var(--ease), opacity .9s var(--ease); }
.photo-grid figure:hover img { transform: scale(1.04); }

/* Blocs galerie natifs de WordPress, harmonisés */
.entry-content .wp-block-gallery img,
.entry-content img { cursor: zoom-in; }

.lightbox {
  position: fixed; inset: 0; z-index: 1000; display: none;
  background: var(--overlay);
  align-items: center; justify-content: center;
  opacity: 0; transition: opacity .4s var(--ease);
}
.lightbox.open { display: flex; opacity: 1; }
.lightbox img { max-width: 90vw; max-height: 86vh; object-fit: contain; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.lightbox__close, .lightbox__nav {
  position: absolute; background: none; border: 0; color: var(--paper);
  cursor: pointer; font-family: var(--sans); letter-spacing: .1em;
  opacity: .7; transition: opacity .3s var(--ease);
}
.lightbox__close { top: 2rem; right: 2.4rem; font-size: 1rem; letter-spacing: .25em; text-transform: uppercase; }
.lightbox__nav { top: 50%; transform: translateY(-50%); width: 60px; height: 60px; font-size: 1.6rem; }
.lightbox__nav--prev { left: 2rem; }
.lightbox__nav--next { right: 2rem; }
.lightbox__close:hover, .lightbox__nav:hover { opacity: 1; }
.lightbox__count { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.7); font-size: .72rem; letter-spacing: .25em; }

/* ==========================================================================
   8. Préface (page éditoriale) & contenu riche
   ========================================================================== */
.prose { max-width: 680px; }
.prose p { font-size: 1.18rem; line-height: 1.85; }
.prose p:first-of-type::first-letter {
  font-family: var(--serif); font-size: 4.2rem; line-height: .8;
  float: left; padding: .08em .12em 0 0; font-weight: 300;
}
.prose h2, .prose h3 { margin-top: var(--space-5); }
.prose blockquote {
  margin: var(--space-5) 0; padding-left: var(--space-3);
  border-left: 1px solid var(--ink);
  font-family: var(--serif); font-size: 1.6rem; font-weight: 300; line-height: 1.4; font-style: italic;
}
.signature { font-family: var(--serif); font-style: italic; font-size: 1.3rem; color: var(--ash); margin-top: var(--space-4); }

/* Disposition en deux colonnes texte/visuel */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.split__media { aspect-ratio: 4/5; overflow: hidden; background: var(--panel); }
.split__media img { width: 100%; height: 100%; object-fit: cover; }

/* ==========================================================================
   9. Contact
   ========================================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); }
.contact-info p { color: var(--ash); }
.contact-info a { color: var(--ink); }
.contact-info .detail { margin-bottom: var(--space-4); }
.contact-info .detail .eyebrow { display: block; margin-bottom: .6rem; }
.contact-info .detail .value { font-family: var(--serif); font-size: 1.5rem; color: var(--ink); }

.field { margin-bottom: var(--space-3); }
.field label {
  display: block; font-size: .68rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--ash); margin-bottom: .6rem;
}
.field input, .field textarea {
  width: 100%; border: 0; border-bottom: 1px solid var(--line);
  background: transparent; padding: .8rem 0; font-family: var(--sans); font-size: 1rem; color: var(--ink);
  transition: border-color .4s var(--ease);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--ink); }
.field textarea { resize: vertical; min-height: 130px; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-note { padding: 1rem 1.2rem; margin-bottom: var(--space-3); font-size: .9rem; border: 1px solid var(--line); }
.form-note--ok { border-color: var(--ink); }
.form-note--err { border-color: #b00020; color: #b00020; }

/* ==========================================================================
   10. Pied de page
   ========================================================================== */
.site-footer { border-top: 1px solid var(--line); padding-block: var(--space-6) var(--space-4); }
.site-footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: var(--space-4); align-items: start; }
.footer-brand { font-family: var(--serif); font-size: 2rem; font-weight: 300; }
.footer-tag { color: var(--ash); max-width: 34ch; margin-top: var(--space-2); }
.footer-social { display: flex; gap: var(--space-3); }
.footer-social a { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; }
.footer-bottom { margin-top: var(--space-5); padding-top: var(--space-3); border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 1rem; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ash); }

/* ==========================================================================
   11. Animations au scroll
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* Apparition du héros au chargement */
.hero__kicker, .hero__title, .hero__sub { opacity: 0; transform: translateY(18px); animation: heroIn 1.1s var(--ease) forwards; }
.hero__title { animation-delay: .15s; }
.hero__sub { animation-delay: .3s; }
@keyframes heroIn { to { opacity: 1; transform: none; } }

/* ==========================================================================
   12. Responsive
   ========================================================================== */
@media (max-width: 900px) {
  .photo-grid { columns: 2; }
  .split, .contact-grid { grid-template-columns: 1fr; }
  .index-item__thumb { display: none; }
  .index-item { grid-template-columns: 3rem 1fr; }
  .index-item__meta { display: none; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .photo-grid { columns: 1; }
  .site-footer .wrap { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }

  .nav-toggle { display: block; z-index: 110; }
  .nav ul {
    position: fixed; inset: 0; background: var(--paper); color: var(--ink);
    flex-direction: column; align-items: center; justify-content: center;
    gap: var(--space-4); transform: translateY(-100%); transition: transform .5s var(--ease);
  }
  .nav.open ul { transform: none; }
  .nav.open a { color: var(--ink); font-size: 1rem; }
}

/* ==========================================================================
   13. Accessibilité
   ========================================================================== */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 3px;
}
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: 1rem; z-index: 999; }
.skip-link:focus { left: 0; }

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

/* ==========================================================================
   14. One-page : diaporama héros, projets, ancrage, menu actif
   ========================================================================== */

/* Décalage d'ancre sous l'en-tête fixe */
html { scroll-padding-top: var(--header-h); }
section[id] { scroll-margin-top: var(--header-h); }

/* Lien du menu actif (scrollspy) */
.nav a.active::after { transform: scaleX(1); transform-origin: left; }

/* --- Diaporama du héros --- */
.hero-slides { position: absolute; inset: 0; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.6s var(--ease); }
.hero-slide.active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }

.hero-dots { position: absolute; bottom: 2rem; right: var(--gutter); display: flex; gap: .7rem; z-index: 3; }
.hero-dot {
  width: 9px; height: 9px; border-radius: 50%; padding: 0;
  border: 1px solid rgba(255,255,255,.75); background: transparent; cursor: pointer;
  transition: background .4s var(--ease), transform .4s var(--ease);
}
.hero-dot.active { background: #fff; }
.hero-dot:hover { transform: scale(1.25); }

a.hero__scroll { text-decoration: none; }

/* --- Liste de projets : photo à gauche, texte à droite --- */
.project-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
}
.project-row:last-of-type { border-bottom: 1px solid var(--line); }
.project-row__media { overflow: hidden; aspect-ratio: 4 / 3; background: var(--panel); }
.project-row__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.project-row:hover .project-row__media img { transform: scale(1.04); }
.project-row__media .placeholder { width: 100%; height: 100%; background: linear-gradient(135deg,#ececec,#dcdcdc); }
.project-row__body p { color: var(--ash); max-width: 46ch; }

@media (max-width: 760px) {
  .project-row { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-dots { bottom: 1.2rem; }
}