/* ============================================================
   OUVERTA — feuille de style du site
   Système hérité de Navhera v2 « Papel y Tinta » (tokens.css),
   adapté au produit Ouverta. Règles non négociables :
   — un seul couleur d'action (bouteille) ;
   — cuadros plats, bordure 1px, zéro ombre ;
   — la signature est LE fil de contrôle (ligne pointillée + coches),
     jamais la ligne de marée (réservée à Navhera) ;
   — contraste AA minimum partout, AAA pour le corps de texte ;
   — zéro requête externe : polices auto-hébergées, zéro traqueur.
   ============================================================ */

/* ---------- Polices auto-hébergées (RGPD : pas de Google Fonts distant) ---------- */
@font-face {
  font-family: "Fraunces";
  src: url("fonts/fraunces-var.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("fonts/fraunces-italic-var.woff2") format("woff2");
  font-weight: 400 600;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/plex-sans-var.woff2") format("woff2");
  font-weight: 100 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  --papel: #f4f0e6;
  --hueso: #fbf9f2;
  --arena: #ede6d4;
  --tinte: #e5ebdf;
  --tinta: #1d1f1c;
  --gris: #565a50;            /* 6.4:1 sur papel */
  --botella: #35553f;         /* l'UNIQUE couleur d'action — 7.3:1 en texte */
  --botella-osc: #2a4232;
  --eucalipto: #8ca08d;
  --on-botella: #f1efe3;      /* 7.2:1 sur bouteille */
  --consola: #1d1f1c;
  --consola-text: #d8d3c5;
  --border: rgba(29, 31, 28, 0.22);
  --border-soft: rgba(29, 31, 28, 0.13);
  --err: #8a3b32;
  --warn: #66501F;

  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease: cubic-bezier(0.23, 1, 0.32, 1);
  --container: 1080px;
  --section: clamp(72px, 10vw, 104px);

  /* tematizables */
  --accent-text: var(--botella);
  --accent-text-hover: var(--botella-osc);
  --focus: var(--botella);
  --fil-color: var(--eucalipto);
  --fil-opacity: 1;
  --btn-hover: var(--botella-osc);
  --ghost-border: var(--botella);
  --ghost-hover-bg: var(--tinte);
  --selection: rgba(53, 85, 63, 0.18);
  --apercu-filter: none;
  --hero-bg: #2a4232;
  --hero-text: #f1efe3;
  --hero-muted: rgba(241, 239, 227, 0.78);
  --hero-accent: #aecbb0;
  --hero-btn-bg: #f1efe3;
  --hero-btn-text: #1d1f1c;
  --hero-btn-hover: #ffffff;
  --footer-bg: var(--consola);
  --dark-eyebrow: var(--tinte);
  --reco-border: var(--botella);
  color-scheme: light;
}

/* Paleta nocturna — un solo bloque, aplicado por preferencia del sistema
   (salvo override manual) Y por elección explícita del visitante */
:root[data-theme="dark"] { --APPLY-DARK: 1; }


/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--selection); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-text); text-underline-offset: 3px; }
a:hover { color: var(--accent-text-hover); }
:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 5px;
}
h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 520;
  line-height: 1.1;
  letter-spacing: -0.014em;
  text-wrap: balance;
  margin: 0 0 0.4em;
}
h1 { font-size: clamp(2.5rem, 6vw, 4.1rem); line-height: 1.06; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.55rem); }
h3 { font-size: 1.35rem; }
p { margin: 0.5em 0; text-wrap: pretty; }
em { font-style: italic; } /* Fraunces italique : accent d'1 à 3 mots, jamais un paragraphe */
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: rgba(29, 31, 28, 0.06);
  padding: 1px 5px;
  border-radius: 5px;
}

/* ---------- Accessibilité ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  background: var(--botella);
  color: var(--on-botella);
  padding: 10px 18px;
  border-radius: 0 0 10px 10px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  text-decoration: none;
  transition: top 150ms var(--ease);
}
.skip-link:focus { top: 0; color: var(--on-botella); }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- Structure ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 clamp(18px, 4vw, 32px); }
section { padding-block: var(--section); scroll-margin-top: 86px; }
section + section { padding-top: 0; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin: 0 0 14px;
}
.lead { font-size: 1.0625rem; color: var(--gris); max-width: 62ch; }
.head-gap { margin-bottom: 48px; }

/* ---------- Nav ---------- */
header.site {
  border-bottom: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--papel) 88%, transparent);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 16px;
  flex-wrap: wrap;
}
.logo {
  font-family: var(--serif);
  font-weight: 560;
  font-size: 1.3rem;
  color: var(--tinta);
  text-decoration: none;
  letter-spacing: 0.005em;
}
.logo .dot { color: var(--accent-text); }
.logo-par {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gris);
  margin-left: 10px;
}
.nav-links { display: flex; gap: clamp(14px, 3vw, 30px); align-items: center; flex-wrap: wrap; }
.nav-links a {
  font-size: 0.875rem;
  color: var(--tinta);
  text-decoration: none;
}
.nav-links a:not(.btn), .nav-lang a { display: inline-block; padding-block: 10px; }
.nav-links a:hover { color: var(--botella); text-decoration: underline; }
.nav-lang { font-family: var(--mono); font-size: 0.71rem; letter-spacing: 0.08em; color: var(--gris); }
.nav-lang strong { color: var(--tinta); }
.nav-lang a { color: var(--accent-text); text-decoration: none; }
.nav-lang a:hover { text-decoration: underline; }
.nav-links a.btn--primary { color: var(--on-botella); }
.nav-links a.btn--primary:hover { color: var(--on-botella); text-decoration: none; }
@media (max-width: 640px) {
  header.site { position: static; }
  .nav { padding-block: 12px; row-gap: 8px; gap: 12px; }
  .logo { font-size: 1.15rem; }
  .logo-par { font-size: 0.625rem; margin-left: 7px; }
  .nav-links { gap: 8px 14px; }
  .nav-links a:not(.btn) { font-size: 0.8125rem; }
  .nav-links .btn { padding: 8px 14px; font-size: 0.8125rem; }
  .theme-btn { padding: 6px 9px; font-size: 0.6875rem; }
}

/* ---------- Boutons : si c'est cliquable, c'est bouteille ---------- */
.btn {
  display: inline-block;
  text-align: center;
  text-wrap: balance;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 10px;
  padding: 13px 26px;
  text-decoration: none;
  border: 1px solid var(--botella);
  transition: transform 220ms var(--ease), background 150ms var(--ease);
}
.btn--primary { background: var(--botella); color: var(--on-botella); }
.btn--primary:hover { background: var(--btn-hover); color: var(--on-botella); transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--accent-text); border-color: var(--ghost-border); }
.btn--ghost:hover { background: var(--ghost-hover-bg); transform: translateY(-2px); }

/* ---------- Le cuadro ---------- */
.cuadro {
  background: var(--hueso);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 28px;
  transition: transform 220ms var(--ease);
}
.cuadro--warm { background: var(--hueso); }
.cuadro--green { background: var(--hueso); }
.cuadro--dark { background: var(--botella); border-color: var(--botella); color: var(--on-botella); }
.cuadro--dark .eyebrow { color: var(--dark-eyebrow); }

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--produit { gap: 40px; }

/* ---------- Hero : bande bouteille pleine largeur ---------- */
.hero {
  background: var(--hero-bg);
  color: var(--hero-text);
  padding-block: clamp(72px, 10vw, 128px) clamp(56px, 8vw, 96px);
}
.hero .eyebrow { color: var(--hero-accent); }
.hero h1 { color: var(--hero-text); }
.hero h1 em { color: var(--hero-accent); }
.hero .lead { color: var(--hero-muted); }
.hero .btn--primary {
  background: var(--hero-btn-bg);
  color: var(--hero-btn-text);
  border-color: var(--hero-btn-bg);
}
.hero .btn--primary:hover { background: var(--hero-btn-hover); color: var(--hero-btn-text); }
.hero .hero-note { color: var(--hero-muted); }
.hero-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; }
.badge {
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.06em;
  border: 1px solid rgba(53, 85, 63, 0.35);
  color: var(--botella);
  background: var(--hueso);
  border-radius: 5px;
  padding: 5px 11px;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 32px; }
.hero-note { font-family: var(--mono); font-size: 0.75rem; color: var(--gris); margin-top: 14px; }

/* ---------- Fil de contrôle — LA signature (une seule par page) ---------- */
.fil-de-controle svg { width: 100%; height: 100%; display: block; }
@keyframes fil-drift { to { transform: translateX(-88px); } }
.fil-de-controle g { animation: fil-drift 16s linear infinite; }

/* ---------- Bande de confiance ---------- */
.trust {
  border-bottom: 1px solid var(--border-soft);
  padding-block: 20px;
  margin-top: 0;
}
.trust ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: clamp(14px, 3.5vw, 40px);
  flex-wrap: wrap;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gris);
}
.trust li::before { content: "— "; color: var(--eucalipto); }
.trust + section { padding-top: var(--section); }

/* ---------- Aperçu du produit ---------- */
.apercu {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--hueso);
}
.apercu img { filter: var(--apercu-filter); }
.apercu figcaption {
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  color: var(--gris);
  padding: 12px 16px;
  border-top: 1px solid var(--border-soft);
}

/* ---------- Étapes ---------- */
.cta-row { margin-top: 24px; }
.step-n {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent-text);
  display: block;
  margin-bottom: 10px;
}

/* ---------- Tarifs ---------- */
.tarif .prix { font-family: var(--serif); font-size: 2.6rem; font-weight: 520; line-height: 1; }
.tarif .prix small { font-family: var(--mono); font-size: 0.8125rem; color: var(--gris); font-weight: 400; }
.tarif ul { margin: 16px 0 0; padding-left: 20px; font-size: 0.875rem; }
.tarif li { margin-bottom: 8px; }
.tarif-note { font-family: var(--mono); font-size: 0.75rem; color: var(--gris); margin-top: 20px; }


/* ---------- Plan recomendado ---------- */
.tarif--reco { border: 1.5px solid var(--reco-border); position: relative; }
.reco-tag { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--on-botella); background: var(--botella); border-radius: 5px; padding: 3px 10px;
  position: absolute; top: -11px; left: 24px; }
.tarif .mas { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gris); margin: 16px 0 6px; }

/* ---------- Pasos sin caja (filete superior, estilo suizo) ---------- */
.steps { display: grid; gap: clamp(18px, 3vw, 36px); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.steps > div { border-top: 1px solid var(--border); padding-top: 16px; }
.steps h3 { font-size: 1.1rem; margin-bottom: 0.2em; }
.steps p { color: var(--gris); font-size: 0.9rem; margin: 0; }

/* ---------- Pull-quote de posición (sin caja: la postura no se viste de producto) ---------- */
.pullquote { max-width: 780px; margin: 0 auto; text-align: center; }
.pullquote .pq { font-family: var(--serif); font-weight: 520; font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.2; letter-spacing: -0.012em; text-wrap: balance; }
.pullquote .pq em { color: var(--accent-text); }
.pullquote p.sub { color: var(--gris); max-width: 58ch; margin: 14px auto 0; }

/* ---------- Firma humana ---------- */
.humain { font-size: 0.9rem; color: var(--gris); max-width: 52ch; margin: 18px auto 0; }
.humain strong { color: var(--tinta); }

/* ---------- FAQ ---------- */
details {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--hueso);
  padding: 0;
  margin-bottom: 12px;
}
summary {
  cursor: pointer;
  font-family: var(--serif);
  font-weight: 520;
  font-size: 1.05rem;
  padding: 18px 22px 18px 46px;
  list-style: none;
  position: relative;
}
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; position: absolute; left: 22px; font-family: var(--mono); color: var(--accent-text); }
details[open] summary::before { content: "\2013"; }
details[open] summary { border-bottom: 1px solid var(--border-soft); }
details .rep { padding: 16px 22px 20px; font-size: 0.9rem; color: var(--gris); max-width: 70ch; }

/* ---------- Footer consola ---------- */
footer.site {
  background: var(--footer-bg);
  color: var(--consola-text);
  margin-top: 0;
  padding-block: 56px 40px;
  font-size: 0.875rem;
}
footer.site a { color: #aecbb0; }
footer.site .cols { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
footer.site h2 {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #8ca08d;
  font-weight: 500;
  margin-bottom: 14px;
}
footer.site ul { list-style: none; margin: 0; padding: 0; }
footer.site li { margin-bottom: 8px; }
footer.site .legal-line {
  border-top: 1px solid rgba(216, 211, 197, 0.18);
  margin-top: 48px;
  padding-top: 24px;
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.04em;
  color: #9a998c;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Pages légales ---------- */
.doc-page { max-width: 760px; }
.doc-page h1 { font-size: clamp(2rem, 4.5vw, 2.9rem); }
.doc-page h2 { font-size: 1.4rem; margin-top: 2.2em; }
.doc-page p, .doc-page li { color: var(--tinta); font-size: 0.9375rem; }
.doc-meta { font-family: var(--mono); font-size: 0.75rem; color: var(--gris); }

/* ---------- Révélation au défilement (amélioration progressive) ---------- */
@supports (animation-timeline: view()) {
  .reveal {
    animation: reveal-up 1ms linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 35%;
  }
  @keyframes reveal-up {
    from { transform: translateY(34px); }
    to { transform: none; }
  }
}

/* ---------- Motion : la loi ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   MODO OSCURO — «la misma biblioteca, de noche»
   Se aplica por preferencia del sistema (sin override) o por
   elección explícita (data-theme). Un solo set de tokens.
   ============================================================ */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --papel: #121512; --hueso: #1b201b; --arena: #1b201b; --tinte: #1e2c21;
    --tinta: #ede8d9; --gris: #a8ab9b;
    --botella: #3e6349; --botella-osc: #35553f; --on-botella: #f1efe3;
    --border: rgba(237, 232, 217, 0.2); --border-soft: rgba(237, 232, 217, 0.1);
    --err: #d08a80; --warn: #c9b06a;
    --accent-text: #aecbb0; --accent-text-hover: #c6dcc7;
    --focus: #aecbb0;
    --fil-color: #aecbb0; --fil-opacity: 0.65;
    --btn-hover: #4a7355;
    --ghost-border: rgba(174, 203, 176, 0.5); --ghost-hover-bg: var(--tinte);
    --selection: rgba(174, 203, 176, 0.25);
    --apercu-filter: brightness(0.92);
    --hero-bg: #1e2c21;
    --hero-text: #ede8d9;
    --hero-muted: rgba(237, 232, 217, 0.72);
    --hero-accent: #aecbb0;
    --hero-btn-bg: #3e6349;
    --hero-btn-text: #f1efe3;
    --hero-btn-hover: #4a7355;
    --footer-bg: #1b201b;
    --dark-eyebrow: #cfe0d1;
    --reco-border: #aecbb0;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --papel: #121512; --hueso: #1b201b; --arena: #1b201b; --tinte: #1e2c21;
  --tinta: #ede8d9; --gris: #a8ab9b;
  --botella: #3e6349; --botella-osc: #35553f; --on-botella: #f1efe3;
  --border: rgba(237, 232, 217, 0.2); --border-soft: rgba(237, 232, 217, 0.1);
  --err: #d08a80; --warn: #c9b06a;
  --accent-text: #aecbb0; --accent-text-hover: #c6dcc7;
  --focus: #aecbb0;
  --fil-color: #aecbb0; --fil-opacity: 0.65;
  --btn-hover: #4a7355;
  --ghost-border: rgba(174, 203, 176, 0.5); --ghost-hover-bg: var(--tinte);
  --selection: rgba(174, 203, 176, 0.25);
  --apercu-filter: brightness(0.92);
  --hero-bg: #1e2c21;
  --hero-text: #ede8d9;
  --hero-muted: rgba(237, 232, 217, 0.72);
  --hero-accent: #aecbb0;
  --hero-btn-bg: #3e6349;
  --hero-btn-text: #f1efe3;
  --hero-btn-hover: #4a7355;
  --footer-bg: #1b201b;
  --dark-eyebrow: #cfe0d1;
  --reco-border: #aecbb0;
  color-scheme: dark;
}

/* Botón de tema (progressive enhancement: oculto sin JS) */
.theme-btn {
  display: none;
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em;
  background: none; border: 1px solid var(--border); border-radius: 8px;
  color: var(--accent-text); padding: 12px 14px; cursor: pointer; line-height: 1;
}
.theme-btn:hover { background: var(--ghost-hover-bg); }
:root[data-js] .theme-btn { display: inline-block; }

/* ============================================================
   MOBILE — rythme vertical resserré (≤640px).
   Règle : sur petit écran, l'air se mesure en dizaines de px,
   pas en centaines. Un seul écart entre blocs d'une même section.
   ============================================================ */
@media (max-width: 640px) {
  :root { --section: 48px; }
  h1 { font-size: clamp(2.05rem, 8.5vw, 2.5rem); }
  h2 { font-size: clamp(1.5rem, 6vw, 1.7rem); }
  h3 { font-size: 1.2rem; }
  .head-gap { margin-bottom: 28px; }
  section { scroll-margin-top: 0; }

  .hero { padding-block: 44px 40px; }
  .hero-ctas { margin-top: 24px; }
  .hero .lead { font-size: 1rem; }
  .hero-badges { margin-top: 20px; }

  .nav-links .btn { display: none; }
  .grid--3 { row-gap: 24px; }
  .grid--produit { gap: 28px; }
  .trust { padding-block: 14px; }
  .trust ul {
    gap: 6px 16px;
    font-size: 0.65rem;
    letter-spacing: 0.07em;
    justify-content: flex-start;
  }
  .trust li::before { content: "· "; }
  .trust li:first-child::before { content: ""; }

  .cuadro { padding: 20px 18px; }
  .grid { gap: 12px; }
  .steps { gap: 18px; }
  .tarif .prix { font-size: 2.2rem; }
  .tarif ul { margin-top: 14px; }
  .pullquote { text-align: left; }
  .pullquote p.sub, .humain { margin-left: 0; margin-right: 0; }
  summary { padding: 15px 16px 15px 38px; font-size: 1rem; }
  summary::before { left: 16px; }
  details .rep { padding: 13px 16px 16px; }
  .apercu figcaption { padding: 10px 12px; }

  footer.site { padding-block: 40px 28px; }
  footer.site .cols { gap: 24px; }
  footer.site .legal-line { margin-top: 30px; padding-top: 18px; flex-direction: column; gap: 8px; }

  .doc-page h2 { margin-top: 1.7em; }
}