/* ==========================================================================
   Qu'est-ce que la vie ? — feuille de style
   Palette : vert tendre + lilas, sombre par défaut.
   ========================================================================== */

:root {
  color-scheme: dark light;

  --bg:        #0B1310;
  --bg-2:      #0F1815;
  --surface:   #14201A;
  --surface-2: #1A2A22;
  --line:      rgba(159, 217, 168, 0.14);
  --line-soft: rgba(159, 217, 168, 0.07);

  --ink:   #E9F3EA;
  --ink-2: #AEC4B5;
  --ink-3: #7E9787;

  --vert:      #9FD9A8;
  --vert-deep: #61AC7D;
  --lilas:     #C7B1E9;
  --lilas-deep:#9C86CA;
  --sable:     #E2C68E;
  --rouille:   #E39B9B;

  --shadow: 0 1px 0 rgba(255,255,255,0.03), 0 18px 40px -24px rgba(0,0,0,0.8);

  --display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --body: "Spectral", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --measure: 68ch;
  --wrap: 1160px;
  --col: 760px;
  --r: 4px;
}

[data-theme="light"] {
  --bg:        #F5F8F3;
  --bg-2:      #EDF3EA;
  --surface:   #FFFFFF;
  --surface-2: #F0F5EE;
  --line:      rgba(38, 66, 48, 0.16);
  --line-soft: rgba(38, 66, 48, 0.08);
  --ink:   #17251C;
  --ink-2: #3E5546;
  --ink-3: #63796A;
  --vert:      #2F7A50;
  --vert-deep: #1F5D3B;
  --lilas:     #6B4FA0;
  --lilas-deep:#54398A;
  --sable:     #8A6A22;
  --rouille:   #A34141;
  --shadow: 0 1px 0 rgba(0,0,0,0.02), 0 14px 34px -26px rgba(20,40,26,0.5);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-weight: 300;
  font-size: clamp(1rem, 0.96rem + 0.22vw, 1.115rem);
  line-height: 1.72;
  font-feature-settings: "onum" 1, "kern" 1;
  overflow-x: hidden;
}

/* --- canvas de particules ------------------------------------------------ */
#biofield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 12% -10%, rgba(159,217,168,0.10), transparent 55%),
    radial-gradient(90% 70% at 92% 6%, rgba(199,177,233,0.10), transparent 55%);
}
[data-theme="light"] body::after {
  background:
    radial-gradient(120% 80% at 12% -10%, rgba(47,122,80,0.07), transparent 55%),
    radial-gradient(90% 70% at 92% 6%, rgba(107,79,160,0.07), transparent 55%);
}

.page { position: relative; z-index: 2; }

/* --- accessibilité ------------------------------------------------------- */
.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--vert); color: #06110B;
  padding: 0.6rem 1rem; z-index: 99; font-family: var(--mono); font-size: 0.8rem;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

:focus-visible {
  outline: 2px solid var(--lilas);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- structure ----------------------------------------------------------- */
.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.col  { width: min(100% - 2.5rem, var(--col));  margin-inline: auto; }
@media (max-width: 640px) {
  .wrap, .col { width: min(100% - 1.75rem, var(--wrap)); }
}

/* --- en-tête ------------------------------------------------------------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  border-bottom: 1px solid var(--line-soft);
}
.site-head .bar {
  display: flex; align-items: center; gap: 1.25rem;
  padding: 0.7rem 0;
}
.brand {
  font-family: var(--display);
  font-size: 1.12rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  display: inline-flex; align-items: baseline; gap: 0.5rem;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--vert);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--vert) 22%, transparent);
  display: inline-block; flex: none;
  transform: translateY(-1px);
}
.brand em { font-style: italic; color: var(--vert); }

.site-nav { margin-left: auto; display: flex; align-items: center; gap: 1.1rem; }
.site-nav a {
  font-family: var(--mono);
  font-size: 0.735rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--vert); }
.site-nav a[aria-current="page"] { color: var(--vert); border-bottom-color: var(--vert); }

.theme-btn {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em;
  background: transparent; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.3rem 0.7rem; cursor: pointer; transition: 0.2s;
}
.theme-btn:hover { color: var(--ink); border-color: var(--vert); }

@media (max-width: 900px) {
  .site-nav { gap: 0.8rem; overflow-x: auto; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .theme-btn { display: none; }
}
@media (max-width: 560px) {
  .site-head .bar { flex-wrap: wrap; gap: 0.5rem 0.9rem; }
  .site-nav { margin-left: 0; width: 100%; }
}

/* --- typographie --------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--display); font-weight: 400; letter-spacing: -0.005em; }

h1 {
  font-size: clamp(2.5rem, 1.6rem + 4.2vw, 5rem);
  line-height: 1.02;
  margin: 0 0 1rem;
}
h1 em { font-style: italic; color: var(--vert); }

h2 {
  font-size: clamp(1.75rem, 1.3rem + 1.8vw, 2.65rem);
  line-height: 1.1;
  margin: 0 0 0.75rem;
}
h3 {
  font-size: clamp(1.28rem, 1.1rem + 0.7vw, 1.6rem);
  line-height: 1.2;
  margin: 2.4rem 0 0.6rem;
  color: var(--ink);
}
h4 {
  font-size: 1.1rem; margin: 1.6rem 0 0.4rem;
}

p { margin: 0 0 1.15rem; max-width: var(--measure); }
a { color: var(--vert); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--lilas); }
strong { font-weight: 600; color: var(--ink); }
em { font-style: italic; }
small { font-size: 0.82em; color: var(--ink-2); }

.kicker {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--lilas);
  margin: 0 0 0.9rem; display: block;
}
.standfirst {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.32rem);
  line-height: 1.6; color: var(--ink-2);
  max-width: 62ch; margin-bottom: 1.6rem;
}
.lede::first-letter {
  font-family: var(--display); float: left; font-size: 3.4em;
  line-height: 0.82; padding: 0.06em 0.1em 0 0; color: var(--vert);
}

/* --- héros --------------------------------------------------------------- */
.hero { padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(2rem, 5vw, 3.5rem); }
.hero .meta {
  font-family: var(--mono); font-size: 0.73rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3);
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; margin-bottom: 1.6rem;
}
.hero .meta span { display: inline-flex; align-items: center; gap: 0.45rem; }
.hero .meta span::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--lilas-deep); display: inline-block;
}

/* --- sections ------------------------------------------------------------ */
section.chapter { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
section.chapter + section.chapter { border-top: 1px solid var(--line-soft); }

.rule {
  border: 0; height: 1px; margin: 3rem 0;
  background: linear-gradient(90deg, var(--line), transparent);
}

/* --- statuts ------------------------------------------------------------- */
.status {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.14em 0.5em;
  border-radius: 999px; border: 1px solid currentColor;
  white-space: nowrap; vertical-align: 0.12em;
}
.status--fait   { color: var(--vert); }
.status--prelim { color: var(--sable); }
.status--hypo   { color: var(--lilas); }
.status--contro { color: var(--rouille); }

/* --- cartes -------------------------------------------------------------- */
.grid { display: grid; gap: 1rem; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 1.35rem 1.4rem 1.45rem;
  box-shadow: var(--shadow);
  position: relative;
  transition: border-color 0.25s, transform 0.25s;
}
a.card { display: block; text-decoration: none; color: inherit; }
a.card:hover { border-color: var(--vert); transform: translateY(-2px); }
a.card:hover h3 { color: var(--vert); }
.card h3 { margin: 0.35rem 0 0.5rem; font-size: 1.28rem; transition: color 0.2s; }
.card p { font-size: 0.95rem; color: var(--ink-2); margin-bottom: 0; }
.card .num {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em;
  color: var(--lilas); text-transform: uppercase;
}
.card .more {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--vert); margin-top: 0.9rem; display: inline-block;
}

/* --- citation / fait saillant -------------------------------------------- */
blockquote {
  margin: 2rem 0; padding: 0 0 0 1.4rem;
  border-left: 2px solid var(--lilas);
  font-family: var(--display); font-size: clamp(1.25rem, 1.1rem + 0.8vw, 1.7rem);
  line-height: 1.32; color: var(--ink);
}
blockquote p { margin-bottom: 0.5rem; max-width: 44ch; }
blockquote cite {
  display: block; font-family: var(--mono); font-style: normal;
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3);
}

.pullfact {
  margin: 2.2rem 0;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--vert);
  border-radius: var(--r);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  font-size: 1.02rem;
}
.pullfact p:last-child { margin-bottom: 0; }

/* --- listes -------------------------------------------------------------- */
ul, ol { max-width: var(--measure); padding-left: 1.15rem; }
li { margin-bottom: 0.5rem; }
li::marker { color: var(--vert-deep); }

dl.defs { max-width: var(--measure); margin: 1.5rem 0; }
dl.defs dt {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--lilas); margin-top: 1.2rem;
}
dl.defs dd { margin: 0.3rem 0 0; color: var(--ink-2); }

/* --- tableaux ------------------------------------------------------------ */
.table-wrap { overflow-x: auto; margin: 1.8rem 0; border: 1px solid var(--line); border-radius: var(--r); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; min-width: 620px; }
caption {
  caption-side: bottom; text-align: left; padding: 0.7rem 0.9rem;
  font-family: var(--mono); font-size: 0.72rem; color: var(--ink-3); letter-spacing: 0.03em;
}
th, td { padding: 0.72rem 0.9rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line-soft); }
thead th {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-3); font-weight: 500;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--surface) 45%, transparent); }

/* --- LE TAMIS (élément signature) ---------------------------------------- */
.sieve {
  margin: 2.5rem 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.sieve-head {
  padding: 1.1rem 1.3rem;
  border-bottom: 1px solid var(--line-soft);
  display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; align-items: baseline;
}
.sieve-head h2 { font-size: 1.35rem; margin: 0; }
.sieve-head p { margin: 0; font-size: 0.9rem; color: var(--ink-2); max-width: 52ch; }

.sieve-criteria {
  padding: 1rem 1.3rem;
  display: flex; flex-wrap: wrap; gap: 0.45rem;
  border-bottom: 1px solid var(--line-soft);
}
.crit {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.03em;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.32rem 0.75rem; cursor: pointer; user-select: none;
  color: var(--ink-3); background: transparent; transition: 0.18s;
}
.crit:hover { color: var(--ink); border-color: var(--vert-deep); }
.crit[aria-pressed="true"] {
  color: #06110B; background: var(--vert); border-color: var(--vert);
  font-weight: 500;
}
[data-theme="light"] .crit[aria-pressed="true"] { color: #FFFFFF; }

.sieve-body { padding: 0.4rem 0 0.2rem; }
.sieve-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem 1rem;
  align-items: center;
  padding: 0.62rem 1.3rem;
  border-bottom: 1px solid var(--line-soft);
}
.sieve-row:last-child { border-bottom: 0; }
.sieve-row .name { font-size: 0.98rem; }
.sieve-row .name small { display: block; color: var(--ink-3); font-size: 0.78rem; line-height: 1.4; }
.verdict {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.09em;
  text-transform: uppercase; padding: 0.24em 0.6em; border-radius: 999px;
  border: 1px solid currentColor; white-space: nowrap;
}
.verdict[data-v="oui"]    { color: var(--vert); }
.verdict[data-v="partiel"]{ color: var(--sable); }
.verdict[data-v="non"]    { color: var(--ink-3); }
.sieve-row[data-pass="oui"] { background: color-mix(in srgb, var(--vert) 7%, transparent); }

.sieve-foot {
  padding: 1rem 1.3rem 1.2rem;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-2) 50%, transparent);
}
.sieve-foot p { margin: 0; font-size: 0.95rem; color: var(--ink-2); max-width: none; }
.sieve-foot b { color: var(--ink); font-weight: 600; }
.sieve-foot .odd { color: var(--lilas); font-weight: 600; }

/* --- FAQ ----------------------------------------------------------------- */
details.faq {
  border-bottom: 1px solid var(--line-soft);
  padding: 0.2rem 0;
  max-width: var(--measure);
}
details.faq summary {
  cursor: pointer; list-style: none;
  font-family: var(--display); font-size: 1.18rem;
  padding: 0.9rem 2rem 0.9rem 0; position: relative;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+"; position: absolute; right: 0.2rem; top: 0.85rem;
  color: var(--vert); font-family: var(--mono); font-size: 1.1rem;
  transition: transform 0.2s;
}
details.faq[open] summary::after { content: "−"; }
details.faq > div { padding-bottom: 1rem; }
details.faq p:last-child { margin-bottom: 0; }

/* --- jauge --------------------------------------------------------------- */
.gauge { display: flex; height: 5px; border-radius: 999px; overflow: hidden; margin: 0.9rem 0 0.4rem; max-width: 420px; }
.gauge span { display: block; }
.gauge-legend {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em;
  color: var(--ink-3); text-transform: uppercase;
}

/* --- pied de page -------------------------------------------------------- */
.site-foot {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding: 2.6rem 0 3.2rem;
  font-size: 0.9rem; color: var(--ink-3);
}
.site-foot p { max-width: none; }
.site-foot .sig {
  font-family: var(--display); font-size: 1.15rem; color: var(--ink-2);
  margin-bottom: 0.9rem;
}
.site-foot .sig b { color: var(--vert); font-weight: 400; font-style: italic; }
.foot-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.04em; }

/* --- suite / navigation de bas de page ----------------------------------- */
.next {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  align-items: center; margin-top: 3rem; padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em;
}
.next a { text-decoration: none; }
.next a:hover { text-decoration: underline; }

/* --- fil d'ariane -------------------------------------------------------- */
.crumbs {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-3);
  padding: 1.4rem 0 0;
}
.crumbs a { color: var(--ink-3); text-decoration: none; }
.crumbs a:hover { color: var(--vert); }

/* --- révélation au défilement -------------------------------------------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.seen { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  #biofield { display: none; }
}

/* --- impression ---------------------------------------------------------- */
@media print {
  #biofield, .site-head, .theme-btn, .next { display: none !important; }
  body { background: #fff; color: #111; }
  .card, .sieve, .pullfact { border-color: #ccc; }
}