/* ===========================================================
   Guidance Quantique — Ernest
   Feuille de style unique. Ne pas dupliquer.
   =========================================================== */

:root{
  color-scheme: light;

  --ground:        #F3F6F7;
  --ground-deep:   #E8EEF0;
  --surface:       #FBFCFD;
  --ink:           #0E1A20;
  --ink-soft:      #33474F;
  --muted:         #6B8189;
  --hairline:      #D2DCDF;
  --accent:        #0D6F7E;
  --accent-soft:   #E2EFF1;
  --flag:          #9A5B1F;
  --flag-bg:       #F6ECDF;

  --wave-ink:      13, 111, 126;

  --f-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --f-body:    "Spectral", Georgia, "Times New Roman", serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --col:  34rem;
  --gut:  clamp(1.25rem, 5vw, 3rem);
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;
    --ground:      #080F13;
    --ground-deep: #050B0E;
    --surface:     #0E181D;
    --ink:         #DEE8EB;
    --ink-soft:    #AFC1C7;
    --muted:       #7C929A;
    --hairline:    #1C2B31;
    --accent:      #5AC6D6;
    --accent-soft: #112A30;
    --flag:        #D9A05F;
    --flag-bg:     #211A10;
    --wave-ink:    90, 198, 214;
  }
}

:root[data-theme="dark"]{
  color-scheme: dark;
  --ground:      #080F13;
  --ground-deep: #050B0E;
  --surface:     #0E181D;
  --ink:         #DEE8EB;
  --ink-soft:    #AFC1C7;
  --muted:       #7C929A;
  --hairline:    #1C2B31;
  --accent:      #5AC6D6;
  --accent-soft: #112A30;
  --flag:        #D9A05F;
  --flag-bg:     #211A10;
  --wave-ink:    90, 198, 214;
}

*{ box-sizing: border-box; }

[hidden]{ display: none !important; }

body{
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a{ color: inherit; }

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

/* ---------- Shell ---------------------------------------- */

.wrap{
  width: 100%;
  max-width: var(--col);
  margin-inline: auto;
}

main{
  padding-inline: var(--gut);
}

/* ---------- Masthead ------------------------------------- */

.masthead{
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 40;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}

.masthead__in{
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .85rem var(--gut);
}

.wordmark{
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  line-height: 1.3;
  margin-right: auto;
}
.wordmark b{ font-weight: 500; }
.wordmark span{ color: var(--muted); }

.nav{
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav a{
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .07em;
  text-decoration: none;
  color: var(--ink-soft);
  padding-block: .2rem;
  border-bottom: 1px solid transparent;
}
.nav a:hover{ color: var(--accent); }
.nav a[aria-current="page"]{
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav__lang{
  margin-left: .35rem;
  padding: .2rem .5rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--muted) !important;
}
.nav__lang:hover{ border-color: var(--accent); }

.burger{
  display: none;
  appearance: none;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: .4rem .6rem;
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--ink);
  cursor: pointer;
}

@media (max-width: 760px){
  .burger{ display: block; }
  .nav{
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: .35rem;
    padding: 1rem var(--gut) 1.4rem;
    background: var(--surface);
    border-bottom: 1px solid var(--hairline);
  }
  .nav a{ font-size: .82rem; }
  .nav__lang{ margin-left: 0; margin-top: .4rem; }
}

/* ---------- Hero ----------------------------------------- */

.hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
  padding-block: clamp(3.5rem, 12vw, 7.5rem) clamp(3rem, 9vw, 5.5rem);
  padding-inline: var(--gut);
}

.hero__field{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .5;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 75% at 50% 45%, #000 15%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 75% at 50% 45%, #000 15%, transparent 78%);
}

.hero__in{ position: relative; }
.hero .wrap{ max-width: 40rem; }

.eyebrow{
  font-family: var(--f-mono);
  font-size: .7rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.4rem;
}

h1{
  font-family: var(--f-display);
  font-variation-settings: "opsz" 120;
  font-weight: 350;
  font-size: clamp(2.5rem, 7.5vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  text-wrap: balance;
  margin: 0;
}

.lede{
  font-size: clamp(1.15rem, 2.6vw, 1.4rem);
  line-height: 1.55;
  color: var(--ink-soft);
  font-weight: 300;
  max-width: 30rem;
  margin: 1.6rem 0 0;
  text-wrap: pretty;
}

.hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 2.4rem;
}

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

.btn{
  display: inline-block;
  font-family: var(--f-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: .8rem 1.35rem;
  border: 1px solid var(--accent);
  border-radius: 2px;
  transition: background .18s ease, color .18s ease;
}
.btn--solid{ background: var(--accent); color: #FBFDFD; }
.btn--solid:hover{ background: var(--ink); border-color: var(--ink); }
.btn--ghost{ color: var(--accent); }
.btn--ghost:hover{ background: var(--accent-soft); }

/* ---------- Sections ------------------------------------- */

.band{
  padding-block: clamp(3.25rem, 9vw, 6rem);
  border-bottom: 1px solid var(--hairline);
}
.band:last-of-type{ border-bottom: 0; }
.band--quiet{ background: var(--ground-deep); }

.band__label{
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

h2{
  font-family: var(--f-display);
  font-variation-settings: "opsz" 40;
  font-weight: 400;
  font-size: clamp(1.55rem, 4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -.015em;
  text-wrap: balance;
  margin: 0 0 1.1rem;
}

h3{
  font-family: var(--f-display);
  font-variation-settings: "opsz" 20;
  font-weight: 500;
  font-size: 1.1rem;
  line-height: 1.3;
  margin: 0 0 .4rem;
}

p{ margin: 0 0 1.15rem; text-wrap: pretty; }
p:last-child{ margin-bottom: 0; }

.flow > * + *{ margin-top: 0; }

.big{
  font-family: var(--f-display);
  font-variation-settings: "opsz" 60;
  font-weight: 300;
  font-size: clamp(1.5rem, 4.2vw, 2rem);
  line-height: 1.3;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 0 0 1.4rem;
  text-wrap: balance;
}

.dim{ color: var(--muted); }

em{ font-style: italic; }

.inline-link{
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  padding-bottom: .05em;
}
.inline-link:hover{ border-bottom-color: var(--accent); }

.more{
  display: inline-block;
  margin-top: .6rem;
  font-family: var(--f-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--accent);
  text-decoration: none;
}
.more:hover{ text-decoration: underline; text-underline-offset: .3em; }

/* ---------- Marginalia ----------------------------------- */

.annotated{ position: relative; }

.note{
  display: block;
  font-family: var(--f-mono);
  font-size: .68rem;
  line-height: 1.55;
  letter-spacing: .01em;
  color: var(--muted);
  border-left: 1px solid var(--hairline);
  padding-left: .7rem;
  margin-bottom: .9rem;
}

@media (min-width: 1180px){
  .note{
    position: absolute;
    top: .45rem;
    left: -14.5rem;
    width: 12.5rem;
    margin: 0;
    text-align: right;
    border-left: 0;
    border-right: 1px solid var(--hairline);
    padding-left: 0;
    padding-right: .8rem;
  }
}

/* ---------- Pull quote ----------------------------------- */

.pull{
  font-family: var(--f-display);
  font-variation-settings: "opsz" 72;
  font-weight: 300;
  font-size: clamp(1.4rem, 3.8vw, 1.9rem);
  line-height: 1.32;
  letter-spacing: -.015em;
  color: var(--accent);
  margin: 2.5rem 0;
  padding-left: 1.2rem;
  border-left: 2px solid var(--accent);
  text-wrap: balance;
}

/* ---------- Facts list ----------------------------------- */

.facts{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.facts li{
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 1rem;
  padding: .95rem 0;
  border-top: 1px solid var(--hairline);
}
.facts li:last-child{ border-bottom: 1px solid var(--hairline); }
.facts dt, .facts .k{
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: .3rem;
}
.facts .v{ margin: 0; }

@media (max-width: 560px){
  .facts li{ grid-template-columns: 1fr; gap: .2rem; }
  .facts .k{ padding-top: 0; }
}

/* ---------- Steps ---------------------------------------- */

.steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2.25rem;
  counter-reset: step;
}
.steps > li{
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 1rem;
}
.steps > li::before{
  content: counter(step, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--accent);
  padding-top: .35rem;
}

/* ---------- Cards (used sparingly) ------------------------ */

.notcard{
  border-top: 1px solid var(--hairline);
  padding-top: 1.1rem;
  margin-top: 1.6rem;
}
.notcard:first-of-type{ margin-top: 0; }

/* ---------- Flags for missing content --------------------- */

.todo{
  display: inline-block;
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  color: var(--flag);
  background: var(--flag-bg);
  border: 1px dashed color-mix(in srgb, var(--flag) 45%, transparent);
  border-radius: 3px;
  padding: .12rem .45rem;
}

/* ---------- Disclaimer ----------------------------------- */

.disclaimer{
  font-size: .9rem;
  line-height: 1.65;
  color: var(--muted);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
}

/* ---------- Form ----------------------------------------- */

.form{
  display: grid;
  gap: 1.1rem;
  margin-top: 1.8rem;
}
.field{ display: grid; gap: .35rem; }
.field label{
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.field input, .field textarea, .field select{
  font-family: var(--f-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: .7rem .8rem;
  width: 100%;
}
.field textarea{ min-height: 9rem; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus{
  border-color: var(--accent);
  outline: none;
}
.form__note{
  font-family: var(--f-mono);
  font-size: .7rem;
  line-height: 1.6;
  color: var(--muted);
}
.hp{ position: absolute; left: -9999px; }

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

.foot{
  border-top: 1px solid var(--hairline);
  padding: clamp(2.5rem, 7vw, 4rem) var(--gut) clamp(2rem, 5vw, 3rem);
  background: var(--ground-deep);
}
.foot__grid{
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 3rem;
  align-items: flex-start;
}
.foot__col{ min-width: 11rem; }
.foot h4{
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
  margin: 0 0 .7rem;
}
.foot ul{ list-style: none; margin: 0; padding: 0; display: grid; gap: .3rem; }
.foot a{ text-decoration: none; color: var(--ink-soft); font-size: .92rem; }
.foot a:hover{ color: var(--accent); }
.foot p{ font-size: .92rem; color: var(--ink-soft); margin: 0 0 .3rem; }
.foot__legal{
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--hairline);
  font-family: var(--f-mono);
  font-size: .68rem;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--muted);
}

/* ---------- Cover page ----------------------------------- */

.cover{
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: clamp(2rem, 8vw, 5rem) var(--gut);
  position: relative;
  overflow: hidden;
}
.cover__in{ position: relative; text-align: center; max-width: 38rem; }
.cover__choices{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  justify-content: center;
  margin-top: 2.6rem;
}
.cover__meta{
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 3rem;
  line-height: 1.9;
}

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}


/* ---------- Images ---------------------------------------- */

.band--image{
  padding-block: clamp(2.5rem, 7vw, 4.5rem);
  padding-inline: var(--gut);
  border-bottom: 1px solid var(--hairline);
}
.band--image img{
  width: 100%;
  max-width: 52rem;
  margin-inline: auto;
  aspect-ratio: 87 / 52;
  object-fit: cover;
  object-position: center 32%;
  border-radius: 2px;
  display: block;
}
@media (max-width: 640px){
  .band--image img{ aspect-ratio: 5 / 4; }
}

.figure{ margin: 0 0 2rem; }
.figure img{
  width: 100%;
  border-radius: 2px;
}
.figure figcaption{
  font-family: var(--f-mono);
  font-size: .68rem;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--muted);
  margin-top: .65rem;
}
.figure--portrait{ max-width: 15rem; }
@media (min-width: 620px){
  .figure--portrait{
    float: right;
    max-width: 13.5rem;
    margin: .35rem 0 1.2rem 1.7rem;
  }
}
.flow::after{ content: ""; display: table; clear: both; }

/* ---------- Articles -------------------------------------- */

.hero--article{ padding-block: clamp(2.75rem, 8vw, 5rem) clamp(2.25rem, 6vw, 3.5rem); }
.hero--article h1{ font-size: clamp(2rem, 5.5vw, 3.1rem); }

.article h2{
  font-size: clamp(1.3rem, 3.2vw, 1.6rem);
  margin-top: 3rem;
  margin-bottom: .9rem;
}
.article h2:first-child{ margin-top: 0; }
.article ul{
  margin: 0 0 1.15rem;
  padding-left: 1.15rem;
}
.article li{ margin-bottom: .5rem; }
.article li::marker{ color: var(--accent); }
.article .pull{ margin: 2.2rem 0; }

.cta-block{
  margin-top: 3.5rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--hairline);
}
.cta-block .band__label{ margin-bottom: .9rem; }

.article-list{
  list-style: none;
  margin: 0;
  padding: 0;
}
.article-list li{ border-top: 1px solid var(--hairline); }
.article-list li:last-child{ border-bottom: 1px solid var(--hairline); }
.article-list a{
  display: block;
  text-decoration: none;
  padding: 1.8rem 0;
}
.article-list h2{
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  margin: 0 0 .5rem;
  transition: color .18s ease;
}
.article-list a:hover h2{ color: var(--accent); }
.article-list p{
  color: var(--ink-soft);
  font-size: .98rem;
  margin: 0 0 .7rem;
}
.article-list .more{ margin-top: 0; }