/* ==========================================================================
   LearnClimb — "La Crête" design system
   Alpine fog base, ridge-gold accents, navy hairlines.
   ========================================================================== */

:root{
  --fog:#EEF2F5;
  --fog-ink:#0F1B2D;
  --stone:#E2E8EE;
  --stone-ink:#0F1B2D;
  --navy:#0F1B2D;
  --navy-ink:#EEF2F5;
  --gold:#C9952A;
  --gold-ink:#0F1B2D;
  --glacier:#4A7FA8;
  --grey:#7D8690;

  --font-display:'Playfair Display', Georgia, serif;
  --font-body:'Work Sans', 'Segoe UI', Arial, sans-serif;
  --font-mono:'IBM Plex Mono', 'Courier New', monospace;

  --container:1180px;
  --gap:clamp(1.5rem, 4vw, 3.5rem);
  --radius:2px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
}

body{
  margin:0;
  font-family:var(--font-body);
  font-weight:400;
  font-size:1rem;
  line-height:1.6;
  background:var(--fog);
  color:var(--fog-ink);
  -webkit-font-smoothing:antialiased;
}

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

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.15;
  margin:0 0 0.6em;
  letter-spacing:-0.01em;
}
h1{font-weight:600;font-size:clamp(2.4rem, 5vw, 4.2rem);}
h2{font-weight:600;font-size:clamp(1.8rem, 3.4vw, 2.6rem);}
h3{font-weight:500;font-size:clamp(1.25rem, 2vw, 1.6rem);}
h4{font-family:var(--font-body);font-weight:600;font-size:1.05rem;margin:0 0 0.5em;}

p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}

a{color:currentColor;text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s ease;}
a:hover,a:focus-visible{border-bottom-color:currentColor;}
a:focus-visible{outline:2px solid var(--glacier);outline-offset:3px;}

ul,ol{margin:0 0 1.1em;padding-left:1.3em;}
li{margin-bottom:0.45em;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:clamp(1.25rem, 4vw, 2.5rem);
  padding-right:clamp(1.25rem, 4vw, 2.5rem);
}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;
}

/* ---------------------------------------------------------------------- */
/* Surface system — the ONLY colour combinations used across the site     */
/* ---------------------------------------------------------------------- */
.surface-fog{background:var(--fog);color:var(--fog-ink);}
.surface-navy{background:var(--navy);color:var(--navy-ink);}
.surface-stone{background:var(--stone);color:var(--stone-ink);}
.surface-gold{background:var(--gold);color:var(--gold-ink);}

/* faint grid on light surfaces */
.surface-fog,.surface-stone{
  background-image:
    linear-gradient(to right, rgba(15,27,45,0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,27,45,0.045) 1px, transparent 1px);
  background-size:44px 44px;
}

/* ---------------------------------------------------------------------- */
/* Mono tags / kickers                                                    */
/* ---------------------------------------------------------------------- */
.tag{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  display:inline-flex;
  align-items:center;
  gap:0.6em;
  color:var(--glacier);
}
.surface-navy .tag{color:var(--gold);}
.tag .dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex:none;}

.numeral{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:0.8rem;
  letter-spacing:0.06em;
  color:var(--grey);
}

/* ---------------------------------------------------------------------- */
/* Ridge-gold "crête" line with ascent-node dots                          */
/* ---------------------------------------------------------------------- */
.crete-line{
  position:relative;
  height:1px;
  background:linear-gradient(to right, rgba(201,149,42,0) 0%, var(--gold) 18%, var(--gold) 82%, rgba(201,149,42,0) 100%);
  margin:2.2rem 0;
}
.crete-line .node{
  position:absolute;
  top:50%;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--glacier);
  transform:translate(-50%,-50%);
}
.crete-line .node:nth-child(1){left:18%;}
.crete-line .node:nth-child(2){left:42%;}
.crete-line .node:nth-child(3){left:64%;}
.crete-line .node:nth-child(4){left:82%;}

.hairline{border:0;border-top:1px solid rgba(15,27,45,0.14);margin:0;}
.surface-navy .hairline{border-top-color:rgba(238,242,245,0.18);}

/* ---------------------------------------------------------------------- */
/* Header                                                                  */
/* ---------------------------------------------------------------------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:transparent;
  color:var(--fog-ink);
  transition:background-color .35s ease, color .35s ease, box-shadow .35s ease;
}
.site-header.is-scrolled{
  background:var(--navy);
  color:var(--navy-ink);
  box-shadow:0 6px 22px rgba(15,27,45,0.18);
}
.site-header .bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:1.15rem 0;
  gap:1.5rem;
}
.brand{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:0.92rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  display:flex;
  flex-direction:column;
  gap:0.15rem;
  line-height:1.3;
}
.brand strong{font-size:1.02rem;}
.brand span{color:var(--glacier);font-size:0.68rem;letter-spacing:0.12em;}
.site-header.is-scrolled .brand span{color:var(--gold);}

.main-nav{display:flex;align-items:center;gap:1.9rem;}
.main-nav ul{display:flex;gap:1.9rem;margin:0;padding:0;list-style:none;}
.main-nav a{
  font-size:0.86rem;
  font-weight:600;
  letter-spacing:0.01em;
  padding-bottom:0.3rem;
  border-bottom:1px solid transparent;
}
.main-nav a.is-active{border-bottom-color:var(--gold);}
.nav-cta{
  font-family:var(--font-body);
  font-weight:600;
  font-size:0.84rem;
  padding:0.6rem 1.1rem;
  border-radius:var(--radius);
  background:var(--gold);
  color:var(--gold-ink);
  border-bottom:none!important;
  white-space:nowrap;
}
.nav-cta:hover{background:#b68523;}

.nav-toggle{
  display:none;
  background:none;border:1px solid currentColor;border-radius:var(--radius);
  width:42px;height:38px;
  position:relative;
  cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:10px;right:10px;height:1.5px;background:currentColor;
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle span:nth-child(1){top:13px;}
.nav-toggle span:nth-child(2){top:19px;}
.nav-toggle span:nth-child(3){top:25px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

@media (max-width: 860px){
  .nav-toggle{display:block;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;
    width:min(320px, 84vw);
    background:var(--navy);color:var(--navy-ink);
    flex-direction:column;align-items:flex-start;
    padding:5.5rem 1.8rem 2rem;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;gap:1.1rem;width:100%;}
  .main-nav a{color:var(--navy-ink);font-size:1.05rem;}
  .nav-cta{margin-top:0.8rem;}
}

/* ---------------------------------------------------------------------- */
/* Hero — "La Crête"                                                      */
/* ---------------------------------------------------------------------- */
.hero{
  min-height:92vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:8.5rem 0 4rem;
  position:relative;
}
@media (max-width:720px){
  .hero{min-height:80vh;padding:7.5rem 0 3rem;}
}
.hero-kicker{
  display:flex;flex-wrap:wrap;align-items:center;gap:0.9rem;
  margin-bottom:1.4rem;
}
.hero-kicker .brand-mark{
  font-family:var(--font-mono);font-weight:500;font-size:0.78rem;letter-spacing:0.14em;
}
.hero-kicker .sep{color:var(--grey);}
.hero h1{max-width:15ch;margin-bottom:1rem;}
.hero h1 .accent{color:var(--gold);font-style:italic;}
.hero .standfirst{
  max-width:46ch;
  font-size:1.12rem;
  color:var(--fog-ink);
}
.hero .standfirst strong{font-weight:600;}

.hero-baseline{
  display:flex;flex-wrap:wrap;gap:0.5rem 1.6rem;
  margin:1.6rem 0 2.2rem;
  padding-top:1.1rem;
  border-top:1px solid rgba(74,127,168,0.35);
}
.hero-baseline .tick{
  display:flex;align-items:center;gap:0.5em;
  font-family:var(--font-mono);
  font-size:0.76rem;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--glacier);
}
.hero-baseline .tick::before{
  content:'';width:7px;height:7px;border-radius:50%;
  border:1.5px solid var(--glacier);
}

.hero-ctas{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:2.6rem;}
.btn{
  display:inline-flex;align-items:center;gap:0.5em;
  font-weight:600;font-size:0.95rem;
  padding:0.85rem 1.6rem;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.btn-primary{background:var(--gold);color:var(--gold-ink);}
.btn-primary:hover{background:#b68523;transform:translateY(-1px);}
.btn-outline{background:transparent;border-color:var(--navy);color:var(--navy);}
.btn-outline:hover{background:var(--navy);color:var(--navy-ink);transform:translateY(-1px);}
.surface-navy .btn-outline{border-color:var(--navy-ink);color:var(--navy-ink);}
.surface-navy .btn-outline:hover{background:var(--navy-ink);color:var(--navy);}
.btn:focus-visible{outline:2px solid var(--glacier);outline-offset:2px;}

/* Framed plate — navy frame, gold corners, faint grid */
.plate{
  position:relative;
  border:1px solid var(--navy);
  padding:10px;
  background:var(--fog);
  margin-top:1rem;
}
.plate::before,.plate::after,
.plate .corner-tl,.plate .corner-br{
  content:'';
  position:absolute;
  width:22px;height:22px;
  border:2px solid var(--gold);
}
.plate::before{top:-1px;left:-1px;border-right:none;border-bottom:none;}
.plate::after{bottom:-1px;right:-1px;border-left:none;border-top:none;}
.plate img{
  width:100%;height:auto;
  display:block;
  background-image:
    linear-gradient(to right, rgba(15,27,45,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,27,45,0.05) 1px, transparent 1px);
  background-size:36px 36px;
}
.plate figcaption{
  margin-top:0.7rem;
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.06em;
  color:var(--grey);
}
.hero .plate{max-width:100%;}

.trust-strip{
  display:flex;flex-wrap:wrap;gap:0.5rem 1.8rem;
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.06em;
  color:var(--grey);
  margin-top:2.4rem;
  padding-top:1.2rem;
  border-top:1px solid rgba(15,27,45,0.1);
}

/* ---------------------------------------------------------------------- */
/* Sections                                                                */
/* ---------------------------------------------------------------------- */
section{padding:clamp(3.5rem, 8vw, 6.5rem) 0;}
.section-head{max-width:56ch;margin-bottom:2.6rem;}
.section-head .tag{margin-bottom:0.9rem;}
.section-head p{color:var(--grey);font-size:1.05rem;}
.surface-navy .section-head p{color:#B7C2CE;}

.lede{font-size:1.18rem;max-width:62ch;}

.grid{display:grid;gap:var(--gap);}
.grid-2{grid-template-columns:repeat(2, 1fr);}
.grid-3{grid-template-columns:repeat(3, 1fr);}
.grid-4{grid-template-columns:repeat(4, 1fr);}
@media (max-width:920px){
  .grid-3,.grid-4{grid-template-columns:repeat(2, 1fr);}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
}

/* Metric strip */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem;}
@media (max-width:760px){.metrics{grid-template-columns:repeat(2,1fr);}}
.metric{border-left:2px solid var(--gold);padding-left:1.1rem;}
.metric .figure{font-family:var(--font-display);font-size:2.1rem;font-weight:600;line-height:1;}
.metric .label{font-size:0.85rem;color:var(--grey);margin-top:0.35rem;}

/* Stage / method cards */
.stage-card{
  border:1px solid rgba(15,27,45,0.16);
  padding:1.8rem;
  position:relative;
  background:var(--fog);
}
.stage-card::before,.stage-card::after{
  content:'';position:absolute;width:16px;height:16px;border:2px solid var(--gold);
}
.stage-card::before{top:-1px;left:-1px;border-right:none;border-bottom:none;}
.stage-card::after{bottom:-1px;right:-1px;border-left:none;border-top:none;}
.stage-card .numeral{display:block;margin-bottom:0.7rem;}
.stage-card h3{margin-bottom:0.55rem;}
.stage-card p{color:var(--grey);font-size:0.96rem;}

/* Service card */
.service-card{
  border:1px solid rgba(15,27,45,0.16);
  background:var(--fog);
  padding:1.9rem;
  position:relative;
  display:flex;flex-direction:column;gap:0.8rem;
}
.service-card::before,.service-card::after{
  content:'';position:absolute;width:16px;height:16px;border:2px solid var(--gold);
}
.service-card::before{top:-1px;left:-1px;border-right:none;border-bottom:none;}
.service-card::after{bottom:-1px;right:-1px;border-left:none;border-top:none;}
.service-card .numeral{color:var(--glacier);}
.service-card .price{
  margin-top:auto;
  font-family:var(--font-mono);
  font-size:0.85rem;
  color:var(--gold-ink);
  background:var(--gold);
  display:inline-block;
  padding:0.35rem 0.7rem;
  align-self:flex-start;
}
.service-card p{color:var(--grey);font-size:0.95rem;}

/* Work / case card */
.work-card{
  border:1px solid rgba(15,27,45,0.16);
  background:var(--fog);
  overflow:hidden;
}
.work-card figure{margin:0;}
.work-card img{aspect-ratio:16/10;object-fit:cover;}
.work-card .body{padding:1.6rem;}
.work-card .tag{margin-bottom:0.6rem;}
.work-card p{color:var(--grey);font-size:0.95rem;}

/* Quote / testimonial */
.quote-block{
  border-left:3px solid var(--gold);
  padding-left:1.6rem;
  font-family:var(--font-display);
  font-size:1.3rem;
  font-style:italic;
  line-height:1.4;
}
.quote-block cite{
  display:block;margin-top:1rem;
  font-family:var(--font-mono);font-style:normal;font-size:0.78rem;
  letter-spacing:0.04em;color:var(--grey);
}

/* FAQ accordion */
.faq-item{border-bottom:1px solid rgba(15,27,45,0.15);}
.faq-item:first-child{border-top:1px solid rgba(15,27,45,0.15);}
.faq-q{
  width:100%;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
  background:none;border:none;
  text-align:left;
  font-family:var(--font-body);font-weight:600;font-size:1.05rem;
  padding:1.3rem 0;
  cursor:pointer;
  color:inherit;
}
.faq-q .plus{
  flex:none;font-family:var(--font-mono);font-size:1.2rem;color:var(--gold);
  transition:transform .25s ease;
}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a .inner{padding:0 0 1.4rem;color:var(--grey);max-width:70ch;}
.faq-item.is-open .faq-a{max-height:600px;}

/* Forms */
.form-grid{display:grid;gap:1.2rem;}
.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;}
@media (max-width:640px){.form-row-2{grid-template-columns:1fr;}}
label{display:block;font-size:0.85rem;font-weight:600;margin-bottom:0.4rem;}
input,select,textarea{
  width:100%;
  font-family:var(--font-body);font-size:0.98rem;
  padding:0.75rem 0.9rem;
  border:1px solid rgba(15,27,45,0.28);
  border-radius:var(--radius);
  background:#fff;
  color:var(--navy);
}
textarea{min-height:140px;resize:vertical;}
input:focus,select:focus,textarea:focus{outline:2px solid var(--glacier);outline-offset:1px;}
.checkbox-row{display:flex;align-items:flex-start;gap:0.7rem;}
.checkbox-row input{width:auto;margin-top:0.25rem;}
.checkbox-row label{font-weight:400;font-size:0.9rem;margin-bottom:0;}
.form-note{font-size:0.82rem;color:var(--grey);}
.form-status{margin-top:1rem;font-size:0.92rem;font-weight:600;}
.form-status[data-state="ok"]{color:#1f6d3f;}
.form-status[data-state="err"]{color:#a12e2e;}

/* Contact info list */
.info-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:1rem;}
.info-list li{display:flex;gap:0.9rem;align-items:flex-start;margin:0;}
.info-list .k{font-family:var(--font-mono);font-size:0.72rem;color:var(--grey);min-width:6.5em;padding-top:0.2em;letter-spacing:0.05em;text-transform:uppercase;}

/* CTA band */
.cta-band{text-align:left;}
.cta-band h2{max-width:20ch;}
.cta-band .lede{color:#B7C2CE;}

/* Footer */
.site-footer{padding:4rem 0 2rem;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.4rem;margin-bottom:2.6rem;}
@media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-top{grid-template-columns:1fr;}}
.footer-top h4{color:var(--navy-ink);font-family:var(--font-mono);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;font-weight:500;color:var(--gold);margin-bottom:1rem;}
.footer-top ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:0.6rem;}
.footer-top a{font-size:0.9rem;opacity:0.92;}
.footer-brand .brand{color:var(--navy-ink);margin-bottom:0.9rem;}
.footer-brand p{font-size:0.88rem;color:#B7C2CE;max-width:32ch;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;
  padding-top:1.6rem;border-top:1px solid rgba(238,242,245,0.18);
  font-size:0.8rem;color:#B7C2CE;
}
.footer-disclaimer{font-size:0.78rem;color:#8DA0B2;max-width:78ch;margin-top:1.6rem;line-height:1.6;}

/* ---------------------------------------------------------------------- */
/* Reveal-on-scroll — disabled without JS; ATF elements never use it       */
/* ---------------------------------------------------------------------- */
.js .reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease, transform .7s ease;
}
.js .reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}
@media (prefers-reduced-motion: reduce){
  .js .reveal{opacity:1;transform:none;transition:none;}
}

/* ---------------------------------------------------------------------- */
/* Cookie banner                                                          */
/* ---------------------------------------------------------------------- */
.cookie-banner{
  position:fixed;left:1rem;right:1rem;bottom:1rem;
  z-index:1000;
  max-width:640px;
  margin:0 auto;
  background:var(--navy);
  color:var(--navy-ink);
  border:1px solid rgba(201,149,42,0.5);
  padding:1.5rem;
  box-shadow:0 12px 32px rgba(15,27,45,0.35);
  transform:translateY(120%);
  transition:transform .5s ease;
}
.cookie-banner.is-visible{transform:translateY(0);}
.cookie-banner p{font-size:0.9rem;color:#D6DEE6;}
.cookie-actions{display:flex;flex-wrap:wrap;gap:0.7rem;margin-top:1rem;}
.cookie-actions button{
  font-family:var(--font-body);font-weight:600;font-size:0.85rem;
  padding:0.6rem 1rem;border-radius:var(--radius);border:1px solid var(--navy-ink);
  background:transparent;color:var(--navy-ink);cursor:pointer;
}
.cookie-actions .accept-all{background:var(--gold);color:var(--gold-ink);border-color:var(--gold);}
.cookie-panel{display:none;margin-top:1.1rem;border-top:1px solid rgba(238,242,245,0.2);padding-top:1.1rem;}
.cookie-panel.is-open{display:block;}
.cookie-panel .opt{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:0.8rem;font-size:0.85rem;}
.cookie-panel .opt small{display:block;color:#B7C2CE;font-weight:400;}

/* ---------------------------------------------------------------------- */
/* 404                                                                    */
/* ---------------------------------------------------------------------- */
.error-page{min-height:70vh;display:flex;align-items:center;padding-top:8rem;}
.error-page h1{max-width:18ch;}

/* Utility spacing */
.mt-0{margin-top:0;}
.stack-lg > * + *{margin-top:1.4rem;}
.text-grey{color:var(--grey);}
.center{text-align:center;margin-left:auto;margin-right:auto;}