/* ═══════════════════════════════════════════════════════════════════════════
   MindStone Academy — styles ported verbatim from the approved mindstone-v2.html.
   Do not restyle. Additions for the extra pages (course detail, catalogue) are
   in a clearly-marked block at the very bottom and use the same tokens.
   ═══════════════════════════════════════════════════════════════════════════ */
:root{
  --paper:#FBFAF7; --white:#FFFFFF;
  --ink:#0E1020; --ink-2:#3E4157; --ink-3:#75798F;
  --hair:#E6E3DC;
  --gold:#B8842B;          /* AA-safe for text on light */
  --gold-lite:#E8B854;     /* decorative only */
  --display:'Archivo',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}

/* the golden thread runs behind everything, on the paper */
#ribbon{position:fixed;inset:0;z-index:0;pointer-events:none}
nav,header,section,footer{position:relative;z-index:1}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:'Inter',system-ui,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:#FFE9BC;color:var(--ink)}
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(22px,5vw,48px)}

nav{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.85);
  backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s}
nav.stuck{border-bottom-color:var(--hair)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);
  font-weight:700;font-size:16px;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{color:var(--ink-2);text-decoration:none;font-size:15px;transition:color .25s}
.nav-links a:hover{color:var(--ink)}
@media(max-width:880px){.nav-links{display:none}}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:8px;
  font-family:var(--display);font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;
  border:1px solid transparent;transition:all .25s;white-space:nowrap}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#23263C;transform:translateY(-1px);box-shadow:0 8px 20px -8px rgba(14,16,32,.5)}
.btn-line{background:transparent;color:var(--ink);border-color:var(--hair)}
.btn-line:hover{border-color:var(--ink);background:var(--white)}

/* ---------------- HERO ---------------- */
.hero{padding:clamp(46px,6vw,80px) 0 clamp(60px,8vw,100px)}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,4.5vw,64px);align-items:center}
.label{display:inline-flex;align-items:center;gap:9px;font-family:var(--display);font-weight:600;
  font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:var(--gold);margin-bottom:24px}
.label::before{content:'';width:22px;height:1px;background:var(--gold);opacity:.6}
h1{font-family:var(--display);font-weight:700;font-size:clamp(2.4rem,4.6vw,3.95rem);
  line-height:1.04;letter-spacing:-.033em;max-width:640px}
h1 .accent{color:var(--gold)}
.lead{margin-top:22px;max-width:520px;font-size:clamp(1.06rem,1.3vw,1.22rem);
  line-height:1.62;color:var(--ink-2);font-weight:300}
.hero-cta{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.hero-note{margin-top:24px;font-size:14px;color:var(--ink-3)}

/* ---------- THE STONE'S RESTING PLACE ----------
   No box. The stone simply sits here on the paper until you scroll,
   and then it leaves. This element only reserves the space; the stone
   itself is rendered in 3D and positioned to land exactly here. */
.stone-anchor{position:relative;aspect-ratio:1/1;width:100%}

/* ---------------- PROOF ---------------- */
.proof{border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);
  background:rgba(255,255,255,.72);backdrop-filter:blur(6px)}
.proof-in{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:34px;padding-bottom:34px}
.stat .n{font-family:var(--display);font-weight:700;font-size:clamp(1.55rem,2.3vw,2rem);
  letter-spacing:-.03em;line-height:1}
.stat .t{margin-top:7px;font-size:14px;color:var(--ink-3)}
@media(max-width:760px){.proof-in{grid-template-columns:repeat(2,1fr);gap:28px}}

.sec{padding:clamp(70px,9vw,116px) 0}
.sec-label{font-family:var(--display);font-weight:600;font-size:12px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--gold);margin-bottom:18px}
h2{font-family:var(--display);font-weight:700;font-size:clamp(1.9rem,3.3vw,2.85rem);
  line-height:1.1;letter-spacing:-.03em;max-width:720px}
p.intro{margin-top:18px;max-width:600px;font-size:1.1rem;color:var(--ink-2);font-weight:300}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:54px;
  background:var(--hair);border:1px solid var(--hair);border-radius:14px;overflow:hidden}
.pillar{background:var(--white);padding:40px 34px}
.pillar .pn{font-family:var(--display);font-weight:700;font-size:13px;color:var(--gold);margin-bottom:20px}
.pillar h3{font-family:var(--display);font-weight:700;font-size:1.26rem;letter-spacing:-.02em;
  margin-bottom:12px;line-height:1.25}
.pillar p{font-size:15.5px;color:var(--ink-2);font-weight:300;line-height:1.7}
@media(max-width:880px){.pillars{grid-template-columns:1fr}}

.courses{background:rgba(255,255,255,.72);backdrop-filter:blur(6px);
  border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.c-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:34px}
.chip{font-family:var(--display);font-weight:600;font-size:13.5px;padding:8px 16px;border-radius:7px;
  border:1px solid var(--hair);background:var(--paper);color:var(--ink-2);cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--ink-3)}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px;margin-top:30px}
.card{border:1px solid var(--hair);border-radius:14px;background:var(--paper);overflow:hidden;
  display:flex;flex-direction:column;text-decoration:none;color:inherit;
  transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-3px);border-color:#D6D2C8;box-shadow:0 18px 40px -24px rgba(14,16,32,.28)}
.card-top{padding:24px 26px 0;display:flex;align-items:center;justify-content:space-between}
/* each course carries a shard of the stone, in its own hue */
.shard{width:30px;height:30px;flex:none;
  clip-path:polygon(50% 0%,86% 26%,100% 66%,72% 100%,26% 96%,0% 58%,14% 20%);
  background:linear-gradient(150deg,#FFF 0%,var(--o1) 42%,var(--o2) 100%)}
.lvl{font-family:var(--display);font-weight:600;font-size:11px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-3)}
.card-body{padding:18px 26px 26px;display:flex;flex-direction:column;flex:1}
.cat{font-family:var(--display);font-weight:600;font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.card h3{font-family:var(--display);font-weight:700;font-size:1.15rem;line-height:1.32;
  letter-spacing:-.02em;margin-bottom:9px}
.card p{font-size:15px;color:var(--ink-2);font-weight:300;line-height:1.65;flex:1}
.card-foot{display:flex;align-items:center;justify-content:space-between;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--hair)}
.dur{font-size:13.5px;color:var(--ink-3)}
.price{font-family:var(--display);font-weight:700;font-size:15.5px}

.quote{text-align:center;padding:clamp(70px,9vw,110px) 0}
blockquote{font-family:var(--display);font-weight:500;font-size:clamp(1.35rem,2.4vw,2rem);
  line-height:1.36;letter-spacing:-.025em;max-width:820px;margin:0 auto}
cite{display:block;margin-top:24px;font-style:normal;font-size:14.5px;color:var(--ink-3)}

.cta{background:var(--ink);color:#fff;border-radius:18px;padding:clamp(40px,6vw,68px);
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;margin-bottom:clamp(70px,9vw,110px)}
.cta h2{color:#fff;font-size:clamp(1.7rem,2.7vw,2.3rem)}
.cta p{margin-top:14px;color:#ABAEC4;font-weight:300;max-width:400px}
.form{display:flex;flex-direction:column;gap:11px}
.form input{padding:15px 17px;border-radius:8px;border:1px solid #2C2F47;background:#181B2E;
  color:#fff;font-family:inherit;font-size:15.5px;outline:none;transition:border-color .25s}
.form input:focus{border-color:var(--gold-lite)}
.form input::placeholder{color:#6E718A}
.form button{background:var(--gold-lite);color:#3A2400;width:100%;padding:15px;border:0;border-radius:8px;
  font-family:var(--display);font-weight:600;font-size:15px;cursor:pointer;transition:background .25s}
.form button:hover{background:#F2C468}
.fine{font-size:12.5px;color:#6E718A}
.thanks{display:none;color:var(--gold-lite);font-size:15px}
@media(max-width:880px){.cta{grid-template-columns:1fr;gap:28px}}

footer{border-top:1px solid var(--hair);padding:44px 0 54px}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:14px;color:var(--ink-3)}
.foot a{color:var(--ink-2);text-decoration:none;margin-left:22px}
.foot a:hover{color:var(--ink)}

.rv{opacity:0;transform:translateY(18px);
  transition:opacity .9s cubic-bezier(.2,.8,.2,1),transform .9s cubic-bezier(.2,.8,.2,1)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}*{animation:none!important}}
@media(max-width:880px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .stone-anchor{order:-1;aspect-ratio:1/.78}
  h1{max-width:none}
}

/* ═══════════════════════════════════════════════════════════════════════════
   ADDITIONS — only for the pages that don't exist in v2 (course detail,
   catalogue extras, form validation, mobile nav, flash). Same tokens, no
   restyling of the above.
   ═══════════════════════════════════════════════════════════════════════════ */

/* success flash replacing the enquiry form */
.thanks.show{display:block}
.form.hide{display:none}

/* server-side field errors on the enquiry form */
.form-error{color:#FFB4A2;font-size:13.5px;margin-top:-2px}

/* mobile nav toggle (hidden on desktop; nav-links already hide < 880px) */
.nav-toggle{display:none;background:none;border:0;cursor:pointer;color:var(--ink);
  font-size:22px;line-height:1;padding:6px}
.mobile-menu{display:none;border-top:1px solid var(--hair);background:rgba(251,250,247,.98)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:14px clamp(22px,5vw,48px);color:var(--ink-2);
  text-decoration:none;font-family:var(--display);font-weight:600;border-bottom:1px solid var(--hair)}
@media(max-width:880px){.nav-toggle{display:block}}

/* ---- course detail (built from the same design language) ---- */
.course-head{padding:clamp(40px,6vw,72px) 0 0}
.crumbs{font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.crumbs a{color:var(--ink-3);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.course-layout{display:grid;grid-template-columns:1fr 340px;gap:clamp(32px,4vw,60px);
  align-items:start;padding-bottom:clamp(60px,8vw,100px)}
.course-main .lead{max-width:640px}
.course-cover{margin-top:30px;border:1px solid var(--hair);border-radius:14px;overflow:hidden;
  aspect-ratio:16/9;background:var(--white)}
.course-cover img{width:100%;height:100%;object-fit:cover;display:block}
.course-block{margin-top:44px;padding-top:34px;border-top:1px solid var(--hair)}
.course-block h2{font-size:clamp(1.4rem,2.2vw,1.8rem)}
.course-block p{margin-top:14px;color:var(--ink-2);font-weight:300;max-width:640px}
.ticks{margin-top:20px;list-style:none;display:grid;gap:12px}
.ticks li{display:flex;gap:12px;color:var(--ink-2);font-weight:300}
.ticks li::before{content:'';flex:none;width:20px;height:20px;margin-top:3px;border-radius:6px;
  background:linear-gradient(150deg,#FFF,#E8B854 45%,#A9600F);
  clip-path:polygon(50% 0%,86% 26%,100% 66%,72% 100%,26% 96%,0% 58%,14% 20%)}
.course-aside{position:sticky;top:98px;border:1px solid var(--hair);border-radius:14px;
  background:var(--white);padding:26px}
.course-aside .price-big{font-family:var(--display);font-weight:700;font-size:1.9rem;letter-spacing:-.02em}
.meta-list{margin:18px 0;border-top:1px solid var(--hair)}
.meta-list div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;
  border-bottom:1px solid var(--hair);font-size:14.5px}
.meta-list dt{color:var(--ink-3)}
.meta-list dd{color:var(--ink);font-weight:500;text-align:right}
.course-aside .btn{width:100%}
.aside-note{margin-top:12px;font-size:12.5px;color:var(--ink-3);text-align:center}
@media(max-width:880px){.course-layout{grid-template-columns:1fr}
  .course-aside{position:static}}

/* light enquiry form used on the contact + course pages */
.form-light input,.form-light textarea,.form-light select{padding:14px 16px;border-radius:8px;border:1px solid var(--hair);
  background:var(--white);color:var(--ink);font-family:inherit;font-size:15.5px;width:100%;
  outline:none;transition:border-color .25s}
.form-light textarea{min-height:120px;resize:vertical}
.form-light input:focus,.form-light textarea:focus,.form-light select:focus{border-color:var(--ink-3)}
.form-light .btn-primary{width:auto}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:14px}
.field label{font-family:var(--display);font-weight:600;font-size:13px;color:var(--ink-2)}
.field .opt{font-family:var(--body);font-weight:300;color:var(--ink-3);text-transform:none;letter-spacing:0}
.honey{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}