/* =========================================================
   LONDON CALLING ACADEMY — Phase 1 design system
   Source of truth: Final Phase 1 Developer Handoff (12 Oct 2026)
   Direction: Design Research & Creative Direction (13 Oct 2026)
   Colours: Navy Notte · Rosso Pillar (accent only) · Warm Ivory · Portland Stone · White
   Type: Newsreader (editorial headlines) + Inter (body, forms, nav, UI) — two families only
   ========================================================= */
:root{
  /* colour — handoff §3 */
  --navy:#0B1D3A;          /* Navy Notte — dominant */
  --navy-2:#13284A;        /* navy surface step (cards on navy) */
  --red:#B8142B;           /* Rosso Pillar — accent only: CTA, line, small emphasis */
  --red-d:#9C1024;
  --ivory:#F4EFE6;         /* Warm Ivory — editorial background */
  --stone:#D8D0C2;         /* Portland Stone — secondary neutral */
  --white:#FFFFFF;
  --ink:#0B1D3A;
  --body:#3D475C;          /* body text on light: navy-tinted, AA on ivory + white */
  --muted:#5E6779;
  --line:#E3DCCF;          /* hairline on ivory */
  --line-w:#E7E9EE;        /* hairline on white */
  --on-navy:rgba(255,255,255,.78);
  --on-navy-line:rgba(255,255,255,.14);

  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  /* spacing rhythm — 8px base */
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:64px;--s7:96px;--s8:128px;
  --max:1200px; --pad:clamp(20px,4.5vw,56px);
  --sec:clamp(72px,9vw,128px);
  --r:4px; --r-lg:8px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
body{background:var(--white);color:var(--body);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:500;color:var(--ink);letter-spacing:-.012em;text-wrap:balance}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:999;background:var(--navy);color:#fff;padding:10px 16px;border-radius:var(--r);font-weight:500}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}

/* ---------- type scale ---------- */
.t-display{font-size:clamp(44px,6.2vw,84px);line-height:1.02;letter-spacing:-.022em;font-weight:400}
.t-h2{font-size:clamp(32px,3.7vw,50px);line-height:1.1;font-weight:400}
.t-h3{font-size:clamp(24px,2.2vw,30px);line-height:1.2;font-weight:500}
.t-h4{font-size:21px;line-height:1.3;font-weight:500}
.t-lede{font-size:clamp(18px,1.45vw,20px);line-height:1.6;color:var(--body)}
.t-small{font-size:15px;line-height:1.55}
/* label: the only uppercase text, kept short (handoff: avoid excessive all-caps) */
.label{display:inline-flex;align-items:center;gap:12px;font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.label::before{content:"";width:28px;height:2px;border-radius:2px;background:var(--red);flex:none}
.on-navy .label{color:#fff}
.on-navy h1,.on-navy h2,.on-navy h3,.on-navy h4{color:#fff}
.on-navy{color:var(--on-navy)}
.em-red{color:var(--red)}

/* ---------- buttons & links ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:14px 26px;border-radius:var(--r);
  font-family:var(--sans);font-size:16px;font-weight:500;line-height:1.2;letter-spacing:.005em;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease)}
.btn .ar{transition:transform .3s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:#06132A}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff}
.on-navy .btn-outline,.btn-outline.light{color:#fff;border-color:rgba(255,255,255,.55)}
.on-navy .btn-outline:hover,.btn-outline.light:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn-sm{min-height:44px;padding:10px 18px;font-size:15px}
.link{display:inline-flex;align-items:center;gap:10px;font-weight:500;color:var(--ink);background-image:linear-gradient(var(--red),var(--red));background-size:100% 1.5px;background-position:0 100%;background-repeat:no-repeat;padding-bottom:3px;transition:background-size .3s var(--ease),gap .3s var(--ease)}
.link:hover{gap:14px}
.on-navy .link{color:#fff}

/* ---------- header ---------- */
.hdr{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.2) blur(10px);-webkit-backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.hdr.stuck{border-bottom-color:var(--line-w);box-shadow:0 6px 24px -18px rgba(11,29,58,.35)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:88px;transition:height .3s var(--ease)}
.hdr.stuck .hdr-in{height:74px}
.logo{display:block;flex:none}
.logo img{height:64px;width:auto;transition:height .3s var(--ease)}
.hdr.stuck .logo img{height:54px}
.nav{display:flex;align-items:center;gap:6px}
.nav > a,.dd > button{font:inherit;font-size:15.5px;font-weight:500;color:var(--ink);background:none;border:0;padding:10px 14px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;position:relative}
.nav > a::after,.dd > button::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1.5px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav > a:hover::after,.nav > a[aria-current]::after,.dd:hover > button::after,.dd:focus-within > button::after{transform:scaleX(1)}
.dd{position:relative}
.dd svg{transition:transform .3s var(--ease)}
.dd:hover svg,.dd:focus-within svg{transform:rotate(180deg)}
.dd-menu{position:absolute;top:calc(100% + 12px);left:0;width:360px;background:#fff;border:1px solid var(--line-w);border-top:2px solid var(--red);border-radius:0 0 var(--r-lg) var(--r-lg);padding:8px;box-shadow:0 24px 48px -24px rgba(11,29,58,.35);
  opacity:0;visibility:hidden;transform:translateY(6px);transition:.25s var(--ease)}
.dd-menu::before{content:"";position:absolute;inset:-14px 0 auto;height:14px}
.dd:hover .dd-menu,.dd:focus-within .dd-menu{opacity:1;visibility:visible;transform:none}
.dd-menu a{display:block;padding:14px 16px;border-radius:var(--r);transition:background .2s}
.dd-menu a:hover{background:var(--ivory)}
.dd-menu b{display:block;font-family:var(--serif);font-weight:500;font-size:18px;color:var(--ink);line-height:1.3}
.dd-menu small{display:block;font-size:13.5px;color:var(--muted);margin-top:2px}
.hdr-cta{display:flex;align-items:center;gap:12px}
.burger{display:none;width:48px;height:48px;border:1px solid var(--line-w);border-radius:var(--r);background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center}
@media(max-width:1040px){.nav{display:none}.burger{display:inline-flex}}
@media(max-width:560px){.hdr-cta .btn{display:none}.hdr-in{height:76px}.logo img{height:48px}.hdr.stuck .logo img{height:44px}}

/* mobile menu */
.mnav{position:fixed;inset:0;z-index:400;background:var(--ivory);display:flex;flex-direction:column;padding:16px var(--pad) 28px;overflow:auto;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:.3s var(--ease)}
.mnav.open{opacity:1;visibility:visible;transform:none}
.mnav-top{display:flex;justify-content:space-between;align-items:center;height:60px}
.mnav-top img{height:46px;width:auto}
.mnav nav{margin-top:24px;display:flex;flex-direction:column}
.mnav .grp{font-size:12.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:22px 0 6px}
.mnav nav a{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:16px 0;border-bottom:1px solid var(--line);font-family:var(--serif);font-size:24px;color:var(--ink)}
.mnav nav a small{font-family:var(--sans);font-size:14px;color:var(--muted);white-space:nowrap}
.mnav .btn{margin-top:28px;width:100%}

/* ---------- sections ---------- */
.sec{padding:var(--sec) 0;position:relative}
.bg-ivory{background:var(--ivory)}
.bg-navy{background:var(--navy)}
.bg-white{background:#fff}
.sec-head{max-width:760px}
.sec-head .t-h2{margin-top:20px}
.sec-head .t-lede{margin-top:20px;max-width:62ch}
.sec-head.center{text-align:center;margin:0 auto}
.sec-head.center .label{justify-content:center}
.sec-head.center .t-lede{margin-left:auto;margin-right:auto}

/* ---------- programme fact bar (Cambridge-style key-facts strip) ---------- */
.facts{display:flex;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.facts li{flex:1 1 auto;padding:18px 24px;display:flex;flex-direction:column;gap:2px;position:relative}
.facts li + li::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:1px;background:var(--line)}
.facts .k{font-size:12.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.facts .v{font-family:var(--serif);font-size:20px;color:var(--ink);line-height:1.3}
.facts .v.price{color:var(--red)}

/* ---------- reveal (subtle; respects reduced motion) ---------- */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--d,0) * 1ms)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .js .rv{opacity:1;transform:none}
}

/* ---------- footer ---------- */
.ft{background:var(--navy);color:var(--on-navy);padding:80px 0 32px;font-size:15.5px}
.ft-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px}
.ft-brand img{height:72px;width:auto}
.ft-brand p{margin-top:20px;max-width:30ch;font-family:var(--serif);font-size:19px;line-height:1.45;color:#fff}
.ft h4{font-family:var(--sans);font-size:12.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.ft li{margin-bottom:12px}
.ft a{transition:color .2s}
.ft a:hover{color:#fff}
.ft-bot{margin-top:64px;padding-top:24px;border-top:1px solid var(--on-navy-line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;font-size:14px}
.ft-bot nav{display:flex;flex-wrap:wrap;gap:8px 24px}
@media(max-width:900px){.ft-grid{grid-template-columns:1fr 1fr}.ft-brand{grid-column:1/-1}}
@media(max-width:520px){.ft-grid{grid-template-columns:1fr}}

/* ---------- review layer (internal; removed before build) ---------- */
.ph{position:relative}
.ph-tag{position:absolute;z-index:5;left:12px;top:12px;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.94);color:var(--ink);border:1px dashed var(--red);border-radius:var(--r);padding:5px 9px;font-size:11.5px;font-weight:600;letter-spacing:.02em;line-height:1.2}
body:not(.show-ph) .ph-tag{display:none}

/* ---------- motion system hooks (GSAP; see assets/js/lca-motion.js) ---------- */
.w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em;margin-bottom:-.08em}
.wi{display:inline-block;will-change:transform}
.scroll-progress{position:fixed;left:0;right:0;top:0;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;z-index:500;pointer-events:none}
.label{--rule:1}
.label::before{transform:scaleX(var(--rule));transform-origin:left}
.motion .js-hide{visibility:hidden}