/* Acedemie design system: a French student's pencil case.
   Ink-blue, Bic blue, highlighter yellow, stickers, squared notebook paper as a detail, the tutors in colour.
   Used by the landing (index.html), the sign-up (inscription.html) and the app pages (live.html, parent.html). */

:root{
  --ink:#16133F;          /* deep ink: text, dark sections */
  --ink-2:#4A4868;        /* secondary text */
  --ink-3:#8A88A6;        /* hints */
  --bg:#F5F6FF;           /* page background: cool, light */
  --card:#FFFFFF;
  --line:#E4E5F4;
  --blue:#3D5AFE;         /* Bic blue, brighter: the main action colour */
  --blue-2:#2A3FD4;
  --blue-soft:#E7EBFF;
  --yellow:#FFD84D;       /* highlighter */
  --yellow-2:#FFC21A;
  --pink:#FF78C4;
  --mint:#2ED3A0;
  --mint-soft:#DDF8EE;
  --coral:#FF6A4D;
  --violet:#8C62F4;
  --amber:#FFB020;
  --teal:#18B6C9;
  --ok:#17A06E; --ok-soft:#DDF8EE;
  --warn:#E08A00; --warn-soft:#FFF1D6;
  --r-sm:12px; --r:20px; --r-lg:28px;
  --shadow:0 18px 40px -18px rgba(22,19,63,.28);
  --shadow-lg:0 40px 80px -30px rgba(22,19,63,.45);
  --display:"Bricolage Grotesque","Geist",system-ui,sans-serif;
  --sans:"Geist",system-ui,sans-serif;
  --hand:"Playwrite FR Moderne",cursive;
  /* one colour per subject (and per tutor) */
  --c-maths:#3D5AFE; --c-francais:#FF6A4D; --c-anglais:#FF78C4; --c-espagnol:#FFB020; --c-allemand:#18B6C9;
  --c-histoire:#B7791F; --c-svt:#2ED3A0; --c-physique:#8C62F4; --c-principale:#16133F;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit}

/* type */
.display{font-family:var(--display);font-weight:800;letter-spacing:-.035em;line-height:.95}
.h1{font-family:var(--display);font-weight:800;letter-spacing:-.035em;line-height:.95;font-size:clamp(44px,7.2vw,96px)}
.h2{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:1;font-size:clamp(34px,5vw,64px)}
.h3{font-family:var(--display);font-weight:700;letter-spacing:-.02em;line-height:1.1;font-size:clamp(22px,2.4vw,28px)}
.lead{font-size:clamp(18px,1.6vw,21px);color:var(--ink-2);max-width:560px}
.kicker{font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:.02em;text-transform:uppercase;color:var(--blue)}
/* highlighter swipe behind a word */
.hl{position:relative;white-space:nowrap;z-index:0}
.hl::before{content:"";position:absolute;left:-.08em;right:-.1em;bottom:.04em;height:.42em;background:var(--hl,var(--yellow));border-radius:.2em .5em .35em .6em;transform:rotate(-1.2deg) skewX(-8deg);z-index:-1}
@media (max-width:640px){   /* on phones the words wrap: the highlight follows each line */
  .hl{white-space:normal;box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:0 .06em;
      background:linear-gradient(transparent 58%,var(--hl,var(--yellow)) 58%,var(--hl,var(--yellow)) 94%,transparent 94%)}
  .hl::before{display:none}
  .h1{font-size:clamp(38px,11vw,48px)}}
.hl.pink{--hl:var(--pink)} .hl.mint{--hl:var(--mint)} .hl.blue{--hl:#9FB0FF}
.hand{font-family:var(--hand);font-weight:400}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:56px;padding:0 26px;border-radius:999px;font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:-.01em;background:var(--blue);color:#fff;box-shadow:0 5px 0 var(--blue-2);transition:transform .12s,box-shadow .12s,background .2s;text-decoration:none;white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 0 var(--blue-2)}
.btn:active{transform:translateY(4px);box-shadow:0 1px 0 var(--blue-2)}
.btn.yellow{background:var(--yellow);color:var(--ink);box-shadow:0 5px 0 var(--yellow-2)}
.btn.white{background:#fff;color:var(--ink);box-shadow:0 5px 0 var(--line)}
.btn.ghost{background:transparent;color:inherit;box-shadow:inset 0 0 0 2px currentColor}
.btn.ghost:active{transform:translateY(2px)}
.btn.sm{height:42px;padding:0 18px;font-size:15px;box-shadow:0 3px 0 var(--blue-2)}
.btn.sm.white{box-shadow:0 3px 0 var(--line)}
.btn.sm.yellow{box-shadow:0 3px 0 var(--yellow-2)}
.btn[disabled]{opacity:.45;pointer-events:none}

/* stickers, chips, cards */
.sticker{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:16px;background:#fff;color:var(--ink);font-family:var(--display);font-weight:700;font-size:16px;box-shadow:var(--shadow);transform:rotate(var(--rot,-3deg));white-space:nowrap}
.sticker b{font-weight:800}
.sticker .dot{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--dot,var(--yellow));font-size:14px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--card);border:2px solid var(--line);font-weight:600;font-size:15px}
.card{background:var(--card);border-radius:var(--r-lg);box-shadow:var(--shadow)}
.pill{display:inline-block;font-size:12px;font-weight:700;border-radius:999px;padding:4px 10px;white-space:nowrap}
.s-acquis{background:var(--ok-soft);color:var(--ok)} .s-fragile{background:var(--warn-soft);color:var(--warn)}
.s-en-cours{background:var(--blue-soft);color:var(--blue)} .s-a-voir{background:#EEEEF7;color:var(--ink-3)}

/* squared notebook paper (Seyès), as a detail */
.seyes{background-color:#FFFEFB;background-image:linear-gradient(to right,transparent 43px,#F08B7A 43px,#F08B7A 45px,transparent 45px),repeating-linear-gradient(to bottom,transparent 0 27px,#B8C3F0 27px 28px),repeating-linear-gradient(to bottom,transparent 0 6px,#E3E8FA 6px 7px),repeating-linear-gradient(to right,transparent 0 27px,#E3E8FA 27px 28px)}

/* motion */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@keyframes bob{0%,100%{transform:translateY(0) rotate(var(--rot,0deg))}50%{transform:translateY(-10px) rotate(var(--rot,0deg))}}
.bob{animation:bob 5s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.bob{animation:none}html{scroll-behavior:auto}}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.wrap{padding:0 16px}.btn{height:52px;padding:0 22px}}

/* the logo, "le A-crayon" (assets/brand/, scripts/build_brand.py): the bare A, no tile (Nils, 29 Sep), wherever a page puts .logo i */
i.mark{background:none!important;box-shadow:none!important;border-radius:0!important;transform:none!important;overflow:visible}
i.mark svg{display:block;width:100%!important;height:100%!important}