/* SuperÉtudiant / Étudiant Expert Pro — feuille de style unique (mobile d'abord, clair/sombre) */
:root{
  --bg:#f5f8fa;--surface:#fff;--surface-2:#eef3f6;--fg:#0e1d27;--mut:#55656f;--bd:#dbe4ea;
  --ac:#0f5c6e;--ac-h:#0b4a59;--ac-fg:#fff;--ac-soft:#e2f0f3;
  --wa:#e8912d;--wa-h:#d47f1c;--wa-fg:#241503;--wa-soft:#fdf0dc;
  --ok-bg:#e6f6ec;--ok-fg:#14532d;--ko-bg:#fdecea;--ko-fg:#7a1f16;--info-bg:#e9f1fb;--info-fg:#173b63;
  --sh:0 1px 2px rgba(14,29,39,.05),0 8px 24px rgba(14,29,39,.06);--sh-lg:0 2px 4px rgba(14,29,39,.06),0 18px 44px rgba(14,29,39,.10);
  --r:16px;--r-s:10px;--tab-h:64px;--focus:#1a7f95;
  color-scheme:light;
}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b1216;--surface:#131d24;--surface-2:#1a2730;--fg:#e8f0f4;--mut:#9db0bb;--bd:#25353f;
  --ac:#5cc0d6;--ac-h:#7ad0e2;--ac-fg:#04222a;--ac-soft:#12303a;
  --wa:#f0a044;--wa-h:#f5b160;--wa-fg:#1f1204;--wa-soft:#2b2010;
  --ok-bg:#11301f;--ok-fg:#a8e6c0;--ko-bg:#3a1714;--ko-fg:#f5b7b0;--info-bg:#132a40;--info-fg:#b5d3f2;
  --sh:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);--sh-lg:0 2px 4px rgba(0,0,0,.3),0 18px 44px rgba(0,0,0,.35);--focus:#7ad0e2;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0b1216;--surface:#131d24;--surface-2:#1a2730;--fg:#e8f0f4;--mut:#9db0bb;--bd:#25353f;
  --ac:#5cc0d6;--ac-h:#7ad0e2;--ac-fg:#04222a;--ac-soft:#12303a;
  --wa:#f0a044;--wa-h:#f5b160;--wa-fg:#1f1204;--wa-soft:#2b2010;
  --ok-bg:#11301f;--ok-fg:#a8e6c0;--ko-bg:#3a1714;--ko-fg:#f5b7b0;--info-bg:#132a40;--info-fg:#b5d3f2;
  --sh:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);--sh-lg:0 2px 4px rgba(0,0,0,.3),0 18px 44px rgba(0,0,0,.35);--focus:#7ad0e2;color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:16px/1.6 ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom));min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
img,svg{max-width:100%}
a{color:var(--ac);text-underline-offset:3px}
a:hover{color:var(--ac-h)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ac);color:var(--ac-fg);padding:10px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.w{max-width:1040px;margin:0 auto;padding:0 20px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* En-tête */
.top{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--bd)}
.top .w{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg);font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand img{width:32px;height:32px;border-radius:9px;display:block}
.brand b{color:var(--wa)}
.nav{display:none;gap:4px;align-items:center}
.nav a{color:var(--fg);text-decoration:none;padding:8px 12px;border-radius:999px;font-weight:600;font-size:15px}
.nav a:hover{background:var(--surface-2)}
.nav a[aria-current="page"]{background:var(--ac-soft);color:var(--ac)}
.nav .btn{margin-left:6px;padding:9px 16px;color:var(--wa-fg)}
.iconbtn{background:transparent;border:1px solid var(--bd);border-radius:999px;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;color:var(--fg);cursor:pointer}
.iconbtn:hover{background:var(--surface-2)}
.iconbtn svg{width:20px;height:20px}

/* Barre d'onglets permanente (mobile) */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--bd);padding-bottom:env(safe-area-inset-bottom)}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:var(--tab-h);color:var(--mut);text-decoration:none;font-size:11px;font-weight:600;letter-spacing:.01em;position:relative;-webkit-tap-highlight-color:transparent}
.tabbar svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tabbar a[aria-current="page"]{color:var(--ac)}
.tabbar a[aria-current="page"]::before{content:"";position:absolute;top:0;left:30%;right:30%;height:3px;border-radius:0 0 3px 3px;background:var(--wa)}
@media(min-width:900px){
  .tabbar{display:none}body{padding-bottom:0}.nav{display:flex}.top .w{height:68px}
}

/* Titres et texte */
h1,h2,h3{letter-spacing:-.02em;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(30px,6vw,52px);font-weight:800}
h2{font-size:clamp(23px,3.6vw,32px);font-weight:750;margin-top:0}
h3{font-size:18px;font-weight:700}
p{margin:0 0 1em}
.lead{font-size:clamp(17px,2.2vw,20px);color:var(--mut);max-width:60ch}
.mut{color:var(--mut)}.sm{font-size:14px}
.eyebrow svg{width:16px;height:16px;flex:none}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--ac);background:var(--ac-soft);padding:6px 12px;border-radius:999px;margin-bottom:16px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--wa);box-shadow:0 0 0 0 rgba(232,145,45,.6);animation:pulse 2.2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(232,145,45,0)}100%{box-shadow:0 0 0 0 rgba(232,145,45,0)}}
section{margin:56px 0}
.sec-h{margin-bottom:22px}
.sec-h p{color:var(--mut);max-width:62ch}

/* Boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--ac);color:var(--ac-fg);padding:13px 22px;border-radius:12px;border:0;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .15s,background .15s,box-shadow .15s;min-height:48px;box-shadow:0 1px 2px rgba(0,0,0,.1)}
.btn:hover{background:var(--ac-h);color:var(--ac-fg);transform:translateY(-1px)}
.btn.alt{background:var(--wa);color:var(--wa-fg)}.btn.alt:hover{background:var(--wa-h);color:var(--wa-fg)}
.btn.ghost{background:transparent;color:var(--ac);border:1.5px solid var(--bd);box-shadow:none}.btn.ghost:hover{background:var(--surface-2);color:var(--ac)}
.btn.sm{min-height:40px;padding:8px 14px;font-size:14px}
.btn[disabled]{opacity:.65;cursor:progress;transform:none}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 0}

/* Héros */
.hero{margin:0;padding:44px 0 8px;position:relative}
.hero-card{background:linear-gradient(140deg,var(--ac-soft),transparent 60%),var(--surface);border:1px solid var(--bd);border-radius:24px;padding:clamp(24px,5vw,56px);box-shadow:var(--sh-lg);position:relative;overflow:hidden}
.hero-card::after{content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,var(--wa-soft),transparent 70%);pointer-events:none}
.hero-card>*{position:relative;z-index:1}
.promise{max-width:22ch}
.trust{display:flex;flex-wrap:wrap;gap:8px 22px;margin:26px 0 0;padding:0;list-style:none;color:var(--mut);font-size:14px}
.trust li{display:flex;align-items:center;gap:8px}
.trust svg{width:18px;height:18px;stroke:var(--ac);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* Cartes et grilles */
.g{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.c{background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.c.flat{box-shadow:none}
.c h3{margin-bottom:.4em}.c p:last-child{margin-bottom:0}
.ico{width:44px;height:44px;border-radius:12px;background:var(--ac-soft);color:var(--ac);display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px}
.ico svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.steps{counter-reset:s;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));padding:0;margin:0;list-style:none}
.steps li{counter-increment:s;background:var(--surface);border:1px solid var(--bd);border-radius:var(--r);padding:22px 22px 22px 22px;position:relative}
.steps li::before{content:counter(s);display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--wa);color:var(--wa-fg);font-weight:800;align-items:center;justify-content:center;margin-bottom:12px}
.split{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:760px){.split{grid-template-columns:1fr 1fr}}
.story{font-size:clamp(18px,2.4vw,22px);line-height:1.55;max-width:60ch}
.story strong{color:var(--ac)}
.quote{border-left:4px solid var(--wa);padding:4px 0 4px 18px;margin:20px 0;font-size:clamp(20px,3vw,26px);font-weight:700;letter-spacing:-.01em;line-height:1.3}

/* Missions types */
.pack{display:flex;flex-direction:column;position:relative}
.pack .meta{display:flex;flex-wrap:wrap;gap:8px;margin:auto 0 14px;padding-top:6px}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);color:var(--fg);border:1px solid var(--bd);padding:4px 11px;border-radius:999px;font-size:13px;font-weight:600}
button.chip{cursor:pointer;font:inherit;font-size:14px;padding:8px 14px;min-height:40px}
button.chip[aria-pressed="true"]{background:var(--ac);color:var(--ac-fg);border-color:var(--ac)}
.fav{position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;border:1px solid var(--bd);background:var(--surface);color:var(--mut);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.fav svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linejoin:round}
.fav[aria-pressed="true"]{color:var(--wa);border-color:var(--wa)}.fav[aria-pressed="true"] svg{fill:currentColor}
.pack h3{padding-right:44px}
.link-arrow{font-weight:700;text-decoration:none}.link-arrow::after{content:" →"}

/* Formulaires */
.form{display:grid;gap:16px}
.field label,.lbl{display:block;font-weight:650;margin:0 0 6px;font-size:15px}
.opt{color:var(--mut);font-weight:500;font-size:13px}
input,textarea,select{width:100%;padding:13px 14px;border:1.5px solid var(--bd);border-radius:12px;font:inherit;background:var(--surface);color:var(--fg);min-height:48px;transition:border-color .15s,box-shadow .15s}
textarea{min-height:110px;resize:vertical}
input:hover,textarea:hover,select:hover{border-color:color-mix(in srgb,var(--ac) 40%,var(--bd))}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--ac);box-shadow:0 0 0 4px color-mix(in srgb,var(--ac) 20%,transparent)}
input:user-invalid,textarea:user-invalid{border-color:#c0392b}
.hint{font-size:13px;color:var(--mut);margin:6px 0 0}
.check{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--mut)}
.check input{width:22px;height:22px;min-height:0;margin-top:2px;flex:none;accent-color:var(--ac)}
.hp{position:absolute!important;left:-9999px!important;height:0;overflow:hidden}
.notice{border-radius:12px;padding:14px 16px;display:flex;gap:12px;align-items:flex-start}
.notice svg{width:22px;height:22px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:1px}
.ok{background:var(--ok-bg);color:var(--ok-fg)}.ko{background:var(--ko-bg);color:var(--ko-fg)}.info{background:var(--info-bg);color:var(--info-fg)}
.formcard{max-width:640px}
.success{text-align:center;padding:48px 20px;max-width:560px;margin:24px auto}
.success .tick{width:72px;height:72px;border-radius:50%;background:var(--ok-bg);color:var(--ok-fg);display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px}
.success .tick svg{width:36px;height:36px;stroke:currentColor;fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}

/* Tableaux */
.tw{overflow-x:auto;border:1px solid var(--bd);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--bd);vertical-align:top}
tr:last-child th,tr:last-child td{border-bottom:0}
th{font-weight:650;color:var(--mut);width:52%}
td b{font-size:1.1em}
.big{font-size:clamp(28px,5vw,40px);font-weight:800;color:var(--ac);letter-spacing:-.02em;line-height:1}

/* FAQ */
details.faq{background:var(--surface);border:1px solid var(--bd);border-radius:14px;margin:0 0 10px;padding:0}
details.faq summary{cursor:pointer;padding:16px 18px;font-weight:650;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:22px;color:var(--wa);font-weight:700;line-height:1}
details.faq[open] summary::after{content:"−"}
details.faq p{padding:0 18px 16px;margin:0;color:var(--mut)}

/* Segments et objectifs (Mon espace) */
.seg{display:inline-flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:2px}
.seg button{border:0;background:transparent;color:var(--fg);padding:9px 16px;border-radius:9px;font:inherit;font-weight:650;cursor:pointer;min-height:40px}
.seg button[aria-pressed="true"]{background:var(--surface);box-shadow:var(--sh);color:var(--ac)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.goals{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:8px}
.goals li{display:flex;gap:12px;align-items:center;background:var(--surface-2);border-radius:12px;padding:10px 12px}
.goals input[type=checkbox]{width:22px;height:22px;min-height:0;accent-color:var(--ac);flex:none}
.goals span{flex:1;overflow-wrap:anywhere}.goals li.done span{text-decoration:line-through;color:var(--mut)}
.goals button{border:0;background:transparent;color:var(--mut);cursor:pointer;font-size:20px;line-height:1;width:36px;height:36px;border-radius:8px}
.row{display:flex;gap:10px}.row>*:first-child{flex:1}
.empty{border:1.5px dashed var(--bd);border-radius:14px;padding:22px;text-align:center;color:var(--mut)}
.esp{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:800px){.esp{grid-template-columns:1fr 1fr}.esp .full{grid-column:1/-1}}

/* Pied de page */
.foot{border-top:1px solid var(--bd);margin-top:40px;padding:32px 0 28px;color:var(--mut);font-size:14px;background:var(--surface)}
.foot .cols{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:22px}
.foot h4{margin:0 0 8px;color:var(--fg);font-size:14px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a{color:var(--mut);text-decoration:none}.foot a:hover{color:var(--ac);text-decoration:underline}
.legal{font-size:13px;line-height:1.55}

/* Page d'erreur */
.err{text-align:center;padding:72px 0}
.err .n{font-size:clamp(72px,18vw,140px);font-weight:900;letter-spacing:-.05em;color:var(--ac);line-height:1;margin:0}
.err .n span{color:var(--wa)}

.loading{opacity:.6;pointer-events:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.top,.tabbar,.foot{display:none}body{padding:0}}
[hidden]{display:none!important}