/* =========================================================
   OVIAKIDS · Design System v2.0
   "Playful Tech" - Soft Brutalism for AI Education
   ========================================================= */

/* ── 1. RESET & TOKENS ─────────────────────────────────────── */
:root{
  /* Brand */
  --ov-blue:        #00AAEB;
  --ov-blue-dark:   #0086C0;
  --ov-blue-soft:   #E0F5FE;
  --ov-pink:        #F0295A;
  --ov-pink-dark:   #C81A48;
  --ov-pink-soft:   #FFE4EA;

  /* Accents */
  --c-sun:          #FFCF40;
  --c-sun-soft:     #FFF5D0;
  --c-mint:         #06D6A0;
  --c-mint-soft:    #D1FAEE;
  --c-violet:       #7C5CFF;
  --c-violet-soft:  #EDE7FF;
  --c-coral:        #FF6B6B;

  /* Neutrals */
  --ink:            #15163B;     /* Texte principal */
  --ink-soft:       #4A4D7A;     /* Texte secondaire */
  --ink-mute:       #8588B5;     /* Texte tertiaire */
  --paper:          #FFFBF5;     /* Crème background */
  --paper-2:        #FFF5E8;     /* Crème plus chaud */
  --paper-cool:     #F4F8FF;     /* Bleuté */
  --white:          #FFFFFF;
  --line:           #15163B;     /* Bordures fortes */
  --line-soft:      #E8E6F0;

  /* Effets */
  --shadow-pop:     6px 6px 0 var(--ink);
  --shadow-pop-sm:  4px 4px 0 var(--ink);
  --shadow-pop-lg:  10px 10px 0 var(--ink);
  --shadow-soft:    0 10px 30px rgba(21,22,59,.08);
  --shadow-glow-blue: 0 20px 50px rgba(0,170,235,.25);
  --shadow-glow-pink: 0 20px 50px rgba(240,41,90,.25);

  /* Rayons */
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-xl: 36px;
  --r-full: 999px;

  /* Type */
  --f-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --f-body:    'Inter', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', 'DM Mono', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.55;
  font-weight:400;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{
  font-family:var(--f-display);
  color:var(--ink);
  font-weight:700;
  line-height:1.1;
  margin:0;
  letter-spacing:-.02em;
}
p{margin:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
img{display:block;max-width:100%;}

/* ── 2. NAVBAR ─────────────────────────────────────────────── */
.ov-nav{
  position:sticky; top:0; z-index:100;
  background:rgba(255,251,245,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:2px solid var(--ink);
}
.ov-nav__inner{
  max-width:1280px; margin:0 auto;
  padding:.85rem 1.5rem;
  display:flex; align-items:center; justify-content:space-between;
  gap:1.5rem;
}
.ov-nav__logo{display:flex;align-items:center;gap:.6rem;transition:transform .2s ease;}
.ov-nav__logo:hover{transform:translateY(-1px) rotate(-1deg);}
.ov-nav__logo img{height:46px;}

.ov-nav__links{display:flex;gap:.4rem;align-items:center;}
.ov-nav__link{
  font-family:var(--f-display);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink-soft);
  position:relative;
  padding:.55rem .9rem;
  border-radius:var(--r-full);
  border:2px solid transparent;
  transition:color .2s, background .2s, border-color .2s, transform .15s;
}
.ov-nav__link:hover{
  color:var(--ink);
  background:var(--ov-blue-soft);
  border-color:var(--ink);
  transform:translateY(-1px);
}
.ov-nav__link.is-active{
  color:var(--ink);
  background:var(--c-sun);
  border-color:var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}
.ov-nav__link.is-active:hover{
  background:var(--c-sun);
  transform:translate(-1px,-1px);
  box-shadow:4px 4px 0 var(--ink);
}
.ov-nav__cta{display:flex;gap:.6rem;align-items:center;}
.ov-burger{
  display:none; width:42px; height:42px;
  border:2px solid var(--ink); background:var(--white);
  border-radius:var(--r-sm); cursor:pointer;
  box-shadow:var(--shadow-pop-sm);
}
.ov-burger:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink);}
.ov-mobile{display:none;padding:1rem 1.5rem 1.5rem;border-top:2px solid var(--ink);background:var(--white);}
.ov-mobile a{
  display:block; padding:.85rem 0;
  font-family:var(--f-display); font-weight:700;
  font-size:.85rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-soft); border-bottom:1px solid var(--line-soft);
}
.ov-mobile a:last-of-type{border-bottom:0;}

/* ── 3. BUTTONS ─────────────────────────────────────────────── */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:.5rem;
  font-family:var(--f-display);
  font-weight:600; font-size:.95rem;
  padding:.85rem 1.6rem;
  border-radius:var(--r-full);
  border:2px solid var(--ink);
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease;
  text-decoration:none;
  white-space:nowrap;
}
.btn--primary{background:var(--ov-pink);color:#fff;box-shadow:var(--shadow-pop-sm);}
.btn--primary:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
.btn--blue{background:var(--ov-blue);color:#fff;box-shadow:var(--shadow-pop-sm);}
.btn--blue:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
.btn--ink{background:var(--ink);color:#fff;box-shadow:var(--shadow-pop-sm);}
.btn--ink:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ov-pink);}
.btn--ghost{background:transparent;color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:#fff;}
.btn--white{background:var(--white);color:var(--ink);box-shadow:var(--shadow-pop-sm);}
.btn--white:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
.btn--lg{padding:1.05rem 2rem;font-size:1.02rem;}
.btn--sm{padding:.55rem 1.1rem;font-size:.85rem;border-width:2px;}

/* ── 4. BADGES & PILLS ─────────────────────────────────────── */
.pill{
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.35rem .85rem;
  border-radius:var(--r-full);
  font-size:.78rem; font-weight:600;
  background:var(--white);
  border:2px solid var(--ink);
  color:var(--ink);
}
.pill--pink{background:var(--ov-pink);color:#fff;}
.pill--blue{background:var(--ov-blue);color:#fff;}
.pill--sun{background:var(--c-sun);color:var(--ink);}
.pill--mint{background:var(--c-mint);color:#fff;}
.pill--violet{background:var(--c-violet);color:#fff;}
.pill--soft-blue{background:var(--ov-blue-soft);color:var(--ov-blue-dark);}
.pill--soft-pink{background:var(--ov-pink-soft);color:var(--ov-pink-dark);}

.eyebrow{
  display:inline-block;
  font-family:var(--f-mono);
  font-size:.72rem; font-weight:700;
  letter-spacing:.18em; text-transform:uppercase;
  color:var(--ov-pink);
  padding:0 0 .25rem;
  position:relative;
}
.eyebrow::before{
  content:'⬢';
  margin-right:.4rem;
  color:var(--ov-blue);
}

/* ── 5. CARDS ─────────────────────────────────────────────── */
.card{
  background:var(--white);
  border:2px solid var(--ink);
  border-radius:var(--r-lg);
  padding:1.75rem;
  transition:transform .2s, box-shadow .2s;
  box-shadow:var(--shadow-pop-sm);
}
.card--hover:hover{transform:translate(-3px,-3px);box-shadow:7px 7px 0 var(--ink);}
.card--soft{border:1px solid var(--line-soft);box-shadow:var(--shadow-soft);}
.card--lifted{box-shadow:var(--shadow-pop);}
.card--tint-blue{background:var(--ov-blue-soft);}
.card--tint-pink{background:var(--ov-pink-soft);}
.card--tint-sun{background:var(--c-sun-soft);}
.card--tint-mint{background:var(--c-mint-soft);}
.card--tint-violet{background:var(--c-violet-soft);}
.card--paper{background:var(--paper-2);}

/* ── 6. SECTION LAYOUT ─────────────────────────────────────── */
.section{padding:5rem 1.5rem;position:relative;}
.section--tight{padding:3.5rem 1.5rem;}
.section__inner{max-width:1240px;margin:0 auto;}
.section__head{text-align:center;max-width:680px;margin:0 auto 3rem;}
.section__head h2{
  font-size:clamp(2rem,4vw,2.85rem);
  margin:.55rem 0 .75rem;
}
.section__head p{color:var(--ink-soft);font-size:1.05rem;}

.bg-cream{background:var(--paper);}
.bg-cream-2{background:var(--paper-2);}
.bg-cool{background:var(--paper-cool);}
.bg-ink{background:var(--ink);color:var(--white);}
.bg-blue{background:var(--ov-blue);color:#fff;}
.bg-pink{background:var(--ov-pink);color:#fff;}

.bg-pattern-dots{
  background-image:radial-gradient(var(--line-soft) 1.5px, transparent 1.5px);
  background-size:24px 24px;
}
.bg-pattern-grid{
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size:48px 48px;
}

/* ── 7. STICKERS & DECO ─────────────────────────────────────── */
.sticker{
  display:inline-flex; align-items:center; gap:.4rem;
  padding:.4rem 1rem;
  background:var(--c-sun); color:var(--ink);
  font-family:var(--f-display); font-weight:700;
  font-size:.85rem;
  border:2px solid var(--ink);
  border-radius:var(--r-full);
  box-shadow:var(--shadow-pop-sm);
  transform:rotate(-3deg);
}
.sticker--pink{background:var(--ov-pink);color:#fff;}
.sticker--blue{background:var(--ov-blue);color:#fff;}
.sticker--mint{background:var(--c-mint);color:#fff;}
.sticker--rot+{transform:rotate(2deg);}

.blob{
  position:absolute; border-radius:50%;
  filter:blur(60px); opacity:.55; pointer-events:none;
  z-index:0;
}

/* ── 8. ANIMATIONS ─────────────────────────────────────────── */
@keyframes float-y{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes float-rot{0%,100%{transform:rotate(-3deg) translateY(0)}50%{transform:rotate(-3deg) translateY(-10px)}}
@keyframes wiggle{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2deg)}}
@keyframes spin-slow{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes pulse-soft{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:.85}}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

.anim-float{animation:float-y 4s ease-in-out infinite;}
.anim-float-2{animation:float-y 5s ease-in-out .8s infinite;}
.anim-wiggle{animation:wiggle 3s ease-in-out infinite;}
.anim-spin{animation:spin-slow 18s linear infinite;}
.anim-pulse{animation:pulse-soft 2.5s ease-in-out infinite;}

/* ── 9. FOOTER ─────────────────────────────────────────────── */
.ov-foot{
  background:var(--ink); color:var(--white);
  padding:4.5rem 1.5rem 2rem;
  position:relative; overflow:hidden;
}
.ov-foot::before{
  content:''; position:absolute; top:-1px; left:0; right:0;
  height:24px;
  background-image:radial-gradient(circle at 12px 12px, var(--paper) 12px, transparent 13px);
  background-size:24px 24px; background-position:0 -12px;
}
.ov-foot__inner{max-width:1240px;margin:0 auto;}
.ov-foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem;}
.ov-foot h4{color:#fff;font-size:1rem;margin-bottom:1.1rem;}
.ov-foot p,.ov-foot li,.ov-foot a{color:rgba(255,255,255,.7);font-size:.92rem;}
.ov-foot ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.65rem;}
.ov-foot a:hover{color:var(--c-sun);}
.ov-foot__socials{display:flex;gap:.5rem;margin-top:1.2rem;}
.ov-foot__socials a{
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);
  border:1.5px solid rgba(255,255,255,.15);
  color:#fff !important;
  transition:all .2s;
}
.ov-foot__socials a:hover{background:var(--ov-pink);border-color:var(--ov-pink);transform:translateY(-2px);}
.ov-foot__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:1.5rem;
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:1rem;
  font-size:.82rem;color:rgba(255,255,255,.5);
}

/* ── 10. FORMS ─────────────────────────────────────────────── */
.field{display:flex;flex-direction:column;gap:.4rem;}
.field label{font-size:.82rem;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  font-family:var(--f-body); font-size:.95rem;
  padding:.85rem 1rem;
  border:2px solid var(--ink);
  background:var(--white); color:var(--ink);
  border-radius:var(--r-md);
  transition:all .15s;
  outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  box-shadow:var(--shadow-pop-sm);
  transform:translate(-1px,-1px);
}
.field textarea{resize:vertical;min-height:110px;}

/* ── 11. UTIL ─────────────────────────────────────────────── */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;}

.stack{display:flex;flex-direction:column;gap:1rem;}
.row{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;}
.center{text-align:center;}

.text-blue{color:var(--ov-blue);}
.text-pink{color:var(--ov-pink);}
.text-mute{color:var(--ink-mute);}
.text-soft{color:var(--ink-soft);}

/* ── 12. FLASH ─────────────────────────────────────────────── */
.flash{
  position:fixed; top:5.5rem; right:1rem; z-index:200;
  background:var(--c-mint); color:#fff;
  border:2px solid var(--ink);
  padding:.85rem 1.2rem; border-radius:var(--r-md);
  box-shadow:var(--shadow-pop-sm);
  display:flex; align-items:center; gap:.65rem;
  font-weight:500;
  max-width:380px;
}
.flash--error{background:var(--c-coral);}

/* ── 13. RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 960px){
  .ov-nav__links{display:none;}
  .ov-burger{display:flex;align-items:center;justify-content:center;}
  .ov-mobile.is-open{display:block;}
  .ov-foot__grid{grid-template-columns:1fr 1fr;}
  .grid-3,.grid-4{grid-template-columns:1fr 1fr;}
}
@media (max-width: 640px){
  .section{padding:3.5rem 1.25rem;}
  .ov-foot__grid{grid-template-columns:1fr;gap:2rem;