/* MathCareful 2026 — colourful shaded interface */
:root{
  --ink:#10213d;
  --muted:#60708c;
  --white:#fff;
  --shadow:0 16px 38px rgba(24,39,75,.11);
  --shadow2:0 24px 55px rgba(24,39,75,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 10% 6%,rgba(36,104,242,.08),transparent 23%),
    radial-gradient(circle at 90% 15%,rgba(142,67,230,.07),transparent 24%),
    #f5f8fd;
}
a{text-decoration:none}
.wrap{width:min(1180px,calc(100% - 34px));margin:auto}

/* HEADER */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:linear-gradient(90deg,#087f8c,#2468f2 52%,#6f39ea);
  box-shadow:0 8px 28px rgba(39,73,180,.22)
}
.nav{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{color:white;font-size:25px;font-weight:900;letter-spacing:-.5px}
.nav nav{display:flex;align-items:center;gap:5px}
.nav nav>a,.nav-drop>button{
  border:0;background:transparent;color:white;padding:10px 12px;border-radius:999px;
  font:inherit;cursor:pointer
}
.nav nav>a:hover,.nav-drop>button:hover{background:rgba(255,255,255,.16)}
.nav-drop{position:relative}
.nav-drop-menu{
  display:none;position:absolute;top:100%;left:0;width:245px;padding:9px;
  border-radius:16px;background:white;box-shadow:0 18px 45px rgba(0,0,0,.18)
}
.nav-drop:hover .nav-drop-menu,.nav-drop:focus-within .nav-drop-menu{display:block}
.nav-drop-menu a{display:block;padding:10px 12px;border-radius:10px;color:#183153}
.nav-drop-menu a:hover{background:#eef4ff;color:#245eea}
.mobile-menu-btn{display:none;border:0;background:rgba(255,255,255,.18);color:#fff;border-radius:12px;padding:8px 11px;font-size:20px}

/* HERO */
.mc-hero{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
  margin:34px 0 44px;padding:52px;border-radius:34px;
  background:
    linear-gradient(135deg,rgba(224,249,245,.96),rgba(255,247,209,.96) 48%,rgba(245,230,255,.96));
  box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)
}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:900;letter-spacing:1.2px;color:#5f42d8;
  background:rgba(255,255,255,.75);padding:8px 12px;border-radius:999px
}
.eyebrow.blue{color:#2862e8;background:#edf3ff}
.eyebrow.white{color:#fff;background:rgba(255,255,255,.14)}
.mc-hero h1{font-size:clamp(42px,6vw,78px);line-height:.96;letter-spacing:-3px;margin:18px 0 14px}
.mc-hero h1 span{
  background:linear-gradient(90deg,#059669,#2563eb,#8b3fea,#e95e42);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.mc-hero p{font-size:17px;line-height:1.7;color:#52627e;max-width:760px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.pill{display:inline-flex;align-items:center;justify-content:center;padding:13px 20px;border-radius:999px;font-weight:800}
.primary-pill{color:white;background:linear-gradient(90deg,#2267ef,#6f43e9);box-shadow:0 11px 25px rgba(60,70,220,.22)}
.light-pill{color:#223454;background:white;box-shadow:0 9px 22px rgba(23,42,80,.09)}
.stats-row{display:flex;gap:28px;flex-wrap:wrap;margin-top:27px}
.stats-row div{display:flex;flex-direction:column}
.stats-row strong{font-size:22px}.stats-row small{color:#687792}
.hero-math{position:relative;min-height:300px}
.math-ball{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:180px;height:180px;border-radius:50%;display:grid;place-items:center;
  color:white;font-size:42px;font-weight:900;
  background:linear-gradient(135deg,#078b86,#2468f2,#793ee8);
  box-shadow:0 28px 65px rgba(66,70,190,.28);
  animation:floatBall 5s ease-in-out infinite
}
.math-chip{
  position:absolute;padding:11px 14px;background:rgba(255,255,255,.9);
  color:#29436f;font-weight:900;border-radius:15px;box-shadow:0 14px 30px rgba(24,39,75,.13);
  animation:floatChip 4s ease-in-out infinite
}
.c1{left:5%;top:12px}.c2{right:0;top:58px;animation-delay:.7s}
.c3{left:0;bottom:18px;animation-delay:1.3s}.c4{right:12%;bottom:40px;font-size:24px;animation-delay:1.8s}

/* LEVEL SECTION */
.levels-section{padding-bottom:52px}
.section-head{margin-bottom:24px}
.section-head h2,.subject-panel h2{font-size:clamp(30px,4vw,45px);letter-spacing:-1.6px;margin:10px 0}
.section-head p{color:#66758f;max-width:840px;line-height:1.65}
.levels-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.level-card{
  --a:#2563eb;--b:#7c3aed;position:relative;overflow:visible;
  min-height:315px;padding:22px;border-radius:26px;
  background:linear-gradient(155deg,#fff,#f9fbff);
  border:1px solid rgba(25,50,95,.08);box-shadow:var(--shadow);
  transition:transform .28s ease,box-shadow .28s ease
}
.level-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:6px;border-radius:26px 26px 0 0;
  background:linear-gradient(90deg,var(--a),var(--b))
}
.level-card:hover{transform:translateY(-8px);box-shadow:var(--shadow2)}
.icon-row{display:flex;justify-content:space-between;align-items:center;margin:7px 0 18px}
.level-icon{
  min-width:58px;height:58px;padding:0 10px;border-radius:18px;display:grid;place-items:center;
  color:white;font-size:18px;font-weight:900;background:linear-gradient(135deg,var(--a),var(--b));
  box-shadow:0 10px 24px rgba(40,70,160,.20)
}
.card-number{font-weight:900;color:var(--a);opacity:.55}
.level-card h3{font-size:20px;margin:0 0 11px;color:#142544}
.level-card>p{min-height:96px;margin:0 0 16px;color:#5c6b84;line-height:1.55}

/* SHADED CARDS */
.pink-card{--a:#db2777;--b:#fb7185;background:linear-gradient(155deg,#fff,#fff2f7)}
.green-card{--a:#16a34a;--b:#4ade80;background:linear-gradient(155deg,#fff,#f0fff4)}
.blue-card{--a:#2563eb;--b:#22b8ef;background:linear-gradient(155deg,#fff,#eef6ff)}
.violet-card{--a:#7c3aed;--b:#b15cff;background:linear-gradient(155deg,#fff,#f7efff)}
.orange-card{--a:#ea580c;--b:#f59e0b;background:linear-gradient(155deg,#fff,#fff6e8)}
.cyan-card{--a:#0891b2;--b:#22d3ee;background:linear-gradient(155deg,#fff,#ecfdff)}
.teal-card{--a:#0f766e;--b:#2dd4bf;background:linear-gradient(155deg,#fff,#edfffb)}
.indigo-card{--a:#4f46e5;--b:#818cf8;background:linear-gradient(155deg,#fff,#f1f2ff)}
.gold-card{--a:#a16207;--b:#f59e0b;background:linear-gradient(155deg,#fff,#fff9e7)}
.red-card{--a:#dc2626;--b:#fb7185;background:linear-gradient(155deg,#fff,#fff1f1)}
.purple-card{--a:#6d28d9;--b:#a855f7;background:linear-gradient(155deg,#fff,#f8efff)}
.sky-card{--a:#0284c7;--b:#38bdf8;background:linear-gradient(155deg,#fff,#effaff)}
.rose-card{--a:#be123c;--b:#fb7185;background:linear-gradient(155deg,#fff,#fff1f5)}
.lime-card{--a:#4d7c0f;--b:#84cc16;background:linear-gradient(155deg,#fff,#f6ffe7)}
.slate-card{--a:#334155;--b:#64748b;background:linear-gradient(155deg,#fff,#f1f5f9)}

/* DROPDOWNS INSIDE CARDS */
.level-dropdown{position:relative}
.level-dropdown summary{
  list-style:none;cursor:pointer;padding:11px 13px;border-radius:13px;
  color:white;font-weight:800;background:linear-gradient(90deg,var(--a),var(--b));
  box-shadow:0 8px 18px rgba(31,54,115,.13)
}
.level-dropdown summary::-webkit-details-marker{display:none}
.level-dropdown summary::after{content:"▾";float:right;transition:transform .2s}
.level-dropdown[open] summary::after{transform:rotate(180deg)}
.drop-links{
  position:absolute;z-index:20;left:0;right:0;top:calc(100% + 7px);
  padding:8px;border-radius:14px;background:white;border:1px solid rgba(30,60,110,.08);
  box-shadow:0 18px 42px rgba(24,39,75,.18)
}
.drop-links a{
  display:block;padding:9px 10px;border-radius:9px;color:#213a63;font-size:14px;font-weight:700
}
.drop-links a:hover{color:white;background:linear-gradient(90deg,var(--a),var(--b))}

/* SUBJECTS */
.subject-panel{
  margin-bottom:48px;padding:30px;border-radius:28px;
  background:linear-gradient(135deg,#eaf8ff,#fff8d8 50%,#f5ebff);
  box-shadow:var(--shadow)
}
.subject-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.subject-pills a{
  padding:11px 15px;border-radius:999px;background:white;color:#253d66;font-weight:800;
  border:1px solid rgba(30,60,120,.08);transition:.25s
}
.subject-pills a:hover{transform:translateY(-3px);color:white;background:linear-gradient(90deg,#0e8a83,#2866ed,#7f42ea)}

/* CTA + GENERIC */
.bottom-cta{
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  margin-bottom:55px;padding:36px;border-radius:30px;color:white;
  background:linear-gradient(110deg,#0f766e,#2563eb 50%,#7c3aed);box-shadow:0 24px 55px rgba(38,72,190,.25)
}
.bottom-cta h2{font-size:clamp(30px,4vw,45px);margin:10px 0}
.bottom-cta p{color:rgba(255,255,255,.82)}
.white-pill{background:white;color:#2e48aa}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:#fff;border-radius:22px;padding:18px;box-shadow:var(--shadow)}
.book-cover{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:16px;background:#eef2ff}
.btn{display:inline-block;padding:11px 17px;border-radius:999px;color:#fff;background:linear-gradient(90deg,#2563eb,#7043e8)}
.btn.alt{background:linear-gradient(90deg,#0f766e,#14b8a6)}.btn.warn{background:linear-gradient(90deg,#ea580c,#f59e0b)}
.form{max-width:700px;background:#fff;padding:24px;border-radius:20px;box-shadow:var(--shadow)}
input,select,textarea{width:100%;padding:12px;margin:7px 0 16px;border:1px solid #cbd5e1;border-radius:12px}
.notice{padding:14px 16px;border-radius:14px;background:#ecfeff;margin:16px 0}.error{background:#fee2e2}.success{background:#dcfce7}
.site-footer{margin-top:50px;padding:34px 0;background:#0f172a;color:white}

@keyframes floatBall{0%,100%{transform:translate(-50%,-50%) translateY(0)}50%{transform:translate(-50%,-50%) translateY(-12px)}}
@keyframes floatChip{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

@media(max-width:1050px){.levels-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){
  .mc-hero{grid-template-columns:1fr;padding:34px}.hero-math{display:none}
  .levels-grid{grid-template-columns:repeat(2,1fr)}
  .bottom-cta{align-items:flex-start;flex-direction:column}
  .mobile-menu-btn{display:block}
  .nav{position:relative}
  .nav nav{display:none;position:absolute;left:0;right:0;top:65px;flex-direction:column;align-items:stretch;padding:12px;background:#245fd8;border-radius:0 0 16px 16px}
  .nav nav.open{display:flex}
  .nav-drop-menu{position:static;width:auto;margin-top:5px}
}
@media(max-width:560px){
  .wrap{width:min(100% - 22px,1180px)}
  .mc-hero{padding:25px 20px;border-radius:24px}.mc-hero h1{font-size:42px;letter-spacing:-2px}
  .levels-grid{grid-template-columns:1fr}.level-card{min-height:auto}.level-card>p{min-height:0}
  .drop-links{position:static;margin-top:7px}.subject-panel,.bottom-cta{padding:23px;border-radius:22px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}