/* ==========================================================================
   EDU Online English — Site Theme
   Navy #0A2A52 + Gold #E0A93B | "Learning Made Easy"
   ========================================================================== */
:root{
  /* Brand core */
  --navy:#0A2A52; --gold:#E0A93B;
  /* Navy scale */
  --navy-900:#061a34; --navy-800:#0a2a52; --navy-700:#123a6b; --navy-600:#1c4c85;
  --navy-500:#2c5f9e; --navy-300:#7d9bc4; --navy-100:#d7e1ef; --navy-050:#eef3f9;
  /* Gold scale */
  --gold-700:#b8862a; --gold-600:#cc9832; --gold-500:#e0a93b; --gold-400:#ecbb5c;
  --gold-300:#f4d18d; --gold-100:#fbeecb; --gold-050:#fdf7e9;
  /* Neutrals */
  --white:#fff; --bg:#f7f8fa; --gray-200:#e2e6ec; --gray-600:#5a6473; --ink:#1a1a1a;
  /* Roles */
  --text:var(--ink); --muted:var(--gray-600); --heading:var(--navy);
  --on-brand:#fff; --on-accent:var(--navy-900);
  --border:var(--gray-200); --link:var(--navy-600); --link-hover:var(--gold-600);
  /* Radius / shadow */
  --r-sm:8px; --r-md:14px; --r-lg:22px; --r-pill:999px;
  --sh-sm:0 1px 2px rgba(10,42,82,.06); --sh-md:0 6px 18px rgba(10,42,82,.10);
  --sh-lg:0 16px 40px rgba(10,42,82,.18);
  /* Type */
  --font-head:"Poppins","Segoe UI",system-ui,sans-serif;
  --font-body:"Inter","Segoe UI",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body),system-ui,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-head),sans-serif;color:var(--heading);line-height:1.2;font-weight:800}
a{color:var(--link);text-decoration:none;transition:color .2s}
a:hover{color:var(--link-hover)}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
section{position:relative}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 30px;border-radius:var(--r-pill);border:none;cursor:pointer;
  font-family:var(--font-head),sans-serif;font-weight:700;font-size:16px;
  text-decoration:none;transition:transform .2s,background .2s,box-shadow .2s;
  will-change:transform;
}
.btn:active{transform:translateY(2px)}
.btn-primary{background:var(--gold);color:var(--on-accent);box-shadow:0 6px 18px rgba(224,169,59,.35)}
.btn-primary:hover{background:var(--gold-600);transform:translateY(-2px);box-shadow:0 10px 26px rgba(224,169,59,.45)}
.btn-secondary{background:var(--navy);color:var(--on-brand)}
.btn-secondary:hover{background:var(--navy-700);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--on-brand);box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-lg{padding:18px 40px;font-size:18px}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(38px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}
.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}
.reveal.d5{transition-delay:.5s}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ==========================================================================
   COOKIE CONSENT BANNER  (shared across all pages)
   ========================================================================== */
.cookie-banner{
  position:fixed;left:0;right:0;bottom:0;z-index:9999;
  background:var(--navy-900);color:#e6edf6;
  padding:18px 24px;box-shadow:0 -6px 30px rgba(0,0,0,.35);
  transform:translateY(120%);transition:transform .45s cubic-bezier(.2,.8,.2,1);
  border-top:3px solid var(--gold-500);
}
.cookie-banner.show{transform:translateY(0)}
.cookie-inner{
  max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:24px;
  flex-wrap:wrap;justify-content:space-between;
}
.cookie-text{flex:1 1 460px;font-size:14px;line-height:1.6;color:#cdd8e8}
.cookie-text strong{color:#fff;font-family:var(--font-head),sans-serif}
.cookie-text a{color:var(--gold-300);text-decoration:underline}
.cookie-text a:hover{color:var(--gold-400)}
.cookie-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}
.cookie-btn{
  padding:11px 24px;border-radius:var(--r-pill);font-weight:700;font-size:14px;
  cursor:pointer;border:none;font-family:var(--font-head),sans-serif;transition:transform .2s,background .2s,box-shadow .2s;
  text-decoration:none;display:inline-flex;align-items:center;justify-content:center;
}
.cookie-accept{background:var(--gold-500);color:var(--navy-900);box-shadow:0 4px 14px rgba(224,169,59,.35)}
.cookie-accept:hover{background:var(--gold-400);transform:translateY(-2px)}
.cookie-decline{background:transparent;color:#cdd8e8;box-shadow:inset 0 0 0 2px rgba(255,255,255,.3)}
.cookie-decline:hover{background:rgba(255,255,255,.08);color:#fff}
@media(max-width:640px){
  .cookie-inner{flex-direction:column;align-items:stretch;gap:14px;text-align:center}
  .cookie-actions{justify-content:center}
}

/* ==========================================================================
   MOBILE MENU  (hamburger + slide-in drawer, shared across all pages)
   ========================================================================== */
.nav-toggle{
  display:none;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.25);
  cursor:pointer;border-radius:10px;
  width:46px;height:46px;padding:11px 10px;flex:0 0 auto;z-index:1002;position:relative;
  margin-left:auto;
  /* stack the three bars VERTICALLY to form a hamburger */
  flex-direction:column;align-items:center;justify-content:space-between;
}
.nav-toggle span{
  display:block;height:3px;width:24px;background:#fff;border-radius:3px;
  transition:transform .3s,opacity .3s;
}
.nav-toggle.open span:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(82vw,340px);z-index:1001;
  background:var(--navy-900);box-shadow:-10px 0 40px rgba(0,0,0,.4);
  transform:translateX(100%);transition:transform .35s cubic-bezier(.2,.8,.2,1);
  padding:90px 28px 40px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer a{
  color:#e6edf6;font-size:17px;font-weight:600;padding:14px 16px;border-radius:12px;
  font-family:var(--font-head),sans-serif;transition:background .2s,color .2s;text-decoration:none;
}
.mobile-drawer a:hover,.mobile-drawer a.active{background:rgba(224,169,59,.14);color:var(--gold-300)}
.mobile-drawer a.drawer-cta{background:var(--gold-500);color:var(--navy-900);text-align:center;margin-top:12px;font-weight:800}
.mobile-drawer a.drawer-cta:hover{background:var(--gold-400);color:var(--navy-900)}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(6,26,52,.55);backdrop-filter:blur(2px);
  z-index:1000;opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s;
}
.drawer-overlay.open{opacity:1;visibility:visible}
@media(max-width:1180px){
  .nav-toggle{display:flex}
  /* Hide the desktop CTA on narrower screens — it lives in the drawer instead */
  .nav .nav-cta{display:none}
}

/* ==========================================================================
   LEGAL PAGES  (privacy / terms)
   ========================================================================== */
.legal-wrap{max-width:860px;margin:0 auto;padding:48px 24px 80px}
.legal-wrap h1{font-size:clamp(28px,4vw,40px);color:var(--navy);margin-bottom:8px}
.legal-updated{color:var(--muted);font-size:14px;margin-bottom:36px}
.legal-wrap h2{font-size:22px;color:var(--navy);margin:36px 0 12px;font-family:var(--font-head),sans-serif}
.legal-wrap h3{font-size:17px;color:var(--navy-700);margin:22px 0 8px;font-family:var(--font-head),sans-serif}
.legal-wrap p{margin-bottom:14px;color:#33404f;font-size:15.5px;line-height:1.8}
.legal-wrap ul{margin:0 0 16px 22px;color:#33404f;font-size:15.5px;line-height:1.8}
.legal-wrap li{margin-bottom:8px}
.legal-wrap a{color:var(--navy-600);text-decoration:underline}
.legal-wrap a:hover{color:var(--gold-600)}
.legal-toc{background:var(--navy-050);border-radius:var(--r-md);padding:22px 26px;margin-bottom:36px}
.legal-toc strong{display:block;color:var(--navy);margin-bottom:10px;font-family:var(--font-head),sans-serif}
.legal-toc ol{margin-left:20px;color:var(--navy-600)}
.legal-toc a{text-decoration:none;color:var(--navy-600)}
.legal-toc a:hover{color:var(--gold-600);text-decoration:underline}