/* ==========================================================
   Magnus Academy — home page (index.html) styles
   Dark animated hero — separate design system from the
   other pages (see css/style.css for those).
   ========================================================== */

  :root{
    --void:#00040a;
    --frame-top:#060c1c;
    --frame-bot:#020611;
    --line:rgba(255,255,255,0.09);
    --ink:#f4f7fb;
    --ink-dim:rgba(244,247,251,0.58);
    --ink-faint:rgba(244,247,251,0.34);
    --blue:#1689fe;
    --cyan:#74e8ff;
    --violet:#8b7cff;
    --frame-radius:30px;
    --button-ink:#05070f;
    --overlay:rgba(2,6,17,0.55);
  }

  html[data-theme="light"]{
    --void:#edf4ff;
    --frame-top:#ffffff;
    --frame-bot:#e9f2ff;
    --line:rgba(20,55,100,0.14);
    --ink:#10213b;
    --ink-dim:rgba(16,33,59,0.66);
    --ink-faint:rgba(16,33,59,0.4);
    --button-ink:#ffffff;
    --overlay:rgba(225,237,255,0.42);
  }

  html[data-theme="light"] .hero-copy h1,
  html[data-theme="light"] .hero-copy p,
  html[data-theme="light"] .hero-copy .cta-row{
    text-shadow:none;
  }

  html[data-theme="light"] .hero-copy h1 .line,
  html[data-theme="light"] .hero-copy h1 .word,
  html[data-theme="light"] .hero-copy h1 .char{
    background:transparent;
  }

  *{ box-sizing:border-box; }
  html,body{ margin:0; padding:0; }
  body{
    background:var(--void);
    color:var(--ink);
    font-family:'Manrope', system-ui, sans-serif;
    min-height:100svh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:22px;
  }

  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; }

  .frame{
    position:relative;
    width:100%;
    max-width:1280px;
    min-height:min(760px, 92svh);
    border-radius:var(--frame-radius);
    overflow:hidden;
    background:
      radial-gradient(ellipse 70% 55% at 50% 40%, rgba(22,137,254,0.16), transparent 60%),
      linear-gradient(180deg, var(--frame-top), var(--frame-bot));
    border:1px solid var(--line);
    box-shadow:
      0 0 0 1px rgba(255,255,255,0.02) inset,
      0 0 18px rgba(22,137,254,0.12),
      0 40px 120px rgba(2,6,17,0.7),
      0 0 160px rgba(22,137,254,0.10);
    animation:frameGlow 6s ease-in-out infinite;
    display:flex;
    flex-direction:column;
  }

  #particle-canvas{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    z-index:0;
    opacity:0.85;
  }

  .frame::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg, transparent 40%, var(--overlay) 100%);
    pointer-events:none;
    z-index:1;
  }

  /* ---------- nav ---------- */
  nav{
    position:relative;
    z-index:5;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:26px 34px;
  }

  .brand{
    position:relative;
    z-index:10;
    display:flex;
    align-items:center;
    gap:10px;
    font-weight:700;
    font-size:0.95rem;
    letter-spacing:0.02em;
  }

  .brand svg{ display:block; }

  .brand-mark{
    width:22px;
    height:22px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:0;
    border:0;
    background:transparent;
    color:var(--ink);
    cursor:pointer;
  }
  .brand-mark:focus-visible{
    outline:2px solid var(--cyan);
    outline-offset:4px;
    border-radius:6px;
  }
  .theme-menu{
    position:absolute;
    top:calc(100% + 12px);
    left:-8px;
    z-index:20;
    min-width:132px;
    padding:6px;
    border:1px solid var(--line);
    border-radius:14px;
    background:var(--frame-top);
    box-shadow:0 16px 36px rgba(2,6,17,0.2);
    pointer-events:auto;
  }
  .theme-menu[hidden]{ display:none; }
  .theme-menu a{
    display:block;
    width:100%;
    padding:9px 12px;
    border:0;
    border-radius:9px;
    background:transparent;
    color:var(--ink);
    text-align:left;
    font:600 0.8rem/1.2 'Manrope', system-ui, sans-serif;
    cursor:pointer;
    pointer-events:auto;
    touch-action:manipulation;
    user-select:none;
    -webkit-tap-highlight-color:transparent;
    text-decoration:none;
  }
  .theme-menu a:hover,
  .theme-menu a[aria-checked="true"]{
    background:rgba(22,137,254,0.12);
    color:var(--ink);
  }

  .nav-links{
    display:flex;
    align-items:center;
    gap:12px;
    font-size:0.88rem;
    color:var(--ink-dim);
  }

  .nav-links a{
    padding:8px 12px;
    border-radius:10px;
    transition:color .25s ease, background-color .25s ease;
  }
  .nav-links a:hover, .nav-links a:focus-visible{
    color:var(--ink);
    background:rgba(22,137,254,0.12);
    outline:none;
  }

  .nav-actions{
    display:flex;
    align-items:center;
    gap:14px;
  }

  .btn-ghost{
    font-size:0.85rem;
    color:var(--ink-dim);
    padding:10px 14px;
    border-radius:10px;
    transition:color .25s ease, background-color .25s ease;
  }
  .btn-ghost:hover, .btn-ghost:focus-visible{
    color:var(--ink);
    background:rgba(22,137,254,0.12);
    outline:none;
  }

  .btn-pill{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:#f4f7fb;
    color:var(--button-ink);
    font-weight:600;
    font-size:0.85rem;
    padding:11px 20px;
    border-radius:999px;
    border:none;
    cursor:pointer;
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .btn-pill:hover{ transform:translateY(-1px); box-shadow:0 10px 30px rgba(244,247,251,0.18); }
  .btn-pill .arrow{ transition:transform .25s ease; }
  .btn-pill:hover .arrow{ transform:translate(2px,-1px); }

  /* ---------- hero ---------- */
  .hero{
    position:relative;
    z-index:5;
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
    padding:20px 44px 56px;
  }

  .hero-copy{
    position:relative;
    z-index:2;
    max-width:640px;
  }

  .hero-copy h1,
  .hero-copy p,
  .hero-copy .cta-row{
    text-shadow:0 4px 30px rgba(2,6,17,0.9);
  }

  h1{
    margin:0;
    font-weight:700;
    letter-spacing:-0.03em;
    line-height:1.03;
    font-size:clamp(2.4rem, 4.6vw, 4rem);
    text-wrap:balance;
  }

  h1 .line{ display:block; overflow:hidden; }
  h1 .line{ padding-bottom:0.12em; margin-bottom:-0.12em; }
  h1 .word{ display:inline-block; }
  h1 .char{ display:inline-block; }

  .hero-copy p{
    margin:22px auto 0;
    max-width:440px;
    font-size:1rem;
    line-height:1.6;
    color:var(--ink-dim);
    font-weight:400;
    opacity:0;
    transform:translateY(16px);
    animation:fadeUp 1.4s cubic-bezier(.16,1,.3,1) 1.6s forwards;
  }

  .cta-row{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:22px;
    margin-top:32px;
    opacity:0;
    transform:translateY(16px);
    animation:fadeUp 1.4s cubic-bezier(.16,1,.3,1) 2s forwards;
  }

  @keyframes fadeUp{ to{ opacity:1; transform:translateY(0); } }

  @keyframes frameGlow{
    0%,100%{
      box-shadow:
        0 0 0 1px rgba(255,255,255,0.02) inset,
        0 0 18px rgba(22,137,254,0.12),
        0 40px 120px rgba(2,6,17,0.7),
        0 0 160px rgba(22,137,254,0.10);
    }
    50%{
      box-shadow:
        0 0 0 1px rgba(255,255,255,0.04) inset,
        0 0 30px rgba(116,232,255,0.24),
        0 40px 120px rgba(2,6,17,0.7),
        0 0 190px rgba(22,137,254,0.18);
    }
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    gap:10px;
    background:rgba(255,255,255,0.07);
    border:1px solid rgba(255,255,255,0.16);
    backdrop-filter:blur(14px);
    color:var(--ink);
    font-weight:600;
    font-size:0.92rem;
    padding:14px 24px;
    border-radius:999px;
    cursor:pointer;
    box-shadow:inset 0 1px 0 rgba(255,255,255,0.08), 0 18px 50px rgba(0,90,255,0.14);
    transition:transform .3s ease, border-color .3s ease, background .3s ease;
  }
  .btn-primary:hover{ transform:translateY(-2px); border-color:rgba(120,199,255,0.5); background:rgba(22,137,254,0.16); }
  .btn-primary .arrow{ transition:transform .3s ease; }
  .btn-primary:hover .arrow{ transform:translate(3px,-2px); }

  .btn-secondary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:0.88rem;
    color:var(--ink-dim);
    background:rgba(255,255,255,0.035);
    border:1px solid rgba(244,247,251,0.18);
    padding:13px 24px;
    border-radius:999px;
    transition:color .25s ease, border-color .25s ease, background .25s ease, transform .25s ease;
  }
  .btn-secondary:hover{
    color:var(--ink);
    border-color:rgba(116,232,255,0.5);
    background:rgba(22,137,254,0.12);
    transform:translateY(-2px);
  }

  /* ---------- responsive ---------- */
  @media (max-width: 640px){
    nav{
      padding:20px 22px;
    }
    .nav-actions{ margin-left:auto; }
    .nav-links{ display:none; }
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      padding:8px 0;
      font-size:0.78rem;
      font-weight:600;
      color:var(--ink);
    }
    .btn-pill{ display:none; }
    .hero{ padding:8px 24px 40px; }
  }

  @media (prefers-reduced-motion: reduce){
    * { animation-duration:0.01ms !important; transition-duration:0.01ms !important; }
  }