:root{
  --bg:#0b0f19;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text:#e9eefc;
  --muted: rgba(233,238,252,.72);
  --line: rgba(255,255,255,.14);
  --shadow: 0 18px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --radius2: 26px;
  --max: 1120px;
  --focus: 0 0 0 3px rgba(120,170,255,.35);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1000px 700px at 20% -10%, rgba(120,170,255,.18), transparent 55%),
              radial-gradient(900px 600px at 90% 0%, rgba(255,120,190,.12), transparent 60%),
              var(--bg);
  color:var(--text);
  line-height:1.5;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration: underline; text-decoration-color: rgba(255,255,255,.35); }

img{ max-width:100%; display:block; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.skip{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  left:12px; top:12px; width:auto; height:auto;
  padding:10px 12px;
  background: rgba(0,0,0,.7);
  border:1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
  outline:none;
}

.header{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(11,15,25,.55);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 0;
  gap: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 12px;
}
.brand__mark{
  width: 38px; height: 38px;
  display:grid; place-items:center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(120,170,255,.28), rgba(255,120,190,.22));
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
  font-weight: 800;
  letter-spacing:.5px;
}
.brand__text{ display:flex; flex-direction:column; line-height:1.1; }
.brand__text small{ color: var(--muted); font-size: 12px; margin-top: 2px; }

.nav{
  display:flex;
  align-items:center;
  gap: 18px;
}
.nav a{ color: var(--muted); font-weight: 600; font-size: 14px; }
.nav a:hover{ color: var(--text); text-decoration:none; }

.navToggle{
  display:none;
  width: 42px; height: 40px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: var(--text);
}
.navToggle span{
  display:block;
  width: 18px; height: 2px;
  background: rgba(233,238,252,.85);
  margin: 4px auto;
  border-radius: 99px;
}

.hero{
  position: relative;
  padding: 54px 0 24px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 24px;
  align-items: start;
}
.hero__copy{ padding-top: 14px; }
.kicker{
  display:inline-block;
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
  letter-spacing:.4px;
}
h1{
  margin: 14px 0 12px;
  font-size: clamp(32px, 4vw, 50px);
  line-height:1.06;
  letter-spacing: -0.6px;
}
.lead{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  max-width: 62ch;
}
.hero__cta{ display:flex; gap: 12px; flex-wrap:wrap; margin-top: 16px; }
.hero__badges{
  display:flex; gap:10px; flex-wrap:wrap;
  margin-top: 18px;
}
.badge{
  font-size: 12px;
  color: rgba(233,238,252,.78);
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  padding: 6px 10px;
  border-radius: 999px;
}

.hero__fade{
  position:absolute; inset:auto 0 0 0; height: 90px;
  background: linear-gradient(to bottom, transparent, rgba(11,15,25,1));
  pointer-events:none;
}

.section{
  padding: 38px 0;
}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 14px;
  margin-bottom: 14px;
}
.section__head h2{ margin:0; font-size: 26px; letter-spacing:-.3px; }
.muted{ color: var(--muted); }

.grid{
  display:grid;
  gap: 16px;
}
.grid--books{
  grid-template-columns: repeat(3, 1fr);
}
.grid--about{
  grid-template-columns: 1fr 1fr;
}
.grid--newsletter{
  grid-template-columns: 1.1fr .9fr;
  align-items: start;
}
.grid--contact{
  grid-template-columns: 1.1fr .9fr;
  align-items: start;
}

.card{
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius2);
  box-shadow: 0 14px 46px rgba(0,0,0,.28);
  padding: 18px;
}
.card--subtle{
  background: rgba(255,255,255,.04);
  box-shadow:none;
}
.card--glow{
  background:
    radial-gradient(800px 420px at 10% 0%, rgba(120,170,255,.18), transparent 60%),
    radial-gradient(700px 420px at 100% 0%, rgba(255,120,190,.14), transparent 62%),
    rgba(255,255,255,.06);
}

.card__top{
  display:flex; gap: 14px; align-items:center;
}
.card__title{ margin:0; font-size: 16px; }
.card__sub{ margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.avatar{
  width: 56px; height: 56px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  overflow:hidden;
  position:relative;
  flex: 0 0 auto;
}
.avatar img{ width:100%; height:100%; object-fit:cover; }
.avatar__fallback{
  position:absolute; inset:0;
  display:grid; place-items:center;
  font-weight: 900;
  color: rgba(233,238,252,.88);
}
.avatar--fallback .avatar__fallback{ display:grid; }

.readingList{
  margin: 14px 0 0;
  padding-left: 18px;
  color: rgba(233,238,252,.86);
}
.readingList li{ margin: 8px 0; }
.fineprint{
  margin: 12px 0 0;
  font-size: 12px;
  color: rgba(233,238,252,.62);
}

.book{
  display:flex;
  flex-direction:column;
  padding: 14px;
}
.book__cover{
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  overflow:hidden;
  aspect-ratio: 3 / 4;
  display:grid;
  place-items:center;
}
.cover__fallback{
  color: rgba(233,238,252,.55);
  font-weight: 800;
  letter-spacing:.5px;
}
.cover--fallback{ display:grid; place-items:center; }
.book__body{ padding-top: 12px; }
.book__body h3{ margin: 0 0 6px; }
.book__links{ display:flex; gap: 10px; flex-wrap:wrap; margin-top: 12px; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(233,238,252,.92);
  color: #0b0f19;
  font-weight: 800;
  font-size: 14px;
  cursor:pointer;
  text-decoration:none;
  transition: transform .08s ease, background .12s ease;
}
.btn:hover{ transform: translateY(-1px); text-decoration:none; }
.btn:focus{ outline:none; box-shadow: var(--focus); }

.btn--ghost{
  background: rgba(255,255,255,.06);
  color: var(--text);
}
.btn--sm{
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
}

.list{
  margin: 10px 0 0;
  padding-left: 18px;
  color: rgba(233,238,252,.84);
}
.list li{ margin: 8px 0; }

.newsletterBox{ display:flex; flex-direction:column; gap: 10px; }
.hr{
  width: 100%;
  border: none;
  border-top: 1px solid rgba(255,255,255,.12);
  margin: 8px 0;
}

.form{
  display:flex;
  flex-direction:column;
  gap: 12px;
}
label{
  display:flex;
  flex-direction:column;
  gap: 6px;
  font-weight: 700;
  font-size: 13px;
  color: rgba(233,238,252,.86);
}
input, textarea{
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  padding: 12px 12px;
  color: var(--text);
  font-size: 14px;
}
input:focus, textarea:focus{
  outline:none;
  box-shadow: var(--focus);
  border-color: rgba(120,170,255,.45);
}
.form__row{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  align-items:center;
}

.links{
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.links a{
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: rgba(233,238,252,.82);
}
.links a:hover{
  color: var(--text);
  text-decoration:none;
  background: rgba(255,255,255,.06);
}

.divider{
  height: 1px;
  background: rgba(255,255,255,.12);
  margin: 16px 0;
}

.footer{
  padding: 28px 0 40px;
  border-top: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.12);
}
.footer__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
}
.footer__links{ display:flex; gap: 14px; color: rgba(233,238,252,.70); }

.modal{
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  background: rgba(15,20,34,.95);
  color: var(--text);
  box-shadow: var(--shadow);
  padding: 0;
}
.modal::backdrop{
  background: rgba(0,0,0,.55);
}
.modal__box{ padding: 18px; width: min(560px, calc(100vw - 40px)); }

/* Responsive */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .grid--books{ grid-template-columns: 1fr; }
  .grid--about, .grid--newsletter, .grid--contact{ grid-template-columns: 1fr; }
  .section__head{ flex-direction:column; align-items:flex-start; }
  .nav{ display:none; }
  .navToggle{ display:block; }
  .nav.isOpen{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap: 12px;
    position:absolute;
    right: 20px;
    top: 64px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,.14);
    background: rgba(11,15,25,.92);
    box-shadow: var(--shadow);
    width: min(260px, calc(100vw - 40px));
  }
}