/* codingwith.org - dark, code-themed landing */
:root{
  --bg:#0b0f17; --bg2:#11161f; --card:#151b26; --line:#222b3a;
  --ink:#e8edf5; --dim:#9aa7bd; --mut:#6b7689;
  --claude:#9bc400; --claude2:#b6e23a;     /* matches the lime Claude book cover */
  --gpt:#f0641e; --gpt2:#ff8a45;           /* matches the orange GPT book cover */
  --grad1:#7c5cff; --grad2:#2bd4c0;
  --radius:16px; --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.6 "Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
code,pre{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* nav */
.site-nav{
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--max);margin:0 auto;padding:20px 24px;
}
.brand{font-weight:800;font-size:1.2rem;letter-spacing:-.02em}
.brand-mark{color:var(--grad2);font-family:monospace;margin-right:2px}
.brand-accent{background:linear-gradient(90deg,var(--grad1),var(--grad2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.site-nav nav{display:flex;gap:22px;align-items:center}
.site-nav nav a{color:var(--dim);font-weight:600;font-size:.95rem}
.site-nav nav a:hover{color:var(--ink)}
.nav-cta{padding:8px 16px;border:1px solid var(--line);border-radius:999px;color:var(--ink)!important}
.nav-cta:hover{border-color:var(--grad2)}
.nav-signup{display:flex;gap:6px;align-items:center}
.nav-signup input[type="text"]{display:none}
.nav-signup input[type="email"]{padding:8px 12px;border-radius:8px;border:1px solid var(--line);
  background:#0e131c;color:var(--ink);font:inherit;font-size:.9rem;width:170px}
.nav-signup input[type="email"]:focus{outline:none;border-color:var(--grad2)}
.nav-signup button{padding:8px 15px;border:0;border-radius:8px;font-weight:700;cursor:pointer;white-space:nowrap;
  background:linear-gradient(135deg,var(--grad1),var(--grad2));color:#08101a}
.nav-signup button:hover{filter:brightness(1.08)}

main{max-width:var(--max);margin:0 auto;padding:0 24px}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  padding:60px 0 40px}
.kicker{color:var(--grad2);font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  font-size:.78rem;margin:0 0 14px}
.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.05;margin:0 0 18px;
  letter-spacing:-.03em;font-weight:800}
.grad{background:linear-gradient(90deg,var(--grad1),var(--grad2));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--dim);font-size:1.1rem;max-width:34em;margin:0 0 26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 22px;border-radius:12px;font-weight:700;
  border:1px solid transparent;transition:transform .12s ease,filter .12s ease}
.btn:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn-claude{background:linear-gradient(135deg,var(--claude),var(--claude2));color:#1a0f0a}
.btn-gpt{background:linear-gradient(135deg,var(--gpt),var(--gpt2));color:#04140f}
.hero-code{background:var(--bg2);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;margin:0;font-size:.92rem;color:var(--dim);overflow:auto}
.hero-code .c-ok{color:var(--gpt2)}
.hero-code .c-dim{color:var(--mut)}

/* books */
.books{display:flex;flex-direction:column;gap:30px;padding:24px 0 50px}
.book{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 44px;position:relative;overflow:hidden;
  display:flex;align-items:center;gap:50px}
.book-claude{flex-direction:row-reverse}   /* Book One: cover on the RIGHT */
.book-gpt{flex-direction:row}              /* Book Two: cover on the LEFT */
.book-body{flex:1 1 auto;min-width:0}
.book::before{content:"";position:absolute;inset:0 0 auto 0;height:4px}
.book-claude::before{background:linear-gradient(90deg,var(--claude),var(--claude2))}
.book-gpt::before{background:linear-gradient(90deg,var(--gpt),var(--gpt2))}
.book-cover{display:block;flex:0 0 auto;width:330px;max-width:40%;height:auto;}
.book-badge{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--mut);margin-bottom:10px}
.book h2{font-size:1.7rem;margin:0 0 6px;letter-spacing:-.02em}
.book-claude h2{color:var(--claude2)}
.book-gpt h2{color:var(--gpt2)}
.book-sub{color:var(--dim);font-weight:600;margin:0 0 14px}
.book p{color:var(--dim)}
.book-points{list-style:none;padding:0;margin:16px 0 22px}
.book-points li{padding:6px 0 6px 30px;position:relative;color:var(--ink)}
.book-points li::before{content:"";position:absolute;left:0;top:9px;width:18px;height:18px;
  background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232bd4c0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E")}

/* newsletter */
.newsletter{text-align:center;background:var(--bg2);border:1px solid var(--line);
  border-radius:var(--radius);padding:46px 24px;margin:0 0 60px}
.newsletter h2{font-size:1.9rem;margin:0 0 8px;letter-spacing:-.02em}
.newsletter p{color:var(--dim);max-width:38em;margin:0 auto 22px}
.signup{display:flex;gap:10px;max-width:460px;margin:0 auto;flex-wrap:wrap}
.signup input{flex:1;min-width:220px;padding:14px 16px;border-radius:12px;
  border:1px solid var(--line);background:#0e131c;color:var(--ink);font:inherit}
.signup input:focus{outline:none;border-color:var(--grad2)}
.signup button{padding:14px 22px;border:0;border-radius:12px;font-weight:700;cursor:pointer;
  background:linear-gradient(135deg,var(--grad1),var(--grad2));color:#08101a}
.signup button:hover{filter:brightness(1.08)}
.form-ok{color:var(--gpt2);font-weight:700}
.form-err{color:var(--claude2);font-weight:700}

/* legal pages */
.legal-page{color:var(--ink)}
.legal-page h1{letter-spacing:-.02em}
.legal-page h2{color:var(--grad2);margin-top:1.8em}
.legal-page a{color:var(--grad2)}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:30px}
.foot-grid{max-width:var(--max);margin:0 auto;padding:40px 24px 20px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.foot-brand{font-weight:800;font-size:1.1rem}
.foot-tag{color:var(--mut);font-weight:400;font-size:.92rem;margin:10px 0 0}
.foot-links,.foot-contact{display:flex;flex-direction:column;gap:10px;padding-top:6px}
.foot-links a,.foot-contact a{color:var(--dim);font-size:.95rem}
.foot-links a:hover,.foot-contact a:hover{color:var(--ink)}
.foot-legal{max-width:var(--max);margin:0 auto;padding:16px 24px 30px;
  color:var(--mut);font-size:.85rem;border-top:1px solid var(--line)}

@media(max-width:820px){
  .hero{grid-template-columns:1fr;gap:26px}
  .book,.book-claude,.book-gpt{flex-direction:column;gap:22px;padding:28px 24px;text-align:center}
  .book-cover{width:240px;max-width:72%;margin:0 auto}
  .book-points{display:inline-block;text-align:left}
  .foot-grid{grid-template-columns:1fr;gap:18px}
  .site-nav nav{gap:14px}
  .nav-signup input[type="email"]{width:130px}
}