/* Green Protocol — author site
   Palette and type derived directly from the book cover:
   circuit-black ground, electric-green linework, white serif title, amber arc accent. */

:root{
  --ink:        #02090b;   /* deepest background */
  --panel:      #061417;   /* raised panel */
  --panel-2:    #0a1d21;   /* hover / borders */
  --grid:       #103a36;   /* faint circuit lines */
  --green:      #36e0a4;   /* electric green */
  --green-dim:  #1f8f74;
  --amber:      #ffb31a;   /* the arc */
  --amber-soft: #ffd36b;
  --paper:      #eef3f1;   /* near-white text */
  --muted:      #8aa6a0;   /* secondary text */
  --line:       #16332f;
  --maxw:       1080px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:"Spectral","Iowan Old Style",Georgia,serif;
  font-size:18px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  /* faint circuit texture */
  background-image:
    linear-gradient(transparent 0,transparent calc(100% - 1px),rgba(16,58,54,.18) 100%),
    linear-gradient(90deg,transparent 0,transparent calc(100% - 1px),rgba(16,58,54,.18) 100%);
  background-size:54px 54px,54px 54px;
}

img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--amber-soft)}

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

/* ---------- type ---------- */
h1,h2,h3{font-weight:600;line-height:1.12;letter-spacing:-.01em;margin:0 0 .4em}
.display{
  font-family:"Spectral","Iowan Old Style",Georgia,serif;
  font-weight:700;text-transform:uppercase;letter-spacing:.02em;
}
.eyebrow{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.72rem;letter-spacing:.32em;text-transform:uppercase;
  color:var(--green);margin:0 0 1rem;
}
.lede{font-size:1.18rem;color:var(--paper)}
.muted{color:var(--muted)}

/* ---------- nav ---------- */
header.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(2,9,11,.86);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--paper);display:flex;align-items:center;gap:.6em;
}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);
  box-shadow:0 0 10px 2px rgba(255,179,26,.7)}
.nav nav{display:flex;gap:1.4rem;flex-wrap:wrap}
.nav nav a{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
}
.nav nav a:hover,.nav nav a[aria-current="page"]{color:var(--green)}
.menu-btn{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;
  padding:.85em 1.4em;border-radius:2px;border:1px solid var(--green-dim);
  color:var(--ink);background:var(--green);font-weight:600;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-2px);background:var(--amber);color:var(--ink);
  box-shadow:0 6px 24px -8px rgba(255,179,26,.6)}
.btn.ghost{background:transparent;color:var(--green);border-color:var(--line)}
.btn.ghost:hover{background:var(--panel-2);color:var(--amber-soft);border-color:var(--green-dim)}
.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;background:var(--panel-2);
  color:var(--muted);border-color:var(--line)}

/* ---------- sections ---------- */
section{padding:84px 0}
.section-label{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.7rem;letter-spacing:.3em;text-transform:uppercase;color:var(--green-dim);
  display:flex;align-items:center;gap:1rem;margin-bottom:2.4rem;
}
.section-label::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- hero ---------- */
.hero{padding:0;border-bottom:1px solid var(--line);overflow:hidden;position:relative}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding-top:80px;padding-bottom:80px}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem)}
.hero .tag{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  color:var(--amber-soft);font-size:.84rem;letter-spacing:.16em;text-transform:uppercase;
  border-left:2px solid var(--amber);padding-left:1rem;margin:1.6rem 0 2rem;
}
.hero-cta{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:1.6rem}
.cover-frame{position:relative;justify-self:center}
.cover-frame img{
  border-radius:3px;box-shadow:0 30px 70px -30px rgba(0,0,0,.9),
  0 0 0 1px var(--line);max-width:340px;
}
.cover-frame::after{ /* amber arc glow behind cover */
  content:"";position:absolute;inset:-40px;z-index:-1;border-radius:50%;
  background:radial-gradient(circle at 60% 55%,rgba(255,179,26,.22),transparent 60%);
  filter:blur(8px);
}

/* ---------- formats grid ---------- */
.formats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.format{
  background:var(--panel);border:1px solid var(--line);border-radius:4px;
  padding:28px 24px;display:flex;flex-direction:column;gap:.5rem;
  transition:border-color .18s ease,transform .18s ease;
}
.format:hover{border-color:var(--green-dim);transform:translateY(-3px)}
.format .fmt-name{font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--green)}
.format .price{font-size:1.5rem;font-weight:700;color:var(--paper);margin:.2rem 0}
.format .price small{font-size:.8rem;color:var(--muted);font-weight:400}
.format p{color:var(--muted);font-size:.92rem;margin:.2rem 0 1rem;flex:1}
.format .src{font-family:"IBM Plex Mono",monospace;font-size:.66rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--green-dim);margin-bottom:1rem}

/* ---------- prose ---------- */
.prose{max-width:680px}
.prose p{margin:0 0 1.3em}
.prose .first::first-letter{
  font-size:3.4rem;float:left;line-height:.8;padding:.05em .14em 0 0;
  color:var(--amber);font-weight:700;
}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:240px 1fr;gap:48px;align-items:start}
.headshot{border-radius:4px;border:1px solid var(--line);
  box-shadow:0 16px 40px -22px rgba(0,0,0,.9);filter:grayscale(.1)}
.factbar{display:flex;gap:2.2rem;flex-wrap:wrap;margin:2rem 0;
  padding:1.2rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.fact .n{font-size:1.7rem;font-weight:700;color:var(--green);display:block;line-height:1}
.fact .l{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted)}

/* ---------- reviews ---------- */
.reviews{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.quote{
  background:var(--panel);border:1px solid var(--line);border-left:2px solid var(--amber);
  border-radius:4px;padding:30px 28px;
}
.quote p{font-size:1.12rem;font-style:italic;color:var(--paper);margin:0 0 1rem}
.quote .by{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--green)}
.reviews-empty{
  background:var(--panel);border:1px dashed var(--line);border-radius:4px;
  padding:48px;text-align:center;color:var(--muted);grid-column:1/-1;
}

/* ---------- contact ---------- */
.contact-card{
  background:var(--panel);border:1px solid var(--line);border-radius:4px;
  padding:40px;max-width:620px;
}
.contact-row{display:flex;gap:1rem;align-items:baseline;padding:1rem 0;
  border-bottom:1px solid var(--line)}
.contact-row:last-child{border-bottom:0}
.contact-row .k{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--green-dim);min-width:120px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:40px 0;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
footer .fnav{display:flex;gap:1.2rem;flex-wrap:wrap}
footer a{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted)}
footer .copy{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em}

/* ---------- page header ---------- */
.page-head{padding:70px 0 0}
.page-head h1{font-size:clamp(2rem,5vw,3.2rem)}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .hero .wrap{grid-template-columns:1fr;gap:36px;text-align:left}
  .cover-frame{order:-1}
  .cover-frame img{max-width:240px}
  .formats{grid-template-columns:1fr}
  .reviews{grid-template-columns:1fr}
  .about{grid-template-columns:1fr;gap:28px}
  .headshot{max-width:200px}
  .nav nav{display:none;position:absolute;top:62px;left:0;right:0;
    flex-direction:column;background:var(--ink);border-bottom:1px solid var(--line);
    padding:1rem 24px;gap:1rem}
  .nav nav.open{display:flex}
  .menu-btn{display:inline-flex;background:none;border:1px solid var(--line);
    color:var(--green);font-family:"IBM Plex Mono",monospace;font-size:.7rem;
    letter-spacing:.14em;text-transform:uppercase;padding:.5em .9em;border-radius:2px;cursor:pointer}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}