/* The Bionic Adviser — monochrome, clean, futuristic.
   Palette: ink black + paper white + greys. No accent colour. */

:root {
  --ink: #0a0a0a;
  --paper: #ffffff;
  --grey-900: #1a1a1a;
  --grey-600: #5f5f5f;
  --grey-400: #999999;
  --grey-200: #e6e6e6;
  --grey-100: #f4f4f2;
  --line: #ededed;

  --font-brand: "Orbitron", "Space Grotesk", sans-serif;
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, monospace;

  --maxw: 1080px;
  --gutter: clamp(20px, 5vw, 56px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-size: 17px;
}

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

a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.05; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); }
h3 { font-size: 1.2rem; }

.mono { font-family: var(--font-mono); letter-spacing: 0.04em; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey-400);
}
.lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--grey-600); max-width: 56ch; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper); color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
}
.nav .nav-emblem { filter: none; }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-brand); font-weight: 500; font-size: 0.98rem; letter-spacing: 0.04em; text-transform: uppercase; }
.brand svg { width: 26px; height: 26px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 0.92rem; color: var(--grey-600); transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-cta { border: 1px solid #3a3a3a; border-radius: 6px; padding: 8px 16px; color: var(--paper) !important; font-size: 0.88rem; transition: background .15s; }
.nav-cta:hover { background: #1f1f1f; }
.nav-toggle { display: none; background: none; border: 0; color: var(--ink); font-size: 1.5rem; cursor: pointer; }

@media (max-width: 760px) {
  .nav-links { position: fixed; inset: 64px 0 auto 0; flex-direction: column; background: var(--paper); padding: 20px var(--gutter); gap: 18px; align-items: flex-start; border-bottom: 1.5px solid var(--ink); transform: translateY(-120%); transition: transform .25s, visibility .25s; visibility: hidden; }
  .nav-links.open { transform: translateY(0); visibility: visible; }
  .nav-toggle { display: block; }
}

/* ---------- hero ---------- */
.hero { background: var(--ink); color: var(--paper); padding: clamp(70px, 12vw, 140px) 0 clamp(60px, 10vw, 120px); }
.hero h1 { max-width: 16ch; }
.hero .lead { color: #c9c9c9; margin-top: 26px; }
.hero .tags { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.14em; color: var(--grey-400); margin-top: 30px; text-transform: uppercase; }
.hero .tags span { color: #e4e4e4; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-body); font-size: 0.95rem; font-weight: 500; padding: 12px 22px; border-radius: 7px; border: 1px solid transparent; cursor: pointer; transition: transform .12s, background .15s, border-color .15s; }
.btn:active { transform: scale(0.98); }
.btn-solid { background: var(--paper); color: var(--ink); }
.btn-solid:hover { background: #e9e9e9; }
.btn-solid-dark { background: var(--ink); color: var(--paper); }
.btn-solid-dark:hover { background: #2a2a2a; }
.btn-ghost { border-color: #3a3a3a; color: var(--paper); }
.btn-ghost:hover { background: #1f1f1f; }
.btn-ghost-dark { border-color: var(--grey-200); color: var(--ink); }
.btn-ghost-dark:hover { background: var(--grey-100); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* listen-on row */
.listen { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.listen a { display: inline-flex; align-items: center; gap: 8px; border: 1px solid #333; border-radius: 7px; padding: 9px 16px; font-size: 0.9rem; color: #e4e4e4; transition: border-color .15s, color .15s; }
.listen a:hover { border-color: #666; color: #fff; }
.listen.dark a { border-color: var(--grey-200); color: var(--grey-900); }
.listen.dark a:hover { border-color: var(--ink); }

/* ---------- sections ---------- */
section { padding: clamp(56px, 9vw, 104px) 0; }
.section-head { max-width: 60ch; margin-bottom: 48px; }
.section-head h2 { margin-top: 12px; }

/* three-up "what this is" */
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.col { background: var(--paper); color: var(--ink); padding: 32px 28px; }
.col .mono { color: var(--grey-400); font-size: 0.7rem; letter-spacing: 0.2em; }
.col h3 { margin: 0 0 10px; }
.col p { color: var(--grey-600); font-size: 0.98rem; }

/* ---------- episode cards ---------- */
.ep-grid { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
.ep {
  display: grid; grid-template-columns: 84px 1fr auto; gap: 24px; align-items: center;
  padding: 28px 4px; border-bottom: 1px solid var(--line); transition: background .15s;
}
.ep:hover { background: var(--grey-100); }
.ep-num { font-family: var(--font-mono); }
.ep-num small { display: block; font-size: 0.66rem; color: var(--grey-400); letter-spacing: 0.18em; }
.ep-num b { font-family: var(--font-display); font-weight: 500; font-size: 2rem; letter-spacing: -0.02em; }
.ep-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.ep-body .pncons { display: flex; flex-wrap: wrap; gap: 16px; font-size: 0.82rem; font-family: var(--font-mono); color: var(--grey-600); }
.ep-body .pncons .pro::before { content: "+ "; color: var(--ink); }
.ep-body .pncons .con::before { content: "– "; color: var(--ink); }
.ep-meta { text-align: right; font-family: var(--font-brand); font-size: 0.74rem; letter-spacing: 0.02em; color: var(--grey-400); white-space: nowrap; }
.ep-play { display: inline-flex; align-items: center; gap: 7px; margin-top: 10px; background: var(--ink); color: var(--paper); border-radius: 20px; padding: 7px 16px; font-size: 0.82rem; font-family: var(--font-body); }
.ep-play:hover { background: #2a2a2a; }
@media (max-width: 640px) {
  .ep { grid-template-columns: 60px 1fr; }
  .ep-meta { grid-column: 2; text-align: left; margin-top: 6px; }
}

/* coming soon state */
.coming-soon { border: 1px dashed var(--grey-200); border-radius: 12px; padding: 56px 32px; text-align: center; }
.coming-soon .mono { color: var(--grey-400); letter-spacing: 0.2em; font-size: 0.72rem; }
.coming-soon h3 { font-size: 1.6rem; margin: 16px 0 10px; }
.coming-soon p { color: var(--grey-600); max-width: 46ch; margin: 0 auto; }

/* ---------- consultancy band ---------- */
.band { background: var(--ink); color: var(--paper); border-radius: 16px; padding: clamp(40px, 7vw, 72px); }
.band h2 { max-width: 18ch; }
.band .lead { color: #c9c9c9; margin-top: 18px; }
.band ul { list-style: none; margin: 28px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px 28px; }
.band ul li { font-size: 0.96rem; color: #d6d6d6; padding-left: 22px; position: relative; }
.band ul li::before { content: ""; position: absolute; left: 0; top: 11px; width: 9px; height: 1px; background: var(--paper); }

/* ---------- forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
label { display: block; font-size: 0.82rem; font-family: var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--grey-600); margin-bottom: 7px; }
input, select, textarea {
  width: 100%; font-family: var(--font-body); font-size: 1rem; color: var(--ink);
  background: var(--paper); border: 1px solid var(--grey-200); border-radius: 8px; padding: 12px 14px; transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--ink); }
textarea { resize: vertical; min-height: 130px; }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: #b8b8b8; padding: 64px 0 40px; border-top: 1px solid #222; }
.footer .top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.footer .brand { color: var(--paper); margin-bottom: 14px; }
.footer .cols-f { display: flex; gap: 56px; flex-wrap: wrap; }
.footer h4 { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--grey-400); margin-bottom: 14px; font-weight: 400; }
.footer a { display: block; color: #b8b8b8; font-size: 0.92rem; margin-bottom: 9px; transition: color .15s; }
.footer a:hover { color: var(--paper); }
.footer .legal { margin-top: 48px; padding-top: 24px; border-top: 1px solid #222; font-size: 0.8rem; color: var(--grey-400); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

/* small print / disclaimer */
.disclaimer { font-size: 0.82rem; color: var(--grey-400); max-width: 70ch; line-height: 1.6; }

/* logo shown in white on dark surfaces (artwork is dark on transparent) */
.logo-invert { filter: invert(1); }
.nav-emblem { height: 30px; width: auto; }
.hero-emblem { height: 160px; width: auto; margin: 0 auto 26px; }
@media (max-width: 640px) { .hero-emblem { height: 120px; } }

/* Orbitron on main headings (h1/h2); subheadings (h3) keep Space Grotesk */
h1, h2 { font-family: var(--font-brand); letter-spacing: 0; line-height: 1.1; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.2rem); }

/* light / dark section variants */
.hero.light { background: var(--paper); color: var(--ink); }
.hero.light .lead { color: var(--grey-600); }
.hero.center { text-align: center; }
.hero.center h1 { max-width: 24ch; margin-left: auto; margin-right: auto; text-wrap: balance; }
.hero.center .lead { margin-left: auto; margin-right: auto; text-wrap: pretty; }
.hero.center .btn-row { justify-content: center; }
.section-dark { background: var(--ink); color: var(--paper); }
.section-dark .lead { color: #c9c9c9; }
.section-dark .eyebrow { color: var(--grey-400); }

/* about the host */
.host { display: grid; grid-template-columns: 230px 1fr; gap: 36px; align-items: start; margin-top: 28px; }
@media (max-width: 640px) { .host { grid-template-columns: 1fr; gap: 22px; } }
.host-photo { width: 100%; max-width: 230px; aspect-ratio: 4 / 5; border-radius: 12px; overflow: hidden; background: var(--grey-100); border: 1px solid var(--grey-200); position: relative; }
.host-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.host-photo.noimg::after { content: "Add your photo"; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--grey-400); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }

.center { text-align: center; }
.mt-s { margin-top: 14px; }
.mt-m { margin-top: 28px; }
hr.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }