/* knguides.com brand system */
@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Inter:wght@300;400;500;600&display=swap");

:root {
  --navy-top: #0a1628;
  --navy-bot: #0f1d3a;
  --navy-panel: #142544;
  --gold: #c9a96e;
  --gold-soft: #d4b87a;
  --cream: #f5f1e8;
  --ink: #2a3142;
  --muted: #8a92a3;
  --display: "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", system-ui, sans-serif;
  --maxw: 1080px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--display); font-weight: 500; color: var(--navy-top); line-height: 1.1; margin: 0 0 0.4em; }
h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1.1em; }
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 1.2rem;
}

/* ---------- Hero with parallax ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--cream);
}
.hero__bg {
  position: absolute;
  inset: -12% 0 0 0;
  height: 124%;
  background: linear-gradient(160deg, var(--navy-top), var(--navy-bot));
  will-change: transform;
  z-index: 0;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 78% 8%, rgba(201, 169, 110, 0.16), transparent 60%),
    radial-gradient(900px 500px at 12% 92%, rgba(201, 169, 110, 0.08), transparent 60%);
}
.hero .container { position: relative; z-index: 1; }
.hero__rule { width: 64px; height: 2px; background: var(--gold); margin: 0 0 2rem; }
.hero h1 { color: var(--cream); }
.hero__lede {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  color: var(--gold-soft);
  max-width: 36ch;
  margin: 0.6rem 0 0;
}
.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(245, 241, 232, 0.6);
  animation: float 2.4s var(--ease) infinite;
}
@keyframes float { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,6px); } }

/* ---------- Sections ---------- */
.section { padding: clamp(4rem, 10vw, 8rem) 0; }
.section--tight { padding: clamp(3rem, 6vw, 5rem) 0; }
.lede { font-size: 1.2rem; max-width: 58ch; color: var(--ink); }

/* ---------- Guide card ---------- */
.guide-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid rgba(10, 22, 40, 0.12);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 24px 60px -28px rgba(10, 22, 40, 0.4);
}
@media (min-width: 760px) { .guide-card { grid-template-columns: 0.85fr 1.15fr; } }
.guide-card__cover {
  background: linear-gradient(160deg, var(--navy-top), var(--navy-bot));
  color: var(--cream);
  padding: clamp(2rem, 5vw, 3.4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 280px;
}
.guide-card__cover .mark { font-size: 0.7rem; letter-spacing: 0.3em; color: var(--gold); text-transform: uppercase; margin-bottom: auto; }
.guide-card__cover h3 { color: var(--cream); font-size: clamp(2rem, 5vw, 3rem); margin: 1.2rem 0 0.4rem; }
.guide-card__cover .sub { font-family: var(--display); font-style: italic; color: var(--gold-soft); }
.guide-card__body { padding: clamp(2rem, 5vw, 3.4rem); }
.guide-card__body p { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  padding: 0.85em 1.6em;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.18s, color 0.18s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--gold); color: var(--navy-top); }
.btn--primary:hover { background: var(--gold-soft); }
.btn--ghost { background: transparent; color: var(--navy-top); border-color: rgba(10, 22, 40, 0.25); }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.4rem; }

/* ---------- Forms ---------- */
.signup { background: var(--navy-top); color: var(--cream); }
.signup h2 { color: var(--cream); }
.signup .lede { color: rgba(245, 241, 232, 0.78); }
.form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
  max-width: 540px;
}
.form input {
  flex: 1 1 220px;
  font-family: var(--sans);
  font-size: 1rem;
  padding: 0.85em 1em;
  border-radius: 4px;
  border: 1px solid rgba(245, 241, 232, 0.25);
  background: rgba(245, 241, 232, 0.06);
  color: var(--cream);
}
.form input::placeholder { color: rgba(245, 241, 232, 0.5); }
.form input:focus { outline: none; border-color: var(--gold); }
.form-note { font-size: 0.82rem; color: rgba(245, 241, 232, 0.55); margin-top: 0.9rem; }
.form-error { color: #f0a890; font-size: 0.9rem; margin-top: 0.8rem; min-height: 1.2em; }
.form-ok { color: var(--gold-soft); font-weight: 600; margin-top: 1.4rem; }

/* companions page variant: form on light bg */
.panel {
  background: #fff;
  border: 1px solid rgba(10, 22, 40, 0.12);
  border-radius: 6px;
  padding: clamp(1.8rem, 5vw, 3rem);
  box-shadow: 0 24px 60px -30px rgba(10, 22, 40, 0.35);
  max-width: 560px;
}
.panel .form input { flex: 0 0 auto; border-color: rgba(10, 22, 40, 0.2); background: #fbf8f1; color: var(--ink); }
.panel .form input::placeholder { color: var(--muted); }
.panel .form-error { color: #b54a2c; }
.panel .form-ok { color: var(--navy-top); }
.panel ul { padding-left: 1.1rem; color: var(--ink); }
.panel li { margin-bottom: 0.3rem; }

/* ---------- Footer ---------- */
.footer { background: var(--navy-bot); color: rgba(245, 241, 232, 0.7); padding: 3rem 0; font-size: 0.9rem; }
.footer a { color: var(--gold-soft); }
.footer .brand { font-family: var(--display); font-size: 1.4rem; color: var(--cream); margin-bottom: 0.4rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

.legal { font-size: 0.82rem; color: var(--muted); margin-top: 1.4rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .scroll-cue { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}