/* ==========================================================================
   Robert Joseph Author Site - Design System
   Navy #383E59 / Tan #9E8879 / Cream #F4F0E7 pulled directly from the
   existing logo, book covers, and business card. Fraunces for display,
   Source Serif 4 for body, Inter for UI - literary feel, modern execution.
   ========================================================================== */

:root {
  /* Brand colors - sampled from logo.png and book cover files */
  --navy: #383e59;
  --navy-deep: #262b3f;
  --tan: #9e8879;
  --tan-light: #c9bcae;
  --cream: #f4f0e7;
  --cream-warm: #ece3d3;
  --ink: #2b2b28;
  --crimson: #8b1e2b;
  --crimson-deep: #6e1620;
  --rust: #b85c38;
  --white: #ffffff;

  /* Type */
  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Source Serif 4", "Georgia", serif;
  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Rhythm */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --radius: 4px;
  --max-width: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy);
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  font-weight: 600;
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 var(--space-2); }

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rust);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

section { padding: var(--space-5) 0; }
.section-tight { padding: var(--space-4) 0; }
.bg-warm { background: var(--cream-warm); }
.bg-navy { background: var(--navy); color: var(--cream); }
.bg-navy h1, .bg-navy h2, .bg-navy h3 { color: var(--white); }

/* Tree-ring signature motif - echoes the seal logo & the tree on both
   covers. Used sparingly: hero backdrop + section dividers only. */
.ring-mark {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--tan);
  opacity: 0.35;
  pointer-events: none;
}
.divider-rings {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin: var(--space-4) 0;
}
.divider-rings span {
  width: 6px; height: 6px; border-radius: 50%;
  border: 1px solid var(--tan);
}
.divider-rings::before, .divider-rings::after {
  content: "";
  height: 1px;
  width: 64px;
  background: var(--tan-light);
}

/* ---------------------------------- Header ---------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 240, 231, 0.94);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--tan-light);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}

.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.brand img { height: 80px; width: auto; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--navy);
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  line-height: 1.1;
}
.brand-word small {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--tan);
  font-weight: 600;
}

.main-nav { display: flex; align-items: center; gap: var(--space-3); }
.main-nav a {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--navy);
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--rust);
  transition: right 0.25s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }

.main-nav a.social-icon-link::after { display: none; }
.main-nav a.social-icon-link { display: inline-flex; align-items: center; color: var(--navy); }
.main-nav a.social-icon-link:hover { color: var(--rust); }
.main-nav a.active { color: var(--rust); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 5px 0;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3) var(--space-3);
    border-bottom: 1px solid var(--tan-light);
    display: none;
  }
  .main-nav.open { display: flex; }
}

/* ---------------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.9rem 1.7rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary { background: var(--rust); color: var(--white); }
.btn-primary:hover { background: #a34e2f; box-shadow: 0 8px 20px rgba(184,92,56,0.32); }

.btn-crimson { background: var(--crimson); color: var(--white); }
.btn-crimson:hover { background: var(--crimson-deep); box-shadow: 0 8px 20px rgba(139,30,43,0.32); }

.btn-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }

.btn-outline-light { background: transparent; color: var(--cream); border-color: var(--tan); }
.btn-outline-light:hover { background: var(--tan); color: var(--navy-deep); }

.btn-ghost { background: transparent; color: var(--navy); padding-left: 0; padding-right: 0; text-transform: none; font-weight: 600; letter-spacing: 0; }
.btn-ghost::after { content: "→"; margin-left: 0.35rem; transition: margin-left 0.15s ease; }
.btn-ghost:hover::after { margin-left: 0.6rem; }

.btn-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn-small { padding: 0.6rem 1.1rem; font-size: 0.75rem; }

/* ---------------------------------- Hero ---------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-5) 0;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--space-4);
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-art { position: relative; text-align: center; }
.hero-art img { max-width: min(560px, 100%); margin: 0 auto; }
.hero-copy .eyebrow { margin-bottom: var(--space-1); }
.hero-copy p.lede { font-size: 1.15rem; color: var(--navy); font-weight: 500; }
.hero-copy p.body-text { max-width: 46ch; }

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-copy p.body-text { margin-left: auto; margin-right: auto; }
  .hero-copy .btn-group { justify-content: center; }
}

/* ---------------------------------- Cards ---------------------------------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }

@media (max-width: 780px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.book-card {
  background: var(--white);
  border: 1px solid var(--tan-light);
  border-radius: var(--radius);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.book-card img { max-width: 220px; margin: 0 auto var(--space-1); }
.book-card .btn-group { margin-top: auto; }

.testimonial-card {
  background: var(--white);
  border-left: 3px solid var(--rust);
  padding: var(--space-3);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.testimonial-card p { font-style: italic; color: var(--navy); margin-bottom: 0.5rem; }
.testimonial-card cite { font-family: var(--font-ui); font-style: normal; font-size: 0.82rem; color: var(--tan); font-weight: 600; }

.book-spread-image { display: block; height: 480px; width: auto; max-width: 100%; margin: 0 auto var(--space-3); border-radius: var(--radius); }

.category-card {
  background: var(--white);
  border: 1px solid var(--tan-light);
  border-radius: var(--radius);
  padding: var(--space-3);
}

/* ---------------------------------- Author / About layout ---------------------------------- */

.author-split {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-4);
  align-items: start;
}
.author-split img {
  border-radius: var(--radius);
  border: 1px solid var(--tan-light);
}
@media (max-width: 780px) {
  .author-split { grid-template-columns: 1fr; }
  .author-split img { max-width: 260px; margin: 0 auto; }
}

.book-hero-split { display: grid; grid-template-columns: 360px 1fr; gap: var(--space-4); align-items: center; }
.book-hero-split img { max-width: min(360px, 100%); margin: 0 auto; }
@media (max-width: 780px) {
  .book-hero-split { grid-template-columns: 1fr; text-align: center; }
  .book-hero-split .btn-group { justify-content: center; }
}

/* ---------------------------------- Forms ---------------------------------- */

.form-panel {
  background: var(--white);
  border: 1px solid var(--tan-light);
  border-radius: var(--radius);
  padding: var(--space-4);
  max-width: 560px;
}
label { display: block; font-family: var(--font-ui); font-size: 0.82rem; font-weight: 600; color: var(--navy); margin-bottom: 0.3rem; }
input, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--tan-light);
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--ink);
  margin-bottom: var(--space-2);
}
input:focus, textarea:focus {
  outline: 2px solid var(--rust);
  outline-offset: 1px;
}
.form-note { font-family: var(--font-ui); font-size: 0.78rem; color: var(--tan); }

/* ---------------------------------- Footer ---------------------------------- */

.site-footer {
  background: var(--navy);
  color: var(--cream);
  padding: var(--space-5) 0 var(--space-3);
}
.footer-cta {
  text-align: center;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(244,240,231,0.15);
  margin-bottom: var(--space-3);
}
.footer-cta h2 { color: var(--white); }
.footer-cta p { max-width: 52ch; margin-left: auto; margin-right: auto; color: var(--tan-light); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: var(--space-3);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}
.footer-grid h4 { color: var(--white); font-family: var(--font-ui); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: var(--space-2); }
.footer-grid a { color: var(--tan-light); text-decoration: none; display: block; margin-bottom: 0.5rem; }
.footer-grid a:hover { color: var(--white); }

.footer-social { display: flex; gap: 0.9rem; margin-top: var(--space-2); }
.footer-social a { color: var(--tan-light); display: inline-flex; }
.footer-social a:hover { color: var(--white); }
.footer-bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-2);
  border-top: 1px solid rgba(244,240,231,0.15);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--tan-light);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------- Scroll reveal (subtle, respects reduced motion) ---------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------------------------------- Blog post ---------------------------------- */

.post-body { max-width: 820px; margin: 0 auto; }
.post-body p { margin-bottom: 1.4em; }
.post-byline { font-family: var(--font-ui); font-size: 0.85rem; color: var(--tan); margin-bottom: var(--space-3); }
.post-nav-links { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; max-width: 820px; margin: var(--space-4) auto 0; padding-top: var(--space-3); border-top: 1px solid var(--tan-light); font-family: var(--font-ui); }
.post-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-3); }
.post-list-item { display: block; padding: var(--space-3); background: var(--white); border: 1px solid var(--tan-light); border-radius: var(--radius); text-decoration: none; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.post-list-item:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(56,62,89,0.1); }
.post-list-item h3 { margin-bottom: 0.3rem; }
.post-list-item p { color: var(--ink); margin-bottom: 0; }

/* ---------------------------------- Utility ---------------------------------- */

.center { text-align: center; }
.mt-0 { margin-top: 0; }
.muted { color: var(--tan); }
.max-prose { max-width: 62ch; }
.mx-auto { margin-left: auto; margin-right: auto; }
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy);
  color: var(--white);
  padding: 0.6rem 1rem;
  z-index: 200;
}
.skip-link:focus { left: 1rem; top: 1rem; }