/* ==========================================================================
   David Taylor — Official Author & Theologian Website (davidtaylorjr.com)
   Understated Literary & Theological Design System
   ========================================================================== */

:root {
  /* Palette guided by approved book cover: Warm Parchment, Oxblood Crimson, Antique Brass, Sepia Ink */
  --bg-page: #faf6ee;
  --bg-surface: #f2ebe0;
  --bg-paper: #fffdf9;
  --bg-ink: #1e1815;
  --bg-ink-soft: #2a211d;

  --text-primary: #221c18;
  --text-secondary: #4e4239;
  --text-muted: #68594e;
  --text-on-ink: #f7f1e6;
  --text-on-ink-muted: #d5c7b4;

  --accent-crimson: #64181b;
  --accent-crimson-hover: #491012;
  --accent-crimson-subtle: #f4e8e8;

  --accent-brass: #8a642f;
  --accent-brass-light: #c5a472;
  --accent-olive: #445036;

  --border-subtle: #e2d7c5;
  --border-strong: #cbb99e;

  --shadow-soft: 0 0.5rem 2rem -0.5rem rgba(34, 28, 24, 0.08),
                 0 0.125rem 0.5rem -0.125rem rgba(34, 28, 24, 0.05);
  --shadow-book: 0 1.25rem 2.75rem -0.75rem rgba(34, 28, 24, 0.28),
                 0 0.25rem 0.75rem -0.125rem rgba(34, 28, 24, 0.14);

  /* Typography */
  --font-serif: "Iowan Old Style", "Palatino Linotype", "URW Palladio L", P052, "Book Antiqua", Palatino, Georgia, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --container-max: 72rem;
  --reading-max: 44rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
}

/* Cross-Document View Transitions (Progressive Enhancement) */
@media (prefers-reduced-motion: no-preference) {
  @view-transition {
    navigation: auto;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 0.24s;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
  }
}

/* Reset & Base (Note: Root font-size intentionally left unset per respect-os-text-scale) */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--text-primary);
}

@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;
  }
}

body {
  margin: 0;
  font-family: var(--font-serif);
  line-height: 1.7;
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Improve Text Layout & Legibility */
h1,
h2,
h3,
h4,
.eyebrow,
.balanced-heading {
  text-wrap: balance;
}

p,
blockquote,
li {
  text-wrap: pretty;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-top: 0;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.15rem, 1.6rem + 2.2vw, 3.35rem);
  margin-bottom: 1.15rem;
}

h2 {
  font-size: clamp(1.65rem, 1.35rem + 1.25vw, 2.35rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.25rem, 1.12rem + 0.5vw, 1.55rem);
  margin-bottom: 0.65rem;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
  font-size: clamp(1.0625rem, 1rem + 0.2vw, 1.1875rem);
}

a {
  color: var(--accent-crimson);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: var(--accent-crimson-hover);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-crimson);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* Skip Link & Screen Reader Utilities for Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -10rem;
  left: 1rem;
  z-index: 1000;
  background: var(--bg-ink);
  color: var(--text-on-ink);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
}

.skip-link:focus {
  top: 1rem;
  color: var(--text-on-ink);
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.container-narrow {
  width: 100%;
  max-width: var(--reading-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* Header & Accessible Navigation */
.site-header {
  background-color: rgba(250, 246, 238, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.75rem;
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text-primary);
}

.brand:hover {
  color: var(--text-primary);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.15;
}

.brand-tagline {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  gap: 0.5rem;
}

.nav-toggle-icon {
  width: 1.125rem;
  height: 1.125rem;
  display: inline-block;
}

.primary-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem 1.5rem;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.35rem 0.15rem;
  border-bottom: 2px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link:hover {
  color: var(--accent-crimson);
}

.nav-link[aria-current="page"] {
  color: var(--accent-crimson);
  border-bottom-color: var(--accent-crimson);
  font-weight: 600;
}

.nav-external-indicator {
  font-size: 0.75em;
  opacity: 0.75;
}

.nav-cta {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--bg-paper);
  background-color: var(--accent-crimson);
  border: 1px solid var(--accent-crimson);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-cta:hover {
  background-color: var(--accent-crimson-hover);
  border-color: var(--accent-crimson-hover);
  color: var(--bg-paper);
}

/* Responsive Navigation Drawer (em-based breakpoint per respect-os-text-scale) */
@media (max-width: 54em) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-paper);
    border-bottom: 1px solid var(--border-strong);
    box-shadow: var(--shadow-soft);
    padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
  }

  .primary-nav.is-open {
    display: block;
  }

  .primary-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 0.35rem 0;
  }

  .nav-cta {
    margin-top: 0.25rem;
    width: 100%;
    justify-content: center;
    padding: 0.65rem 1rem;
  }
}

/* Buttons & Call-to-Actions */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1rem;
  margin-top: 1.75rem;
}

.btn {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.8rem 1.45rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.3;
}

.btn-primary {
  background-color: var(--accent-crimson);
  color: var(--bg-paper);
  border-color: var(--accent-crimson);
}

.btn-primary:hover {
  background-color: var(--accent-crimson-hover);
  border-color: var(--accent-crimson-hover);
  color: var(--bg-paper);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--accent-brass);
  color: var(--text-primary);
}

.btn-light {
  background-color: var(--bg-paper);
  color: var(--text-primary);
  border-color: var(--bg-paper);
}

.btn-light:hover {
  background-color: var(--bg-surface);
  color: var(--accent-crimson);
}

.btn-outline-light {
  background-color: transparent;
  color: var(--text-on-ink);
  border-color: rgba(247, 241, 230, 0.4);
}

.btn-outline-light:hover {
  background-color: rgba(247, 241, 230, 0.1);
  border-color: var(--text-on-ink);
  color: var(--text-on-ink);
}

/* Literary Ornaments & Eyebrows */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-crimson);
  margin-bottom: 0.75rem;
  display: inline-block;
}

.eyebrow-brass {
  color: var(--accent-brass);
}

.literary-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-block: 2.5rem;
  color: var(--accent-brass);
}

.literary-divider::before,
.literary-divider::after {
  content: "";
  height: 1px;
  width: clamp(3rem, 12vw, 8rem);
  background-color: var(--border-strong);
}

/* Sections */
.section {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.section-surface {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-ink {
  background-color: var(--bg-ink);
  color: var(--text-on-ink);
}

.section-ink h2,
.section-ink h3 {
  color: var(--text-on-ink);
}

.section-ink p {
  color: var(--text-on-ink-muted);
}

/* Hero Section (Home & Books) */
.hero {
  padding-block: clamp(3.25rem, 7vw, 5.75rem);
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 80% 20%, rgba(197, 164, 114, 0.12), transparent 55%),
              var(--bg-page);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
}

@media (max-width: 52em) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.hero-lead {
  font-size: clamp(1.15rem, 1.05rem + 0.35vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.hero-book-showcase {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.book-cover-frame {
  position: relative;
  max-width: 21rem;
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-book);
  border: 1px solid rgba(138, 100, 47, 0.3);
  background-color: var(--bg-paper);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .book-cover-frame:hover {
    transform: translateY(-3px);
  }
}

.edition-pill {
  margin-top: 1rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background-color: var(--bg-paper);
  border: 1px solid var(--border-strong);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.edition-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--accent-olive);
  display: inline-block;
}

/* Cards & Grids */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr));
  gap: 1.5rem;
  margin-top: 2.25rem;
}

.theme-card {
  background-color: var(--bg-paper);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--accent-crimson);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
  min-height: 12rem;
  display: flex;
  flex-direction: column;
}

.theme-scripture {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-brass);
  margin-bottom: 0.45rem;
}

.theme-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.65rem;
}

.theme-card p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Quotations / Excerpts */
.quotes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 1.75rem;
  margin-top: 2rem;
}

.literary-quote {
  margin: 0;
  background-color: var(--bg-paper);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-brass);
  padding: 1.75rem 2rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.literary-quote blockquote {
  margin: 0 0 1.25rem 0;
  font-size: 1.08rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.65;
}

.literary-quote figcaption {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* Author Split Layout */
.author-preview-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 50em) {
  .author-preview-grid {
    grid-template-columns: 1fr;
  }
}

.portrait-frame {
  max-width: 24rem;
  width: 100%;
  margin-inline: auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-soft);
  background-color: var(--bg-surface);
}

/* Book Details Metadata Bar */
.book-meta-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-block: 1.75rem;
}

.book-meta-item {
  display: flex;
  flex-direction: column;
}

.book-meta-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.book-meta-value {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.15rem;
}

/* Table of Contents List */
.toc-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0 0;
  border-top: 1px solid var(--border-subtle);
}

.toc-item {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toc-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.toc-chapter-num {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-crimson);
  margin-right: 0.5rem;
}

.toc-chapter-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.toc-subtopics {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0;
}

/* Future Books / Forthcoming Box */
.forthcoming-card {
  background-color: var(--bg-paper);
  border: 1px dashed var(--accent-brass);
  border-radius: var(--radius-md);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  margin-top: 2rem;
}

/* Placeholder Banner for Unsupplied Assets (Music Links) */
.placeholder-box {
  background-color: #fdf8ed;
  border: 2px dashed var(--accent-brass);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  margin-top: 1.75rem;
}

.placeholder-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--accent-brass);
  color: var(--bg-paper);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.85rem;
}

.placeholder-slots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.placeholder-slot {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* Page Header Banner (About / Music / Books) */
.page-header {
  padding-block: clamp(2.75rem, 5.5vw, 4.25rem);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.page-header p {
  font-size: clamp(1.1rem, 1rem + 0.3vw, 1.28rem);
  color: var(--text-secondary);
  max-width: 44rem;
  margin-bottom: 0;
}

/* Reflection Questions Ordered List */
.reflection-list {
  padding-left: 1.25rem;
  margin-top: 1.25rem;
}

.reflection-list li {
  margin-bottom: 0.85rem;
  font-size: 1.0625rem;
  color: var(--text-primary);
  padding-left: 0.35rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-ink);
  color: var(--text-on-ink-muted);
  padding-block: clamp(3rem, 6vw, 4.5rem);
  border-top: 3px solid var(--accent-brass);
  font-family: var(--font-sans);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(247, 241, 230, 0.14);
}

@media (max-width: 48em) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-on-ink);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 0.5rem;
}

.footer-bio {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-on-ink-muted);
  max-width: 30rem;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-on-ink);
  margin-bottom: 0.85rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-links a {
  color: var(--text-on-ink-muted);
  text-decoration: none;
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: var(--text-on-ink);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.84rem;
  color: var(--text-on-ink-muted);
}

.footer-bottom p {
  font-family: var(--font-sans);
  font-size: 0.84rem;
  margin: 0;
}