/* ==========================================================================
   Karl M. Stecher - Christian Author & Writer
   Core Stylesheet
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
  --color-bg: #FAF7F2;
  --color-surface: #FFFFFF;
  --color-surface-tint: #F4EFE6;
  --color-surface-alt: #EFE8DC;
  
  --color-text-main: #1A2229;
  --color-text-muted: #556270;
  --color-text-light: #7B8896;
  
  --color-gold: #9E773A;
  --color-gold-light: #C59A45;
  --color-gold-hover: #7E5B26;
  --color-gold-bg: rgba(158, 119, 58, 0.08);
  
  --color-border: #E5DCD0;
  --color-border-light: #EFE7DC;
  --color-border-dark: #C9BDB0;
  
  --font-serif: 'Cormorant Garamond', Garamond, 'Times New Roman', Georgia, serif;
  --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  --shadow-sm: 0 2px 8px rgba(26, 34, 41, 0.04);
  --shadow-md: 0 6px 24px rgba(26, 34, 41, 0.07);
  --shadow-lg: 0 16px 40px rgba(26, 34, 41, 0.12);
  --shadow-book: 8px 16px 36px rgba(20, 28, 36, 0.22);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --max-width: 1140px;
  --header-height: 84px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* --- Base Reset & Box Sizing --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- Skip Link for Accessibility --- */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--color-text-main);
  color: #FFFFFF;
  padding: 10px 18px;
  z-index: 1000;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top var(--transition-fast);
  text-decoration: none;
}

.skip-link:focus {
  top: 20px;
  outline: 2px solid var(--color-gold-light);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text-main);
  margin-bottom: 0.85rem;
}

h1 {
  font-size: 2.85rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 2.2rem;
  letter-spacing: -0.005em;
}

h3 {
  font-size: 1.65rem;
}

h4 {
  font-size: 1.3rem;
}

p {
  margin-bottom: 1.35rem;
}

p.lead {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--color-text-main);
  font-weight: 400;
}

.kicker {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.scripture-quote {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text-main);
  border-left: 3px solid var(--color-gold);
  padding: 0.75rem 0 0.75rem 1.75rem;
  margin: 2rem 0;
  background: var(--color-gold-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.scripture-quote cite {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-gold-hover);
  margin-top: 0.5rem;
}

/* --- Layout & Container --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 820px;
}

.section {
  padding: 5rem 0;
}

.section-sm {
  padding: 3rem 0;
}

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

.text-center {
  text-align: center;
}

/* --- Flourish Divider --- */
.flourish-wrap {
  text-align: center;
  margin: 1.75rem auto 2.25rem;
  line-height: 0;
}

.flourish-wrap img {
  width: 180px;
  height: 22px;
  opacity: 0.9;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--color-text-main);
  color: #FFFFFF;
  border-color: var(--color-text-main);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-gold {
  background-color: var(--color-gold);
  color: #FFFFFF;
  border-color: var(--color-gold);
}

.btn-gold:hover, .btn-gold:focus {
  background-color: var(--color-gold-hover);
  border-color: var(--color-gold-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-main);
  border-color: var(--color-border-dark);
}

.btn-outline:hover, .btn-outline:focus {
  background-color: var(--color-text-main);
  border-color: var(--color-text-main);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-amazon {
  background: linear-gradient(135deg, #1A2229 0%, #263442 100%);
  color: #FFFFFF;
  border: 1px solid #3B4B5B;
  box-shadow: var(--shadow-sm);
}

.btn-amazon:hover, .btn-amazon:focus {
  background: linear-gradient(135deg, #263442 0%, #1A2229 100%);
  border-color: var(--color-gold);
  color: #F8E7B6;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-amazon svg {
  fill: currentColor;
  width: 18px;
  height: 18px;
}

/* --- Header & Navigation --- */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 900;
  transition: box-shadow var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(26, 34, 41, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.site-brand {
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-main);
  line-height: 1.1;
  text-transform: uppercase;
}

.brand-descriptor {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-top: 2px;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.85rem;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.4rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-gold);
}

.nav-link.active {
  color: var(--color-text-main);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-gold);
  border-radius: 1px;
}

/* Header Right & Language Selector */
.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.lang-link {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.lang-link:hover, .lang-link:focus {
  color: var(--color-gold);
}

.lang-link.active {
  color: var(--color-gold-hover);
  font-weight: 700;
  cursor: default;
  pointer-events: none;
}

.lang-sep {
  color: var(--color-border-dark);
  font-size: 0.75rem;
  user-select: none;
  opacity: 0.7;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-main);
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.mobile-nav-toggle:focus {
  outline: 2px solid var(--color-gold);
}

.mobile-nav-toggle .hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}

.mobile-nav-toggle .hamburger-icon span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-main);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-nav-toggle.open .hamburger-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.mobile-nav-toggle.open .hamburger-icon span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.open .hamburger-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
  padding: 5.5rem 0 4.5rem;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-tint) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.25rem;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-content h1 span.highlight {
  color: var(--color-gold);
  display: block;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 2rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.book-mockup-wrapper {
  max-width: 360px;
  width: 100%;
  filter: drop-shadow(0 20px 30px rgba(18, 25, 33, 0.2));
  transition: transform var(--transition-normal);
}

.book-mockup-wrapper:hover {
  transform: translateY(-6px);
}

.book-mockup-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

/* --- Feature Cards & Book Cards --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gold-light);
}

.feature-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-gold-bg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-gold);
}

.feature-card h3 {
  font-size: 1.6rem;
  margin-bottom: 0.85rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
  flex-grow: 1;
}

/* --- Book Showcase Detailed Layout --- */
.book-detail-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 4rem;
  align-items: start;
}

.book-cover-col {
  position: sticky;
  top: 105px;
}

.book-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--color-gold-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold-hover);
  margin-bottom: 1.25rem;
}

.book-attributes {
  margin: 2.25rem 0;
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.attribute-item {
  display: flex;
  justify-content: space-between;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.95rem;
}

.attribute-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.attribute-label {
  font-weight: 600;
  color: var(--color-text-muted);
}

.attribute-value {
  color: var(--color-text-main);
}

/* --- Author Bio Grid --- */
.author-profile-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 3.5rem;
  align-items: start;
}

.author-portrait-wrap {
  position: sticky;
  top: 105px;
  filter: drop-shadow(0 12px 24px rgba(26, 34, 41, 0.08));
}

.author-portrait-wrap img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.bio-content p {
  color: var(--color-text-main);
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* --- Staging Notice Box (for upcoming content) --- */
.staging-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  margin: 2.5rem 0;
}

.staging-box h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.staging-box p {
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* --- Forms & Inputs --- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: #B94A48;
}

.form-control {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text-main);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(158, 119, 58, 0.15);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
}

.form-alert {
  display: none;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-alert.success {
  display: block;
  background-color: #EBF5EE;
  border: 1px solid #BCE2C9;
  color: #1F5A32;
}

.form-alert.error {
  display: block;
  background-color: #FDF2F2;
  border: 1px solid #F5C6CB;
  color: #721C24;
}

/* Newsletter Signup Inline */
.newsletter-card {
  background: linear-gradient(135deg, #1A2229 0%, #26333F 100%);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin: 3rem 0;
}

.newsletter-card h2, .newsletter-card h3 {
  color: #FFFFFF;
}

.newsletter-card p {
  color: #CBD5E1;
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: 1.0625rem;
}

.newsletter-form {
  display: flex;
  max-width: 540px;
  margin: 0 auto;
  gap: 0.75rem;
}

.newsletter-form input[type="email"] {
  flex-grow: 1;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 1rem;
}

.newsletter-form input[type="email"]::placeholder {
  color: #94A3B8;
}

.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-gold-light);
  background: rgba(255, 255, 255, 0.18);
}

.newsletter-form .btn {
  white-space: nowrap;
}

/* --- Footer --- */
.site-footer {
  background-color: #151D24;
  color: #D3DDE6;
  border-top: 3px solid var(--color-gold);
  padding: 4.5rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}

.footer-brand .brand-name {
  color: #FFFFFF;
  font-size: 1.6rem;
}

.footer-brand .brand-descriptor {
  color: var(--color-gold-light);
}

.footer-brand p {
  color: #9EAEC0;
  font-size: 0.95rem;
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 380px;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #9EAEC0;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover, .footer-links a:focus {
  color: var(--color-gold-light);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  color: #8292A2;
}

.footer-bottom a {
  color: #9EAEC0;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-gold-light);
}