/* ==========================================================================
   Memories of a Marine Infantry — Design System
   Patriotic / Military tone: navy, oxblood red, brass/gold, aged cream
   ========================================================================== */

:root {
  --color-navy: #0e2340;
  --color-navy-dark: #081525;
  --color-red: #8c1c1c;
  --color-red-dark: #6b1414;
  --color-gold: #b8935a;
  --color-gold-light: #d9bd8c;
  --color-cream: #f4efe4;
  --color-cream-dark: #e8dfc9;
  --color-charcoal: #201d1a;
  --color-gray-600: #55524c;
  --color-gray-400: #8a8477;
  --color-white: #ffffff;

  --gradient-navy: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  --gradient-gold: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --shadow-sm: 0 2px 10px rgba(14, 35, 64, 0.10);
  --shadow-md: 0 10px 28px rgba(14, 35, 64, 0.16);
  --shadow-lg: 0 20px 48px rgba(14, 35, 64, 0.22);

  --container-width: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-charcoal);
  background: var(--color-cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-navy);
}

h1 { font-size: clamp(2.25rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1vw + 1rem, 1.4rem); }

p { color: var(--color-gray-600); }

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

section { padding: clamp(3rem, 6vw, 6rem) 0; }

.text-gold { color: var(--color-gold); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 0.6rem;
}

.eyebrow::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 42px; height: 2px;
  background: var(--color-gold);
}

.section-head {
  max-width: 640px;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-head .eyebrow::after { left: 50%; transform: translateX(-50%); }
.section-head p { margin-top: 0.75rem; font-size: 1.05rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.9rem 1.9rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-red);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { background: var(--color-red-dark); transform: translateY(-2px); }

.btn-gold {
  background: var(--gradient-gold);
  color: var(--color-navy-dark);
  box-shadow: var(--shadow-md);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn-outline {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}
.btn-outline:hover { background: var(--color-navy); color: var(--color-white); }

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: var(--color-white); }

.btn-nav { padding: 0.6rem 1.4rem; font-size: 0.78rem; }
.btn-block { width: 100%; }

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 239, 228, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled {
  border-color: var(--color-cream-dark);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-navy);
  letter-spacing: 0.01em;
}
.logo span { color: var(--color-red); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-links a {
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--color-gray-600);
  transition: color 0.2s ease;
}

.nav-links a:hover, .nav-links a.active { color: var(--color-red); }

.nav-links a.btn-primary,
.nav-links a.btn-primary:hover { color: var(--color-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Hero ---- */
.hero {
  background: var(--gradient-navy);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(184,147,90,0.05) 0 2px, transparent 2px 40px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero .eyebrow { color: var(--color-gold-light); }
.hero .eyebrow::after { background: var(--color-gold); }
.hero h1 { color: var(--color-white); }

.hero p.lead {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  margin: 1.25rem 0 2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-byline {
  margin-top: 2rem;
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--color-gold-light);
  font-size: 1.05rem;
}

.hero-cover {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-cover-placeholder {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 2 / 3;
  background: linear-gradient(160deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
  border: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--color-navy);
}

.book-cover-placeholder .cover-label {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-red);
  margin-bottom: 0.75rem;
  font-weight: 700;
  font-family: var(--font-body);
}

.book-cover-img {
  width: 100%;
  max-width: 320px;
  border-radius: var(--radius-sm);
  border: 6px solid var(--color-gold);
  box-shadow:
    0 0 0 2px var(--color-navy-dark),
    var(--shadow-lg);
}

.book-cover-placeholder h2 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.book-cover-placeholder span.author-line {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-gray-600);
  font-style: italic;
}

/* ---- Cards / Grids ---- */
.grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-gold);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card h3 { margin-bottom: 0.6rem; }
.card p { font-size: 0.95rem; }

/* ---- Section variants ---- */
.section-alt { background: var(--color-white); }

.section-navy {
  background: var(--gradient-navy);
  color: var(--color-white);
}
.section-navy h2, .section-navy h3 { color: var(--color-white); }
.section-navy p { color: rgba(255,255,255,0.82); }
.section-navy .eyebrow { color: var(--color-gold-light); }

/* ---- CTA banner ---- */
.cta-banner {
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
  background: var(--gradient-navy);
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(184,147,90,0.35);
}
.cta-banner h2 { color: var(--color-white); margin-bottom: 1rem; }
.cta-banner p { color: rgba(255,255,255,0.85); margin-bottom: 2rem; }

/* ---- Page header (inner pages) ---- */
.page-header {
  padding: clamp(3rem, 6vw, 5rem) 0 3rem;
  text-align: center;
  background: var(--gradient-navy);
  color: var(--color-white);
}
.page-header h1 { color: var(--color-white); }
.page-header p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 1rem auto 0; }
.page-header .eyebrow { color: var(--color-gold-light); }
.page-header .eyebrow::after { left: 50%; transform: translateX(-50%); }

/* ---- Excerpt / quote block ---- */
.excerpt-block {
  background: var(--color-white);
  border-left: 4px solid var(--color-red);
  border-radius: var(--radius-sm);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--color-navy);
  line-height: 1.8;
}

.excerpt-block .placeholder-note {
  display: block;
  margin-top: 1.25rem;
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--color-red);
  text-transform: uppercase;
  font-weight: 700;
}

/* ---- Themes list ---- */
.themes-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.theme-chip {
  background: var(--color-white);
  border: 1px solid var(--color-cream-dark);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  text-align: center;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-navy);
}

/* ---- Author page ---- */
.author-hero {
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: 1fr;
}

.author-photo-placeholder {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-align: center;
  padding: 2rem;
  border: 3px solid var(--color-gold);
}

.service-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.service-fact {
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
}

.service-fact strong {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-red);
  margin-bottom: 0.3rem;
}

.service-fact span { font-size: 0.95rem; color: var(--color-navy); font-weight: 600; }

/* ---- Reviews ---- */
.review-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-gold);
}

.review-card .stars { color: var(--color-gold); margin-bottom: 1rem; letter-spacing: 2px; }
.review-card p.quote { font-style: italic; color: var(--color-gray-600); margin-bottom: 1.5rem; }
.review-card .reviewer { font-size: 0.85rem; font-weight: 700; color: var(--color-navy); }
.review-card .placeholder-tag {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-red);
  font-weight: 700;
}

/* ---- Buy links ---- */
.buy-panel {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.buy-formats {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.format-chip {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  color: var(--color-navy);
}

.buy-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-navy-dark);
  color: rgba(255,255,255,0.75);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
  padding-bottom: 3rem;
}

.footer-grid .logo { color: var(--color-white); margin-bottom: 1rem; display: inline-block; }
.footer-grid p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }

.footer-col h4 {
  color: var(--color-white);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}

.footer-col ul li { margin-bottom: 0.7rem; }
.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  transition: color 0.2s ease;
}
.footer-col ul li a:hover { color: var(--color-gold-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

/* ==========================================================================
   Responsive breakpoints
   ========================================================================== */

@media (min-width: 768px) {
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; }
  .author-hero { grid-template-columns: 0.9fr 1.1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .logo { font-size: 1.6rem; }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(320px, 80vw);
    background: var(--color-cream);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.75rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 105;
  }

  .nav-links.active { transform: translateX(0); }
  .nav-links a { font-size: 1.05rem; }
  .nav-links .btn-nav { width: 100%; text-align: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .buy-buttons { flex-direction: column; align-items: stretch; }
}