/* ============================================================
   EMS HISTORY — COMPONENT STYLES (components.css)
   ============================================================
   Reusable components used across multiple pages:
   - Navigation
   - Buttons
   - Hero sections
   - Cards (book, era, org, episode)
   - Section headers
   - Badges / Tags
   - Footer
   ============================================================ */


/* ============================== */
/* NAVIGATION                     */
/* ============================== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(26, 26, 31, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-inner {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ---- Brand ---- */
.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
}

.nav-logo {
  width: 42px;
  height: 42px;
  background: var(--color-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
  /* FUTURE: Replace with actual logo image */
  /* background-image: url('../images/logo.png'); */
  /* background-size: contain; */
}

.nav-brand-text {
  font-family: var(--font-display);
  color: var(--color-white);
  font-size: var(--fs-md);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.nav-brand-text span {
  color: var(--color-gold);
}

/* ---- Nav Links ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-links > li {
  position: relative;
}

.nav-links > li > a {
  display: block;
  padding: 0.6rem 1.1rem;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}
.nav-links > li > a:hover,
.nav-links > li > a.active {
  color: var(--color-white);
}

/* Active page indicator */
.nav-links > li > a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 1.1rem;
  right: 1.1rem;
  height: 2px;
  background: var(--color-gold);
}

/* ---- Dropdown Menus ---- */
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg-dark);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  min-width: 240px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1.2rem;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: var(--fs-sm);
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.nav-dropdown-menu a:hover {
  background: rgba(255,255,255,0.05);
  color: var(--color-white);
}

.nav-dropdown-divider {
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: var(--space-xs) 0;
}

/* "New" badge in nav dropdown */
.nav-badge-new {
  background: var(--color-accent);
  color: white;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-left: auto;
}

/* ---- Mobile Toggle ---- */
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
}
.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-normal);
}

@media (max-width: 900px) {
  .nav-mobile-toggle { display: flex; }
  
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg-dark);
    flex-direction: column;
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links.open { display: flex; }
  
  .nav-links > li > a {
    padding: 0.8rem var(--space-lg);
  }
  
  .nav-dropdown-menu {
    position: static;
    display: none;
    background: rgba(0,0,0,0.2);
    border: none;
    border-radius: 0;
    box-shadow: none;
    min-width: 100%;
  }
  .nav-dropdown.open .nav-dropdown-menu { display: block; }
  .nav-dropdown-menu a { padding-left: var(--space-2xl); }
}


/* ============================== */
/* BUTTONS                        */
/* ============================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.85rem 1.8rem;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  letter-spacing: 0.03em;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: var(--color-primary-light);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--color-accent);
  color: white;
}
.btn-accent:hover {
  background: var(--color-accent-light);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.05);
  color: white;
}

/* Outline variant for light backgrounds */
.btn-outline-dark {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-outline-dark:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* btn-outline-dark inside a dark hero — flip to white */
.bk-hero .btn-outline-dark {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.bk-hero .btn-outline-dark:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.08);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  padding-left: 0;
  padding-right: 0;
}
.btn-ghost:hover { color: var(--color-primary-dark); }
.btn-ghost::after { content: ' →'; }

/* Buy buttons */
.btn-amazon {
  background: #FF9900;
  color: #111;
  font-weight: 700;
}
.btn-amazon:hover { background: #FFa929; color: #111; }

.btn-bn {
  background: #336634;
  color: white;
}
.btn-bn:hover { background: #448844; color: white; }


/* ============================== */
/* HERO SECTIONS                  */
/* ============================== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-md);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}
.hero-title em {
  font-style: normal;
  color: var(--color-gold);
}

.hero-subtitle {
  font-size: var(--fs-md);
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 520px;
  font-weight: 300;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .hero { min-height: 60vh; }
  .hero-inner { padding: var(--space-2xl) var(--space-md); }
}


/* ============================== */
/* SECTION HEADERS                */
/* ============================== */
.section-header {
  max-width: var(--max-width);
  margin: 0 auto var(--space-2xl);
  padding: 0 var(--space-lg);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--fs-base);
  color: var(--color-text-light);
  max-width: 600px;
  line-height: 1.7;
  font-weight: 300;
}
.section-dark .section-subtitle {
  color: rgba(255,255,255,0.6);
}


/* ============================== */
/* BADGES / TAGS                  */
/* ============================== */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-full);
}

.badge-new {
  background: var(--color-accent);
  color: white;
}

.badge-audiobook {
  background: rgba(0,87,168,0.1);
  color: var(--color-primary);
}

.badge-publisher {
  background: rgba(184,146,47,0.15);
  color: var(--color-gold);
}

.credential-tag {
  padding: 4px 12px;
  background: rgba(0,87,168,0.08);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}


/* ============================== */
/* CARDS — BOOK                   */
/* ============================== */
.book-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.book-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.book-card-cover {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.book-card-body {
  padding: var(--space-lg);
}

.book-card-title {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.book-card-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}


/* ============================== */
/* CARDS — ORGANIZATION           */
/* ============================== */
.org-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
}
.org-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.org-card-name {
  font-weight: 700;
  font-size: var(--fs-base);
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.org-card-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.5;
}

.org-card-url {
  display: inline-block;
  margin-top: var(--space-sm);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
}
.org-card-url:hover { color: var(--color-primary); }


/* ============================== */
/* CARDS — EPISODE                */
/* ============================== */
.episode-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.episode-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.episode-play {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  font-size: 0.8rem;
}

.episode-info { flex: 1; }
.episode-title {
  font-weight: 600;
  font-size: var(--fs-base);
  margin-bottom: 2px;
}
.episode-meta {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}


/* ============================== */
/* FOOTER                         */
/* ============================== */
.site-footer {
  background: var(--color-bg-darker);
  color: rgba(255,255,255,0.6);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer-desc {
  font-size: var(--fs-sm);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.footer-social a:hover {
  background: rgba(255,255,255,0.15);
  color: white;
}

.footer-col-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-lg);
}

.footer-links li + li { margin-top: var(--space-sm); }

.footer-links a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-white); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-xs);
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); }
}