/* ---------------------------------------------------------------
   1. DESIGN TOKENS
   --------------------------------------------------------------- */
:root {
  --color-bg: #f5efe6;
  --color-bg-alt: #efe6d6;
  --color-navy: #1a2a4a;
  --color-navy-light: #2c4270;
  --color-gold: #d4a543;
  --color-gold-soft: #e8c778;
  --color-ink: #2c2418;
  --color-ink-soft: #5a5040;

  --color-surface: rgba(255, 255, 255, 0.55);
  --color-surface-strong: rgba(255, 255, 255, 0.72);
  --color-border: rgba(44, 36, 24, 0.12);
  --color-shadow: rgba(26, 42, 74, 0.14);

  --font-display: 'Cinzel', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-reading: Georgia, 'Times New Roman', serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-soft: 0 8px 30px rgba(26, 42, 74, 0.12);
  --shadow-lift: 0 16px 45px rgba(26, 42, 74, 0.18);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 160ms;
  --dur-med: 320ms;
  --dur-slow: 520ms;

  --header-h: 76px;
  
  /* Performance optimizations */
  --will-change-transform: transform;
  --will-change-opacity: opacity;
}

/* ---------------------------------------------------------------
   2. RESET & BASE
   --------------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(212,165,67,0.10), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(26,42,74,0.06), transparent 55%),
    var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  /* Prevent layout thrashing */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

img { max-width: 100%; display: block; -webkit-user-drag: none; user-select: none; }

a { color: inherit; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

input {
  font-family: inherit;
  -webkit-appearance: none;
  appearance: none;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-navy);
  margin: 0;
  letter-spacing: 0.01em;
}

:focus-visible {
  outline: 2.5px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------------
   3. AMBIENT CANVAS
   --------------------------------------------------------------- */
#dust-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
  /* Reduce GPU memory on mobile */
  image-rendering: auto;
}

/* ---------------------------------------------------------------
   4. HEADER & TAB NAVIGATION
   --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  background: rgba(245, 239, 230, 0.85);
  /* Use simpler backdrop on mobile for performance */
  border-bottom: 1px solid var(--color-border);
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* Desktop gets blur, mobile doesn't for performance */
@media (min-width: 721px) {
  .site-header {
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
  }
}

.header-inner {
  max-width: 1180px;
  height: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark { 
  display: flex; 
  align-items: center;
  justify-content: center;
}
.brand-mark img {
  display: block;
  border-radius: 4px;
  object-fit: contain;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-navy);
}
.brand-sub {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.tab-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 5px;
  /* Use simpler background on mobile */
}

@media (min-width: 721px) {
  .tab-nav {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
}

.tab-btn {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  transition: color var(--dur-fast) var(--ease);
  white-space: nowrap;
  touch-action: manipulation;
  will-change: color;
}
.tab-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.tab-btn[aria-selected="true"] { color: var(--color-bg); }
.tab-btn .tab-label { transition: opacity var(--dur-fast) var(--ease); }

.tab-indicator {
  position: absolute;
  z-index: 1;
  top: 5px;
  height: calc(100% - 10px);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light));
  box-shadow: 0 4px 14px rgba(26,42,74,0.35);
  transition: left var(--dur-med) var(--ease), width var(--dur-med) var(--ease);
  will-change: left, width;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  touch-action: manipulation;
}
.hamburger-btn:hover { background: var(--color-surface); }
.hamburger-line {
  width: 20px;
  height: 2px;
  background: var(--color-navy);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
  will-change: transform, opacity;
}
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------------------------------------------------------
   5. MOBILE MENU
   --------------------------------------------------------------- */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 20, 12, 0.45);
  z-index: 49;
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease);
  will-change: opacity;
}
@media (min-width: 721px) {
  .mobile-overlay {
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }
}
.mobile-overlay.visible { opacity: 1; }

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(82vw, 340px);
  background: rgba(255, 255, 255, 0.85);
  border-left: 1px solid var(--color-border);
  z-index: 50;
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease);
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
@media (min-width: 721px) {
  .mobile-menu {
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
  }
}
.mobile-menu.open { transform: translateX(0); }

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 22px;
  border-bottom: 1px solid var(--color-border);
}
.mobile-close-btn {
  font-size: 1.6rem;
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--color-navy);
  touch-action: manipulation;
}
.mobile-close-btn:hover { background: var(--color-bg-alt); }

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  gap: 4px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-tab-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-ink);
  text-align: left;
  touch-action: manipulation;
}
.mobile-tab-btn svg { width: 19px; height: 19px; color: var(--color-gold); flex-shrink: 0; }
.mobile-tab-btn[aria-selected="true"] {
  background: var(--color-navy);
  color: #fff;
}
.mobile-tab-btn[aria-selected="true"] svg { color: var(--color-gold-soft); }
.mobile-tab-btn:not([aria-selected="true"]):hover { background: var(--color-bg-alt); }

/* ---------------------------------------------------------------
   6. LAYOUT / PANELS
   --------------------------------------------------------------- */
main {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px 80px;
}

.tab-panel {
  animation: panel-in var(--dur-slow) var(--ease);
  will-change: opacity, transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
@keyframes panel-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-inner { padding-top: 40px; }

.panel-header { margin-bottom: 28px; }
.panel-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 6px;
}
.panel-desc {
  color: var(--color-ink-soft);
  font-size: 0.96rem;
}

.block-heading {
  font-size: 1.05rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-gold);
  display: inline-block;
}

/* ---------------------------------------------------------------
   7. HOME TAB
   --------------------------------------------------------------- */
.hero {
  text-align: center;
  padding: 24px 12px 40px;
}
.hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 700;
  margin: 0 0 14px;
}
.hero-verse {
  font-family: var(--font-reading);
  font-style: italic;
  font-size: clamp(1.3rem, 3.2vw, 1.9rem);
  color: var(--color-navy);
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.5;
}
.hero-divider {
  margin: 26px auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: var(--color-gold);
  max-width: 300px;
}
.hero-divider span {
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.featured-card {
  position: relative;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px 36px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  margin-bottom: 44px;
  will-change: transform;
}
@media (min-width: 721px) {
  .featured-card {
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }
}
.featured-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(212,165,67,0.22), transparent 70%);
  pointer-events: none;
}
.featured-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-navy-light);
  font-weight: 700;
  margin-bottom: 10px;
  display: block;
}
.featured-title {
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  margin-bottom: 14px;
}
.featured-dropcap::first-letter {
  font-family: var(--font-display);
  font-size: 3.1rem;
  float: left;
  line-height: 0.8;
  padding: 8px 10px 0 0;
  color: var(--color-gold);
  font-weight: 600;
}
.featured-body {
  font-family: var(--font-reading);
  font-size: 1.15rem;
  color: var(--color-ink);
  line-height: 1.7;
}
.featured-body p { margin: 0 0 18px; }

.home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.home-block {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
}
@media (min-width: 721px) {
  .home-block {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}
.mini-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.mini-list li {
  font-size: 0.9rem;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.5);
  border-left: 3px solid var(--color-gold);
  color: var(--color-ink);
}
.mini-list .mini-empty {
  border-left-color: transparent;
  color: var(--color-ink-soft);
  font-style: italic;
  background: transparent;
  padding-left: 0;
}
.mini-list button {
  width: 100%;
  text-align: left;
  display: block;
  touch-action: manipulation;
}

/* ---------------------------------------------------------------
   8. SEARCH BAR
   --------------------------------------------------------------- */
.search-bar {
  position: relative;
  max-width: 480px;
  margin-bottom: 30px;
}
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-ink-soft);
  pointer-events: none;
}
.search-bar input {
  width: 100%;
  padding: 13px 16px 13px 44px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.94rem;
  color: var(--color-ink);
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
@media (min-width: 721px) {
  .search-bar input {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
}
.search-bar input:focus-visible {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212,165,67,0.18);
  outline: none;
}
.search-bar input::placeholder { color: var(--color-ink-soft); opacity: 0.75; }

/* ---------------------------------------------------------------
   9. GOSPEL CARDS / GRID
   --------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.gospel-card {
  position: relative;
  text-align: left;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
@media (min-width: 721px) {
  .gospel-card {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}
.gospel-card:hover, .gospel-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.card-top-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.category-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(26,42,74,0.09);
  color: var(--color-navy);
}
.bookmark-toggle {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-ink-soft);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  touch-action: manipulation;
}
.bookmark-toggle:hover { background: var(--color-bg-alt); transform: scale(1.08); }
.bookmark-toggle[aria-pressed="true"] { color: var(--color-gold); }
.bookmark-toggle svg path { transition: fill var(--dur-fast) var(--ease); }
.bookmark-toggle[aria-pressed="true"] svg path { fill: var(--color-gold); }

.gospel-card-title {
  font-size: 1.1rem;
  line-height: 1.35;
}
.gospel-card-excerpt {
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  line-height: 1.55;
  flex: 1;
}
.card-read-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-navy);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  align-self: flex-start;
  touch-action: manipulation;
}
.card-read-link svg { transition: transform var(--dur-fast) var(--ease); }
.gospel-card:hover .card-read-link svg { transform: translateX(3px); }

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--color-ink-soft);
  font-style: italic;
}

/* ---------------------------------------------------------------
   10. RESOURCES
   --------------------------------------------------------------- */
.resource-section {
  margin-bottom: 18px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
  will-change: transform;
}
@media (min-width: 721px) {
  .resource-section {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
}
.resource-section:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

.resource-section-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-navy);
  font-size: 1.02rem;
  touch-action: manipulation;
}
.resource-section-header { 
  transition: background var(--dur-fast) var(--ease), padding var(--dur-fast) var(--ease);
}
.resource-section-header:hover { background: rgba(255,255,255,0.45); }
.resource-section-header .section-count {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--color-ink-soft);
  font-family: var(--font-body);
  margin-left: 6px;
  opacity: 0.7;
  transition: opacity var(--dur-fast) var(--ease);
}
.resource-section-header:hover .section-count {
  opacity: 1;
}
.resource-chevron { 
  transition: transform var(--dur-med) var(--ease), color var(--dur-med) var(--ease); 
  color: var(--color-gold);
  will-change: transform;
}
.resource-section-header:hover .resource-chevron { color: var(--color-gold-soft); }
.resource-section.collapsed .resource-chevron { transform: rotate(-90deg); }

.resource-section-body {
  max-height: 10000px;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  transition: max-height var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease), padding var(--dur-med) var(--ease), border-top var(--dur-med) var(--ease);
}
.resource-section.collapsed .resource-section-body {
  max-height: 0;
  opacity: 0;
  padding: 0;
  border-top: none;
}
.resource-section-body > .resource-item-wrapper {
  overflow: hidden;
}
.resource-section-body .resource-item {
  padding: 14px 22px;
  border-top: 1px solid var(--color-border);
  opacity: 1;
  transform: scaleY(1);
  transition: padding var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
  transform-origin: top;
}
.resource-section.collapsed .resource-section-body .resource-item {
  padding: 0 22px;
  opacity: 0;
  transform: scaleY(0.7);
  border-color: transparent;
}
.resource-section .resource-item:first-child { border-top: none; }

.resource-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  border-top: 1px solid var(--color-border);
}
.resource-item:first-child { border-top: none; }
.resource-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
}
.resource-info { flex: 1; min-width: 0; }
.resource-name {
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.resource-meta { font-size: 0.76rem; color: var(--color-ink-soft); }
.resource-actions { display: flex; gap: 8px; flex-shrink: 0; }
.resource-actions .icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  background: rgba(26,42,74,0.07);
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  touch-action: manipulation;
}
.resource-actions .icon-btn:hover { background: rgba(26,42,74,0.15); transform: translateY(-2px); }

.resource-section-body .resource-item-wrapper {
  display: flex;
  flex-direction: column;
  transition: opacity var(--dur-med) var(--ease);
}
.resource-section.collapsed .resource-section-body .resource-item-wrapper {
  opacity: 0;
}

/* ---------------------------------------------------------------
   11. BOOKMARKS TAB
   --------------------------------------------------------------- */
/* (bookmark remove button now uses the standard .card-top-row / .bookmark-toggle layout) */

/* ---------------------------------------------------------------
   12. ANNOUNCEMENTS
   --------------------------------------------------------------- */
.announcement-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.announcement-item {
  display: flex;
  gap: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
}
@media (min-width: 721px) {
  .announcement-item {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
}
.announcement-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-soft));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
}
.announcement-icon img {
  width: 18px;
  height: 18px;
  /* Tint the SVG navy to match the badge's icon color */
  filter: brightness(0) saturate(100%) invert(13%) sepia(24%) saturate(1900%) hue-rotate(185deg) brightness(90%) contrast(95%);
}
.announcement-text { font-size: 0.94rem; color: var(--color-ink); padding-top: 6px; }
.announcement-date { display: block; font-size: 0.74rem; color: var(--color-ink-soft); margin-top: 4px; }

/* ---------------------------------------------------------------
   13. READING OVERLAY
   --------------------------------------------------------------- */
.reading-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.reading-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 16, 10, 0.55);
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease);
  will-change: opacity;
}
@media (min-width: 721px) {
  .reading-backdrop {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
}
.reading-overlay.visible .reading-backdrop { opacity: 1; }

.reading-panel {
  position: relative;
  width: min(720px, 100%);
  max-height: 92vh;
  background: #fbf7ee;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: 0 -20px 60px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform var(--dur-slow) var(--ease);
  overflow: hidden;
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.reading-overlay.visible .reading-panel { transform: translateY(0); }

@media (min-width: 721px) {
  .reading-overlay { align-items: center; }
  .reading-panel {
    border-radius: var(--radius-lg);
    max-height: 86vh;
    transform: translateY(24px) scale(0.97);
    opacity: 0;
    transition: transform var(--dur-slow) var(--ease), opacity var(--dur-slow) var(--ease);
  }
  .reading-overlay.visible .reading-panel { transform: translateY(0) scale(1); opacity: 1; }
}

.reading-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: rgba(251, 247, 238, 0.9);
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 721px) {
  .reading-toolbar {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }
}
.reading-category {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-navy-light);
  background: rgba(26,42,74,0.08);
  padding: 6px 12px;
  border-radius: 999px;
}
.reading-actions { display: flex; gap: 6px; }
.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
  touch-action: manipulation;
}
.icon-btn:hover { background: rgba(26,42,74,0.08); }
.icon-btn[aria-pressed="true"] { color: var(--color-gold); }
.icon-btn[aria-pressed="true"] svg path { fill: var(--color-gold); }

.reading-body {
  overflow-y: auto;
  padding: 30px 32px 50px;
  -webkit-overflow-scrolling: touch;
}
.reading-title {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 22px;
}
.reading-content {
  font-family: var(--font-reading);
  font-size: 1.08rem;
  color: var(--color-ink);
}
.reading-content p { margin: 0 0 16px; }
.reading-content h3 {
  font-family: var(--font-reading);
  font-style: italic;
  font-weight: normal;
  font-size: 1.2rem;
  color: var(--color-navy-light);
  margin: 26px 0 12px;
}
.reading-content blockquote {
  margin: 20px 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--color-gold);
  font-style: italic;
  color: var(--color-navy);
}

/* ---------------------------------------------------------------
   14. TOAST
   --------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-navy);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
  z-index: 200;
  white-space: nowrap;
  will-change: opacity, transform;
}
.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------------------------------------------------------------
   15. UTILITY
   --------------------------------------------------------------- */
[hidden] { display: none !important; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------------------
   16. RESPONSIVE BREAKPOINTS
   --------------------------------------------------------------- */

/* Tablet: hide tab labels, show icons only */
@media (max-width: 820px) {
  .tab-btn .tab-label { display: none; }
  .tab-btn { padding: 10px 14px; }
  .header-inner { padding: 0 20px; }
  .home-grid { grid-template-columns: 1fr; }
}

/* Mobile: hamburger menu, single column */
@media (max-width: 720px) {
  :root { --header-h: 66px; }
  .tab-nav { display: none; }
  .hamburger-btn { display: flex; }
  .header-inner { padding: 0 18px; }
  main { padding: 0 18px 70px; }
  .panel-inner { padding-top: 26px; }
  .featured-card { padding: 26px 22px; }
  .home-grid { grid-template-columns: 1fr; gap: 18px; }
  .card-grid { grid-template-columns: 1fr; }
  .hero { padding: 12px 4px 30px; }
  
  /* Reduce particle count on mobile via canvas density */
  #dust-canvas { opacity: 0.25; }
}

/* Small mobile: compact spacing/typography */
@media (max-width: 480px) {
  .brand-sub { display: none; }
  .featured-card { padding: 20px 18px; border-radius: var(--radius-md); }
  .home-block { padding: 18px 18px; }
  .gospel-card { padding: 18px; }
  .reading-body { padding: 22px 20px 40px; }
  .reading-toolbar { padding: 13px 16px; }
  .panel-title { font-size: 1.4rem; }
  .search-bar input { padding: 11px 14px 11px 40px; font-size: 0.9rem; }
}

/* ---------------------------------------------------------------
   17. REDUCED MOTION
   --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  #dust-canvas { display: none; }
}

/* ---------------------------------------------------------------
   NAVIGATION FEEDBACK
   --------------------------------------------------------------- */
/* Subtle edge hint for swipe gesture */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(to right, rgba(212, 165, 67, 0.08), transparent);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

@media (max-width: 820px) {
  body::before {
    opacity: 1;
  }
}

/* Optional: Show a subtle back indicator on swipe */
.swipe-indicator {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60px;
  background: var(--color-gold);
  border-radius: 0 4px 4px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 999;
}