/* Sandhyavandanam Q&A — Slide Deck Styles */
/* ========================================= */

/* --- Design Tokens --- */
:root {
  --color-sun: #b8860b;
  --color-sun-light: #daa520;
  --color-dawn: #c76f30;
  --color-sky: #1a3a5c;
  --color-sky-light: #2a5a8c;
  --color-water: #2e6b8a;
  --color-saffron: #c45e1a;
  --color-bg: #faf8f5;
  --color-bg-warm: #f5f0e8;
  --color-bg-card: #ffffff;
  --color-text: #2c2419;
  --color-text-muted: #7a7062;
  --color-text-light: #9a8e7e;
  --color-border: #e5ddd0;
  --color-border-light: #ede8e0;
  --color-accent: var(--color-sun);
  --color-accent-bg: #fdf8ef;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-sanskrit: 'Noto Sans Devanagari', sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(44,36,25,0.08);
  --shadow-md: 0 4px 12px rgba(44,36,25,0.1);
  --shadow-lg: 0 8px 24px rgba(44,36,25,0.12);
  --max-width: 900px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
}

/* --- Top Bar --- */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1.5rem;
  background: var(--color-sky);
  color: #d4c8a8;
  font-size: 0.82rem;
  position: sticky;
  top: 0;
  z-index: 100;
}
.top-bar a {
  color: #d4c8a8;
  text-decoration: none;
  transition: color 0.2s;
}
.top-bar a:hover { color: var(--color-sun-light); }
.top-bar span { font-family: var(--font-sanskrit); }

/* --- Progress Bar --- */
.progress-container {
  position: sticky;
  top: 33px;
  z-index: 99;
  height: 3px;
  background: var(--color-border);
}
.progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-dawn), var(--color-sun-light));
  transition: width 0.2s ease;
}

/* --- Header --- */
.site-header {
  background: linear-gradient(135deg, #1a2a3a 0%, #2a3a4a 40%, #1a3050 100%);
  padding: 3rem 1.5rem 2.5rem;
  text-align: center;
}
.header-content { max-width: var(--max-width); margin: 0 auto; }
.header-ornament {
  font-size: 2.8rem;
  color: var(--color-sun-light);
  margin-bottom: 0.5rem;
  text-shadow: 0 0 20px rgba(218,165,32,0.3);
}
.site-title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: #f0e8d0;
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: 0.02em;
}
.site-subtitle {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-sun-light);
  font-weight: 400;
  font-style: italic;
  margin-bottom: 0.3rem;
}
.site-source {
  font-size: 0.85rem;
  color: #8a9aaa;
}
.header-sections {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.header-tag {
    font-size: 0.7rem;
    padding: 0.25rem 0.75rem;
    background: rgba(218, 165, 32, 0.15);
    border: 1px solid rgba(218, 165, 32, 0.3);
    border-radius: 20px;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.02em;
}

.download-btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: #f0e8d0;
  background: rgba(184,134,11,0.25);
  border: 1px solid var(--color-sun);
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
  animation: btnGlow 2.5s ease-in-out infinite;
}
.download-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -75%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgba(255,223,100,0.25) 45%,
    rgba(255,223,100,0.5) 50%,
    rgba(255,223,100,0.25) 55%,
    transparent 60%
  );
  animation: shimmer 3s ease-in-out infinite;
}
@keyframes shimmer {
  0% { left: -75%; }
  100% { left: 125%; }
}
@keyframes btnGlow {
  0%, 100% { box-shadow: 0 0 6px rgba(218,165,32,0.3); }
  50% { box-shadow: 0 0 14px rgba(218,165,32,0.6), 0 0 4px rgba(255,223,100,0.3); }
}
.download-btn:hover {
  background: var(--color-sun);
  color: #1a2a3a;
  box-shadow: 0 0 18px rgba(218,165,32,0.7);
}

/* --- View Nav --- */
.view-nav {
  position: sticky;
  top: 36px;
  z-index: 90;
  background: var(--color-bg-warm);
  border-bottom: 1px solid var(--color-border);
  padding: 0.6rem 1rem;
}
.nav-inner {
  display: flex;
  gap: 0.4rem;
  max-width: var(--max-width);
  margin: 0 auto;
  justify-content: center;
}
.nav-btn {
  padding: 0.45rem 1.2rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  border-radius: 20px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-btn:hover { border-color: var(--color-sun); color: var(--color-sun); }
.nav-btn.active {
  background: var(--color-sky);
  color: #f0e8d0;
  border-color: var(--color-sky);
}

/* --- Views --- */
.content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}
.view { display: none; padding: 1.5rem 0; }
.view.active { display: block; }

/* --- Category Filter --- */
.category-filter, .browse-category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.category-tag {
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  font-size: 0.78rem;
  cursor: pointer;
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  transition: all 0.2s;
  white-space: nowrap;
}
.category-tag:hover { border-color: var(--color-sun); color: var(--color-sun); }
.category-tag.active {
  background: var(--color-sun);
  color: #fff;
  border-color: var(--color-sun);
}

/* --- Slide Deck --- */
.slide-wrapper {
  position: relative;
}
.slide-container {
  min-height: 420px;
  position: relative;
}
.slide {
  display: none;
  animation: slideIn 0.3s ease;
}
.slide.active { display: block; }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
}
.slide-card-header {
  background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-sky-light) 100%);
  padding: 1.5rem 2rem;
  position: relative;
}
.slide-number {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 0.78rem;
  color: rgba(240,232,208,0.5);
  font-family: var(--font-body);
}
.slide-category-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-sun-light);
  margin-bottom: 0.6rem;
  font-weight: 600;
}
.slide-question {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: #f0e8d0;
  font-weight: 600;
  line-height: 1.4;
}
.slide-card-body {
  padding: 1.8rem 2rem 2rem;
}
.slide-answer {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 1.2rem;
}
.slide-insight {
  background: var(--color-accent-bg);
  border-left: 3px solid var(--color-sun);
  padding: 1rem 1.2rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1rem;
}
.slide-insight-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sun);
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.slide-insight-text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.65;
}
.slide-sanskrit {
  background: #f5f2ed;
  border-radius: var(--radius);
  padding: 0.8rem 1.2rem;
  font-family: var(--font-sanskrit);
  font-size: 0.9rem;
  color: var(--color-sky);
  line-height: 1.7;
  border: 1px solid var(--color-border-light);
}

/* --- Slide Navigation --- */
.slide-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
  gap: 1rem;
}
.slide-nav-btn {
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}
.slide-nav-btn:hover {
  border-color: var(--color-sun);
  color: var(--color-sun);
  box-shadow: var(--shadow-sm);
}
.slide-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.slide-counter {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.keyboard-hint {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-light);
  padding-bottom: 0.5rem;
}
.keyboard-hint kbd {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-card);
  font-size: 0.72rem;
  box-shadow: 0 1px 0 var(--color-border);
}

/* --- Browse View --- */
.browse-controls {
  margin-bottom: 1.5rem;
}
.expand-controls {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  margin-top: 0.8rem;
}
.expand-btn {
  padding: 0.35rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  border-radius: 16px;
  font-size: 0.78rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.2s;
}
.expand-btn:hover { border-color: var(--color-sun); color: var(--color-sun); }

.browse-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.8rem;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.browse-card:hover { box-shadow: var(--shadow-md); }
.browse-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  user-select: none;
}
.browse-card-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-bg-card);
  background: var(--color-sky);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.browse-card-question {
  flex: 1;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}
.browse-card-toggle {
  color: var(--color-text-light);
  font-size: 0.75rem;
  flex-shrink: 0;
  transition: transform 0.3s;
  margin-top: 0.3rem;
}
.browse-card.expanded .browse-card-toggle {
  transform: rotate(180deg);
}
.browse-card-body {
  display: none;
  padding: 0 1.2rem 1.2rem;
  padding-left: 3.5rem;
}
.browse-card.expanded .browse-card-body {
  display: block;
}
.browse-answer {
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0.8rem;
}
.browse-insight {
  background: var(--color-accent-bg);
  border-left: 3px solid var(--color-sun);
  padding: 0.7rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 0.6rem;
}
.browse-insight-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sun);
  font-weight: 700;
  margin-bottom: 0.2rem;
}
.browse-insight-text {
  font-size: 0.85rem;
  line-height: 1.6;
}
.browse-sanskrit {
  background: #f5f2ed;
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  font-family: var(--font-sanskrit);
  font-size: 0.85rem;
  color: var(--color-sky);
  line-height: 1.65;
  border: 1px solid var(--color-border-light);
}

/* --- Search View --- */
.search-box {
  position: relative;
  margin-bottom: 1.2rem;
}
#search-input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-bg-card);
  color: var(--color-text);
  transition: border-color 0.2s;
}
#search-input:focus {
  outline: none;
  border-color: var(--color-sun);
  box-shadow: 0 0 0 3px rgba(184,134,11,0.1);
}
.search-count {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.search-placeholder {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem;
}
.search-result {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin-bottom: 0.6rem;
  border: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all 0.2s;
}
.search-result:hover {
  border-color: var(--color-sun);
  box-shadow: var(--shadow-sm);
}
.search-result-number {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-sky);
  margin-bottom: 0.2rem;
}
.search-result-question {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}
.search-result-preview {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.search-result-category {
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-sun);
  margin-top: 0.3rem;
}

/* --- Intro Section --- */
.intro-section {
  max-width: var(--max-width);
  margin: 1rem auto;
  padding: 1.5rem 2rem;
  background: var(--color-bg-warm);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
}
.intro-section p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  text-align: center;
  font-style: italic;
}

/* --- Search Highlight --- */
.highlight,
mark {
    background: rgba(184, 134, 11, 0.2);
    color: var(--color-text);
    padding: 0.1em 0.2em;
    border-radius: 3px;
    font-weight: 600;
}

/* --- Floating Scroll Buttons --- */
.scroll-buttons {
    position: fixed;
    bottom: 2rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.scroll-buttons.visible {
    opacity: 1;
    pointer-events: auto;
}

.scroll-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    color: var(--color-sun);
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-btn:hover {
    background: var(--color-sun);
    color: var(--color-bg-card);
    border-color: var(--color-sun);
    box-shadow: var(--shadow-lg);
    transform: scale(1.1);
}

/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-light);
  font-size: 0.82rem;
  border-top: 1px solid var(--color-border-light);
  margin-top: 1rem;
}

/* --- Touch Swipe Indicator --- */
.slide-container.swiping-left {
  transform: translateX(-20px);
  opacity: 0.7;
  transition: transform 0.15s, opacity 0.15s;
}
.slide-container.swiping-right {
  transform: translateX(20px);
  opacity: 0.7;
  transition: transform 0.15s, opacity 0.15s;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .site-title { font-size: 1.8rem; }
  .site-subtitle { font-size: 1rem; }
  .slide-card-header { padding: 1.2rem 1.2rem; }
  .slide-question { font-size: 1.15rem; }
  .slide-card-body { padding: 1.2rem; }
  .slide-answer { font-size: 0.92rem; }
  .slide-nav-btn { padding: 0.5rem 0.8rem; font-size: 0.82rem; }
  .category-filter, .browse-category-filter { gap: 0.3rem; }
  .category-tag { font-size: 0.7rem; padding: 0.25rem 0.6rem; }
  .browse-card-body { padding-left: 1.2rem; }
  .intro-section { padding: 1rem 1.2rem; }
  .top-bar { font-size: 0.75rem; padding: 0.4rem 0.8rem; }
}

/* --- Print Styles --- */
@media print {
  .top-bar, .progress-container, .view-nav, .slide-nav,
  .keyboard-hint, .category-filter, .browse-category-filter,
  .expand-controls, .search-box { display: none !important; }
  .site-header { padding: 1.5rem; }
  .slide-card { box-shadow: none; border: 1px solid #ccc; }
  body { background: #fff; }
}