/* ==========================================================================
   ShopDifferent Unified Design System - Dark Glassmorphism & High Contrast
   ========================================================================== */

:root {
  --bg-dark: #090d16;
  --bg-card: rgba(18, 26, 43, 0.75);
  --bg-card-hover: rgba(26, 38, 62, 0.9);
  --bg-input: rgba(13, 20, 34, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 240, 255, 0.3);
  
  --primary: #00f0ff;
  --primary-glow: rgba(0, 240, 255, 0.25);
  --secondary: #7000ff;
  --secondary-glow: rgba(112, 0, 255, 0.25);
  --accent: #ff007a;
  --success: #00e676;
  --warning: #ffb300;
  
  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.15);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
  --glass-backdrop: blur(16px);
}

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

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

body {
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(112, 0, 255, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(0, 240, 255, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.5) 0%, transparent 100%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: var(--glass-backdrop);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #fff;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-logo span.highlight {
  background: linear-gradient(90deg, var(--primary), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
  text-shadow: 0 0 10px var(--primary-glow);
}

.badge-live {
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hero {
  padding: 3rem 0 1.5rem;
  text-align: center;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: #fff;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 840px;
  margin: 0 auto 1.75rem;
  line-height: 1.6;
}

.input-number {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.input-number:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px var(--primary-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.35rem;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all 0.25s ease;
}

.feature-card:hover {
  border-color: rgba(0, 240, 255, 0.4);
  transform: translateY(-3px);
}

.feature-card h3 {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Guides Grid */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.guide-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  color: var(--text-main);
}

.guide-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
}

.guide-card-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.guide-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.65rem;
  line-height: 1.35;
}

.guide-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.guide-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.85rem;
}

.guide-card-footer span.read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Breadcrumbs & Prose */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs .separator {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.breadcrumbs .current {
  color: var(--primary);
  font-weight: 600;
}

.article-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.75rem;
}

.article-category {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  background: rgba(0, 240, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.article-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: #fff;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 992px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
}

.prose {
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.75;
}

.prose p {
  margin-bottom: 1.35rem;
}

.prose h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  margin: 2.25rem 0 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.4rem;
}

.prose h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary);
  margin: 1.75rem 0 0.75rem;
}

.prose ul, .prose ol {
  margin-bottom: 1.35rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.callout-box {
  background: rgba(18, 26, 43, 0.85);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
}

.callout-title {
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-sticky {
  position: sticky;
  top: 90px;
}

.toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.toc-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 0.5rem;
}

.toc-list a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  display: block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.toc-list a:hover {
  color: var(--primary);
  background: rgba(0, 240, 255, 0.05);
}

.author-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 0.95rem;
  color: #fff;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-grid {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.faq-question i {
  color: var(--primary);
}

.faq-answer {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Newsletter & Subscription */
.newsletter-box {
  background: linear-gradient(135deg, rgba(112, 0, 255, 0.15), rgba(0, 240, 255, 0.15));
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
}

.alerts-pref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem auto;
  max-width: 820px;
  text-align: left;
}

.alert-pref-chip {
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
}

.alert-pref-chip.selected {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--primary);
}

.alert-chip-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: #fff;
}

.alert-chip-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.newsletter-input-group {
  display: flex;
  max-width: 540px;
  margin: 1.5rem auto 0;
  gap: 0.5rem;
}

@media (max-width: 576px) {
  .newsletter-input-group {
    flex-direction: column;
  }
}

.newsletter-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  padding: 0.85rem 1.5rem;
  color: #fff;
  font-size: 0.95rem;
}

.subscriber-status-card {
  background: rgba(13, 20, 34, 0.95);
  border: 1px solid rgba(0, 230, 118, 0.4);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  max-width: 650px;
  margin: 1.5rem auto 0;
  text-align: left;
}

.tag-badge {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: var(--glass-backdrop);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-backdrop.active {
  display: flex;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 620px;
  width: 90%;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.footer {
  background: rgba(9, 13, 22, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ==========================================================================
   RescueMatch AI Custom Styles
   ========================================================================== */

.quiz-option-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.quiz-option-card:hover {
  border-color: rgba(0, 240, 255, 0.4);
  background: rgba(20, 32, 55, 0.85);
  transform: translateY(-1px);
}

.quiz-option-card.selected {
  border-color: var(--primary);
  background: rgba(0, 240, 255, 0.12);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}

.dog-card-img:hover {
  transform: scale(1.05);
}

.feature-card:hover {
  border-color: rgba(0, 240, 255, 0.35);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(-2px);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}