/* Gothic Prism: Dark Merge - Gothic Purple Theme */

/* ======================
   CSS Variables
   ====================== */
:root {
  /* Gothic Purple Color Palette */
  --color-primary: #6B2F8A;
  --color-primary-dark: #5A1E6E;
  --color-primary-light: #8A4BA8;
  --color-crimson: #8B1538;
  --color-crimson-dark: #6B0F28;
  --color-crimson-accent: #A01A3A;
  --color-gold: #D4A853;
  --color-gold-dark: #B8941F;
  --color-ink-black: #1A0F1F;
  --color-dark-gray: #2A2433;
  --color-cream: #F5F3ED;
  --color-white: #FEFEFE;
  --color-shadow: rgba(26, 15, 31, 0.6);
  
  /* Typography */
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Borders */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.6s ease-out;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 4px 16px var(--color-shadow);
  --shadow-lg: 0 8px 24px var(--color-shadow);
  --glow-purple: 0 0 20px rgba(107, 47, 138, 0.4);
  --glow-crimson: 0 0 20px rgba(139, 21, 56, 0.3);
}

/* ======================
   Base Styles
   ====================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark-gray);
  background-color: var(--color-cream);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:active {
  color: var(--color-primary-light);
}

/* ======================
   Header
   ====================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--color-ink-black) 0%, var(--color-dark-gray) 100%);
  box-shadow: var(--shadow-md);
  padding: 0.75rem 1rem;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.header-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-white);
  display: none;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  color: var(--color-cream);
  font-size: 0.875rem;
  padding: 0.5rem;
  display: none;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link:active {
  color: var(--color-gold);
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--glow-purple);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-cta:hover,
.nav-cta:active {
  transform: translateY(-2px);
  box-shadow: var(--glow-purple), var(--shadow-lg);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .header {
    padding: 1rem 1.5rem;
  }
  
  .header-icon {
    width: 44px;
    height: 44px;
  }
  
  .header-title {
    display: block;
  }
  
  .nav-link {
    display: block;
  }
  
  .header-nav {
    gap: 1.5rem;
  }
}

/* ======================
   Hero Section
   ====================== */
.hero {
  padding: var(--spacing-xl) var(--spacing-md);
  background: linear-gradient(180deg, var(--color-ink-black) 0%, var(--color-dark-gray) 100%);
  color: var(--color-white);
  text-align: center;
}

.hero-container {
  max-width: 900px;
  margin: 0 auto;
}

.hero-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-md);
  border-radius: 20px;
  box-shadow: var(--glow-purple), var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
  text-shadow: var(--glow-purple);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-gold);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.hero-description {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-cream);
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  align-items: center;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  min-height: 56px;
  width: 100%;
  max-width: 300px;
  position: relative;
  border: 2px solid transparent;
}

.download-btn.google-play {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-color: var(--color-primary-light);
  box-shadow: var(--glow-purple);
}

.download-btn.google-play:hover,
.download-btn.google-play:active {
  transform: translateY(-3px);
  box-shadow: var(--glow-purple), var(--shadow-lg);
  border-color: var(--color-gold);
  color: var(--color-white);
}

.download-btn.app-store {
  background: #2a2a2a;
  color: rgba(255, 255, 255, 0.55);
  border: 2px solid #3a3a3a;
  opacity: 0.55;
  filter: grayscale(0.6);
  cursor: not-allowed;
}

.download-btn.app-store .coming-soon-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--color-crimson);
  color: var(--color-white);
  font-size: 0.625rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.btn-label {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.9;
}

.btn-store {
  font-size: 1.125rem;
  font-weight: 700;
}

.hero-banner {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

@media (min-width: 768px) {
  .hero {
    padding: var(--spacing-xxl) var(--spacing-lg);
  }
  
  .hero-icon {
    width: 140px;
    height: 140px;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-subtitle {
    font-size: 1.5rem;
  }
  
  .hero-description {
    font-size: 1.125rem;
  }
  
  .download-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

/* ======================
   Features Section
   ====================== */
.features {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: var(--color-cream);
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-ink-black);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-crimson) 100%);
  margin: var(--spacing-sm) auto 0;
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover,
.feature-card:active {
  transform: translateY(-5px);
  box-shadow: var(--glow-purple), var(--shadow-md);
  border-color: var(--color-gold);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  text-align: center;
  filter: drop-shadow(var(--glow-purple));
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.feature-description {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-dark-gray);
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section-title {
    font-size: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ======================
   Screenshots Section
   ====================== */
.screenshots {
  padding: var(--spacing-xxl) var(--spacing-md);
  background: linear-gradient(180deg, var(--color-dark-gray) 0%, var(--color-ink-black) 100%);
  color: var(--color-white);
}

.screenshots-container {
  max-width: 1200px;
  margin: 0 auto;
}

.screenshots .section-title {
  color: var(--color-white);
}

.screenshots .section-title::after {
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-crimson) 100%);
}

.screenshots-carousel {
  display: flex;
  gap: var(--spacing-md);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: var(--spacing-md);
  -webkit-overflow-scrolling: touch;
}

.screenshots-carousel::-webkit-scrollbar {
  height: 8px;
}

.screenshots-carousel::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.screenshots-carousel::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}

.screenshot-img {
  flex: 0 0 280px;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  scroll-snap-align: center;
  transition: transform var(--transition-normal);
}

.screenshot-img:hover,
.screenshot-img:active {
  transform: scale(1.05);
}

@media (min-width: 768px) {
  .screenshot-img {
    flex: 0 0 360px;
  }
}

@media (min-width: 1024px) {
  .screenshots-carousel {
    justify-content: center;
    flex-wrap: wrap;
    overflow-x: visible;
  }
  
  .screenshot-img {
    flex: 0 0 280px;
  }
}

/* ======================
   Download CTA Section
   ====================== */
.download-cta {
  padding: var(--spacing-xxl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-crimson-dark) 100%);
  color: var(--color-white);
  text-align: center;
}

.download-cta-container {
  max-width: 900px;
  margin: 0 auto;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  text-shadow: var(--shadow-md);
}

.cta-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  color: var(--color-cream);
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 3rem;
  }
  
  .cta-subtitle {
    font-size: 1.5rem;
  }
}

/* ======================
   About Section
   ====================== */
.about {
  padding: var(--spacing-xxl) var(--spacing-md);
  background-color: var(--color-white);
}

.about-container {
  max-width: 900px;
  margin: 0 auto;
}

.about-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-dark-gray);
}

.about-content p {
  margin-bottom: var(--spacing-md);
}

.about-contact {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 2px solid var(--color-primary);
  font-weight: 500;
}

.email-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-light);
  transition: all var(--transition-fast);
}

.email-link:hover,
.email-link:active {
  color: var(--color-crimson);
  text-decoration-color: var(--color-crimson);
}

/* ======================
   Footer
   ====================== */
.footer {
  padding: var(--spacing-xl) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-ink-black) 0%, var(--color-dark-gray) 100%);
  color: var(--color-cream);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
}

.footer-app-name {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-white);
}

.footer-contact {
  margin-bottom: var(--spacing-md);
  font-size: 0.9375rem;
}

.footer-legal {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.legal-link {
  color: var(--color-cream);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.legal-link:hover,
.legal-link:active {
  color: var(--color-gold);
}

.separator {
  color: var(--color-cream);
}

.footer-copyright {
  font-size: 0.875rem;
  opacity: 0.8;
  margin-top: var(--spacing-md);
}

/* ======================
   Sticky Mobile CTA
   ====================== */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-ink-black) 0%, var(--color-dark-gray) 100%);
  box-shadow: 0 -4px 16px var(--color-shadow);
  z-index: 999;
  opacity: 0;
  transform: translateY(100%);
  transition: all var(--transition-normal);
}

.sticky-cta.visible {
  opacity: 1;
  transform: translateY(0);
}

.sticky-cta-btn {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  font-size: 1.125rem;
  font-weight: 700;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--glow-purple);
  transition: all var(--transition-fast);
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sticky-cta-btn:hover,
.sticky-cta-btn:active {
  transform: translateY(-2px);
  box-shadow: var(--glow-purple), var(--shadow-lg);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .sticky-cta {
    display: none;
  }
}