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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-dark);
  background-color: var(--color-bg-cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  opacity: 0.8;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  color: var(--color-text-dark);
}

/* Header - Sticky Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(255, 249, 243, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

.header-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-dark);
}

.header-nav {
  display: none;
}

.header-cta-mobile {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.header-cta-mobile:hover,
.header-cta-mobile:active {
  transform: translateY(-2px);
  color: var(--color-primary-dark);
}

/* Hero Section */
.hero {
  margin-top: 56px;
  padding: var(--spacing-xl) var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-bg-cream) 0%, var(--color-bg-light) 100%);
  position: relative;
  overflow: hidden;
}

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

.hero-content {
  text-align: center;
}

.hero-icon-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.hero-icon {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-jade);
  animation: iconFloat 6s ease-in-out infinite;
}

@keyframes iconFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-12px) scale(1.02); }
}

.hero-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--color-secondary-dark);
  margin-bottom: var(--spacing-md);
}

.hero-description {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: var(--color-text-medium);
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 14px 24px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  font-family: var(--font-sans);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  min-height: 56px;
  cursor: pointer;
}

.download-button.google-play {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-jade) 50%, var(--color-secondary) 100%);
  color: white;
  border-color: var(--color-primary-light);
}

.download-button.google-play:hover,
.download-button.google-play:active {
  transform: translateY(-3px);
  box-shadow: var(--shadow-jade);
}

.download-button.app-store.coming-soon {
  background: #2a2a2a;
  color: rgba(255, 255, 255, 0.6);
  opacity: 0.55;
  filter: grayscale(0.6);
  cursor: not-allowed;
  position: relative;
}

.coming-soon-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--color-accent);
  color: white;
  font-size: 0.625rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

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

.button-label-top {
  font-size: 0.625rem;
  text-transform: uppercase;
  opacity: 0.9;
  letter-spacing: 0.05em;
}

.button-label-main {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.hero-visual {
  position: relative;
  margin-top: var(--spacing-lg);
}

.hero-banner {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.mural-frame-decoration {
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border: 3px solid var(--color-secondary);
  border-radius: var(--radius-xl);
  pointer-events: none;
  opacity: 0.3;
  z-index: var(--z-decoration);
}

.silk-ribbon-decoration {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to right, transparent, var(--color-jade-light) 50%, transparent);
  opacity: 0.15;
  pointer-events: none;
  z-index: var(--z-decoration);
}

/* Features Section */
.features {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-bg-cream);
}

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

.section-title {
  font-size: var(--font-size-xl);
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-medium);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-sm);
  font-style: italic;
}

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

.feature-card {
  background: linear-gradient(135deg, white 0%, var(--color-bg-light) 100%);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  transition: transform var(--transition-silk), box-shadow var(--transition-silk);
  opacity: 0;
  transform: translateY(20px);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.feature-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary-dark);
}

.feature-description {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: var(--color-text-medium);
}

/* Download CTA Section */
.download-cta {
  padding: var(--spacing-3xl) var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-jade) 50%, var(--color-secondary) 100%);
  color: white;
  text-align: center;
}

.download-cta-container {
  max-width: 800px;
  margin: 0 auto;
}

.download-cta-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: white;
}

.download-cta-subtitle {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

.download-buttons-large {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 400px;
  margin: 0 auto;
}

.download-button-large {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 18px 32px;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255, 255, 255, 0.3);
  font-family: var(--font-sans);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  min-height: 64px;
  cursor: pointer;
}

.download-button-large.google-play {
  background: white;
  color: var(--color-primary-dark);
}

.download-button-large.google-play:hover,
.download-button-large.google-play:active {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.download-button-large.app-store.coming-soon {
  background: #2a2a2a;
  color: rgba(255, 255, 255, 0.6);
  opacity: 0.55;
  filter: grayscale(0.6);
  cursor: not-allowed;
  position: relative;
}

.coming-soon-badge-large {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.store-icon-large {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.button-label-large {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.button-label-large-top {
  font-size: 0.75rem;
  text-transform: uppercase;
  opacity: 0.8;
  letter-spacing: 0.05em;
}

.button-label-large-main {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

/* About Section */
.about {
  padding: var(--spacing-2xl) var(--spacing-sm);
  background: var(--color-bg-light);
}

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

.about-content {
  margin-top: var(--spacing-xl);
}

.about-text p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: var(--color-text-medium);
  margin-bottom: var(--spacing-md);
}

.about-contact {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
}

.about-contact h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.about-contact p {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  margin-bottom: var(--spacing-xs);
}

.contact-email {
  display: inline-block;
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.contact-email:hover,
.contact-email:active {
  background-color: var(--color-bg-mural);
}

/* Footer */
.footer {
  padding: var(--spacing-xl) var(--spacing-sm);
  background: var(--color-text-dark);
  color: var(--color-bg-light);
}

.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: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.footer-name {
  font-family: var(--font-serif);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

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

.footer-contact a {
  color: var(--color-secondary-light);
}

.footer-legal {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xs);
}

.footer-legal a {
  color: var(--color-bg-light);
  text-decoration: underline;
}

.footer-separator {
  color: var(--color-text-light);
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

/* Sticky Bottom CTA - Mobile Only */
.sticky-bottom-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 249, 243, 0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  z-index: var(--z-sticky-cta);
  transform: translateY(100%);
  transition: transform var(--transition-base);
  box-shadow: 0 -4px 12px var(--color-shadow);
}

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

.sticky-cta-content {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.sticky-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sticky-text {
  flex: 1;
}

.sticky-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.sticky-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-medium);
}

.sticky-download-btn {
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-jade) 100%);
  color: white;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.sticky-download-btn:hover,
.sticky-download-btn:active {
  transform: scale(1.05);
  box-shadow: var(--shadow-jade);
}

/* Utility Classes */
.nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  transition: color var(--transition-fast);
}

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

.cta-button-small {
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-jade) 100%);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  transition: transform var(--transition-fast);
  min-height: 36px;
  display: flex;
  align-items: center;
}

.cta-button-small:hover,
.cta-button-small:active {
  transform: translateY(-2px);
}