/* OP Apps - Shared Design System Styles */

:root {
  /* Backgrounds */
  --color-background:        #0D0D0D;
  --color-surface:           #1A1A1A;
  --color-surface-elevated:  #242424;

  /* Accent - Override per app */
  --color-accent:            #5B8FA8;
  --color-accent-hover:      #6BA0B9;

  /* Text */
  --color-primary-text:      #F0F0F0;
  --color-secondary-text:    #A0A0A0;
  --color-muted-text:        #666666;

  /* Typography */
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'SF Pro Text', system-ui, sans-serif;

  /* Spacing */
  --spacing-xs:   0.5rem;
  --spacing-sm:   1rem;
  --spacing-md:   1.5rem;
  --spacing-lg:   2rem;
  --spacing-xl:   3rem;
  --spacing-2xl:  5rem;

  --max-width:     1200px;
  --content-width: 800px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-background);
  color: var(--color-primary-text);
  line-height: 1.6;
  font-size: 1.125rem;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container--narrow {
  max-width: var(--content-width);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

p {
  color: var(--color-secondary-text);
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-links a {
  color: var(--color-secondary-text);
  font-size: 0.875rem;
}

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

.language-switcher {
  display: flex;
  gap: var(--spacing-xs);
}

.lang-btn {
  background: transparent;
  border: 1px solid var(--color-muted-text);
  color: var(--color-muted-text);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.lang-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.lang-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-background);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(80px + var(--spacing-2xl)) var(--spacing-lg) var(--spacing-2xl);
  text-align: center;
}

.hero-content {
  max-width: 700px;
}

.app-icon {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 20px 60px rgba(91, 143, 168, 0.2);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-secondary-text);
  margin-bottom: var(--spacing-lg);
}

.hero-badges {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

.badge {
  background: var(--color-surface-elevated);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  font-size: 0.875rem;
  color: var(--color-secondary-text);
}

/* CTA Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: var(--color-accent);
  color: var(--color-background);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

.cta-button:hover {
  background: var(--color-accent-hover);
  color: var(--color-background);
  transform: translateY(-2px);
}

.app-store-badge {
  height: 50px;
}

/* Sections */
section {
  padding: var(--spacing-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
}

/* Features Grid */
.features {
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-surface-elevated);
  padding: var(--spacing-xl);
  border-radius: 16px;
  text-align: center;
  transition: transform 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
}

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

.feature-card h3 {
  color: var(--color-primary-text);
}

.feature-card p {
  font-size: 0.9375rem;
  margin-bottom: 0;
}

/* Screenshots */
.screenshots {
  overflow: hidden;
}

.screenshots-carousel {
  display: flex;
  gap: var(--spacing-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--spacing-lg) 0;
  -webkit-overflow-scrolling: touch;
}

.screenshot-placeholder {
  flex: 0 0 auto;
  width: 280px;
  height: 560px;
  background: var(--color-surface-elevated);
  border-radius: 24px;
  scroll-snap-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted-text);
  font-size: 0.875rem;
  border: 1px dashed var(--color-muted-text);
}

.screenshot {
  flex: 0 0 auto;
  height: 560px;
  width: auto;
  border-radius: 24px;
  scroll-snap-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

/* What's New */
.whats-new {
  background: var(--color-surface);
}

.whats-new-list {
  max-width: var(--content-width);
  margin: 0 auto;
}

.whats-new-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-surface-elevated);
}

.whats-new-item:last-child {
  border-bottom: none;
}

.whats-new-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.whats-new-content h3 {
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.whats-new-content p {
  font-size: 0.875rem;
  margin-bottom: 0;
}

.version-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-background);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

/* PRO Section */
.pro-section {
  background: var(--color-surface);
}

.pro-card {
  background: linear-gradient(135deg, var(--color-surface-elevated) 0%, rgba(var(--accent-rgb, 91, 143, 168), 0.1) 100%);
  border: 1px solid var(--color-accent);
  border-radius: 20px;
  padding: var(--spacing-xl);
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
}

.pro-badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-background);
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pro-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary-text);
  margin-bottom: var(--spacing-xs);
}

.pro-price-note {
  color: var(--color-secondary-text);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

.pro-features {
  list-style: none;
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

.pro-features li {
  padding: var(--spacing-xs) 0;
  color: var(--color-secondary-text);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.pro-features li::before {
  content: "\2713";
  color: var(--color-accent);
  font-weight: bold;
}

/* Download Section */
.download {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

/* Footer */
footer {
  background: var(--color-surface);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
}

.footer-links {
  margin-bottom: var(--spacing-md);
}

.footer-links a {
  color: var(--color-secondary-text);
  margin: 0 var(--spacing-md);
  font-size: 0.875rem;
}

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

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

/* Privacy & Support Pages */
.page-header {
  padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
  background: var(--color-surface);
  text-align: center;
}

.page-content {
  padding: var(--spacing-xl) 0;
}

.content-section {
  margin-bottom: var(--spacing-xl);
}

.content-section h2 {
  color: var(--color-primary-text);
  border-bottom: 1px solid var(--color-surface-elevated);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.content-section h3 {
  color: var(--color-primary-text);
  margin-top: var(--spacing-md);
}

.content-section ul {
  list-style: none;
  padding-left: 0;
}

.content-section li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-md);
  position: relative;
  color: var(--color-secondary-text);
}

.content-section li::before {
  content: "\2022";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* FAQ */
.faq-item {
  background: var(--color-surface-elevated);
  border-radius: 12px;
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: none;
  border: none;
  color: var(--color-primary-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s ease;
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.05);
}

.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--color-secondary-text);
}

/* Contact Section */
.contact-card {
  background: var(--color-surface-elevated);
  padding: var(--spacing-xl);
  border-radius: 16px;
  text-align: center;
}

.contact-card h3 {
  margin-bottom: var(--spacing-sm);
}

.contact-email {
  font-size: 1.125rem;
  font-weight: 600;
}

/* Info Box */
.info-box {
  background: rgba(91, 143, 168, 0.1);
  border: 1px solid var(--color-accent);
  border-radius: 12px;
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.info-box p {
  color: var(--color-primary-text);
  margin-bottom: 0;
}

/* Privacy Highlights */
.privacy-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.privacy-highlight {
  background: var(--color-surface-elevated);
  padding: var(--spacing-md);
  border-radius: 12px;
  text-align: center;
}

.privacy-highlight-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs);
}

.privacy-highlight p {
  font-size: 0.875rem;
  margin-bottom: 0;
  color: var(--color-primary-text);
}

/* Coming Soon Badge */
.coming-soon-badge {
  display: inline-block;
  background: var(--color-surface-elevated);
  color: var(--color-accent);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid var(--color-accent);
}

/* Hub Page Specific */
.hub-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(80px + var(--spacing-xl)) var(--spacing-lg) var(--spacing-xl);
  text-align: center;
}

.hub-logo {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-2xl) 0;
}

.app-card {
  background: var(--color-surface-elevated);
  border-radius: 20px;
  padding: var(--spacing-xl);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  display: block;
  border: 1px solid transparent;
}

.app-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--card-accent, var(--color-accent));
}

.app-card-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  margin-bottom: var(--spacing-md);
}

.app-card-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-text);
  margin-bottom: var(--spacing-xs);
}

.app-card-tagline {
  color: var(--color-secondary-text);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.app-card-status {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  display: inline-block;
}

.app-card-status.available {
  background: rgba(0, 255, 102, 0.1);
  color: #00FF66;
}

.app-card-status.coming-soon {
  background: rgba(255, 107, 107, 0.1);
  color: #FF6B6B;
}

.app-card-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  display: inline-block;
}

.app-card-badge.available {
  background: rgba(0, 255, 102, 0.1);
  color: #00FF66;
}

.app-card-badge.coming-soon {
  background: rgba(255, 107, 107, 0.1);
  color: #FF6B6B;
}

.app-card-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.app-card-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-text);
  margin-bottom: var(--spacing-xs);
}

.app-card-content p {
  color: var(--color-secondary-text);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

/* Hub About Section */
.hub-about {
  background: var(--color-surface);
  text-align: center;
}

.hub-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.hub-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.hub-feature-icon {
  font-size: 2rem;
}

.hub-feature span:last-child {
  color: var(--color-secondary-text);
  font-size: 0.875rem;
}

.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;
}

.apps-section {
  background: var(--color-background);
}

/* Responsive */
@media (max-width: 768px) {
  body {
    font-size: 0.875rem;
  }

  h3 {
    font-size: 1.125rem;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: calc(60px + var(--spacing-xl));
  }

  .app-icon {
    width: 100px;
    height: 100px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .feature-card {
    padding: var(--spacing-md);
  }

  .feature-icon {
    font-size: 2rem;
  }

  .screenshot-placeholder {
    width: 220px;
    height: 440px;
  }

  .screenshot {
    height: 440px;
  }

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

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero-badges {
    flex-direction: column;
    align-items: center;
  }

  .privacy-highlights {
    grid-template-columns: 1fr;
  }

  .language-switcher {
    gap: 2px;
  }

  .lang-btn {
    padding: 0.25rem 0.375rem;
    font-size: 0.625rem;
  }
}

/* Utilities */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-muted-text);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

/* Hidden by default for i18n */
.lang-content {
  display: none;
}

.lang-content.active {
  display: block;
}