/* ===================================
   Studio Ben - Global Styles
   Privacy-first mobile apps
   =================================== */

/* ===================================
   CSS Custom Properties
   =================================== */

:root {
  /* Brand Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-secondary: #64748b;
  --color-accent: #06b6d4;

  /* Light Mode */
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-border: #e2e8f0;
  --color-shadow: rgba(15, 23, 42, 0.1);

  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 26px;

  /* Typography */
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --line-height-heading: 1.1;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-border: #334155;
    --color-shadow: rgba(0, 0, 0, 0.3);
  }
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

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

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

/* ===================================
   Skip to Content (Accessibility)
   =================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-heading);
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

@media (min-width: 768px) {
  h1 {
    font-size: 3.5rem;
  }
}

/* ===================================
   Layout Container
   =================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ===================================
   Header
   =================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background-color: rgba(15, 23, 42, 0.8);
  }
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  min-height: 60px;
}

.logo {
  height: 40px;
  width: auto;
}

.lang-toggle {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-md);
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  transition: all var(--transition-base);
}

.lang-toggle:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.lang-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) 0;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===================================
   Sections
   =================================== */

.section {
  padding: var(--space-2xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-text);
}

/* ===================================
   App Cards Grid
   =================================== */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.app-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px var(--color-shadow);
  border-color: var(--color-primary);
}

.app-card:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.app-card h3 {
  margin-bottom: var(--space-sm);
}

.app-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.app-badges {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--color-primary);
  color: white;
}

.badge.secondary {
  background: var(--color-secondary);
}

.coming-soon {
  opacity: 0.6;
  cursor: not-allowed;
}

.coming-soon:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-border);
}

/* ===================================
   App Page Specific
   =================================== */

.app-hero {
  text-align: center;
  padding: var(--space-xl) 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.app-hero .app-icon {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-xl);
  margin: 0 auto var(--space-md);
}

.app-title {
  margin-bottom: var(--space-sm);
}

.app-tagline {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  text-decoration: none;
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.back-link:hover {
  text-decoration: underline;
}

/* ===================================
   Features Grid
   =================================== */

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

.feature-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.feature-item h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.25rem;
}

.feature-item p {
  color: var(--color-text-secondary);
}

/* ===================================
   Screenshots Section
   =================================== */

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

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

.screenshots::-webkit-scrollbar-track {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.screenshots::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
}

.screenshot-item {
  flex: 0 0 300px;
  scroll-snap-align: start;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  aspect-ratio: 9 / 19.5;
}

.screenshot-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.screenshot-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  font-weight: 600;
}

/* ===================================
   Privacy & Support Sections
   =================================== */

.privacy-section, .support-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.privacy-section h2, .support-section h2 {
  margin-bottom: var(--space-md);
}

.privacy-section p, .support-section p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.privacy-section a, .support-section a {
  color: var(--color-primary);
  text-decoration: none;
}

.privacy-section a:hover, .support-section a:hover {
  text-decoration: underline;
}

/* ===================================
   Privacy Policy & FAQ Pages
   =================================== */

.content-page {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.content-page h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
}

.content-page h2 {
  font-size: 1.75rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.content-page h3 {
  font-size: 1.25rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.content-page p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.content-page ul, .content-page ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
}

.content-page li {
  margin-bottom: var(--space-xs);
}

.content-page strong {
  color: var(--color-text);
  font-weight: 600;
}

.last-updated {
  font-style: italic;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: var(--space-lg);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

/* ===================================
   Footer
   =================================== */

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
  text-align: center;
}

.footer-content {
  color: var(--color-text-secondary);
}

.footer-content a {
  color: var(--color-primary);
  text-decoration: none;
}

.footer-content a:hover {
  text-decoration: underline;
}

/* ===================================
   Focus States (Accessibility)
   =================================== */

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===================================
   Responsive Utilities
   =================================== */

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .apps-grid {
    grid-template-columns: 1fr;
  }
}

/* ===================================
   Print Styles
   =================================== */

@media print {
  .site-header, .site-footer, .lang-toggle, .hero-buttons {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}