/* ============================================
   Livra+ Marketing Website - Styles
   Dark Theme (Default)
   ============================================ */

/* CSS Variables - Dark Theme (Default) */
:root {
  /* Core */
  --background: #1F2E2C;
  --surface: #2B3A39;
  --surface-variant: #344443;
  --surface-active: #3D4E4C;
  
  /* Text */
  --text: #F3F1EB;
  --text-secondary: #DCD7CE;
  --text-tertiary: #B8B3AA;
  
  /* Accents */
  --primary: #D8A7A0;
  --primary-light: #E0B5AE;
  --primary-hover: #D0998F;
  --secondary-accent: #D7C47B;
  
  /* States */
  --streak: #D7C47B;
  --border: #3A4A49;
  --error: #C99995;
  --success: #8FBFA0;
  --warning: #D7C47B;
  --overlay: rgba(0, 0, 0, 0.24);
  
  /* Counter colors (for charts/examples) */
  --counter-blue: #3B82F6;
  --counter-purple: #A855F7;
  --counter-green: #10B981;
  --counter-orange: #F97316;
  --counter-red: #EF4444;
  --counter-pink: #EC4899;
  --counter-amber: #F59E0B;
  --counter-teal: #14B8A6;
  --counter-indigo: #6366F1;
  --counter-cyan: #06B6D4;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Light Theme (Optional) */
.theme-light {
  --background: #CDECE5;
  --surface: #FAF9F6;
  --surface-variant: #F5F4F0;
  --surface-active: #F0EFEA;
  --text: #2C3E50;
  --text-secondary: #5A6B77;
  --text-tertiary: #8A95A7;
  --primary: #F4C7C3;
  --primary-light: #F8D4D0;
  --primary-hover: #F0BAB5;
  --secondary-accent: #F8E8A6;
  --streak: #E8956A;
  --border: #E7E3DC;
  --error: #E6B1AE;
  --success: #BFE3C7;
  --warning: #F8E8A6;
  --overlay: rgba(0, 0, 0, 0.06);
}

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

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

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

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

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

a:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

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

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

.section-sm {
  padding: var(--spacing-xl) 0;
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(43, 58, 57, 0.9);
}

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

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

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

.btn-download {
  background-color: var(--primary);
  color: var(--background);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: background-color var(--transition-fast);
  border: none;
  cursor: pointer;
}

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

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  padding: var(--spacing-xs);
  line-height: 1;
}

.menu-toggle:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

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

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  font-size: var(--font-size-base);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: var(--background);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--surface-active);
  color: var(--text);
  border-color: var(--primary);
}

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

/* ============================================
   Cards
   ============================================ */

.card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text);
}

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

/* ============================================
   Badge
   ============================================ */

.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  background-color: var(--secondary-accent);
  color: var(--background);
}

.badge-livra-plus {
  background-color: var(--streak);
  color: var(--background);
}

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

.hero {
  padding: var(--spacing-2xl) 0;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-weight: 400;
}

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

.hero-mockup {
  margin-top: var(--spacing-xl);
  background-color: var(--surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  overflow: hidden;
}

.hero-mockup-comparison {
  display: flex;
  gap: var(--spacing-md);
  width: 100%;
  max-width: 1000px;
  align-items: center;
  justify-content: center;
}

.hero-mockup-comparison img {
  width: 50%;
  height: auto;
  max-height: 600px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.hero-mockup img {
  width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: contain;
  border-radius: var(--radius-md);
}


/* ============================================
   Feature Grid
   ============================================ */

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

.feature-card {
  text-align: center;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background-color: var(--surface-variant);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
}

/* ============================================
   Feature Layout (Alternating)
   ============================================ */

.feature-section {
  margin: var(--spacing-2xl) 0;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-content h3 {
  margin-bottom: var(--spacing-sm);
}

.feature-image {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  overflow: hidden;
}

.feature-image img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: contain;
  border-radius: var(--radius-md);
}


/* ============================================
   Gallery
   ============================================ */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.gallery-item {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery-image {
  width: 100%;
  height: 400px;
  background-color: var(--surface-variant);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  overflow: hidden;
}

.gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-caption {
  padding: var(--spacing-md);
  text-align: center;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  color: var(--text);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--overlay);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

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

.footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

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

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

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

/* ============================================
   Legal Pages
   ============================================ */

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

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

.legal-content li {
  margin-bottom: var(--spacing-xs);
}

/* ============================================
   Support/Verification Page
   ============================================ */

.support-content {
  max-width: 700px;
  margin: 0 auto;
}

.support-card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--border);
}

.support-info {
  margin-bottom: var(--spacing-md);
}

.support-info dt {
  font-weight: 600;
  color: var(--text);
  margin-top: var(--spacing-sm);
}

.support-info dd {
  color: var(--text-secondary);
  margin-left: var(--spacing-md);
}

/* ============================================
   404 Page
   ============================================ */

.error-page {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
}

.error-message {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--surface);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 99;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-links li {
    width: 100%;
  }
  
  .nav-links a {
    display: block;
    padding: var(--spacing-sm);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .hero-mockup-comparison {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .hero-mockup-comparison img {
    width: 100%;
    max-width: 400px;
  }
  
  .feature-row {
    grid-template-columns: 1fr;
  }
  
  .feature-row.reverse {
    direction: ltr;
  }
  
  .gallery {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: var(--font-size-4xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .error-code {
    font-size: 4rem;
  }
}

/* ============================================
   Accessibility
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}