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

:root {
  /* Light Theme Colors (matching app) */
  --primary-bg: #FFFFFF;
  --primary-text: #000000;
  --secondary-bg: #E0E6D3;
  --secondary-text: #333333;
  --accent-green: #6E8B3D;
  --accent-green-hover: #5a7230;
  --container-color: #F4F4F0;
  --card-bg: #EFEFEF;
  --secondary-container: #E0E6D3;
  --light-accent: #FAFBF7;
  
  /* Dark Theme Colors */
  --dark-primary-bg: #0F0F0F;
  --dark-primary-text: #FFFFFF;
  --dark-secondary-bg: #333333;
  --dark-secondary-text: #CCCCCC;
  --dark-accent-green: #B1FB98;
  --dark-container-color: #1f1f1f;
  --dark-card-bg: #262626;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--primary-bg);
  color: var(--primary-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  body {
    background-color: var(--dark-primary-bg);
    color: var(--dark-primary-text);
  }
  
  .container {
    background-color: var(--dark-primary-bg);
  }
  
  .hero {
    background: linear-gradient(180deg, var(--dark-primary-bg) 0%, var(--dark-container-color) 100%);
  }
  
  .logo {
    color: var(--dark-primary-text);
  }
  
  .tagline {
    color: var(--dark-secondary-text);
  }
  
  .main-heading {
    color: var(--dark-primary-text);
  }
  
  .subheading {
    color: var(--dark-secondary-text);
  }
  
  .screenshot-card {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-secondary-bg);
  }
  
  .feature-card {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-secondary-bg);
  }
  
  .feature-card h3 {
    color: var(--dark-primary-text);
  }
  
  .feature-card p {
    color: var(--dark-secondary-text);
  }
  
  .waitlist-container {
    background-color: var(--dark-container-color);
    border-color: var(--dark-secondary-bg);
  }
  
  .waitlist-container h2 {
    color: var(--dark-primary-text);
  }
  
  .waitlist-description {
    color: var(--dark-secondary-text);
  }
  
  .email-input {
    background-color: var(--dark-card-bg);
    color: var(--dark-primary-text);
    border-color: var(--dark-secondary-bg);
  }
  
  .email-input:focus {
    border-color: var(--dark-accent-green);
  }
  
  .email-input::placeholder {
    color: var(--dark-secondary-text);
  }
  
  .footer {
    color: var(--dark-secondary-text);
  }
  
  .footer a {
    color: var(--dark-accent-green);
  }
  
  .privacy-note {
    color: var(--dark-secondary-text);
  }
  
  .success-message {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-accent-green);
  }
  
  .success-message h3 {
    color: var(--dark-primary-text);
  }
  
  .success-message p {
    color: var(--dark-secondary-text);
  }
  
  .error-message {
    background-color: var(--dark-card-bg);
    border-color: #FF6347;
  }
  
  .error-message p {
    color: var(--dark-secondary-text);
  }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  width: 100%;
  box-sizing: border-box;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(180deg, var(--primary-bg) 0%, var(--light-accent) 100%);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-xl);
  width: 100%;
  box-sizing: border-box;
}

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

.logo {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

.tagline {
  font-size: 1.25rem;
  color: var(--secondary-text);
  font-weight: 400;
  margin-top: var(--spacing-xs);
}

.main-heading {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--primary-text);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.subheading {
  font-size: 1.125rem;
  color: var(--secondary-text);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
}

/* Screenshots Preview */
.screenshots-preview {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  width: 100%;
  box-sizing: border-box;
}

.screenshot-card {
  background-color: var(--card-bg);
  border: 1px solid var(--secondary-container);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  max-width: 200px;
  width: 100%;
  box-sizing: border-box;
  flex-shrink: 0;
}

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

.screenshot {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
  max-width: 100%;
  object-fit: contain;
}

/* Features Section */
.features {
  margin-bottom: var(--spacing-xl);
  width: 100%;
  box-sizing: border-box;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  width: 100%;
  box-sizing: border-box;
}

.feature-card {
  background-color: var(--card-bg);
  border: 1px solid var(--secondary-container);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  width: 100%;
  box-sizing: border-box;
}

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

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

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-text);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--secondary-text);
  line-height: 1.6;
}

/* Waitlist Section */
.waitlist-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  width: 100%;
  box-sizing: border-box;
  padding: 0 var(--spacing-sm);
}

.waitlist-container {
  background-color: var(--container-color);
  border: 1px solid var(--secondary-container);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 600px;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
  margin: 0 auto;
}

.waitlist-container h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary-text);
  margin-bottom: var(--spacing-md);
}

.waitlist-description {
  font-size: 1rem;
  color: var(--secondary-text);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.waitlist-form {
  margin-bottom: var(--spacing-md);
  width: 100%;
  box-sizing: border-box;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  width: 100%;
  box-sizing: border-box;
}

.email-input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
  border: 2px solid var(--secondary-container);
  border-radius: var(--radius-md);
  background-color: var(--primary-bg);
  color: var(--primary-text);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.email-input:focus {
  outline: none;
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(110, 139, 61, 0.1);
}

.email-input::placeholder {
  color: var(--secondary-text);
}

.submit-btn {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
  background-color: var(--accent-green);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: inherit;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.submit-btn:hover:not(:disabled) {
  background-color: var(--accent-green-hover);
  transform: translateY(-1px);
}

.submit-btn:active:not(:disabled) {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-loader {
  display: inline-block;
}

.privacy-note {
  font-size: 0.875rem;
  color: var(--secondary-text);
  margin-top: var(--spacing-md);
  line-height: 1.5;
}

/* Success Message */
.success-message {
  background-color: var(--card-bg);
  border: 2px solid var(--accent-green);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  animation: fadeIn 0.3s ease;
}

.success-icon {
  width: 64px;
  height: 64px;
  background-color: var(--accent-green);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
  margin: 0 auto var(--spacing-md);
}

.success-message h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-text);
  margin-bottom: var(--spacing-sm);
}

.success-message p {
  font-size: 1rem;
  color: var(--secondary-text);
  line-height: 1.6;
}

/* Error Message */
.error-message {
  background-color: var(--card-bg);
  border: 2px solid #FF6347;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  animation: fadeIn 0.3s ease;
}

.error-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.error-message p {
  font-size: 1rem;
  color: var(--secondary-text);
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--secondary-text);
  font-size: 0.9375rem;
  width: 100%;
  box-sizing: border-box;
  margin-top: auto;
}

.footer a {
  color: var(--accent-green);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--accent-green-hover);
  text-decoration: underline;
}

.footer-tagline {
  margin-top: var(--spacing-xs);
  font-style: italic;
  font-size: 0.875rem;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: var(--spacing-md);
  }
  
  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
    border-radius: var(--radius-lg);
  }
  
  .logo {
    font-size: 3rem;
  }
  
  .main-heading {
    font-size: 2rem;
  }
  
  .subheading {
    font-size: 1rem;
  }
  
  .screenshots-preview {
    gap: var(--spacing-sm);
  }
  
  .screenshot-card {
    max-width: 150px;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .waitlist-container {
    padding: var(--spacing-lg);
    margin: 0 var(--spacing-sm);
  }
  
  .waitlist-container h2 {
    font-size: 1.75rem;
  }
  
  .form-group {
    flex-direction: column;
  }
  
  .email-input,
  .submit-btn {
    font-size: 0.9375rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: var(--spacing-sm);
  }
  
  .hero {
    padding: var(--spacing-lg) var(--spacing-sm);
    border-radius: var(--radius-md);
  }
  
  .logo {
    font-size: 2.5rem;
  }
  
  .main-heading {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .subheading {
    font-size: 0.9375rem;
  }
  
  .screenshot-card {
    max-width: 120px;
    padding: var(--spacing-xs);
  }
  
  .waitlist-container {
    padding: var(--spacing-md);
    margin: 0 var(--spacing-xs);
  }
  
  .waitlist-container h2 {
    font-size: 1.5rem;
  }
  
  .feature-card {
    padding: var(--spacing-md);
  }
  
  .email-input,
  .submit-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
  }
}