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

:root {
  /* Colors - Inspired by falecomwendy.com.br */
  --color-primary: #1a1a1a;
  --color-secondary: #2a2a2a;
  --color-tertiary: #3a3a3a;
  --color-accent-yellow: #ffd700;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b0b0b0;
  --color-text-quaternary: #808080;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;

  /* Borders */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-full: 50%;
}

body {
  font-family: var(--font-family);
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
  color: var(--color-text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 480px;
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.spinner {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--color-tertiary);
  border-top-color: var(--color-accent-yellow);
  border-radius: var(--border-radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* Fallback State */
.fallback-state {
  background: var(--color-secondary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl) var(--spacing-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hidden {
  display: none !important;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.icon-circle {
  width: 64px;
  height: 64px;
  background: var(--color-tertiary);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: var(--color-accent-yellow);
}

.icon-circle svg {
  width: 32px;
  height: 32px;
}

h1 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  font-weight: 400;
}

/* Button Group */
.button-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 50px;
  border-radius: var(--border-radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.98);
}

/* Store buttons - unified style with brand colors */
.btn-store {
  background: var(--color-tertiary);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-store:hover {
  background: #4a4a4a;
}

/* Google Play - Official teal/green */
.btn-google {
  border-color: rgba(1, 135, 95, 0.3);
}

.btn-google:hover {
  border-color: rgba(1, 135, 95, 0.6);
  box-shadow: 0 4px 12px rgba(1, 135, 95, 0.2);
}

.btn-google .btn-icon {
  color: #01875F;
}

/* Apple - Official iOS blue */
.btn-apple {
  border-color: rgba(0, 122, 255, 0.3);
}

.btn-apple:hover {
  border-color: rgba(0, 122, 255, 0.6);
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.btn-apple .btn-icon {
  color: #007AFF;
}

/* WhatsApp - Green accent */
.btn-whatsapp {
  border-color: rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  border-color: rgba(37, 211, 102, 0.6);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
}

.btn-whatsapp .btn-icon {
  color: #25D366;
}

.btn-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.btn-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.btn-title {
  font-size: 16px;
  font-weight: 600;
  display: block;
}

.btn-subtitle {
  font-size: 13px;
  opacity: 0.7;
  font-weight: 400;
  display: block;
}

/* Footer */
.footer-text {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-quaternary);
  margin-top: var(--spacing-md);
}

.footer-link {
  color: var(--color-accent-yellow);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.footer-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.footer-link:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Responsive Adjustments */
@media (max-width: 480px) {
  .fallback-state {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  h1 {
    font-size: 20px;
  }

  .subtitle {
    font-size: 14px;
  }

  .btn-title {
    font-size: 15px;
  }

  .btn-subtitle {
    font-size: 12px;
  }
}

@media (min-width: 768px) {
  body {
    padding: var(--spacing-lg);
  }

  .fallback-state {
    padding: var(--spacing-xl);
  }
}

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

/* Focus States for Keyboard Navigation */
.btn:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
}