/* CSS Custom Properties (Design Tokens) */
:root {
  --color-cream: #f5efe6;
  --color-beige: #e8dcc5;
  --color-warm: #d4c5a9;
  --color-text: #3e3e3e;

  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: rgba(0, 0, 0, 0.1);

  --radius-lg: 20px;
  --radius-md: 12px;
  --spacing-base: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  /* Background images set via pseudo-elements in respective HTML files */
  padding: 1rem var(--spacing-base);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* Main Invitation Container */
.invitation {
  max-width: 500px;
  width: 100%;
  margin: 0;
  padding: 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px var(--glass-shadow);
}

.invitation__title {
  font-size: 1.75rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 2rem;
  letter-spacing: -0.5px;
}

/* Timeline Container */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Timeline Items */
.timeline__item {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: 0 4px 16px var(--glass-shadow);
  transition: all 0.3s ease;
}

.timeline__item:hover {
  background: rgba(255, 255, 255, 0.35);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--glass-shadow);
}

.timeline__item--highlight {
  background: rgba(255, 255, 255, 0.4);
  border-color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
}

.timeline__time {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.timeline__event {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-text);
  margin: 0;
}

/* Mobile-First Responsive */
@media (max-width: 640px) {
  body {
    padding: 1rem;
  }

  .invitation {
    margin: 1rem auto;
    padding: 1.5rem;
  }

  .invitation__title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .timeline__item {
    padding: 1rem;
  }

  .timeline__time {
    font-size: 0.8125rem;
  }

  .timeline__event {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 0.5rem;
  }

  .invitation {
    padding: 1.25rem;
    border-radius: 16px;
  }

  .invitation__title {
    font-size: 1.375rem;
    margin-bottom: 1.25rem;
  }

  .timeline {
    gap: 0.75rem;
  }

  .timeline__item {
    padding: 0.875rem;
    border-radius: 10px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .timeline__item {
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-cream: #2a2520;
    --color-beige: #3d3530;
    --color-warm: #4a4238;
    --color-text: #f5f1ed;
    --glass-shadow: rgba(0, 0, 0, 0.3);
  }

  .timeline__item:hover {
    background: rgba(255, 255, 255, 0.1);
  }
}

/* Print styles */
@media print {
  body {
    padding: 0;
    background: white;
  }

  .invitation {
    box-shadow: none;
    background: white;
    border: 1px solid #ddd;
  }
}