/* Main Stylesheet for Wedding Website */

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

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

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

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);
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

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

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

.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
}

.section-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
}

/* ============================================================================
   Navigation
   ========================================================================= */

.nav {
  background: var(--color-background);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

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

.nav-brand {
  font-family: var(--font-accent);
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

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

.nav-link {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: var(--color-background-alt);
  text-decoration: none;
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-background-alt);
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: background var(--transition-base);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* Mobile Navigation Menu */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-background);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    gap: 0;
  }

  .nav-menu.active {
    max-height: 500px;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md);
    text-align: center;
  }
}

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

.hero {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  color: white;
  text-align: center;
  padding: var(--spacing-4xl) var(--spacing-md);
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  max-width: var(--container-md);
}

.hero-title {
  font-family: var(--font-accent);
  font-size: var(--font-size-6xl);
  color: white;
  margin-bottom: var(--spacing-sm);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--spacing-xl);
  font-style: italic;
}

.hero-date {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.hero-location {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2xl);
}

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

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

.page-header {
  background: var(--color-background-alt);
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-md);
}

.page-title {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.page-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  margin-bottom: 0;
}

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

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary {
  background: transparent;
  color: white;
  border-color: white;
}

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

.btn-small {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

/* ============================================================================
   Cards & Grids
   ========================================================================= */

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

.info-card {
  background: var(--color-background-alt);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.info-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.info-text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

/* ============================================================================
   Timeline
   ========================================================================= */

.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 80px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.timeline-time {
  min-width: 80px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-align: right;
}

.timeline-content {
  flex: 1;
  padding: var(--spacing-md);
  background: var(--color-background-alt);
  border-radius: var(--radius-md);
  position: relative;
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -8px;
  top: var(--spacing-md);
  width: 16px;
  height: 16px;
  background: var(--color-secondary);
  border-radius: 50%;
  border: 3px solid var(--color-background);
  box-shadow: 0 0 0 2px var(--color-border);
}

.timeline-content h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.timeline-content p {
  margin: 0;
  color: var(--color-text-light);
}

/* ============================================================================
   Venue Section
   ========================================================================= */

.venue-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-xl);
}

.venue-card {
  background: var(--color-background-alt);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.venue-card h3 {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.venue-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.venue-address {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
}

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

.rsvp-form {
  max-width: 600px;
  margin: var(--spacing-xl) auto;
  background: var(--color-background-alt);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: var(--font-body);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
  background: var(--color-background);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--color-error);
}

.form-error {
  display: block;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-md);
  background: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.radio-label:hover {
  border-color: var(--color-primary-light);
}

.radio-label input[type="radio"] {
  cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.form-actions {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* ============================================================================
   Messages
   ========================================================================= */

.message {
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

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

.message p {
  margin: 0;
}

.message-success {
  background: rgba(76, 175, 80, 0.1);
  border: 2px solid var(--color-success);
  color: var(--color-success);
}

.message-error {
  background: rgba(244, 67, 54, 0.1);
  border: 2px solid var(--color-error);
  color: var(--color-error);
}

/* ============================================================================
   Photos Page
   ========================================================================= */

.photos-placeholder {
  background: var(--color-background-alt);
  padding: var(--spacing-3xl) var(--spacing-lg);
  border-radius: var(--radius-lg);
}

.placeholder-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.placeholder-icon {
  font-size: 80px;
  margin-bottom: var(--spacing-lg);
}

.placeholder-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
}

.placeholder-features {
  text-align: left;
  margin: var(--spacing-2xl) auto;
  max-width: 400px;
}

.placeholder-features h3 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.placeholder-features ul {
  list-style: none;
}

.placeholder-features li {
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-lg);
}

.placeholder-note {
  font-style: italic;
  color: var(--color-text-light);
  margin-top: var(--spacing-xl);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.photo-placeholder {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-background-alt) 0%, var(--color-border) 100%);
  border-radius: var(--radius-md);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

.footer {
  background: var(--color-primary);
  color: white;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  margin-top: auto;
}

.footer p {
  margin-bottom: var(--spacing-sm);
}

.footer a {
  color: var(--color-secondary-light);
}

.footer a:hover {
  color: white;
}

/* ============================================================================
   Responsive Adjustments
   ========================================================================= */

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .timeline::before {
    left: 60px;
  }

  .timeline-time {
    min-width: 60px;
    font-size: var(--font-size-sm);
  }

  .rsvp-form {
    padding: var(--spacing-lg);
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

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

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

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

.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;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}