/* CSS Custom Properties for Dark Theme */
:root {
  /* Dark theme colors from technical architecture */
  --primary-bg: #1a1a1a;
  --secondary-bg: #2d2d2d;
  --accent-bg: #3d2914;
  --text-primary: #f5f1e8;
  --text-secondary: #b8b8b8;
  --accent-gold: #d4af37;
  --accent-copper: #b87333;
  --accent-forest: #2d4a2b;
  --accent-blue: #3b82f6;
  
  /* Additional colors */
  --border-color: #404040;
  --hover-bg: #353535;
  --success-color: #4caf50;
  --error-color: #f44336;
  --warning-color: #ff9800;
  
  /* Animation timings */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.8s ease;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Georgia', serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Container widths */
  --container-max: 1200px;
  --container-padding: 2rem;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

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

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

a:hover {
  color: var(--accent-copper);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Sections */
section {
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-copper));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Navigation */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-medium);
}

.main-nav.scrolled {
  background: rgba(26, 26, 26, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

.nav-logo img {
  height: 40px;
  width: auto;
  transition: transform var(--transition-fast);
}

.nav-logo img:hover {
  transform: scale(1.05);
}

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

.nav-link {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 6px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-gold);
  background: rgba(212, 175, 55, 0.1);
}

/* Remove default focus ring; use underline instead */
.nav-link:focus,
.nav-link:focus-visible {
  outline: none;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav-link.active::after {
  width: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 2px 0;
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--accent-bg) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../assets/images/wood-texture.jpg') center/cover;
  opacity: 0.1;
  z-index: 1;
}

.particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.hero-content {
  text-align: center;
  z-index: 3;
  max-width: 800px;
  padding: 0 var(--container-padding);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-copper), var(--text-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-weight: 300;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-copper));
  color: var(--primary-bg);
  font-weight: 600;
  font-size: 1.1rem;
  border-radius: 50px;
  transition: all var(--transition-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
  color: var(--primary-bg);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border-right: 2px solid var(--accent-gold);
  border-bottom: 2px solid var(--accent-gold);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% {
    transform: rotate(45deg) translateY(0);
  }
  40% {
    transform: rotate(45deg) translateY(-10px);
  }
  60% {
    transform: rotate(45deg) translateY(-5px);
  }
}

/* About Section */
.about {
  background: var(--secondary-bg);
}

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

.about-card {
  background: var(--primary-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-medium);
}

.about-card:hover {
  transform: translateY(-8px);
}

.card-image {
  height: 200px;
  overflow: hidden;
  contain: paint;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  will-change: transform;
}

.about-card:hover .card-image img {
  transform: scale(1.1);
}

.card-content {
  padding: var(--spacing-lg);
}

.card-content h3 {
  color: var(--accent-gold);
  margin-bottom: var(--spacing-sm);
}

/* Quality Section */
.quality {
  background: var(--primary-bg);
}

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

.quality-card {
  background: var(--secondary-bg);
  padding: var(--spacing-xl);
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 320px;
}

.quality-card::before {
  content: none;
}

.quality-card:hover::before { }

.card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-lg);
  color: var(--accent-gold);
}

.card-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.5;
}

.quality-card h3 {
  color: var(--accent-gold);
  margin-bottom: var(--spacing-sm);
}

.quality-meter {
  display: none;
}

.meter-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-copper));
  border-radius: 4px;
  width: 0;
  transition: width var(--transition-slow);
}

/* Moon Wood Section */
.moonwood {
  background: var(--accent-bg);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent-gold);
  transform: translateX(-50%);
}

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

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
  background: var(--primary-bg);
  border: 3px solid var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.moon-phase {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  position: relative;
}

.new-moon {
  background: var(--primary-bg);
  border: 2px solid var(--text-secondary);
}

.waxing-moon {
  background: linear-gradient(90deg, var(--primary-bg) 50%, var(--accent-gold) 50%);
}

.full-moon {
  background: var(--accent-gold);
}

.waning-moon {
  background: linear-gradient(90deg, var(--accent-gold) 50%, var(--primary-bg) 50%);
}

.timeline-content {
  flex: 1;
  background: var(--secondary-bg);
  padding: var(--spacing-lg);
  border-radius: 12px;
  margin: 0 var(--spacing-xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  position: relative;
}

.timeline-content h3 {
  color: var(--accent-gold);
  margin-bottom: var(--spacing-xs);
}

.timeline-date {
  color: var(--accent-copper);
  font-weight: 600;
  font-size: 0.9rem;
}

/* Features Section */
.features {
  background: var(--secondary-bg);
}

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

.accordion-item {
  background: var(--primary-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: var(--spacing-lg);
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.accordion-header:hover {
  background: var(--hover-bg);
  color: var(--accent-gold);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  position: relative;
  transition: transform var(--transition-fast);
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: currentColor;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  transition: all var(--transition-fast);
}

.accordion-icon::after {
  transform: translateY(-50%) rotate(90deg);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium), padding var(--transition-medium);
}

.accordion-header[aria-expanded="true"] + .accordion-content {
  max-height: 500px;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.accordion-content ul {
  list-style: none;
  padding: 0;
}

.accordion-content li {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--border-color);
}

.accordion-content li:last-child {
  border-bottom: none;
}

.accordion-content strong {
  color: var(--accent-gold);
}

/* Contact Section */
.contact {
  background: var(--primary-bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--secondary-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.info-item:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.info-icon {
  width: 40px;
  height: 40px;
  color: var(--accent-gold);
  flex-shrink: 0;
}

.info-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.5;
}

.info-text h3 {
  color: var(--accent-gold);
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.info-text p {
  margin: 0;
  color: var(--text-primary);
}

/* Contact Form */
.contact-form {
  background: var(--secondary-bg);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--primary-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

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

.error-message {
  display: block;
  color: var(--error-color);
  font-size: 0.9rem;
  margin-top: 0.25rem;
  min-height: 1.2rem;
}

.submit-btn {
  width: 100%;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-copper));
  color: var(--primary-bg);
  border: none;
  border-radius: 6px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3);
}

.submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-text,
.btn-loading {
  display: block;
  transition: opacity var(--transition-fast);
}

.submit-btn.loading .btn-text {
  opacity: 0;
}

.submit-btn.loading .btn-loading {
  opacity: 1;
}

.btn-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
}

.form-feedback {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: 6px;
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-feedback.success {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
  display: block;
}

.form-feedback.error {
  background: rgba(244, 67, 54, 0.1);
  color: var(--error-color);
  border: 1px solid var(--error-color);
  display: block;
}

/* Footer */
.footer {
  background: var(--secondary-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-logo img {
  height: 40px;
  margin-bottom: var(--spacing-sm);
}

.footer-logo p {
  color: var(--text-secondary);
  max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--accent-gold);
  margin-bottom: var(--spacing-sm);
}

.footer-links ul {
  list-style: none;
  padding: 0;
}

.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(--accent-gold);
}

.footer-contact p {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-gold {
  color: var(--accent-gold);
}

.text-copper {
  color: var(--accent-copper);
}

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

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

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

.hidden {
  display: none;
}

.visible {
  display: block;
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  transform: translate(-50%, -50%);
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}