/* ============================================
   TRANSPARENT INTELLIGENCE - FUTURISTIC DESIGN
   Personal Library Archiving Website
   ============================================ */

:root {
  /* Colors - Transparent Intelligence Theme */
  --color-bg-primary: #0A0E14;
  --color-bg-secondary: #050505;
  --color-accent-cyan: #00F2FF;
  --color-accent-green: #39FF14;
  --color-text-primary: #C0C0C0;
  --color-text-secondary: #FFFFFF;
  --color-glass: rgba(255, 255, 255, 0.05);
  --color-glass-border: rgba(0, 242, 255, 0.3);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Border & Effects */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows & Glows */
  --glow-cyan: 0 0 20px rgba(0, 242, 255, 0.5);
  --glow-green: 0 0 20px rgba(57, 255, 20, 0.5);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

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

body {
  font-family: var(--font-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-secondary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--space-md);
  font-size: clamp(0.9rem, 2vw, 1.1rem);
}

a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  transition: all var(--transition-normal);
}

a:hover {
  color: whitesmoke;
  text-shadow: var(--glow-green);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(10, 14, 20, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-glass-border);
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.brand-name {
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  color: var(--color-text-secondary);
  text-shadow: var(--glow-cyan);
}

.main-nav {
  display: flex;
  align-items: center;
  list-style: none;
}

.main-nav a {
  font-size: clamp(0.875rem, 2vw, 1rem);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.main-nav a:hover {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
}

/* Burger Menu Button */
.burger-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
  z-index: 11;
  transition: all var(--transition-normal);
  order: 999;
}

.burger-toggle:hover {
  background: var(--color-glass);
  box-shadow: var(--glow-cyan);
}

.burger-toggle.active {
  background: var(--color-glass);
  border-color: var(--color-accent-cyan);
}

/* Mobile Navigation Menu */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: rgba(5, 5, 5, 0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--color-glass-border);
  z-index: 9999;
  padding: var(--space-xxl) var(--space-lg);
  transition: right var(--transition-normal);
  overflow-y: auto;
}

.mobile-nav.active {
  right: 0;
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.mobile-nav-list a {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  font-size: 1.1rem;
}

.mobile-nav-list a:hover {
  background: var(--color-glass);
  border-color: var(--color-glass-border);
  padding-left: var(--space-lg);
}

.mobile-nav-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: transparent;
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-close:hover {
  background: var(--color-glass);
  box-shadow: var(--glow-cyan);
}

/* Responsive Header */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  
  .burger-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: var(--space-md);
  }
  
  .mobile-nav {
    max-width: 100%;
  }
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
  flex: 1;
  width: 100%;
}

/* ============================================
   HERO BANNER (Full-Width)
   ============================================ */

.hero-banner {
  position: relative;
  width: 100vw;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
}

.hero-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 242, 255, 0.1), rgba(57, 255, 20, 0.1));
  z-index: 1;
}

.hero-banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.hero-content h1 {
  margin-bottom: var(--space-lg);
  text-shadow: 0 0 30px rgba(0, 242, 255, 0.8);
}

.hero-content p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  max-width: 800px;
  margin: 0 auto var(--space-xl);
  color: var(--color-text-primary);
}

/* ============================================
   SECTION STYLES
   ============================================ */

.content-section {
  padding: var(--space-xxl) var(--space-lg);
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xxl);
  width: 100%;
  max-width: 1000px;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: var(--space-md);
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent-cyan), transparent);
  box-shadow: var(--glow-cyan);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid-container {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  width: 100%;
  max-width: 1200px;
  justify-items: center;
}

.grid-two {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-three {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-four {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-item {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 400px;
}

.grid-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.grid-item:hover::before {
  left: 100%;
}

.grid-item:hover {
  border-color: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-5px);
}

.grid-item-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  opacity: 0.8;
  transition: opacity var(--transition-normal);
  display: block;
}

.grid-item:hover .grid-item-image {
  opacity: 1;
}

.grid-item h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-accent-cyan);
}

.grid-item p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ============================================
   BANNER SECTIONS (Image Under Text)
   ============================================ */

.banner-section {
  position: relative;
  width: 100vw;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: var(--space-xxl) calc(-50vw + 50%);
  padding: var(--space-xxl) var(--space-lg);
}

.banner-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 14, 20, 0.85);
  z-index: 1;
}

.banner-section-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  z-index: 0;
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
}

.banner-content h2 {
  margin-bottom: var(--space-lg);
}

.banner-content p {
  font-size: clamp(1rem, 2vw, 1.15rem);
}

/* ============================================
   CONTACT FORM
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: var(--space-xl) auto;
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
  background: rgba(255, 255, 255, 0.08);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
  cursor: pointer;
}

.checkbox-group label {
  margin-bottom: 0;
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-submit {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-green));
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 10px;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-green);
}

/* ============================================
   GOOGLE MAPS
   ============================================ */

.map-container {
  width: 100%;
  max-width: 800px;
  margin: var(--space-xl) auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-glass-border);
  box-shadow: var(--shadow-glass);
}

.map-container iframe {
  width: 100%;
  height: 400px;
  border: none;
  display: block;
}

/* ============================================
   PRODUCTS GRID
   ============================================ */

.product-card {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

.product-card:hover {
  border-color: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-5px);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-green);
  margin: var(--space-md) 0;
  font-family: var(--font-mono);
}

/* ============================================
   TIMELINE (Process Page)
   ============================================ */

.timeline {
  position: relative;
  max-width: 900px;
  margin: var(--space-xl) auto;
  padding: var(--space-xl) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-cyan), var(--color-accent-green));
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xxl);
  width: 45%;
  padding: var(--space-lg);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 55%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--color-accent-cyan);
  border-radius: 50%;
  top: var(--space-lg);
  box-shadow: var(--glow-cyan);
}

.timeline-item:nth-child(odd)::before {
  right: -35px;
}

.timeline-item:nth-child(even)::before {
  left: -35px;
}

.timeline-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
  color: var(--color-accent-cyan);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: rgba(5, 5, 5, 0.9);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-glass-border);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section h4 {
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--space-sm);
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-text-primary);
}

.footer-nav a:hover {
  color: var(--color-accent-green);
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-glass-border);
  font-size: 0.85rem;
  color: var(--color-text-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--space-lg);
}

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

.date {
  color: var(--color-text-primary);
  font-size: 0.9rem;
  font-style: italic;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 1024px) {
  .grid-three {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .grid-four {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-banner {
    min-height: 50vh;
  }
  
  .content-section {
    padding: var(--space-xl) var(--space-md);
  }
  
  .banner-section {
    min-height: 300px;
    padding: var(--space-xl) var(--space-md);
  }
  
  .grid-two,
  .grid-three,
  .grid-four {
    grid-template-columns: 1fr;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    width: calc(100% - 60px);
    left: 60px !important;
  }
  
  .timeline-item::before {
    left: -35px !important;
  }
  
  .contact-form {
    padding: var(--space-lg);
  }
  
  .map-container iframe {
    height: 300px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .hero-banner {
    min-height: 40vh;
  }
  
  .content-section {
    padding: var(--space-lg) var(--space-md);
  }
  
  .banner-section {
    min-height: 250px;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }
  
  .site-header {
    padding: var(--space-sm);
  }
  
  .hero-content {
    padding: var(--space-lg) var(--space-md);
  }
}

/* ============================================
   SPECIAL PAGES
   ============================================ */

.centered-content {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.centered-box {
  max-width: 600px;
  text-align: center;
}

.success-icon {
  font-size: 5rem;
  color: var(--color-accent-green);
  margin-bottom: var(--space-lg);
}

.error-code {
  font-size: 8rem;
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-md);
}

.btn-link {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  max-width: 300px;
}

.policy-content {
  max-width: 900px;
  margin: 0 auto;
}

.policy-item {
  margin-bottom: var(--space-lg);
}

.policy-item ul {
  margin-left: var(--space-lg);
  margin-top: var(--space-md);
}

.large-text {
  font-size: 1.1rem;
}

.mb-xl {
  margin-bottom: var(--space-xl);
}

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