/* ============================================
   BOOK COLLECTION MANAGEMENT - DATA RIBBON STYLE
   Futuristic Archival Interface Design
   ============================================ */

:root {
  /* Color Palette - Data Ribbon Theme */
  --color-inkwell: #020205;
  --color-paper: #D1D1D1;
  --color-pulse: #8A2BE2;
  --color-lumen: #FFD700;
  --color-bg: #0a0a0f;
  --color-surface: #151520;
  --color-border: rgba(138, 43, 226, 0.2);
  
  /* Typography */
  --font-primary: 'Space Mono', 'Courier New', monospace;
  --font-secondary: 'Inter', sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Layout */
  --container-max: 1400px;
  --section-padding: var(--space-3xl) var(--space-lg);
  --border-radius: 8px;
  --border-radius-lg: 16px;
  
  /* Effects */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --shadow-glow: 0 0 20px rgba(138, 43, 226, 0.3);
  --shadow-lumen: 0 0 30px rgba(255, 215, 0, 0.4);
  --blur-glass: blur(10px);
}

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

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

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

body {
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-paper);
  background-color: var(--color-inkwell);
  overflow-x: hidden;
  position: relative;
}

/* Deep-Z Scroll Effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(138, 43, 226, 0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-paper);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, var(--font-size-3xl));
  background: linear-gradient(135deg, var(--color-paper) 0%, var(--color-pulse) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(1.5rem, 4vw, var(--font-size-2xl));
  color: var(--color-pulse);
}

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

p {
  margin-bottom: var(--space-md);
  color: var(--color-paper);
  opacity: 0.9;
}

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

a:hover {
  color: var(--color-lumen);
}

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

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.brand-text {
  font-family: var(--font-primary);
  font-size: clamp(0.7rem, 2vw, 1.25rem);
  font-weight: 700;
  color: var(--color-lumen);

}

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

.nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-paper);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-link:hover {
  color: var(--color-pulse);
  background: rgba(138, 43, 226, 0.1);
}

/* Burger Menu Button - Always Last in Header */
.burger-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-pulse);
  color: var(--color-pulse);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  border-radius: var(--border-radius);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
  order: 999;
}

.burger-toggle:hover {
  background: var(--color-pulse);
  color: var(--color-inkwell);
}

.burger-toggle.active {
  background: var(--color-pulse);
  color: var(--color-inkwell);
}

/* Mobile Navigation Menu - Opens Separately */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--color-surface);
  border-left: 2px solid var(--color-pulse);
  padding: var(--space-2xl) var(--space-lg);
  z-index: 999;
  transition: right var(--transition-base);
  overflow-y: auto;
}

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

.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 2, 5, 0.8);
  z-index: 998;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.mobile-nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

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

.mobile-nav-link {
  color: var(--color-paper);
  font-size: var(--font-size-lg);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  display: block;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-pulse);
  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-pulse);
  color: var(--color-pulse);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--font-size-xl);
  transition: all var(--transition-fast);
}

.mobile-nav-close:hover {
  background: var(--color-pulse);
  color: var(--color-inkwell);
}

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

@media (max-width: 768px) {
  .header-container {
    padding: 0;
  }
  
  .brand-text {
    font-size: 0.7rem;
  }
}

/* ============================================
   MAIN CONTENT & SECTIONS
   ============================================ */

main {
  position: relative;
  z-index: 1;
}

.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--section-padding);
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Full-Width Banner Sections */
.banner-section {
  width: 100vw;
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 0 calc(-50vw + 50%);
}

.banner-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  z-index: 0;
  filter: blur(1px);
}

.banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-2xl);
  max-width: 900px;
  margin: 0 auto;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(138, 43, 226, 0.2);
}

.banner-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  text-shadow: 2px 2px 8px rgba(2, 2, 5, 0.8), 0 0 30px rgba(138, 43, 226, 0.5);
  position: relative;
  z-index: 3;
}

.banner-text {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.8;
  opacity: 0.95;
  text-shadow: 1px 1px 4px rgba(2, 2, 5, 0.6);
  position: relative;
  z-index: 3;
}

/* Content Sections */
.content-section {
  padding: var(--space-3xl) 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
  position: relative;
  width: 100%;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: var(--color-pulse);
  box-shadow: var(--shadow-glow);
}

/* Grid Layouts */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.grid-item {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.grid-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(138, 43, 226, 0.1), transparent);
  transition: left var(--transition-slow);
}

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

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

.grid-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  opacity: 0.9;
  transition: opacity var(--transition-base);
}

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

.grid-title {
  color: var(--color-pulse);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-lg);
  text-align: center;
}

.grid-text {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  opacity: 0.85;
  text-align: left;
  flex-grow: 1;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.column-image {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  opacity: 0.8;
  transition: opacity var(--transition-base);
}

.column-image:hover {
  opacity: 1;
}

.column-content {
  padding: var(--space-lg);
}

/* ============================================
   BUTTONS & CTAs
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: transparent;
  border: 2px solid var(--color-pulse);
  color: var(--color-pulse);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
  cursor: pointer;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  text-align: center;
  margin-top: 10px;
}

.btn:hover {
  background: var(--color-pulse);
  color: var(--color-inkwell);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-pulse);
  color: var(--color-inkwell);
}

.btn-primary:hover {
  background: var(--color-lumen);
  border-color: var(--color-lumen);
  color: var(--color-inkwell);
}

.btn-lumen {
  border-color: var(--color-lumen);
  color: var(--color-lumen);
}

.btn-lumen:hover {
  background: var(--color-lumen);
  color: var(--color-inkwell);
}

/* ============================================
   FORMS
   ============================================ */

.form-container {
  max-width: 600px;
  margin: var(--space-xl) auto;
  background: var(--color-surface);
  padding: var(--space-2xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-pulse);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-inkwell);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-paper);
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-pulse);
  box-shadow: 0 0 0 3px rgba(138, 43, 226, 0.1);
}

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

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

.checkbox-input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-pulse);
}

.checkbox-label {
  font-size: var(--font-size-sm);
  line-height: 1.5;
  color: var(--color-paper);
  opacity: 0.9;
}

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

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
}

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

.product-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
}

.product-title {
  color: var(--color-lumen);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
}

.product-description {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  opacity: 0.85;
}

.product-price {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  color: var(--color-pulse);
  font-weight: 700;
}

/* ============================================
   MAP
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-top: var(--space-xl);
  border: 1px solid var(--color-border);
}

.map-iframe {
  width: 100%;
  height: 100%;
  border: none;
}

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

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-3xl);
}

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

.footer-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-title {
  color: var(--color-pulse);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--space-sm);
}

.footer-link {
  color: var(--color-paper);
  font-size: var(--font-size-sm);
  opacity: 0.8;
  transition: all var(--transition-fast);
}

.footer-link:hover {
  opacity: 1;
  color: var(--color-pulse);
  padding-left: var(--space-sm);
}

.footer-text {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  line-height: 1.6;
}

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

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

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

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

.date {
  font-size: var(--font-size-sm);
  color: var(--color-pulse);
  opacity: 0.8;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .two-column {
    grid-template-columns: 1fr;
  }
  
  .section-container {
    padding: var(--space-xl) var(--space-md);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: var(--space-xl) var(--space-md);
  }
  
  .banner-section {
    min-height: 50vh;
  }
  
  .banner-content {
    padding: var(--space-lg);
  }
  
  .grid-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .form-container {
    padding: var(--space-lg);
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .banner-section {
    min-height: 40vh;
  }
  
  .banner-title {
    font-size: 1.75rem;
  }
  
  .section-container {
    padding: var(--space-lg) var(--space-sm);
  }
}

/* ============================================
   ANIMATIONS & EFFECTS
   ============================================ */

@keyframes pulse-glow {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.pulse-effect {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes scan-line {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.scan-line {
  position: relative;
  overflow: hidden;
}

.scan-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-pulse), transparent);
  animation: scan-line 3s linear infinite;
}

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

.error-page,
.thank-you-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl);
}

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-pulse);
  font-family: var(--font-primary);
  margin-bottom: var(--space-lg);
}

.legal-content {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-2xl) 0;
}

.legal-content h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal-content p {
  margin-bottom: var(--space-md);
}

.legal-content ul {
  margin-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal-content li {
  margin-bottom: var(--space-sm);
  opacity: 0.9;
}