/* ============================================
   NEO-CLASSICAL ARCHIVE DESIGN SYSTEM
   Luxury Brutalism & Floating Frames
   ============================================ */

:root {
  /* Color Palette - Velvet Tech */
  --color-base-dark: #0A1128; /* Oxford Navy */
  --color-base-alt: #2D0B0B; /* Deep Royal Burgundy */
  --color-accent-gold: #C5A059; /* Burnished Gold */
  --color-accent-copper: #B87333; /* Brushed Copper */
  --color-neutral-bone: #F5F5DC; /* Warm Bone */
  --color-text-primary: #0A1128;
  --color-text-secondary: #4A5568;
  --color-text-light: #F5F5DC;
  --color-overlay-dark: rgba(10, 17, 40, 0.85);
  --color-overlay-light: rgba(245, 245, 220, 0.95);
  
  /* Typography */
  --font-header: 'Cormorant Garamond', 'Playfair Display', serif;
  --font-body: 'Space Mono', 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 4rem;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-md);
  --section-padding: var(--space-3xl) var(--space-md);
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --border-thin: 1px solid;
  --border-medium: 2px solid;
  --border-thick: 3px solid;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(197, 160, 89, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-modal: 1030;
  --z-overlay: 1040;
}

/* ============================================
   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-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-neutral-bone);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
}

ul {
  list-style: none;
}

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

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

h1 {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-6xl));
  font-style: italic;
}

h2 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
}

h3 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-3xl));
}

h4 {
  font-size: clamp(var(--font-size-xl), 2vw, var(--font-size-2xl));
}

p {
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-base);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

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

.section {
  padding: var(--section-padding);
  position: relative;
}

.section-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  text-align: center;
}

.section-content > * {
  text-align: left;
}

.section-content > .text-center,
.section-content > h2.text-center,
.section-content > h3.text-center {
  text-align: center;
}

/* ============================================
   HEADER
   ============================================ */

.header-wrapper {
  position: relative;
  z-index: var(--z-sticky);
  background-color: var(--color-overlay-light);
  backdrop-filter: blur(10px);
  border-bottom: var(--border-thin) var(--color-accent-gold);
}

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

.brand-name {
  font-family: var(--font-header);
  font-size: clamp(1rem, 3vw, 1.3rem);
  font-weight: 700;
  font-style: italic;
  color: var(--color-text-primary);
}

.nav-menu {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-link {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-xs) var(--space-sm);
  position: relative;
}

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

.nav-link:hover::after {
  width: 100%;
}

.burger-button {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-xs);
  position: relative;
  z-index: var(--z-sticky);
}

.burger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.burger-button.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger-button.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-button.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

@media (min-width: 1024px) {
  .burger-button {
    display: none;
  }
}

@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-overlay-light);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 10px;
    gap: var(--space-lg);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: var(--z-modal);
    overflow-y: auto;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-link {
    font-size: var(--font-size-lg);
    width: 100%;
    padding: var(--space-sm) 0;
    border-bottom: var(--border-thin) var(--color-accent-gold);
  }
}

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

.hero-banner {
  position: relative;
  width: 100vw;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(10, 17, 40, 0.7) 0%,
    rgba(10, 17, 40, 0.5) 50%,
    rgba(10, 17, 40, 0.8) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-text-light);
  padding: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 6vw, var(--font-size-6xl));
  margin-bottom: var(--space-md);
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: clamp(var(--font-size-lg), 2vw, var(--font-size-2xl));
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================
   SECTION BANNERS (Images Under Text)
   ============================================ */

.section-banner {
  position: relative;
  width: 100%;
  max-width: var(--container-max-width);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: var(--space-xl) auto;
  border-radius: var(--radius-lg);
}

.section-banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.section-banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(10, 17, 40, 0.75) 0%,
    rgba(10, 17, 40, 0.6) 100%
  );
  z-index: 2;
}

.section-banner-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-text-light);
  padding: var(--space-xl);
  max-width: 700px;
}

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

.grid-container {
  display: grid;
  gap: var(--space-lg);
  margin: var(--space-xl) auto;
  max-width: var(--container-max-width);
  padding: 0 var(--container-padding);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  justify-items: center;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  justify-items: center;
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  justify-items: center;
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    justify-items: stretch;
  }
}

/* ============================================
   CARD COMPONENTS
   ============================================ */

.card {
  background-color: var(--color-neutral-bone);
  border: var(--border-medium) var(--color-accent-gold);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(197, 160, 89, 0.1) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: var(--color-accent-copper);
}

.card:hover::before {
  opacity: 1;
}

.card-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding-top: 75%;
  overflow: hidden;
  border-radius: var(--radius-sm);
  margin: 0 auto var(--space-md);
  clip-path: polygon(
    0% 10%,
    10% 0%,
    90% 0%,
    100% 10%,
    100% 90%,
    90% 100%,
    10% 100%,
    0% 90%
  );
}

.card-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image {
  transform: scale(1.05);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.card-price {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-accent-copper);
  letter-spacing: 0.1em;
}

/* ============================================
   BLUEPRINT OVERLAY (Hover Effect)
   ============================================ */

.blueprint-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 10;
  background-image: 
    linear-gradient(to right, rgba(197, 160, 89, 0.3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(197, 160, 89, 0.3) 1px, transparent 1px);
  background-size: 20px 20px;
}

.card:hover .blueprint-overlay {
  opacity: 1;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: var(--border-medium) var(--color-accent-gold);
  background-color: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin-top: 10px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background-color: var(--color-accent-gold);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn:hover {
  color: var(--color-text-primary);
  border-color: var(--color-accent-copper);
}

.btn:hover::before {
  left: 0;
}

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

.btn-primary::before {
  background-color: var(--color-accent-copper);
}

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

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

.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  border: var(--border-thin) var(--color-accent-gold);
  background-color: var(--color-neutral-bone);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-copper);
  box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.2);
}

.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 {
  margin-top: 4px;
  flex-shrink: 0;
}

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

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

.footer-wrapper {
  background-color: var(--color-base-dark);
  color: var(--color-text-light);
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: var(--space-3xl);
}

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

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section-title {
  font-family: var(--font-header);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-accent-gold);
}

.footer-link {
  display: block;
  font-size: var(--font-size-sm);
  padding: var(--space-xs) 0;
  color: var(--color-text-light);
  opacity: 0.8;
  transition: opacity var(--transition-base);
}

.footer-link:hover {
  opacity: 1;
  color: var(--color-accent-gold);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: var(--border-thin) rgba(197, 160, 89, 0.3);
  font-size: var(--font-size-xs);
  opacity: 0.7;
}

/* ============================================
   PRIVACY POPUP
   ============================================ */

.privacy-popup {
  position: fixed;
  bottom: var(--space-md);
  left: var(--space-md);
  right: var(--space-md);
  max-width: 500px;
  background-color: var(--color-overlay-light);
  backdrop-filter: blur(20px);
  border: var(--border-medium) var(--color-accent-gold);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  transform: translateY(150%);
  transition: transform var(--transition-base);
}

.privacy-popup.active {
  transform: translateY(0);
}

.privacy-popup-content {
  margin-bottom: var(--space-md);
}

.privacy-popup-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.privacy-popup-text {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
}

.privacy-popup-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ============================================
   PROVENANCE SCROLL (Timeline)
   ============================================ */

.provenance-timeline {
  position: fixed;
  top: 50%;
  right: var(--space-md);
  transform: translateY(-50%);
  z-index: var(--z-dropdown);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.provenance-timeline:hover {
  opacity: 1;
}

.provenance-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-accent-gold);
  border: 2px solid var(--color-base-dark);
  cursor: pointer;
  transition: all var(--transition-base);
}

.provenance-marker.active {
  background-color: var(--color-accent-copper);
  transform: scale(1.3);
  box-shadow: var(--shadow-glow);
}

.provenance-label {
  position: absolute;
  right: 20px;
  font-size: var(--font-size-xs);
  font-family: var(--font-body);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.provenance-marker:hover .provenance-label {
  opacity: 1;
}

/* ============================================
   VAULT PAGE (Exclusive Collection)
   ============================================ */

.vault-container {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-md);
}

.vault-access {
  max-width: 500px;
  width: 100%;
  background-color: var(--color-overlay-light);
  backdrop-filter: blur(20px);
  border: var(--border-thick) var(--color-accent-gold);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.vault-icon {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-md);
  color: var(--color-accent-gold);
}

.vault-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.vault-description {
  margin-bottom: var(--space-lg);
  color: var(--color-text-secondary);
}

/* ============================================
   ERA EXPLORER (Interactive Timeline)
   ============================================ */

.era-slider-container {
  position: relative;
  padding: var(--space-2xl) 0;
  margin: var(--space-xl) 0;
}

.era-slider {
  width: 100%;
  height: 8px;
  background: linear-gradient(
    to right,
    var(--color-base-dark) 0%,
    var(--color-accent-gold) 50%,
    var(--color-base-dark) 100%
  );
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.era-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background-color: var(--color-accent-gold);
  border: 3px solid var(--color-base-dark);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.era-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background-color: var(--color-accent-gold);
  border: 3px solid var(--color-base-dark);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.era-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-sm);
  font-size: var(--font-size-xs);
  font-family: var(--font-body);
}

.era-display {
  text-align: center;
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background-color: var(--color-neutral-bone);
  border: var(--border-medium) var(--color-accent-gold);
  border-radius: var(--radius-md);
}

/* ============================================
   MAPS CONTAINER
   ============================================ */

.maps-container {
  width: 100%;
  height: 400px;
  border: var(--border-medium) var(--color-accent-gold);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: var(--space-xl) 0;
}

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

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

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

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

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

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

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

.hidden {
  display: none;
}

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

@media (max-width: 768px) {
  :root {
    --section-padding: var(--space-xl) var(--space-sm);
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
  }
  
  .hero-banner {
    min-height: 50vh;
  }
  
  .section-banner {
    min-height: 300px;
  }
  
  .provenance-timeline {
    display: none;
  }
  
  .privacy-popup {
    left: var(--space-sm);
    right: var(--space-sm);
  }
}

@media (max-width: 320px) {
  :root {
    --container-padding: var(--space-sm);
    --section-padding: var(--space-lg) var(--space-xs);
  }
}