/* ============================================
   PAPER-MORPHIA & SWISS GRID DESIGN SYSTEM
   Bookbinding & Stationery Design Website
   ============================================ */

:root {
  /* Color Palette - Ink & Vellum */
  --color-gall-ink: #0F111A;
  --color-parchment: #F2EFE9;
  --color-copper: #708D81;
  --color-wax-seal: #8B0000;
  --color-gold-leaf: #D4AF37;
  --color-white: #FFFFFF;
  --color-shadow: rgba(15, 17, 26, 0.1);
  
  /* Typography */
  --font-header: 'EB Garamond', 'Fraunces', serif;
  --font-body: 'IBM Plex Mono', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px var(--color-shadow);
  --shadow-md: 0 4px 12px var(--color-shadow);
  --shadow-lg: 0 8px 24px var(--color-shadow);
  --shadow-margin: 0 0 0 1px rgba(15, 17, 26, 0.05);
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* ============================================
   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: 1rem;
  line-height: 1.6;
  color: var(--color-gall-ink);
  background-color: var(--color-parchment);
  overflow-x: hidden;
}

/* Shadow Margin Effect - Makes site look like open book */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100vh;
  background: linear-gradient(to bottom, 
    transparent 0%, 
    var(--color-shadow) 20%, 
    var(--color-shadow) 80%, 
    transparent 100%);
  pointer-events: none;
  z-index: 9999;
  transform: translateX(-50%);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-header);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-gall-ink);
}

h1 {
  font-size: clamp(1.5rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.2rem, 3vw, 2rem);
}

h3 {
  font-size: clamp(1rem, 2vw, 1.2rem);
}

p {
  margin-bottom: var(--space-md);
  max-width: 65ch;
}

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

a:hover {
  color: var(--color-wax-seal);
}

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

.site-header {
  position: relative;
  width: 100%;
  background-color: var(--color-parchment);
  border-bottom: 1px solid rgba(112, 141, 129, 0.2);
  z-index: 1000;
  padding: var(--space-md) 0;
}

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

.brand-name {
  font-family: var(--font-header);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--color-gall-ink);
  font-weight: 400;
}

.main-nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  list-style: none;
}

.main-nav li {
  position: relative;
}

.main-nav a {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gall-ink);
  padding: var(--space-sm) 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-gold-leaf);
  transition: width var(--transition-base);
}

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

/* Burger Menu Button - Always visible in header */
.burger-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 10001;
  margin-left: auto;
}

.burger-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-gall-ink);
  margin: 4px 0;
  transition: all var(--transition-base);
}

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

.burger-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

/* Navigation Menu Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(15, 17, 26, 0.5);
  z-index: 998;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

/* Navigation Menu - Opens separately from header */
@media (max-width: 1023px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--color-parchment);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: var(--space-xxl) var(--space-lg);
    padding-top: calc(var(--header-height) + var(--space-lg));
    box-shadow: -4px 0 24px var(--color-shadow);
    transition: right var(--transition-base);
    z-index: 999;
    gap: var(--space-md);
    overflow-y: auto;
  }
  
  .main-nav.active {
    right: 0;
  }
  
  .main-nav li {
    width: 100%;
  }
  
  .main-nav a {
    display: block;
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(112, 141, 129, 0.1);
    width: 100%;
  }
}

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

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

main {
  min-height: calc(100vh - 200px);
}

/* ============================================
   FULL-WIDTH BANNER SECTIONS
   ============================================ */

.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%);
}

.banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.4;
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  width: 100%;
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  background-color: rgba(242, 239, 233, 0.85);
  backdrop-filter: blur(10px);
  margin: var(--space-xl) auto;
  border: 1px solid rgba(212, 175, 55, 0.2);
  box-shadow: var(--shadow-lg);
}

.banner-content h1 {
  color: var(--color-gall-ink);
  margin-bottom: var(--space-md);
}

.banner-content p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-gall-ink);
  margin: 0 auto;
  max-width: 70ch;
}

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

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

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
  padding-bottom: var(--space-md);
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--color-gold-leaf);
}

/* Layered Card Layouts */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  width: 100%;
  max-width: var(--max-width);
}

.content-card {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold-leaf), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
}

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

.content-card:hover::before {
  transform: translateX(0);
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  margin-bottom: var(--space-md);
  border: 1px solid rgba(112, 141, 129, 0.1);
}

.card-title {
  font-family: var(--font-header);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-gall-ink);
}

.card-text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-gall-ink);
}

/* ============================================
   TWO COLUMN GRID
   ============================================ */

.two-column-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  align-items: center;
  margin-top: var(--space-xl);
  width: 100%;
  max-width: var(--max-width);
  justify-items: center;
}

.two-column-grid > div {
  width: 100%;
  display: flex;
  flex-direction: column;
}

.grid-image {
  width: 100%;
  max-width: 500px;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
  margin: 0 auto;
}

.grid-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: left;
}

.grid-content h3,
.grid-content p {
  text-align: left;
}

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

.contact-form {
  max-width: 600px;
  margin: var(--space-xl) auto;
  background-color: var(--color-white);
  padding: var(--space-xl);
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gall-ink);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid rgba(112, 141, 129, 0.3);
  background-color: var(--color-parchment);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-copper);
  box-shadow: 0 0 0 2px rgba(112, 141, 129, 0.1);
}

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

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

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

.checkbox-group label {
  font-size: 0.85rem;
  text-transform: none;
  letter-spacing: normal;
  line-height: 1.5;
}

.submit-button {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-copper);
  color: var(--color-white);
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 10px;
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-fast);
}

.submit-button:hover {
  color: white;
  background-color: var(--color-wax-seal);
  transform: translateY(-2px);
}

.submit-button:active {
  transform: translateY(0);
}

.submit-button:visited {
  color: var(--color-white);
}

a.submit-button {
  text-align: center;
  text-decoration: none;
  display: inline-block;
}

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

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  width: 100%;
  max-width: var(--max-width);
}

.product-card {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform var(--transition-base);
}

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

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  margin-bottom: var(--space-md);
  border: 1px solid rgba(112, 141, 129, 0.1);
}

.product-title {
  font-family: var(--font-header);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-gall-ink);
}

.product-price {
  font-size: 1.25rem;
  color: var(--color-copper);
  font-weight: 600;
  margin-top: var(--space-md);
}

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

.map-container {
  width: 100%;
  height: 400px;
  margin: var(--space-xl) 0;
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

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

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

.site-footer {
  background-color: var(--color-gall-ink);
  color: var(--color-parchment);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

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

.footer-section h3 {
  font-family: var(--font-header);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--color-parchment);
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: var(--color-parchment);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-gold-leaf);
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(242, 239, 233, 0.2);
  font-size: 0.85rem;
}

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

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: var(--space-lg);
  right: var(--space-lg);
  max-width: 500px;
  background-color: var(--color-white);
  padding: var(--space-lg);
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  display: none;
}

.privacy-popup.active {
  display: block;
}

.privacy-popup p {
  font-size: 0.85rem;
  margin-bottom: var(--space-md);
}

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

.privacy-button {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-copper);
  background-color: var(--color-copper);
  color: var(--color-white);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: background-color var(--transition-fast);
}

.privacy-button:hover {
  background-color: var(--color-wax-seal);
}

.privacy-button.secondary {
  background-color: transparent;
  color: var(--color-copper);
}

.privacy-button.secondary:hover {
  background-color: var(--color-parchment);
}

/* ============================================
   THANK YOU PAGE
   ============================================ */

.thank-you-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--color-white);
  border: 1px solid rgba(112, 141, 129, 0.2);
  box-shadow: var(--shadow-md);
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-copper);
  margin-bottom: var(--space-lg);
}

/* ============================================
   404 PAGE
   ============================================ */

.error-container {
  max-width: 600px;
  margin: var(--space-xxl) auto;
  text-align: center;
  padding: var(--space-xl);
}

.error-code {
  font-size: 6rem;
  font-family: var(--font-header);
  color: var(--color-copper);
  margin-bottom: var(--space-md);
}

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

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

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

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

.date {
  font-size: 0.85rem;
  color: var(--color-copper);
  font-style: italic;
}

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

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  
  .header-container {
    padding: 0 var(--space-md);
  }
  
  .content-section {
    padding: var(--space-xl) var(--space-md);
  }
  
  .card-grid,
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .two-column-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-banner {
    min-height: 50vh;
  }
  
  .banner-content {
    padding: var(--space-lg) var(--space-md);
    margin: var(--space-lg) auto;
  }
  
  .privacy-popup {
    left: var(--space-md);
    right: var(--space-md);
    bottom: var(--space-md);
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .contact-form {
    padding: var(--space-lg);
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   PAGE-FLIP TRANSITION EFFECTS
   ============================================ */

@keyframes pageFlip {
  0% {
    transform: perspective(1000px) rotateY(0deg);
    opacity: 1;
  }
  50% {
    transform: perspective(1000px) rotateY(-90deg);
    opacity: 0.5;
  }
  100% {
    transform: perspective(1000px) rotateY(0deg);
    opacity: 1;
  }
}

.page-transition {
  animation: pageFlip 0.6s ease-in-out;
}

/* ============================================
   CURSOR EFFECTS (Nib/Bone Folder)
   ============================================ */

@media (hover: hover) {
  .stationery-item {
    cursor: none;
  }
  
  .custom-cursor {
    position: fixed;
    width: 20px;
    height: 20px;
    pointer-events: none;
    z-index: 99999;
    transition: transform 0.1s ease;
  }
}