/* ============================================
   GRID-BASED CYBER-MINIMALISM STYLESHEET
   Personal Library Curation & Organization
   ============================================ */

:root {
  /* Color Palette */
  --color-inkwell: #0F172A;
  --color-parchment: #D4AF37;
  --color-vellum: #F8F7F2;
  --color-cyan: #00E5FF;
  --color-dark: #1E293B;
  --color-light: #F1F5F9;
  
  /* Typography */
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Grid */
  --grid-gap: 1.5rem;
  --container-max: 1200px;
}

/* ============================================
   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-sans);
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-vellum);
  background-color: var(--color-inkwell);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

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

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

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-weight: 300;
}

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

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-lg) var(--space-md);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  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);
  position: relative;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  color: var(--color-parchment);
}

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

.nav-link {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-vellum);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  position: relative;
}

.nav-link:hover {
  color: var(--color-cyan);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--color-cyan);
  transition: var(--transition-base);
}

.nav-link:hover::after {
  width: 80%;
}

/* Бургер-кнопка всегда находится в хедере, отдельно от nav-menu */
.burger-button {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  z-index: 1;
  transition: var(--transition-base);
  position: relative;
  order: 999;
  margin-left: auto;
}

.burger-button:hover {
  border-color: var(--color-cyan);
}

.burger-line {
  width: 24px;
  height: 2px;
  background: var(--color-vellum);
  transition: 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);
}

/* Мобильное меню открывается отдельно от хедера как overlay */
.mobile-nav {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-inkwell);
  z-index: 9998;
  padding: var(--space-2xl) var(--space-lg);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
  visibility: hidden;
}

.mobile-nav.active {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.mobile-nav-link {
  font-size: 1.25rem;
  color: var(--color-vellum);
  padding: var(--space-md);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  display: block;
}

.mobile-nav-link:hover {
  color: var(--color-cyan);
  padding-left: var(--space-lg);
}

.mobile-nav-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: 2rem;
  color: var(--color-vellum);
  background: none;
  border: none;
  cursor: pointer;
}

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

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

/* ============================================
   HERO BANNER SECTION
   ============================================ */

.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;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.85) 0%,
    rgba(30, 41, 59, 0.75) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--container-max);
  width: 100%;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: var(--space-lg);
  color: var(--color-vellum);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--color-parchment);
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

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

.content-section {
  padding: var(--space-2xl) var(--space-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

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

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
}

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

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--grid-gap);
  margin-top: var(--space-xl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.grid-item {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: var(--transition-base);
  backdrop-filter: blur(5px);
}

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

.grid-image-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 250px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.grid-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

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

.grid-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(15, 23, 42, 0.7) 100%
  );
  opacity: 0;
  transition: var(--transition-base);
}

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

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

.grid-item:hover .scan-line {
  opacity: 1;
}

@keyframes scan {
  0% {
    top: 0;
    opacity: 1;
  }
  100% {
    top: 100%;
    opacity: 0;
  }
}

/* ============================================
   BANNER SECTION WITH IMAGE UNDER TEXT
   ============================================ */

.banner-section {
  position: relative;
  width: 100vw;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: var(--space-2xl) calc(-50vw + 50%);
}

.banner-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.3;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.9) 0%,
    rgba(30, 41, 59, 0.8) 100%
  );
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 3;
  max-width: var(--container-max);
  width: 100%;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}

/* ============================================
   TWO COLUMN LAYOUT
   ============================================ */

.two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  align-items: center;
  margin-top: var(--space-xl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.column-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

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

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.product-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: var(--transition-base);
  backdrop-filter: blur(5px);
}

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

.product-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 250px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

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

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

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

.contact-form {
  max-width: 600px;
  margin: var(--space-xl) auto;
  background: rgba(30, 41, 59, 0.5);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(212, 175, 55, 0.2);
  backdrop-filter: blur(5px);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 400;
  color: var(--color-vellum);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-vellum);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 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 {
  margin-top: 4px;
  accent-color: var(--color-cyan);
}

.checkbox-label {
  font-size: 0.9rem;
  line-height: 1.5;
}

.submit-button {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, var(--color-parchment), var(--color-cyan));
  color: var(--color-inkwell);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
  margin-top: var(--space-md);
}

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

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

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--space-xl);
  border: 1px solid rgba(212, 175, 55, 0.2);
}

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

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

.site-footer {
  background: rgba(15, 23, 42, 0.95);
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  padding: var(--space-xl) var(--space-md);
  margin-top: var(--space-2xl);
}

.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 h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
  color: var(--color-parchment);
  font-weight: 600;
}

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

.footer-link {
  font-size: 0.9rem;
  color: var(--color-vellum);
  opacity: 0.8;
  transition: var(--transition-base);
}

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

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  font-size: 0.85rem;
  opacity: 0.7;
}

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

.privacy-popup {
  display: none;
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  max-width: 400px;
  background: rgba(30, 41, 59, 0.95);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  z-index: 10000;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

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

.privacy-popup p {
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

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

.privacy-button {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-base);
}

.privacy-accept {
  background: var(--color-cyan);
  color: var(--color-inkwell);
}

.privacy-decline {
  background: transparent;
  color: var(--color-vellum);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

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

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

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

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

.date {
  font-size: 0.9rem;
  opacity: 0.8;
  font-style: italic;
}

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

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

.btn-inline {
  display: inline-block;
  text-align: center;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-parchment);
  color: var(--color-vellum);
  margin-top: 10px;
}

.btn-secondary:hover {
  background: rgba(212, 175, 55, 0.1);
  color: white;
}

.icon-large {
  font-size: 2.5rem;
  color: var(--color-cyan);
  margin-bottom: var(--space-md);
}

.error-code {
  font-size: 6rem;
  color: var(--color-cyan);
  margin-bottom: var(--space-lg);
  font-weight: 700;
}

.success-icon {
  font-size: 4rem;
  color: var(--color-cyan);
  margin-bottom: var(--space-lg);
}

.text-large {
  font-size: 1.1rem;
  line-height: 1.8;
}

.text-normal {
  font-size: 1rem;
  line-height: 1.8;
}

.opacity-subtle {
  opacity: 0.9;
}

.opacity-muted {
  opacity: 0.8;
}

.footer-text {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-bottom: var(--space-sm);
}

.content-narrow {
  max-width: 700px;
  margin: 0 auto;
}

.page-container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl) 0;
}

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

.text-content-narrow {
  max-width: 700px;
  margin: 0 auto;
}

.text-content-wide {
  max-width: 800px;
  margin: 0 auto;
}

.text-content-wide-xl {
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.mb-0 {
  margin-bottom: 0;
}

.mr-md {
  margin-right: var(--space-md);
}

.page-title-large {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-lg);
}

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

@media (max-width: 1023px) {
  /* На маленьких экранах скрываем обычное меню */
  .nav-menu {
    display: none;
  }
  
  /* Бургер-кнопка всегда видна в хедере на маленьких экранах */
  .burger-button {
    display: flex;
  }
  
  .header-container {
    justify-content: space-between;
  }
  
  .brand-name {
    flex: 1;
  }
  
  /* Убеждаемся, что хедер остается поверх мобильного меню */
  .site-header {
    z-index: 10000;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-2xl: 3rem;
  }
  
  .hero-banner,
  .banner-section {
    min-height: 50vh;
  }
  
  .grid-container,
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .two-column {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
  
  .privacy-popup {
    right: var(--space-md);
    left: var(--space-md);
    max-width: none;
  }
}

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

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