/* ============================================
   Nordic Modular Furniture - Style System
   ============================================ */

:root {
  /* Color Palette - Nordic Modular Theme */
  --color-primary: #3E5D48;
  --color-secondary: #F5F7F8;
  --color-accent: #E7DCC6;
  --color-neutral: #D2D5D9;
  --color-text: #1A1C1D;
  --color-text-light: #6B7280;
  --color-white: #FFFFFF;
  
  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-heading: 'Satoshi', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(26, 28, 29, 0.05);
  --shadow-md: 0 4px 12px rgba(26, 28, 29, 0.08);
  --shadow-lg: 0 8px 24px rgba(26, 28, 29, 0.12);
  --shadow-3d: 0 4px 16px rgba(26, 28, 29, 0.1), 0 2px 4px rgba(26, 28, 29, 0.06);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 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;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-secondary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 300;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

/* ============================================
   Header
   ============================================ */

.site-header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1000;
  transition: transform var(--transition-base);
}

.site-header.hidden {
  transform: translateY(-100%);
}

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

.brand-name {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

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

.nav-link {
  font-size: 0.9375rem;
  color: var(--color-text);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

.burger-button {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  width: 32px;
  height: 32px;
  justify-content: center;
  align-items: center;
}

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

.burger-button.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

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

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
  z-index: 999;
}

.mobile-menu.active {
  max-height: 500px;
}

.mobile-menu-list {
  list-style: none;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-menu-link {
  display: block;
  padding: var(--space-md);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.mobile-menu-link:hover {
  background-color: var(--color-secondary);
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
  min-height: calc(100vh - var(--header-height) - 120px);
  padding: var(--space-xl) 0;
}

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

.section {
  margin-bottom: var(--space-2xl);
}

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

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
  padding: var(--space-2xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  color: var(--color-text-light);
}

.hero-image {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-3d);
  object-fit: cover;
}

/* ============================================
   Grid Layouts
   ============================================ */

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

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

.grid-four {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

/* ============================================
   Cards
   ============================================ */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3d);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

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

.card-description {
  color: var(--color-text-light);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

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

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-neutral);
}

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   Forms
   ============================================ */

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.9375rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-neutral);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
  background-color: var(--color-white);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.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: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox-label {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

/* ============================================
   Layout Showcase
   ============================================ */

.layout-showcase {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-xl);
}

.layout-title {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.layout-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
}

.layout-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.toggle-switch {
  position: relative;
  width: 60px;
  height: 30px;
  background-color: var(--color-neutral);
  border-radius: 15px;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.toggle-switch.active {
  background-color: var(--color-primary);
}

.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background-color: var(--color-white);
  border-radius: 50%;
  transition: transform var(--transition-base);
}

.toggle-switch.active .toggle-slider {
  transform: translateX(30px);
}

.toggle-label {
  font-weight: 500;
  color: var(--color-text);
}

.layout-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  transition: all var(--transition-slow);
}

.layout-content.expanded {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.furniture-module {
  background-color: var(--color-secondary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-neutral);
  transition: all var(--transition-base);
  opacity: 0;
  transform: scale(0.9);
}

.layout-content.expanded .furniture-module {
  opacity: 1;
  transform: scale(1);
}

.furniture-module:nth-child(1) {
  transition-delay: 0.1s;
}

.furniture-module:nth-child(2) {
  transition-delay: 0.2s;
}

.furniture-module:nth-child(3) {
  transition-delay: 0.3s;
}

.module-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.module-name {
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

/* ============================================
   Materials Table
   ============================================ */

.materials-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-xl);
}

.materials-table th,
.materials-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-neutral);
}

.materials-table th {
  background-color: var(--color-secondary);
  font-weight: 600;
  color: var(--color-primary);
}

.materials-table tr:last-child td {
  border-bottom: none;
}

.materials-table tr:hover {
  background-color: var(--color-secondary);
}

/* ============================================
   Transformation Slider
   ============================================ */

.transformation-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-3d);
  margin-bottom: var(--space-xl);
}

.transformation-visual {
  position: relative;
  width: 100%;
  height: 400px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}

.transformation-image {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.transformation-image.active {
  opacity: 1;
}

.slider-control {
  width: 100%;
  height: 8px;
  background-color: var(--color-neutral);
  border-radius: 4px;
  outline: none;
  -webkit-appearance: none;
  margin-bottom: var(--space-md);
}

.slider-control::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  background-color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.slider-control::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background-color: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-sm);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

/* ============================================
   Google Maps
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-xl);
}

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

/* ============================================
   Contact Info
   ============================================ */

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

.contact-item {
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.contact-icon {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.contact-label {
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.contact-value {
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

/* ============================================
   Privacy Popup
   ============================================ */

.privacy-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(26, 28, 29, 0.7);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.privacy-overlay.active {
  display: flex;
}

.privacy-popup {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.privacy-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.privacy-close:hover {
  background-color: var(--color-neutral);
}

.privacy-title {
  font-size: 1.75rem;
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.privacy-content {
  color: var(--color-text-light);
  line-height: 1.8;
}

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

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-neutral);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

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

.footer-menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
  list-style: none;
  margin-bottom: var(--space-lg);
}

.footer-link {
  font-size: 0.875rem;
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary);
}

.footer-copyright {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-light);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-neutral);
}

/* ============================================
   Thank You Page
   ============================================ */

.thank-you-container {
  text-align: center;
  padding: var(--space-2xl) 0;
  max-width: 600px;
  margin: 0 auto;
}

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

.thank-you-title {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.thank-you-message {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

/* ============================================
   404 Page
   ============================================ */

.error-container {
  text-align: center;
  padding: var(--space-2xl) 0;
  max-width: 600px;
  margin: 0 auto;
}

.error-code {
  font-size: 6rem;
  font-weight: 300;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.error-title {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.error-message {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

/* ============================================
   Utility Classes
   ============================================ */

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

.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);
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  .nav-menu {
    display: none;
  }
  
  .burger-button {
    display: flex;
  }
}

@media (min-width: 769px) {
  .burger-button {
    display: none;
  }
  
  .nav-menu {
    display: flex;
  }
  
  .mobile-menu {
    display: none !important;
  }
  
  .grid-two,
  .grid-three,
  .grid-four {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
  }
  
  .footer-menu {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }
  
  .hero-section {
    padding: var(--space-xl) var(--space-md);
  }
  
  .layout-showcase {
    padding: var(--space-md);
  }
  
  .transformation-container {
    padding: var(--space-md);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  .section {
    margin-bottom: var(--space-xl);
  }
  
  .card {
    padding: var(--space-md);
  }
  
  .privacy-popup {
    padding: var(--space-md);
    max-height: 90vh;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 13px;
  }
  
  .header-container {
    padding: 0 var(--space-sm);
  }
  
  .brand-name {
    font-size: 1rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
  }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

.slide-in {
  animation: slideIn 0.4s ease-out;
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .site-header,
  .site-footer,
  .burger-button,
  .mobile-menu {
    display: none;
  }
  
  body {
    background-color: white;
  }
  
  .card,
  .layout-showcase {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}