/* ============================================
   CONSTRUCTION COMPANY - MODERN CSS DESIGN
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@600;700;800&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
  /* Color Palette — топла „ремонтна“ гама (оранжево + топли неутрални) */
  --color-primary: #EA580C;
  --color-primary-dark: #C2410C;
  --color-primary-light: #FB923C;
  --color-secondary: #292524;
  --color-secondary-dark: #1C1917;
  --color-secondary-light: #44403C;

  --color-accent: #F59E0B;
  --color-success: #16A34A;
  --color-danger: #DC2626;

  --color-text-primary: #292524;
  --color-text-secondary: #78716C;
  --color-text-light: #FFFFFF;

  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #FAF7F4;
  --color-bg-dark: #1C1917;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #EA580C 0%, #F59E0B 100%);
  --gradient-dark: linear-gradient(135deg, #292524 0%, #44403C 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(28, 25, 23, 0.92) 0%, rgba(234, 88, 12, 0.78) 100%);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  --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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1050;
  --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

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

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-sm);
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

/* ============================================
   UTILITY CLASSES (BEM Utility Classes)
   ============================================ */
/* 
   BEM Naming Convention Used:
   - Block: .container, .btn, .section
   - Element: .btn__text, .header__nav
   - Modifier: .btn--primary, .nav--active
*/

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: var(--spacing-md) auto 0;
  border-radius: var(--radius-full);
}

/* Button Block with modifiers */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-light);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-text-light);
  border: 2px solid var(--color-text-light);
}

.btn-secondary:hover {
  background: var(--color-text-light);
  color: var(--color-primary);
}

/* ============================================
   HEADER BLOCK & NAVIGATION (БЕМ)
   .header { }
   .header__nav { }
   .header__logo { }
   .header.scrolled { } - modifier
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

/* Navigation container */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-secondary);
}
.logo-mark {
  display: block;
  flex: none;
  width: 2rem;
  height: 2rem;
}
@media (max-width: 480px) {
  .logo { font-size: var(--font-size-xl); gap: 0.5rem; }
  .logo-mark { width: 1.75rem; height: 1.75rem; }
}

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

/* Navigation links with underline animation */
.nav-link {
  font-weight: 500;
  color: var(--color-text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

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

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

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

/* Mobile hamburger menu button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-text-light);
  max-width: 800px;
  padding: var(--spacing-2xl);
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: var(--font-size-6xl);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 300;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  background: var(--color-bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background: var(--color-bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4xl);
  color: var(--color-text-light);
  box-shadow: var(--shadow-lg);
}

.service-card h3 {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  text-align: center;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.service-card {
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary);
}

/* ============================================
   CALCULATORS SECTION
   ============================================ */
.calculators {
  background: var(--color-bg-secondary);
}

.calculators-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
  align-items: center;
}

.calculator-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: 600;
  transition: all var(--transition-base);
}

.calculator-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

.calculator-icon {
  font-size: var(--font-size-2xl);
  display: inline-block;
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  height: 350px;
}

.project-card:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-2xl);
  border-radius: var(--radius-2xl);
}

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

.project-card:hover .project-image {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-lg);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
  color: var(--color-text-light);
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-base);
}

.project-card:hover .project-overlay {
  transform: translateY(0);
  opacity: 1;
}

.project-overlay h3 {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.project-overlay p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  background: var(--gradient-dark);
  color: var(--color-text-light);
}

.about .section-title {
  color: var(--color-text-light);
}

.about .section-title::after {
  background: var(--gradient-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-text h3 {
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-md);
}

.about-text p {
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary-light);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  background: var(--color-bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.contact-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(5px);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.contact-details h4 {
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-lg);
}

.contact-details p {
  color: var(--color-text-secondary);
  margin: 0;
}

.contact-form {
  background: var(--color-bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group .btn {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-secondary-dark);
  color: var(--color-text-light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h3 {
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--color-primary-light);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  transition: all var(--transition-base);
  text-decoration: none;
}

.social-link img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.social-link:hover {
  background: var(--gradient-primary);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-xl);
    transition: left var(--transition-base);
    box-shadow: var(--shadow-xl);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .project-card {
    height: 300px;
  }
  
  .service-card {
    padding: var(--spacing-lg);
  }
  
  .contact-form {
    padding: var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .calculators-buttons {
    flex-direction: column;
  }
  
  .calculator-btn {
    width: 100%;
  }
}

/* ============================================
   FLOATING CONTACT BUTTON
   ============================================ */
.floating-contact-btn {
  position: fixed;
  top: 100px;
  right: 30px;
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  background: var(--gradient-primary);
  color: var(--color-text-light);
  border: none;
  border-radius: var(--radius-full);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  font-family: var(--font-primary);
  white-space: nowrap;
}

.floating-contact-btn:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--shadow-2xl);
  background: var(--color-primary-dark);
}

.floating-contact-btn:active {
  transform: translateY(-2px) scale(0.95);
}

.floating-contact-icon {
  font-size: var(--font-size-2xl);
  display: inline-block;
}

.floating-contact-text {
  display: inline-block;
}

@media (max-width: 768px) {
  .floating-contact-btn {
    top: 80px;
    right: 20px;
    width: 60px;
    height: 60px;
    padding: 0;
    border-radius: 50%;
  }
  
  .floating-contact-text {
    display: none;
  }
}

/* ============================================
   GALLERY MODAL STYLES
   ============================================ */
.gallery-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: var(--z-modal);
  overflow: hidden;
  animation: fadeIn 0.3s ease-in-out;
}

.gallery-modal.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Modal Close Button */
.modal-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 3rem;
  color: var(--color-text-light);
  background: none;
  border: none;
  cursor: pointer;
  z-index: calc(var(--z-modal) + 3);
  transition: all var(--transition-fast);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

.modal-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: rotate(90deg);
  color: var(--color-primary);
}

/* Modal Navigation Buttons */
.modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  color: var(--color-text-light);
  background-color: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  z-index: calc(var(--z-modal) + 2);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  user-select: none;
}

.modal-prev {
  left: 30px;
}

.modal-next {
  right: 30px;
}

.modal-nav:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-50%) scale(1.1);
}

.modal-nav:active {
  transform: translateY(-50%) scale(0.95);
}

/* Modal Content */
.modal-content {
  position: relative;
  max-width: 90%;
  max-height: 80%;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: zoomIn 0.3s ease-in-out;
}

.modal-image {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
}

.modal-caption {
  color: var(--color-text-light);
  font-size: var(--font-size-lg);
  text-align: center;
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-md);
  max-width: 800px;
}

.modal-counter {
  color: var(--color-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-top: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
}

/* Modal Thumbnails */
.modal-thumbnails {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  max-width: 90%;
  z-index: calc(var(--z-modal) + 1);
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) rgba(255, 255, 255, 0.1);
}

.modal-thumbnails::-webkit-scrollbar {
  height: 6px;
}

.modal-thumbnails::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
}

.modal-thumbnails::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.modal-thumbnail {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 3px solid transparent;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.modal-thumbnail:hover {
  border-color: var(--color-primary-light);
  transform: scale(1.1);
}

.modal-thumbnail.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary);
}

/* Gallery Item Enhancements */
.gallery-item {
  cursor: pointer;
  position: relative;
}

.gallery-item .project-overlay {
  transition: all var(--transition-base);
}

.gallery-item:hover .project-overlay {
  background: linear-gradient(135deg, rgba(28, 25, 23, 0.94) 0%, rgba(234, 88, 12, 0.88) 100%);
}

.view-gallery-icon {
  position: absolute;
  bottom: 20px;
  right: 20px;
  font-size: 2rem;
  background-color: var(--color-primary);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition-base);
}

.gallery-item:hover .view-gallery-icon {
  opacity: 1;
  transform: scale(1);
}

/* Modal Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive Gallery Modal */
@media (max-width: 768px) {
  .modal-close {
    top: 10px;
    right: 10px;
    font-size: 2rem;
    width: 40px;
    height: 40px;
  }
  
  .modal-nav {
    width: 45px;
    height: 45px;
    font-size: 2rem;
  }
  
  .modal-prev {
    left: 10px;
  }
  
  .modal-next {
    right: 10px;
  }
  
  .modal-content {
    max-width: 95%;
    max-height: 70%;
  }
  
  .modal-image {
    max-height: 60vh;
  }
  
  .modal-caption {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .modal-thumbnails {
    bottom: 10px;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    max-width: 95%;
  }
  
  .modal-thumbnail {
    width: 60px;
    height: 45px;
  }
  
  .view-gallery-icon {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    bottom: 15px;
    right: 15px;
  }
}

@media (max-width: 480px) {
  .modal-nav {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
  
  .modal-thumbnail {
    width: 50px;
    height: 38px;
  }
  
  .modal-content {
    max-height: 65%;
  }
}

/* ============================================
   PROGRESS BAR (Точка 6 - Интерактивност)
   ============================================ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  width: 0%;
  z-index: calc(var(--z-fixed) + 1);
  transition: width 200ms ease-out;
}

.progress-bar.hidden {
  display: none;
}

/* ============================================
   SCROLL TO TOP BUTTON (Точка 6 - Интерактивност)
   ============================================ */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-text-light);
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-fixed) - 10);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  outline: 3px solid transparent;
}

.scroll-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-to-top:focus {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

.scroll-to-top.show {
  display: flex;
}

@media (max-width: 768px) {
  .scroll-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .scroll-to-top {
    width: 40px;
    height: 40px;
    bottom: 15px;
    right: 15px;
    font-size: 1rem;
  }
  
  /* Adjust floating button for smaller screens */
  .floating-contact-btn {
    width: 50px;
    height: 50px;
    bottom: 80px;
  }
  
  .floating-contact-btn span {
    font-size: 1.25rem;
  }
}

/* ============================================
   MOBILE OPTIMIZATION (Точка 11 - Мобилна)
   ============================================ */
@media (touch: enabled) {
  /* Ensure touch targets are at least 44x44px */
  button, a, input[type="button"], input[type="submit"] {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav-link, .service-card, .project-card {
    min-height: 44px;
  }
}

/* Improve mobile navigation */
@media (max-width: 768px) {
  /* Better hamburger menu spacing */
  .nav-toggle {
    padding: var(--spacing-sm);
    margin: 0;
  }
  
  .nav-toggle span {
    height: 3px;
    width: 25px;
  }
  
  /* Larger touch targets for menu items */
  .nav-link {
    padding: var(--spacing-md) var(--spacing-sm);
    font-size: var(--font-size-base);
  }
  
  /* Improve form input sizes */
  .form-group input,
  .form-group textarea {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
    padding: var(--spacing-md);
  }
  
  /* Better button sizes */
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    min-height: 44px;
    font-size: var(--font-size-base);
  }
}

/* Landscape orientation improvements */
@media (max-height: 500px) and (orientation: landscape) {
  .hero-content {
    padding: var(--spacing-md) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-subtitle {
    display: none;
  }
}

/* ============================================
   ACCESSIBILITY & CONTRAST IMPROVEMENTS
   ============================================ */

/* Ensure sufficient contrast ratio (WCAG AA) */
.section-title {
  color: var(--color-secondary-dark);
  font-weight: 700;
}

/* Better button focus states for keyboard navigation */
.btn:focus,
button:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Improved link focus states */
a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Better form input focus */
input:focus,
textarea:focus,
select:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Improve contrast for hover states */
.nav-link:hover,
.footer-section a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Better color contrast on service cards */
.service-card {
  border: 1px solid #e0e0e0;
}

.service-card:hover {
  border-color: var(--color-primary);
}



/* ============================================
   BuilderHub2 — допълнения (портфолио CMS + контактна форма)
   ============================================ */
.preview-banner {
  position: fixed; top: 0; left: 0; right: 0; z-index: 2000;
  background: var(--color-accent); color: var(--color-secondary-dark); text-align: center;
  font-size: .85rem; font-weight: 600; padding: 6px 12px;
}
.project-filters {
  display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; margin-bottom: 2.5rem;
}
.filter-btn {
  border: 1.5px solid var(--color-primary); background: transparent;
  color: var(--color-primary); padding: .45rem 1.1rem; border-radius: var(--radius-full);
  font-size: .9rem; font-weight: 600; cursor: pointer; transition: all var(--transition-fast);
}
.filter-btn:hover { background: rgba(234, 88, 12, .08); }
.filter-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.project-card { cursor: pointer; }
.project-meta { display:block; font-size: .8rem; opacity: .9; margin-top: .35rem; }
.header.scrolled { box-shadow: 0 2px 18px rgba(0,0,0,.08); }
.scroll-to-top { opacity: 0; pointer-events: none; transition: opacity var(--transition-base); }
.scroll-to-top.visible { opacity: 1; pointer-events: auto; }
.projects-empty { text-align: center; color: var(--color-text-secondary); padding: 3rem 1rem; }

/* -------- Hero: топъл тъмен фон + блед тематичен образ + фина мрежа -------- */
.hero {
  background-color: #1C1917;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 0H0V48' fill='none' stroke='%23ffffff' stroke-opacity='0.05' stroke-width='1'/%3E%3C/svg%3E"),
    radial-gradient(circle at 15% 20%, rgba(234, 88, 12, .30), transparent 45%),
    radial-gradient(circle at 85% 78%, rgba(245, 158, 11, .22), transparent 40%),
    linear-gradient(135deg, #292524 0%, #1C1917 100%);
  background-size: 48px 48px, auto, auto, auto;
  background-attachment: scroll;
}
/* тематичен образ (снимка от портфолиото) */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: var(--hero-image, none);
  background-size: cover;
  background-position: center;
  opacity: .55;
  filter: grayscale(.12) contrast(1.05) brightness(.92) saturate(1.05);
  pointer-events: none;
}
.hero::before {
  z-index: 1;
  background: linear-gradient(160deg, rgba(28,25,23,.35) 0%, rgba(28,25,23,.62) 55%, rgba(28,25,23,.72) 100%);
}

/* -------- Контактна форма -------- */
.contact-form {
  background: var(--color-bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,0,0,.05);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}
.contact-form .form-row { display: flex; flex-direction: column; gap: .4rem; }
.contact-form .form-row.full { grid-column: 1 / -1; }
.contact-form label {
  font-weight: 600; font-size: var(--font-size-sm); color: var(--color-text-primary);
}
.contact-form label .opt { font-weight: 400; color: var(--color-text-secondary); }
/* honeypot — извън екрана, недостъпно за хора и екранни четци */
.contact-form .hp-field {
  position: absolute; left: -9999px; width: 1px; height: 1px;
  overflow: hidden; opacity: 0;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: .75rem .9rem;
  border: 1.5px solid #E7E2DC;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  background: var(--color-bg-secondary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, .12);
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form .btn { grid-column: 1 / -1; width: 100%; padding: .9rem; font-size: var(--font-size-lg); }
.contact-form .form-note {
  grid-column: 1 / -1; margin: 0; font-size: var(--font-size-sm); font-weight: 500; min-height: 1.2em;
}
.contact-form .form-note.ok { color: var(--color-success); }
.contact-form .form-note.err { color: var(--color-danger); }

.contact-info { gap: var(--spacing-md); }
.contact-info .contact-item {
  display: flex; align-items: center; gap: .75rem;
  font-size: var(--font-size-lg); padding: var(--spacing-sm) var(--spacing-md);
}
.contact-info .contact-item a { color: var(--color-text-primary); font-weight: 600; }
.contact-info .contact-item a:hover { color: var(--color-primary); }
.contact-info > p:last-child { color: var(--color-text-secondary); padding: 0 var(--spacing-md); }

@media (max-width: 640px) {
  .contact-form { grid-template-columns: 1fr; }
}