/* EURO KAMENÁRSTVO – Moderný responzívny dizajn */
:root {
  --primary: #1a1a1a;
  --secondary: #2c2c2c;
  --accent: #8b7355;
  --accent-light: #a68b6a;
  --gold: #c9a227;
  --text: #e8e8e8;
  --text-muted: #b0b0b0;
  --white: #ffffff;
  --bg-light: #f5f5f5;
  --card-bg: #252525;
  --border: #3a3a3a;
  --shadow: 0 10px 40px rgba(0,0,0,0.4);
  --radius: 12px;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--primary);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: var(--transition);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== HEADER ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
  letter-spacing: 0.5px;
}

.logo span {
  color: var(--gold);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--white);
  background: rgba(201, 162, 39, 0.15);
}

.nav a.active {
  color: var(--gold);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 8px;
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 50%, #1a1a1a 100%);
  padding: 120px 20px 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(139, 115, 85, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(201, 162, 39, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero h1 span {
  color: var(--gold);
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #a8841a);
  color: #1a1a1a;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(201, 162, 39, 0.4);
  color: #1a1a1a;
}

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

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ========== SECTIONS ========== */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--white);
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section-title .line {
  width: 60px;
  height: 3px;
  background: var(--gold);
  margin: 16px auto 0;
  border-radius: 2px;
}

/* ========== SERVICES ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(139, 115, 85, 0.2), rgba(201, 162, 39, 0.15));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.service-card h3 {
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 10px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========== GALLERY ========== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  background: var(--secondary);
  border: 1px solid var(--border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .overlay {
  opacity: 1;
}

.gallery-item .overlay span {
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ========== LIGHTBOX ========== */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 95vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
  transition: var(--transition);
  z-index: 10;
}

.lightbox-close:hover {
  opacity: 1;
  color: var(--gold);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--white);
  font-size: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-nav:hover {
  background: rgba(201, 162, 39, 0.3);
}

.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }

/* ========== CONTACT / LOCATIONS ========== */
.locations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.location-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.location-card:hover {
  border-color: var(--accent);
}

.location-card h3 {
  color: var(--gold);
  margin-bottom: 16px;
  font-size: 1.15rem;
}

.location-card p {
  color: var(--text-muted);
  margin-bottom: 8px;
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.location-card a {
  color: var(--accent-light);
}

.location-card a:hover {
  color: var(--gold);
}

/* ========== ABOUT ========== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.about-text ul {
  list-style: none;
  margin-top: 20px;
}

.about-text ul li {
  padding: 8px 0;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
}

.about-text ul li::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.7rem;
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
  background: var(--secondary);
}

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

/* ========== MATERIALS ========== */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.material-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
  transition: var(--transition);
}

.material-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.material-swatch {
  height: 120px;
  background: linear-gradient(135deg, #4a4a4a, #2a2a2a);
}

.material-card h4 {
  padding: 14px;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
}

/* ========== FOOTER ========== */
.footer {
  background: #111;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer h4 {
  color: var(--gold);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.footer p, .footer a {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 8px;
  display: block;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== CONTACT FORM ========== */
.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

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

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

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav a {
    width: 100%;
    padding: 14px 16px;
    text-align: left;
  }

  .hero {
    min-height: 70vh;
    padding: 100px 20px 60px;
  }

  .section {
    padding: 60px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .lightbox-nav {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
}

/* Utility */
.text-center { text-align: center; }
.mt-4 { margin-top: 32px; }
.mb-4 { margin-bottom: 32px; }