:root {
  --bg-primary: #080812;
  --bg-secondary: #0f0f1e;
  --bg-card: #15152a;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --accent-1: #00d4ff;
  --accent-2: #7b2ff7;
  --accent-gradient: linear-gradient(135deg, #00d4ff, #7b2ff7);
  --border: #1e1e35;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(8, 8, 18, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switcher {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border-radius: 20px;
  padding: 3px;
  border: 1px solid var(--border);
}

.lang-btn {
  padding: 4px 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 16px;
  transition: var(--transition);
  font-family: inherit;
}

.lang-btn.active {
  background: var(--accent-gradient);
  color: white;
}

.lang-btn:hover:not(.active) {
  color: var(--text-primary);
}

.btn-primary {
  padding: 10px 24px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(123, 47, 247, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero h1 span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 550px;
  line-height: 1.7;
}

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

.btn-secondary {
  padding: 10px 24px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-secondary:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
}

.hero-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  max-width: 500px;
  z-index: 0;
  opacity: 0.4;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.section-accent {
  background: var(--bg-secondary);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(123, 47, 247, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

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

/* How It Works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.step-card {
  text-align: center;
  padding: 32px 24px;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
  margin: 0 auto 20px;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.step-connector {
  display: none;
}

/* Materials */
.materials-content {
  display: flex;
  gap: 40px;
  align-items: center;
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.material-icon {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.material-info h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.material-info > p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.material-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.material-features li {
  padding: 6px 14px;
  background: rgba(123, 47, 247, 0.1);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent-1);
}

/* Portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

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

.portfolio-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.portfolio-img {
  height: 220px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.img-placeholder {
  color: var(--text-secondary);
  font-size: 0.85rem;
  opacity: 0.5;
}

.portfolio-info {
  padding: 20px;
}

.portfolio-info h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.portfolio-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 12px;
  line-height: 1.5;
}

.portfolio-price {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-1);
}

/* Image Gallery */
.img-gal {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.img-gal-track img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.img-gal-track img:first-child {
  position: relative;
}

.gal-prev, .gal-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(8, 8, 18, 0.8);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: var(--transition);
  opacity: 0;
}

.portfolio-img:hover .gal-prev,
.portfolio-img:hover .gal-next {
  opacity: 1;
}

.gal-prev { left: 8px; }
.gal-next { right: 8px; }

.gal-prev:hover, .gal-next:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--accent-1);
}

.gal-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.gal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: var(--transition);
}

.gal-dot.active {
  background: var(--accent-1);
  transform: scale(1.3);
}

/* Delivery Notice */
.delivery-notice {
  background: var(--bg-card);
  border: 1px solid var(--accent-1);
  border-radius: var(--radius);
  padding: 20px 28px;
  margin-bottom: 24px;
}

.delivery-notice h3 {
  color: var(--accent-1);
  font-size: 1rem;
  margin-bottom: 6px;
}

.delivery-notice p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.min-order-badge {
  display: inline-block;
  background: rgba(255, 170, 0, 0.15);
  color: #ffaa00;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 24px;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}

.faq-question span {
  font-size: 1.2rem;
  transition: transform 0.3s;
  color: var(--accent-1);
}

.faq-item.open .faq-question span {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* Contact */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.contact-detail .icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

.contact-form .btn-primary {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.form-message {
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(0, 255, 100, 0.1);
  color: #00d475;
  border: 1px solid rgba(0, 255, 100, 0.2);
}

.form-message.error {
  display: block;
  background: rgba(255, 50, 50, 0.1);
  color: #ff5050;
  border: 1px solid rgba(255, 50, 50, 0.2);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-1);
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: var(--transition);
    border-left: 1px solid var(--border);
  }

  .nav-links.active {
    right: 0;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-visual {
    display: none;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .materials-content {
    flex-direction: column;
    text-align: center;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 60px 0;
  }
}