/* ===== CSS Variables ===== */
:root {
  --primary-color: #007BFF;
  --primary-dark: #0056b3;
  --primary-light: #66b2ff;
  --primary-glow: rgba(0, 123, 255, 0.4);
  --bg-dark: #0a0e1a;
  --bg-card: #111827;
  --bg-section-alt: #060a14;
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --glass-bg: rgba(17, 24, 39, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

/* ===== Section Titles ===== */
.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

section { padding: 100px 0; }

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
}

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

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: -0.5px;
}

.nav-logo span { color: var(--text-primary); }

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

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

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

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

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

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.3);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,14,26,0.9) 0%, rgba(0,123,255,0.15) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 540px;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 24px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.2));
  opacity: 0;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 40px var(--primary-glow);
}

.btn-primary:hover::before { opacity: 1; }

/* ===== Floating Shapes (Hero) ===== */
.hero-shapes {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  animation: float 8s ease-in-out infinite;
}

.shape-1 {
  width: 400px; height: 400px;
  background: var(--primary-color);
  top: -100px; right: -100px;
  animation-delay: 0s;
}

.shape-2 {
  width: 250px; height: 250px;
  background: var(--primary-light);
  bottom: 10%; right: 20%;
  animation-delay: 2s;
}

.shape-3 {
  width: 150px; height: 150px;
  background: var(--primary-color);
  bottom: 30%; left: 60%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(5deg); }
}

/* ===== About ===== */
.about { background: var(--bg-section-alt); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition);
  transform-style: preserve-3d;
  perspective: 800px;
}

.about-card:hover {
  transform: translateY(-8px) rotateX(4deg) rotateY(-2deg);
  border-color: var(--primary-color);
  box-shadow: 0 20px 60px rgba(0,123,255,0.12);
}

.about-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
}

.about-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* ===== Product Categories ===== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  transform-style: preserve-3d;
  perspective: 1000px;
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-12px) rotateY(4deg) rotateX(2deg);
  box-shadow: 0 30px 60px rgba(0,123,255,0.15), 0 0 0 1px var(--primary-color);
}

.category-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.category-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.category-card:hover .category-img img {
  transform: scale(1.12);
}

.category-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-card), transparent 50%);
}

.category-info {
  padding: 24px;
  text-align: center;
}

.category-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Services ===== */
.services { background: var(--bg-section-alt); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 820px;
  margin: 0 auto;
}

.service-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

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

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0,123,255,0.3);
  box-shadow: 0 20px 50px rgba(0,123,255,0.1);
}

.service-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(0,123,255,0.1);
  border: 2px solid rgba(0,123,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--primary-color);
  border-color: var(--primary-color);
  transform: scale(1.1) rotateY(180deg);
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

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

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group { position: relative; }

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(0,123,255,0.15);
}

.form-group textarea { resize: vertical; min-height: 140px; }

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
}

.form-status {
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
  line-height: 1.4;
  margin-top: 4px;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.5);
  color: #34d399;
}

.form-status.error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.5);
  color: #f87171;
}

.contact-info-block {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 40px;
}

.contact-info-block h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--primary-color);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.info-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(0,123,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.info-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.info-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.map-placeholder {
  margin-top: 24px;
  height: 180px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,123,255,0.08), rgba(0,123,255,0.02));
  border: 1px dashed rgba(0,123,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-section-alt);
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  text-align: center;
}

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

.footer a {
  color: var(--primary-color);
  transition: var(--transition);
}

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

/* ===== Scroll Animations ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== 3D Tilt Glow ===== */
.tilt-glow {
  position: relative;
}

.tilt-glow::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary-color), transparent, var(--primary-light));
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.tilt-glow:hover::before { opacity: 0.6; }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .about-grid,
  .services-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10,14,26,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 80px 40px;
    gap: 24px;
    transition: right 0.4s ease;
    border-left: 1px solid var(--glass-border);
  }

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

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

  .categories-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

  section { padding: 70px 0; }
}

@media (max-width: 480px) {
  .hero-content h1 { font-size: 2rem; }
  .categories-grid { grid-template-columns: 1fr; }
}