:root {
  --bg-color: #0b0e14;
  --surface-color: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.1);
  --primary-color: #00e5ff;
  --primary-glow: rgba(0, 229, 255, 0.4);
  --secondary-color: #3f51b5;
  --text-main: #f8f9fa;
  --text-muted: #a0aec0;
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(11, 14, 20, 0.6);
  --success-color: #28a745;
  --error-color: #ff4757;
  --transition: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* Background Glowing Orbs */
body::before, body::after {
  content: '';
  position: absolute;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  opacity: 0.3;
  pointer-events: none;
}

body::before {
  top: -10vw;
  left: -20vw;
  background: var(--secondary-color);
}

body::after {
  bottom: 20vh;
  right: -20vw;
  background: var(--primary-color);
}

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

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* Glass Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: padding var(--transition);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 5%;
  max-width: 1400px;
  margin: auto;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}

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

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links li a {
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  transition: color var(--transition);
}

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

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

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.8rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 5% 2rem;
  background: url('../assets/hero_truck.png') no-repeat center center/cover;
  background-attachment: fixed;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to bottom, rgba(11, 14, 20, 0.4) 0%, rgba(11, 14, 20, 0.95) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  padding: 4rem 2rem;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.hero-content h1 {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #fff, var(--primary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.3rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: #fff;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--glass-border);
  box-shadow: none;
  backdrop-filter: blur(5px);
  margin-left: 1.5rem;
}

.btn-outline:hover {
  background: var(--surface-hover);
  border-color: var(--primary-color);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.2);
}

/* Typography & Layout */
section {
  padding: 8rem 5%;
  max-width: 1400px;
  margin: auto;
  position: relative;
}

.section-title {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 4rem;
}

.section-title span {
  color: var(--primary-color);
}

/* Glass Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.service-card {
  background: var(--surface-color);
  border: 1px solid var(--glass-border);
  padding: 3rem 2rem;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-10px);
  background: var(--surface-hover);
  border-color: var(--primary-color);
  box-shadow: 0 15px 35px rgba(0,0,0,0.3), 0 0 20px rgba(0, 229, 255, 0.1);
}

.service-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #fff;
}

.service-card p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.service-card a {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap var(--transition);
}

.service-card a:hover {
  gap: 12px;
}

/* About Split Layout */
.about-split {
  display: flex;
  align-items: center;
  gap: 5rem;
}

.about-text {
  flex: 1;
}

.about-text h2 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.about-list {
  list-style: none;
  margin-top: 2rem;
  margin-bottom: 2.5rem;
}

.about-list li {
  margin-bottom: 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--text-muted);
}

.about-list li svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--primary-color);
}

.about-image {
  flex: 1;
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.about-image::before {
  content: '';
  position: absolute;
  inset: -10px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  z-index: -1;
  border-radius: 30px;
  opacity: 0.3;
  filter: blur(20px);
}

/* Features List */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-item {
  background: var(--surface-color);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--primary-color);
  transition: transform var(--transition);
}

.feature-item:hover {
  transform: translateX(10px);
  background: var(--surface-hover);
}

.feature-item h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.feature-item p {
  color: var(--text-muted);
}

/* Testimonials */
.testimonials-section {
  position: relative;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}

.testimonial-card {
  background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  padding: 3rem 2rem;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 6rem;
  color: var(--primary-color);
  opacity: 0.2;
  font-family: serif;
}

.testimonial-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  color: var(--primary-color);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 15px;
}

.testimonial-author::before {
  content: '';
  width: 30px;
  height: 2px;
  background: var(--primary-color);
}

/* Contact Page */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
}

.contact-info {
  background: var(--surface-color);
  border: 1px solid var(--glass-border);
  padding: 3rem;
  border-radius: 24px;
}

.contact-info h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 3rem;
}

.info-block {
  margin-bottom: 2rem;
}

.info-block h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.info-block p {
  color: var(--text-muted);
}

.contact-form {
  background: var(--surface-color);
  border: 1px solid var(--glass-border);
  padding: 4rem 3rem;
  border-radius: 24px;
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 2rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.form-group input, .form-group textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  color: #fff;
  padding: 1.2rem;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
  background: rgba(0, 0, 0, 0.4);
}

.form-group textarea {
  height: 180px;
  resize: vertical;
}

.form-status {
  margin-top: 1.5rem;
  padding: 1.2rem;
  border-radius: 12px;
  display: none;
  text-align: center;
}

.form-status.success {
  display: block;
  background: rgba(40, 167, 69, 0.1);
  border: 1px solid var(--success-color);
  color: var(--success-color);
}

.form-status.error {
  display: block;
  background: rgba(255, 71, 87, 0.1);
  border: 1px solid var(--error-color);
  color: var(--error-color);
}

/* Footer */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 5rem 5% 2rem;
  background: rgba(0,0,0,0.3);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  max-width: 1400px;
  margin: auto;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 4rem;
  margin-bottom: 2rem;
}

.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-section h4 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-section h4 span {
  color: var(--primary-color);
}

.footer-section p {
  color: var(--text-muted);
}

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

.footer-section ul li {
  margin-bottom: 1rem;
}

.footer-section ul li a {
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive */
@media (max-width: 992px) {
  .hero-content h1 { font-size: 3rem; }
  .about-split { flex-direction: column; }
  .contact-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-150%);
    transition: transform var(--transition);
    opacity: 0;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }
  
  .mobile-menu-btn { display: block; }
  .hero-content { padding: 3rem 1.5rem; }
  .hero-content h1 { font-size: 2.5rem; }
  section { padding: 5rem 5%; }
}