:root {
  --bg-color: #050505;
  --surface-color: #121212;
  --primary-color: #00f0ff;
  --secondary-color: #7000ff;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --font-family: 'Inter', sans-serif;
  --transition-speed: 0.3s;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.05em;
}

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

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

/* Fallbacks for Images */
img {
  font-style: italic;
  color: var(--text-secondary);
  background-color: var(--surface-color);
  display: block;
}
.logo-fallback {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 1px;
  color: #fff;
}
.logo-fallback span {
  color: var(--primary-color);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo img {
  height: 40px;
  width: auto;
  background-color: transparent;
}

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

.nav-links a {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  position: relative;
  padding-bottom: 5px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width var(--transition-speed);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  cursor: pointer;
  font-size: 1.8rem;
  color: var(--primary-color);
  user-select: none;
}

/* Main Content */
main {
  padding-top: 100px;
  min-height: calc(100vh - 150px);
}

/* Footer */
footer {
  padding: 4rem 5% 2rem;
  background-color: var(--surface-color);
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 5rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-links a {
  margin: 0 1rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border: none;
  border-radius: 30px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
  z-index: -1;
  transition: opacity var(--transition-speed);
  opacity: 0;
  border-radius: 30px;
}

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

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 240, 255, 0.25);
  color: #fff;
}

/* Hero Section */
.hero {
  height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 5%;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  width: 40vw;
  height: 40vw;
  max-width: 500px;
  max-height: 500px;
  background: var(--secondary-color);
  filter: blur(120px);
  border-radius: 50%;
  z-index: -1;
  opacity: 0.4;
  animation: pulse 12s infinite alternate;
}

@keyframes pulse {
  0% { transform: scale(1) translate(0, 0); opacity: 0.3; }
  100% { transform: scale(1.2) translate(50px, -50px); opacity: 0.6; }
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
}

.hero h1 span {
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin-bottom: 3rem;
}

/* Sections General */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
}

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

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  padding: 0 5%;
}

.service-card {
  background: var(--surface-color);
  padding: 3rem 2rem;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-speed), border-color var(--transition-speed);
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-speed);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 255, 255, 0.15);
}

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

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
  padding: 0 5%;
}

.portfolio-item {
  border-radius: 15px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.portfolio-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to top, rgba(0,0,0,0.9), rgba(0,0,0,0.2));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity var(--transition-speed);
}

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

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

.portfolio-overlay h3 {
  font-size: 1.8rem;
  margin-bottom: 0.3rem;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.portfolio-overlay p {
  color: var(--primary-color);
  font-weight: 500;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) 0.05s;
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p {
  transform: translateY(0);
}

/* Contact Section */
.contact-container {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  padding: 0 5%;
}

.contact-info {
  flex: 1;
  min-width: 300px;
}

.contact-info h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  font-size: 1.1rem;
}

.info-item {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.info-item .icon {
  font-size: 1.5rem;
  margin-right: 1.5rem;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.contact-form {
  flex: 1.5;
  min-width: 300px;
  background: var(--surface-color);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea,
.form-select {
  width: 100%;
  padding: 1.2rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color var(--transition-speed), background var(--transition-speed);
}

.form-select {
  appearance: none;
  cursor: pointer;
}
.form-select option {
  color: #000; /* Contrast for dropdown options */
}

.form-group input:focus,
.form-group textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.06);
}

.form-group textarea {
  height: 160px;
  resize: vertical;
}

/* Animations using classes */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

/* Responsive */
@media (max-width: 900px) {
  .contact-container {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-color);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: left 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  }
  
  .nav-links.active {
    left: 0;
  }

  .nav-links a {
    font-size: 1.2rem;
  }
  
  .hero h1 {
    font-size: 3rem;
  }
}