:root {
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-primary: #6366f1;
  /* Indigo */
  --accent-secondary: #8b5cf6;
  /* Violet */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --card-bg: #ffffff;
  --nav-bg: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --bg-primary: #020617;
  --bg-secondary: #0f172a;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-primary: #818cf8;
  --accent-secondary: #a78bfa;
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --card-bg: #1e293b;
  --nav-bg: rgba(2, 6, 23, 0.8);
}

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

body {
  font-family: 'Outfit', 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navbar */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo img {
  height: 40px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

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

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

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  background: radial-gradient(circle at top right, var(--accent-primary) 0%, transparent 40%),
    radial-gradient(circle at bottom left, var(--accent-secondary) 0%, transparent 40%);
  overflow: hidden;
}

/* Dark mode specific hero background */
[data-theme="dark"] .hero {
  background: linear-gradient(135deg, #020617 0%, #0f172a 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('img/hero.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
  pointer-events: none;
}

[data-theme="dark"] .hero::before {
  opacity: 0.4;
}

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

.hero h1 {
  font-size: 4.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeUp 0.8s ease-out;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  animation: fadeUp 1s ease-out;
}

.cta-group {
  display: flex;
  gap: 1rem;
  animation: fadeUp 1.2s ease-out;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
}

.btn-outline {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
}

/* Efficiency Section */
.efficiency {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.efficiency-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.efficiency-image {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.efficiency-image img {
  width: 100%;
  display: block;
  transition: transform 0.5s ease;
}

.efficiency-image:hover img {
  transform: scale(1.05);
}

.efficiency-text h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.efficiency-text p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* Feature Cards */
.features {
  padding: 120px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card,
.service-card,
.testimonial-card {
  padding: 3rem;
  background: var(--card-bg);
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card:hover,
.service-card:hover,
.testimonial-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.testimonial-card {
  padding: 2.5rem;
  border-left: 4px solid var(--accent-primary);
}

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

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--bg-secondary);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 968px) {
  .hero h1 {
    font-size: 3rem;
  }

  .efficiency-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .nav-links {
    display: none;
  }
}

footer {
  padding: 60px 0;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  color: var(--text-secondary);
}