:root {
  /* Colors - Deep Navy, Slate Grey, Electric Blue */
  --bg-dark: #050b18;
  --bg-card: #0d1526;
  --bg-accent: #162440;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --accent-blue: #00e5ff;
  --accent-blue-dim: rgba(0, 229, 255, 0.1);
  --accent-gold: #ffd700; /* Atmanirbhar Bharat accent */
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(13, 21, 38, 0.8);
  
  /* Typography */
  --font-main: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.gradient-text {
  background: linear-gradient(90deg, #fff, var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

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

.logo {
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-blue);
  clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s ease;
}

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

.dropdown {
  position: relative;
}

.dropdown-content {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  min-width: 220px;
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  padding: 1rem 0;
}

.dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-content a {
  padding: 0.75rem 1.5rem;
  display: block;
  text-transform: none;
}

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

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 70% 30%, var(--accent-blue-dim) 0%, transparent 50%);
  z-index: -1;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  font-size: 4.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

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

.badge-atmanirbhar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 215, 0, 0.1);
  border: 1px solid var(--accent-gold);
  border-radius: 4px;
  color: var(--accent-gold);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--bg-dark);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 229, 255, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  margin-left: 1rem;
}

.btn-outline:hover {
  background: var(--border-color);
}

/* Sections */
section {
  padding: 8rem 0;
}

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

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

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

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  position: relative;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  overflow: hidden;
}

.card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-10px);
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--accent-blue);
  transition: height 0.3s ease;
}

.card:hover::after {
  height: 100%;
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-blue);
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

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

/* Footer */
footer {
  background: #02060f;
  padding: 6rem 0 3rem;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-info h4 {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Specific component: Placeholder Image */
.placeholder-image {
  width: 100%;
  background: var(--bg-accent);
  aspect-ratio: 16/9;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.placeholder-image::before {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 45%, rgba(0, 229, 255, 0.05) 50%, transparent 55%);
  animation: shine 10s infinite linear;
}

@keyframes shine {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Capability Section Specific */
.capability-item {
  display: flex;
  gap: 3rem;
  align-items: center;
  margin-bottom: 6rem;
}

.capability-item:nth-child(even) {
  flex-direction: row-reverse;
}

.capability-content {
  flex: 1;
}

.capability-visual {
  flex: 1;
}

/* Tech Grid Pattern */
.tech-grid {
  background-image: 
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  padding: 3rem;
  border: 1px solid var(--border-color);
}

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

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  background: var(--bg-accent);
  border: 1px solid var(--border-color);
  padding: 1rem;
  color: var(--text-primary);
  font-family: inherit;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

textarea.form-input {
  min-height: 150px;
  resize: vertical;
}