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

html {
    height: 100%;
    width: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #4CAF50;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #4CAF50;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #4CAF50;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 100px 20px 0;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

/* Section Intro */
.section-intro {
  font-size: 1.2rem;
  text-align: center;
  margin-bottom: 3rem;
  color: #666;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.stat {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat h3 {
    font-size: 2.5rem;
    color: #4CAF50;
    margin-bottom: 10px;
}

.stat p {
    font-size: 1rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-top: 20px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(76, 175, 80, 0.3);
}

/* Impact Preview Section */
.impact-preview {
    background: white;
    padding: 80px 0;
}

.impact-preview h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.impact-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.impact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.impact-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.impact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.impact-card p {
    color: #666;
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    color: white;
}

.contact-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: #4CAF50;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    padding: 15px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.3);
}

.submit-btn {
    background: #4CAF50;
    color: white;
    padding: 15px;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #45a049;
}

/* About Page Styles */
.about-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.lead {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
    line-height: 1.6;
}

.timeline-section {
    background: white;
    padding: 80px 0;
}

.timeline-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: #4CAF50;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

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

.timeline-year {
    background: #4CAF50;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1.2rem;
    min-width: 80px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.timeline-content {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    margin: 0 30px;
    flex: 1;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.timeline-content h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

.technology-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 80px 0;
}

.technology-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.tech-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.tech-card:hover {
    transform: translateY(-5px);
}

.tech-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #4CAF50;
}

.tech-card p {
    color: #666;
    line-height: 1.6;
}

.impact-section {
    background: white;
    padding: 80px 0;
    text-align: center;
}

.impact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.impact-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.impact-stat {
    padding: 30px;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: #4CAF50;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: #666;
}

.impact-description {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
    line-height: 1.6;
}

.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 40px 0;
}

footer p {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 20px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        margin-left: 40px;
    }

    .timeline-content {
        margin: 20px 0 0 0;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .impact-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 10px;
    }

    .nav-logo {
        font-size: 1.5rem;
    }

    .nav-menu {
        gap: 15px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .container {
        padding: 0 15px;
    }
}