/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Color Variables */
:root {
    --teal-primary: #2d9caa;
    --teal-dark: #1f7a85;
    --purple: #8b5cf6;
    --orange: #f97316;
    --green: #10b981;
    --light-gray: #f8f9fa;
    --medium-gray: #6b7280;
    --dark-gray: #374151;
}

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

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

.nav-logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--teal-primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--teal-primary);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.teal-text {
    color: var(--teal-primary);
}

.black-text {
    color: #333;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    background: var(--teal-primary);
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: background 0.3s ease;
}

.cta-button:hover {
    background: var(--teal-dark);
}

.hero-logo {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 2rem;
}

.logo-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark-gray);
    text-align: center;
    margin-bottom: 3rem;
}

/* Mission Section */
.mission {
    background: white;
}

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

.mission-text {
    font-size: 1.2rem;
    color: var(--medium-gray);
    line-height: 1.8;
}

.mission-image {
    text-align: center;
}

.students-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
}

.image-caption {
    font-size: 0.9rem;
    color: var(--medium-gray);
    font-style: italic;
    margin: 0;
}

/* Innovation Section */
.innovation {
    background: var(--light-gray);
}

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.innovation-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    border-left: 5px solid;
    transition: transform 0.3s ease;
}

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

.purple-card {
    border-left-color: var(--purple);
}

.orange-card {
    border-left-color: var(--orange);
}

.green-card {
    border-left-color: var(--green);
}

.innovation-card h3 {
    font-size: 1.5rem;
    color: var(--teal-primary);
    margin-bottom: 1rem;
}

.innovation-card p {
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.learn-more {
    color: var(--teal-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.learn-more:hover {
    color: var(--teal-dark);
}

/* Journey Section */
.journey {
    background: white;
}

.journey-content {
    max-width: 800px;
    margin: 0 auto;
}

.journey-subtitle {
    font-size: 1.8rem;
    color: var(--teal-primary);
    margin: 2.5rem 0 1.5rem;
}

.journey-content p {
    font-size: 1.1rem;
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.author-signature {
    font-style: italic;
    text-align: right;
    margin-top: 2rem;
    color: var(--teal-primary);
}

/* Survey Section */
.survey {
    background: var(--teal-primary);
    color: white;
    text-align: center;
}

.survey-title {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.survey-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.survey .cta-button {
    background: white;
    color: var(--teal-primary);
}

.survey .cta-button:hover {
    background: #f8f9fa;
}

/* Thanks Section */
.thanks {
    background: var(--light-gray);
    text-align: center;
}

.thanks p {
    font-size: 1.1rem;
    color: var(--medium-gray);
    max-width: 800px;
    margin: 0 auto 1.5rem;
    line-height: 1.8;
}

.thanks strong {
    color: var(--teal-primary);
}

/* Contact Section */
.contact {
    background: white;
    text-align: center;
}

.contact p {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
}

.contact-email {
    font-size: 1.3rem;
}

.contact-email a {
    color: var(--teal-primary);
    text-decoration: none;
    font-weight: 600;
}

.contact-email a:hover {
    text-decoration: underline;
}

/* Visionaries Section */
.visionaries {
    background: white;
}

.visionaries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.visionary-card {
    background: var(--light-gray);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.visionary-image {
    height: 200px;
    background: var(--teal-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.image-placeholder {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    padding: 20px;
}

.visionary-content {
    padding: 2rem;
}

.visionary-content h3 {
    font-size: 1.4rem;
    color: var(--teal-primary);
    margin-bottom: 0.5rem;
}

.visionary-note {
    font-style: italic;
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.visionary-content p {
    color: var(--medium-gray);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.visionary-content p:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .innovation-grid {
        grid-template-columns: 1fr;
    }
    
    .mission-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .logo-image {
        width: 200px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 1rem 20px;
    }
    
    .hero {
        padding-top: 140px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}