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

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #4a90e2;
    --light-blue: #e8f4f8;
    --text-dark: #2c2c2c;
    --text-light: #666;
    --white: #ffffff;
    --overlay: rgba(255, 255, 255, 0.85);
    --serif-font: 'Playfair Display', serif;
    --sans-font: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Header and Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    padding: 20px 0;
    transition: background 0.3s ease;
}

.header.scrolled {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.nav-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.nav-list a {
    font-family: var(--serif-font);
    font-size: 18px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-list a:hover {
    color: var(--secondary-color);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-list a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('https://images.unsplash.com/photo-1522071820081-009f0129c71c?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    filter: blur(0px);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--overlay);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 100px 20px 40px;
}

.hero-title {
    font-family: var(--serif-font);
    font-size: 64px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-family: var(--serif-font);
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.scroll-indicator {
    margin-top: 40px;
    animation: bounce 2s infinite;
    color: var(--primary-color);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Stats Section */
.stats-section {
    background: var(--light-blue);
    padding: 80px 20px;
    text-align: center;
}

.section-title {
    font-family: var(--sans-font);
    font-size: 42px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 60px;
    text-align: center;
}

.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.stat-item {
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.stat-number {
    font-family: var(--serif-font);
    font-size: 48px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.5;
}

/* Startups Section */
.startups-section {
    padding: 80px 20px;
    background: var(--white);
}

.startups-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
}

.startup-item {
    aspect-ratio: 1;
    background: var(--light-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.startup-item:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.startup-logo {
    font-family: var(--sans-font);
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    padding: 20px;
}

/* About Section */
.about-section {
    padding: 80px 20px;
    background: #f8f9fa;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
}

/* Syllabus Section */
.syllabus-section {
    padding: 80px 20px;
    background: var(--white);
}

.syllabus-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.syllabus-item {
    background: var(--light-blue);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.syllabus-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.syllabus-week {
    font-family: var(--serif-font);
    font-size: 36px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.syllabus-title {
    font-family: var(--sans-font);
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.syllabus-description {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-light);
}

/* Contact Section */
.contact-section {
    padding: 80px 20px;
    background: #f8f9fa;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.contact-item h3 {
    font-family: var(--serif-font);
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-item p {
    font-size: 18px;
    color: var(--text-dark);
    line-height: 1.8;
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

    .contact-item a:hover {
        color: var(--primary-color);
        text-decoration: underline;
    }

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background-color: var(--white);
    margin: auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
    position: relative;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    color: var(--text-light);
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    background: rgba(0, 0, 0, 0.05);
}

.modal-close:hover {
    color: var(--primary-color);
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(90deg);
}

.modal-header {
    padding: 40px 40px 20px;
    border-bottom: 2px solid var(--light-blue);
}

.modal-title {
    font-family: var(--serif-font);
    font-size: 36px;
    color: var(--primary-color);
    margin: 0;
}

.modal-body {
    padding: 30px 40px 40px;
}

.startup-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.info-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-color);
}

.startup-description {
    margin-top: 30px;
}

.startup-description h3 {
    font-family: var(--serif-font);
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.startup-description p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
    text-align: justify;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 30px 20px;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 24px;
    }

    .section-title {
        font-size: 32px;
    }

    .nav-list {
        gap: 20px;
    }

    .nav-list a {
        font-size: 16px;
    }

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

    .startups-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .section-title {
        font-size: 28px;
    }

    .stat-number {
        font-size: 36px;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .modal-header {
        padding: 30px 20px 15px;
    }

    .modal-title {
        font-size: 28px;
    }

    .modal-body {
        padding: 20px;
    }

    .startup-info-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .startup-description h3 {
        font-size: 20px;
    }

    .startup-description p {
        font-size: 14px;
    }
}