/* 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: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: white;
    min-height: 100vh;
}

/* Header */
header {
    text-align: center;
    padding: 40px 0;
    border-bottom: 3px solid #2563eb;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    color: #1e40af;
    margin-bottom: 10px;
}

.tagline {
    font-size: 1.1rem;
    color: #64748b;
    font-style: italic;
}

/* Main Content */
main {
    padding: 0 20px;
}

section {
    margin-bottom: 50px;
}

h2 {
    color: #1e40af;
    margin-bottom: 20px;
    font-size: 1.8rem;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 10px;
}

h3 {
    color: #334155;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

/* Project Cards */
.project-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    margin-bottom: 20px;
}

.project-card {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 25px;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    cursor: pointer;
}

.project-card-link:hover .project-card {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.project-card p {
    margin-bottom: 10px;
    color: #475569;
}

.project-links {
    margin: 20px 0;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.button-text {
    display: inline-block;
    background: #10b981;
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
}

.button {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

.button:hover {
    background: #1d4ed8;
}

.note {
    font-size: 0.9rem;
    color: #64748b;
    font-style: italic;
    margin-top: 15px;
    padding: 10px;
    background: #f1f5f9;
    border-left: 3px solid #2563eb;
    border-radius: 4px;
}

/* About Section */
.about p {
    color: #475569;
    font-size: 1.1rem;
}

.intro p {
    color: #475569;
    font-size: 1.1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
    border-top: 2px solid #e2e8f0;
    color: #64748b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    main {
        padding: 0 10px;
    }

    .project-links {
        flex-direction: column;
    }

    .button {
        text-align: center;
    }
}