/* General Reset & Body */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #37352f;
    background-color: #ffffff;
    font-size: 16px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 40px;
    min-height: 100vh;
}

/* Back Button */
.back-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #6b7280;
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 40px;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.back-button:hover {
    background-color: #f3f4f6;
    color: #374151;
}

/* Project Title */
.project-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    color: #111827;
    margin-bottom: 48px;
    letter-spacing: -0.02em;
}

/* Section Styling */
.section {
    margin-bottom: 48px;
}

.section-header {
    font-size: 24px;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid #e5e7eb;
}

.section-content {
    font-size: 16px;
    line-height: 1.7;
    color: #4b5563;
}

.section-content ul {
    list-style: none;
    padding: 0;
}

.section-content li {
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
}

.section-content li::before {
    content: "•";
    color: #6366f1;
    font-size: 18px;
    font-weight: bold;
    position: absolute;
    left: 0;
    top: 0;
}

.section-content p {
    margin-bottom: 16px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 40px 24px;
    }

    .project-title {
        font-size: 32px;
        margin-bottom: 36px;
    }

    .section-header {
        font-size: 20px;
    }

    .section-content {
        font-size: 15px;
    }

    .section {
        margin-bottom: 36px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 24px 16px;
    }

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

    .section-header {
        font-size: 18px;
    }
}

/* Clean focus styles */
.back-button:focus {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

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

/* Selection styling */
::selection {
    background-color: #e0e7ff;
    color: #1e40af;
}

.mermaid {
    display: block;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    max-width: 100%;
}