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

:root {
    --bg-color: #121212; /* slightly darker for docs */
    --card-bg: #1e1e1e;
    --card-border: #333333;
    --primary-text-color: #e7e7e7;
    --secondary-text: #a0a0a0;
    --accent-color: #64ffda;
    --quicksand-font-family: 'Quicksand', sans-serif;
}

html, body {
    width: 100%;
    min-height: 100vh;
    font-family: var(--quicksand-font-family);
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    line-height: 1.6;
}

/* Container for centered docs with blank margins */
.docs-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 20px;
}

.docs-header {
    margin-bottom: 50px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 30px;
}

.version-badge {
    display: inline-block;
    padding: 4px 12px;
    background-color: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.subtitle {
    color: var(--secondary-text);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 5px;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #fff;
}

.description {
    font-size: 1.2rem;
    color: var(--secondary-text);
    margin-bottom: 20px;
}

.back-link {
    display: inline-block;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
}

.back-link:hover {
    opacity: 0.8;
}

.docs-section {
    margin-bottom: 60px;
}

.docs-section h2 {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 10px;
}

.docs-section h3 {
    font-size: 1.3rem;
    color: #fff;
    margin-top: 30px;
    margin-bottom: 15px;
}

.docs-section p {
    margin-bottom: 15px;
    color: var(--secondary-text);
}

.docs-section ul {
    margin-bottom: 20px;
    padding-left: 20px;
    color: var(--secondary-text);
}

.docs-section li {
    margin-bottom: 8px;
}

.docs-section code {
    background-color: var(--card-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
    color: var(--accent-color);
}

pre {
    background-color: #000;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin-top: 10px;
    border: 1px solid var(--card-border);
}

pre code {
    background-color: transparent;
    padding: 0;
    color: #e7e7e7;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

table td {
    padding: 15px;
    border-bottom: 1px solid var(--card-border);
    color: var(--secondary-text);
}

table tr td:first-child {
    color: #fff;
    width: 30%;
    font-weight: 500;
}

/* Highlight Section */
.highlight-section h2 {
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.architecture-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.architecture-card:hover {
    transform: translateY(-5px);
    border-color: #555;
}

.architecture-card h3 {
    margin-top: 0;
    color: #fff;
}

/* Hover-to-reveal cards for Data Model */
.reveal-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    margin-bottom: 20px;
    overflow: hidden;
}

.reveal-header {
    padding: 20px 25px;
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: default;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.reveal-hint {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--accent-color);
    background-color: rgba(100, 255, 218, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
}

.reveal-content {
    max-height: 0;
    opacity: 0;
    padding: 0 25px;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.reveal-card:hover .reveal-header {
    border-bottom: 1px solid var(--card-border);
}

.reveal-card:hover .reveal-content {
    max-height: 500px;
    opacity: 1;
    padding: 20px 25px 25px 25px;
}

/* Footer */
.docs-footer {
    margin-top: 80px;
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
    color: var(--secondary-text);
    font-size: 0.9rem;
}