/* ===== Base ===== */
body {
    background-color: #1F1F1F;
    font-family: 'Source Sans Pro', 'Open Sans', Helvetica, Arial, sans-serif;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    margin: 0;
    padding: 0;
    color: #333;
}

/* ===== Site Header ===== */
.site-header {
    background-color: #7070B0;
    color: rgba(255,255,255,0.88);
    text-align: center;
    padding: 32px 20px;
}

.site-header .site-title {
    font-family: 'Open Sans', Helvetica, Arial, sans-serif;
    font-weight: 300;
    letter-spacing: -1px;
    color: #fff;
    margin: 0 0 4px;
    font-size: 1.8em;
}

.site-header p {
    margin: 0;
    color: rgba(255,255,255,0.7);
    font-size: 0.95em;
}

.site-header a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.4);
    transition: all .15s ease-in-out;
}

.site-header a:hover {
    text-shadow: 0 0 10px rgba(255,255,255,0.55);
    border-bottom-color: rgba(255,255,255,0.8);
}

.site-nav {
    margin-top: 10px;
    font-size: 0.9em;
}

.site-nav a {
    margin: 0 0.6em;
}

/* ===== Content Card ===== */
.content {
    background-color: #fff;
    border-radius: 6px;
    max-width: 750px;
    margin: 28px auto;
    padding: 36px 40px 28px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    line-height: 1.7;
}

/* ===== Typography ===== */
h1, h2, h3 {
    font-family: 'Open Sans', Helvetica, Arial, sans-serif;
    font-weight: 300;
}

.content h1 {
    font-size: 1.8em;
    margin-top: 0;
    margin-bottom: 0.3em;
    color: #333;
}

.content h2 {
    font-size: 1.3em;
    margin-top: 2em;
    margin-bottom: 0.5em;
    color: #444;
}

.content h3 {
    font-size: 1.1em;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    color: #555;
}

/* ===== Links ===== */
a {
    color: #6868A8;
    text-decoration: none;
    transition: all .15s ease-in-out;
}

a:hover {
    color: #50508C;
    text-decoration: underline;
}

/* ===== Lists ===== */
ul, ol {
    padding-left: 24px;
}

li {
    margin-bottom: 0.5em;
}

/* ===== Blog Post Meta ===== */
.date {
    color: #888;
    font-style: italic;
    margin-bottom: 2em;
    font-size: 0.95em;
}

.back-link {
    display: block;
    margin-bottom: 1.5em;
    color: #6868A8;
    font-size: 0.95em;
}

.back-link:hover {
    color: #50508C;
}

/* ===== Blog List (index page) ===== */
.blog-list li {
    margin-bottom: 0.7em;
}

.blog-list .post-date {
    color: #999;
    font-size: 0.9em;
}

/* ===== Divider ===== */
.divider {
    text-align: center;
    color: #bbb;
    margin: 2em 0;
    letter-spacing: 4px;
}

hr {
    border: none;
    text-align: center;
    margin: 2em 0;
}

hr::before {
    content: "* * *";
    color: #bbb;
}

/* ===== Code ===== */
pre {
    background-color: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 1em;
    overflow-x: auto;
    font-size: 0.88em;
    line-height: 1.5;
}

code {
    font-family: 'Consolas', 'Monaco', 'Menlo', monospace;
    background-color: #f5f5f5;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.88em;
}

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

/* ===== Tables ===== */
table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
    font-size: 0.95em;
}

th, td {
    border: 1px solid #e0e0e0;
    padding: 0.5em 0.75em;
    text-align: left;
}

th {
    background-color: #f0f0f5;
    color: #444;
    font-weight: 400;
}

/* ===== Series Navigation ===== */
.series-nav {
    background-color: #f5f5fa;
    border: 1px solid #d8d8e8;
    padding: 1em 1.2em;
    margin: 2em 0;
    border-radius: 4px;
    font-size: 0.95em;
}

.series-nav strong {
    display: block;
    margin-bottom: 0.5em;
    color: #555;
}

/* ===== Images ===== */
img {
    max-width: 100%;
    height: auto;
    margin: 1.5em 0;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
}

/* ===== Footer ===== */
.site-footer {
    background-color: #282838;
    color: rgba(255,255,255,0.55);
    text-align: center;
    padding: 24px 20px 32px;
    font-size: 0.88em;
    margin-top: 0;
}

.site-footer p {
    margin: 0;
}

/* In-card footer (blog posts) */
.content footer {
    margin-top: 3em;
    padding-top: 1em;
    border-top: 1px solid #e0e0e0;
    font-size: 0.9em;
    color: #888;
}

/* ===== Responsive ===== */
@media (max-width: 800px) {
    .content {
        margin: 16px 12px;
        padding: 24px 20px 20px;
        border-radius: 4px;
    }

    .site-header {
        padding: 24px 16px;
    }

    .site-header .site-title {
        font-size: 1.5em;
    }
}