/* Import fonts - Engineering aesthetic inspired by Nothing community */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Work+Sans:wght@400;500;600;700&display=swap');

:root {
    --color-primary: #2c3e50;
    --color-secondary: #34495e;
    --color-accent: #e67e22;
    --color-bg: #fdfdfd;
    --color-text: #333333;
    --color-meta: #666;
    --color-border: #eee;
    --color-article-text: #555;
    --color-code-bg: #f4f4f4;
    --color-code-dark-bg: #2d2d2d;
    --color-code-dark-text: #ccc;
    --color-blockquote-bg: #f9f9f9;
    --color-hr: #ddd;
    --color-nav-hover-bg: rgba(230, 126, 34, 0.1);

    /* Oat overrides */
    --oat-font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --oat-line-height: 1.6;
    --oat-color-text: var(--color-text);
    --oat-color-bg: var(--color-bg);
    --oat-color-link: var(--color-primary);
    --oat-color-link-hover: var(--color-accent);
}

/* Dark theme - clean black, white, grey palette */
[data-theme="dark"] {
    --color-primary: #ffffff;
    --color-secondary: #d4d4d4;
    --color-accent: #fb923c;
    --color-bg: #0a0a0a;
    --color-text: #e5e5e5;
    --color-meta: #a3a3a3;
    --color-border: #262626;
    --color-article-text: #d4d4d4;
    --color-code-bg: #1a1a1a;
    --color-code-dark-bg: #0f0f0f;
    --color-code-dark-text: #d4d4d4;
    --color-blockquote-bg: #171717;
    --color-hr: #333333;
    --color-nav-hover-bg: rgba(251, 146, 60, 0.15);
}

html {
    height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem;
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: background-color 0.3s ease, color 0.3s ease;
    font-size: 17px;
}

/* All headings use monospaced font for engineering aesthetic */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    letter-spacing: -0.02em;
}

header {
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

header h1 {
    margin: 0;
    font-size: 1.75rem;
    line-height: 1;
}

header h1 a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

header h1 a:hover {
    color: var(--color-accent);
}

nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

nav a {
    color: var(--color-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease, background-color 0.3s ease;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

nav a:hover {
    color: var(--color-accent);
    background-color: var(--color-nav-hover-bg);
}

main {
    flex: 1;
    margin-bottom: 2rem;
}

article {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

article:last-child {
    border-bottom: none;
}

article h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

article h2 a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

article h2 a:hover {
    color: var(--color-accent);
}

.meta {
    display: block;
    color: var(--color-meta);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

article p {
    color: var(--color-article-text);
    line-height: 1.7;
    margin: 0;
}

/* Post content styles */
.post-body h1:first-child {
    display: none; /* Hide first h1 as it's shown in header */
}

.post-body {
    color: var(--color-article-text);
    line-height: 1.7;
}

.post-body h2,
.post-body h3,
.post-body h4 {
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.post-body h2 {
    font-size: 1.5rem;
}

.post-body h3 {
    font-size: 1.25rem;
}

.post-body p {
    margin-bottom: 1.5rem;
}

.post-body ul,
.post-body ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.post-body li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.post-body code {
    background-color: var(--color-code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: 'JetBrains Mono', monospace;
}

.post-body pre {
    background-color: var(--color-code-bg);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

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

[data-theme="dark"] .post-body pre {
    background-color: var(--color-code-dark-bg);
}

[data-theme="dark"] .post-body code {
    background-color: var(--color-code-dark-bg);
    color: var(--color-code-dark-text);
}

.post-body blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--color-meta);
    background-color: var(--color-blockquote-bg);
    padding: 1rem 1.5rem;
    border-radius: 4px;
}

.post-body hr {
    border: none;
    border-top: 1px solid var(--color-hr);
    margin: 2rem 0;
}

.post-body a {
    color: var(--color-primary);
    text-decoration: underline;
}

.post-body a:hover {
    color: var(--color-accent);
}

.post-body strong {
    font-weight: 600;
    color: var(--color-text);
}

footer {
    margin-top: auto;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-meta);
    font-size: 0.9rem;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    transition: transform 0.2s ease, opacity 0.2s ease;
    transition: transform 0.2s ease, opacity 0.2s ease;
    width: 36px;

    height: 36px;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.theme-toggle:hover {
    transform: scale(1.15);
    opacity: 0.8;
}

.theme-toggle:active {
    transform: scale(1);
}

@media (max-width: 640px) {
    .theme-toggle {
        width: 30px;
        height: 30px;
    }

    .theme-toggle svg {
        width: 18px;
        height: 18px;
    }
}

/* Mermaid diagrams */
.mermaid {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
    overflow-x: auto;
}

.mermaid-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-meta);
    margin-top: -1.5rem;
    margin-bottom: 2.5rem;
    font-style: italic;
}

/* Draw.io dark mode support */
[data-theme="dark"] .mxgraph {
    filter: invert(1) hue-rotate(180deg);
}