/* CSS Custom Properties */
:root {
    /* Light theme colors */
    --color-primary: #387850;
    --color-primary-hover: #245636;
    --color-border: #dce3dd;
    --color-callout: #a3c9ab;
    --color-text: #2b332d;
    --color-text-muted: #6a756e;
    --color-text-meta: #98a69e;
    --color-background: #fdfaf6;
    --color-background-code: #f3f4ef;
    --color-background-pre: #e6e8e0;
    --color-background-toc: #f3f4ef;
    --color-background-draft: #e8f0eb;

    /* Dark theme colors */
    --color-primary-dark: #FF8200;
    --color-primary-hover-dark: #FFA333;
    --color-border-dark: #3A3A3A;
    --color-text-dark: #E2E2E2;
    --color-text-muted-dark: #8C8C8C;
    --color-background-dark: #171717;
    --color-background-code-dark: #222222;
    --color-background-pre-dark: #111111;
    --color-background-toc-dark: #222222;
    --color-background-draft-dark: #4A2400;

    /* Spacing and sizing */
    --content-max-width: 1000px;
    --content-padding: 1ch;
    --border-radius: 5px;
    --font-size-base: 15px;
    --line-height-base: 1.6;
    --line-height-content: 1.5;
}

/* Reset and base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    color: var(--color-text, #232333);
    font-family: 'Roboto Mono', 'Courier New', monospace;
    font-size: var(--font-size-base, 15px);
    line-height: var(--line-height-base, 1.6);
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 8px;
    background-color: var(--color-background, #ffffff);
    transition: background-color 0.2s ease, color 0.2s ease;
}

* {
    -webkit-tap-highlight-color: transparent;
}

/* Selection styles */
::selection {
    background: var(--color-primary, #dc143c);
    color: #ffffff;
}

::-moz-selection {
    background: var(--color-primary, #dc143c);
    color: #ffffff;
}

/* Typography */
p {
    font-family: 'Fira Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: var(--line-height-content, 1.5);
    /* Fallback for older browsers */
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

@supports (margin-block: 0.5em) {
    p {
        margin-top: unset;
        margin-bottom: unset;
        margin-block: 0.5em;
    }
}

hr {
    border: 0;
    /* Fallback for older browsers */
    border-top: 3px dotted var(--color-border, #663399);
    margin-top: 1em;
    margin-bottom: 1em;
}

@supports (border-block-start: 3px dotted var(--color-border, #663399)) {
    hr {
        border-top: unset;
        margin-top: unset;
        margin-bottom: unset;
        border-block-start: 3px dotted var(--color-border, #663399);
        margin-block: 1em;
    }
}

blockquote {
    /* Fallback for older browsers */
    border-left: 3px solid var(--color-border, #663399);
    padding-left: 1em;
    color: var(--color-text-muted, #737373);
    margin: 0;
    font-style: italic;
}

@supports (border-inline-start: 3px solid var(--color-border, #663399)) {
    blockquote {
        border-left: unset;
        padding-left: unset;
        border-inline-start: 3px solid var(--color-border, #663399);
        padding-inline-start: 1em;
    }
}

/* Links */
a {
    /* Fallback for older browsers */
    border-bottom: 3px solid var(--color-primary, #dc143c);
    /* Modern logical properties */
    border-block-end: 3px solid var(--color-primary, #dc143c);
    color: inherit;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}

a:hover,
a:focus {
    background-color: var(--color-primary-hover, #b91c3c);
    color: #ffffff;
    outline: 2px solid var(--color-primary, #dc143c);
    outline-offset: 2px;
}

a:focus {
    outline-style: solid;
}

/* Lists */
ul {
    list-style: none;
    /* Fallback for older browsers */
    padding-left: 2ch;
    /* Modern logical properties */
    padding-inline-start: 2ch;
}

ul li {
    text-indent: -2ch;
}

ul > li::before {
    content: '* ';
    font-weight: bold;
    color: var(--color-primary, #dc143c);
}

/* Images */
img {
    /*border: 3px solid var(--color-background-pre, #ececec);*/
    /* Fallback for older browsers */
    max-width: 100%;
    height: auto;
    /* Modern logical properties */
    max-inline-size: 100%;
    block-size: auto;
    border-radius: var(--border-radius, 5px);
}

figure {
    display: inline-block;
    margin: 0;
    /* Fallback for older browsers */
    max-width: 100%;
    /* Modern logical properties */
    max-inline-size: 100%;
}

figure img {
    /* Fallback for older browsers */
    max-height: 500px;
    /* Modern logical properties */
    max-block-size: 500px;
}

@media screen and (min-width: 37.5em) {
    figure {
        /* Fallback for older browsers */
        padding-left: 2.5rem;
        padding-right: 2.5rem;
        /* Modern logical properties */
        padding-inline: 2.5rem;
    }
}

figure h4 {
    font-size: 1rem;
    margin: 0;
    /* Fallback for older browsers */
    margin-bottom: 1em;
    /* Modern logical properties */
    margin-block-end: 1em;
}

figure h4::before {
    content: '↳ ';
    color: var(--color-primary, #dc143c);
}

/* Code blocks */
code {
    background-color: var(--color-background-code, #f1f1f1);
    padding: 0.1em 0.2em;
    border-radius: 3px;
    font-size: 0.9em;
}

pre {
    background-color: var(--color-background-pre, #ececec);
    line-height: 1.4;
    overflow-x: auto;
    padding: 1em;
    border-radius: var(--border-radius, 5px);
    border: 1px solid var(--color-border, #663399);
}

.highlight pre ::selection {
    background: rgba(255, 255, 255, 0.2);
    color: inherit;
}

pre code {
    background-color: transparent;
    color: inherit;
    font-size: 100%;
    padding: 0;
}

/* Layout containers */
.content {
    /* Fallback for older browsers */
    margin-bottom: 4em;
    margin-left: auto;
    margin-right: auto;
    max-width: var(--content-max-width, 800px);
    padding-left: var(--content-padding, 1ch);
    padding-right: var(--content-padding, 1ch);
    /* Modern logical properties */
    margin-block-end: 4em;
    margin-inline: auto;
    max-inline-size: var(--content-max-width, 800px);
    padding-inline: var(--content-padding, 1ch);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Header */
header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    /* Fallback for older browsers */
    margin-top: 1em;
    margin-bottom: 1em;
    /* Modern logical properties */
    margin-block: 1em;
    line-height: 2.5em;
    gap: 1rem;
}

header .main {
    font-size: 1.5rem;
    font-weight: bold;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-size: 1.2rem;
    /* Fallback for older browsers */
    margin-top: 2em;
    margin-bottom: 0.5em;
    /* Modern logical properties */
    margin-block-start: 2em;
    margin-block-end: 0.5em;
    line-height: 1.2;
}

h1::before {
    color: var(--color-primary, #dc143c);
    content: '# ';
}

h2::before {
    color: var(--color-primary, #dc143c);
    content: '## ';
}

h3::before {
    color: var(--color-primary, #dc143c);
    content: '### ';
}

h4::before {
    color: var(--color-primary, #dc143c);
    content: '#### ';
}

h5::before {
    color: var(--color-primary, #dc143c);
    content: '##### ';
}

h6::before {
    color: var(--color-primary, #dc143c);
    content: '###### ';
}

.meta {
    color: var(--color-text-meta, #999999);
    letter-spacing: -0.5px;
    font-size: 0.9em;
}

/* Post layout */
.post-container {
    /* Flexbox fallback for older browsers */
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: flex-start;
}

@supports (display: grid) {
    .post-container {
        display: grid;
        grid-template-columns: 1fr;
    }
}

@media screen and (min-width: 60em) {
    .post-container {
        /* Flexbox fallback */
        flex-wrap: nowrap;
    }

    @supports (display: grid) {
        .post-container {
            grid-template-columns: 1fr auto;
        }
    }
}

.post-content {
    /* Flexbox fallback */
    flex: 1;
    min-width: 0;
    /* Modern properties */
    min-inline-size: 0;
    overflow-wrap: break-word;
}

.toc {
    background-color: var(--color-background-toc, #ececec);
    border-radius: var(--border-radius, 5px);
    color: var(--color-text, #232333);
    /* Fallback for older browsers */
    max-width: 18.75rem;
    /* Flexbox fallback */
    flex: 0 0 auto;
    /* Modern properties */
    max-inline-size: 18.75rem;
    overflow-y: auto;
    padding: 0.75rem;
    border: 1px solid var(--color-border, #663399);
}

@media screen and (min-width: 60em) {
    .toc {
        position: sticky;
        /* Fallback for older browsers */
        top: 1.25rem;
        /* Modern logical properties */
        inset-block-start: 1.25rem;
    }
}

@media screen and (max-width: 59.99em) {
    .toc {
        /* Fallback for older browsers */
        margin-bottom: 1.5rem;
        /* Modern logical properties */
        margin-block-end: 1.5rem;
        order: -1;
    }
}

/* Footer */
footer {
    display: flex;
    align-items: center;
    /* Fallback for older browsers */
    border-top: 0.4rem dotted var(--color-border, #663399);
    padding-top: 2rem;
    padding-bottom: 2rem;
    margin-top: 2rem;
    /* Modern logical properties */
    border-block-start: 0.4rem dotted var(--color-border, #663399);
    padding-block: 2rem;
    margin-block-start: 2rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.soc {
    display: flex;
    align-items: center;
    /* Fallback for older browsers */
    border-bottom: none;
    /* Modern logical properties */
    border-block-end: none;
    transition: color 0.2s ease;
}

.soc:hover,
.soc:focus {
    color: #ffffff;
    outline: 2px solid var(--color-primary, #dc143c);
    outline-offset: 2px;
}

.border {
    margin-inline: 0.5rem;
    border: 1px solid var(--color-border, #663399);
}

/* Common elements */
.title h1 {
    /* Fallback for older browsers */
    margin-bottom: 0;
    /* Modern logical properties */
    margin-block-end: 0;
}

time {
    color: var(--color-text-muted, #737373);
    font-size: 0.9em;
}

/* Posts */
article .title {
    /* Fallback for older browsers */
    margin-bottom: 1em;
    /* Modern logical properties */
    margin-block-end: 1em;
}


/* Callouts */
.callout {
    background-color: var(--color-callout, #1e90ff);
    color: #ffffff;
    padding: 1em;
    border-radius: var(--border-radius, 5px);
    /* Fallback for older browsers */
    margin-top: 1em;
    margin-bottom: 1em;
    /* Modern logical properties */
    margin-block: 1em;
}

.callout p {
    font-family: 'IBM Plex Mono', 'Courier New', monospace;
    margin: 0;
}

.callout a {
    /* Fallback for older browsers */
    border-bottom: 3px solid #ffffff;
    /* Modern logical properties */
    border-block-end: 3px solid #ffffff;
    color: inherit;
}

.callout a:hover,
.callout a:focus {
    background-color: #ffffff;
    color: var(--color-callout, #1e90ff);
}

/* Callout variants */
.callout-alert {
    color: #721c24;
    background-color: #f8d7da;
    border: 3px solid #f5c2c7;
}

.callout-tip {
    color: #055160;
    background-color: #d1ecf1;
    border: 3px solid #b8daff;
}

.callout-warning {
    color: #664d03;
    background-color: #fff3cd;
    border: 3px solid #ffecb5;
}

.callout-custom {
    /* Custom styles will be applied inline */
    color: inherit;
}

/* Site and content elements */
.site-description {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
}

.tags li::before {
    content: "🏷 ";
    margin-inline-start: 2rem;
}

.tags a {
    /* Fallback for older browsers */
    border-bottom: 3px solid var(--color-primary, #dc143c);
    /* Modern logical properties */
    border-block-end: 3px solid var(--color-primary, #dc143c);
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    transition: all 0.2s ease;
}

.tags a:hover,
.tags a:focus {
    color: #ffffff;
    background-color: var(--color-primary-hover, #b91c3c);
}

/* Icons and media */
svg {
    /* Fallback for older browsers */
    max-height: 1rem;
    max-width: 1rem;
    /* Modern logical properties */
    max-block-size: 1rem;
    max-inline-size: 1rem;
}

.feather {
    /* Fallback for older browsers */
    width: 1.5rem;
    height: 1.5rem;
    /* Modern logical properties */
    inline-size: 1.5rem;
    block-size: 1.5rem;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    display: inline-block;
    vertical-align: middle;
}

/* Draft label */
.draft-label {
    color: var(--color-border, #663399);
    text-decoration: none;
    padding: 0.125rem 0.25rem;
    border-radius: 4px;
    /* Fallback for older browsers */
    margin-left: 0.375rem;
    /* Modern logical properties */
    margin-inline-start: 0.375rem;
    background-color: var(--color-background-draft, #f9f2f4);
    font-size: 0.8em;
    font-weight: bold;
}

/* Code highlighting */
.highlight {
    position: relative;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--border-radius, 5px);
    overflow: hidden;
}

/* Tables */
table {
    border-spacing: 0;
    border-collapse: collapse;
    /* Fallback for older browsers */
    width: 100%;
    margin-top: 1rem;
    margin-bottom: 1rem;
    /* Modern logical properties */
    inline-size: 100%;
    margin-block: 1rem;
    border-radius: var(--border-radius, 5px);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

table th {
    padding: 0.75rem;
    border: 1px solid var(--color-border, #663399);
    font-weight: bold;
    background-color: var(--color-background-pre, #ececec);
    text-align: start;
}

table td {
    padding: 0.75rem;
    border: 1px solid var(--color-border, #663399);
}

table tr:nth-child(even) {
    background-color: var(--color-background-code, #f1f1f1);
}

/* Navigation and theme toggle */
nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-toggle {
    /* Reset button styles */
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    border: none;
    background: none;
    margin: 0;
    font: inherit;
    cursor: pointer;

    /* Custom styling */
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-toggle {
    /* Ensure icon is always visible */
    color: var(--color-text, #232333);
}

.nav-toggle:hover,
.nav-toggle:focus {
    background-color: var(--color-primary, #dc143c);
    color: #ffffff;
    outline: 2px solid var(--color-primary, #dc143c);
    outline-offset: 2px;
}

.nav-toggle:focus {
    outline-style: solid;
}

/* Search */
.search-page {
    display: grid;
    gap: 1.5rem;
}

.search-intro {
    margin-block-start: -0.5rem;
}

.search-panel {
    border: 1px solid var(--color-border, #663399);
    border-radius: var(--border-radius, 5px);
    background-color: var(--color-background-pre, #ececec);
    padding: 1rem;
}

.search-label {
    display: block;
    font-weight: bold;
    margin-block-end: 0.5rem;
}

.search-input {
    inline-size: 100%;
    border: 1px solid var(--color-border, #663399);
    border-radius: 4px;
    background-color: var(--color-background, #ffffff);
    color: var(--color-text, #232333);
    font: inherit;
    padding: 0.75rem 0.9rem;
}

.search-input:focus {
    outline: 2px solid var(--color-primary, #dc143c);
    outline-offset: 2px;
}

.search-hint {
    color: var(--color-text-muted, #737373);
    font-size: 0.95em;
    margin-block: 0.75rem 0;
}

kbd {
    border: 1px solid var(--color-border, #663399);
    border-radius: 4px;
    background-color: var(--color-background, #ffffff);
    font-size: 0.9em;
    padding: 0.1rem 0.35rem;
}

.search-status {
    margin-block: 1rem 0;
}

.search-status-empty,
.search-status-error {
    color: var(--color-text-muted, #737373);
}

.search-status-error {
    color: var(--color-primary, #dc143c);
}

.search-results {
    list-style: none;
    padding: 0;
    margin-block: 1rem 0;
}

.search-results li {
    text-indent: 0;
}

.search-results > li::before,
.search-tag-list > li::before {
    content: none;
}

.search-result + .search-result {
    margin-block-start: 1rem;
}

.search-result-card {
    border: 1px solid var(--color-border, #663399);
    border-radius: var(--border-radius, 5px);
    background-color: var(--color-background, #ffffff);
    padding: 1rem;
}

.search-result-title {
    margin-block: 0 0.35rem;
}

.search-result-meta {
    color: var(--color-text-muted, #737373);
    font-size: 0.95em;
    margin-block: 0;
}

.search-result-snippet {
    margin-block: 0.75rem 0;
}

.search-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin-block: 0.75rem 0;
}

.search-tag-list li {
    text-indent: 0;
}

.search-tag {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-primary, #dc143c);
    border-radius: 999px;
    padding: 0.15rem 0.55rem;
    font-size: 0.9em;
}

.nav-toggle:active {
    transform: scale(0.95);
}

/* Media queries for responsive design */
@media (max-width: 37.4em) {
    .content {
        /* Fallback for older browsers */
        padding-left: 0.5rem;
        padding-right: 0.5rem;
        /* Modern logical properties */
        padding-inline: 0.5rem;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .site-description {
        flex-direction: column;
        align-items: flex-start;
    }
}