/* ========================================================================
   🎨 CENTRAL FORMATTING CONTROL PANEL
   Modify all fonts, spacing, sizes, and colors from this single section
   ======================================================================== */
:root {
  color-scheme: dark;

  /* ===== COLORS (Dark Mode - Updated) ===== */
  --bg: #0d1117;
  --fg: #e2e8f0;
  --muted: #9ca3af;
  --link: #6eaaff;
  --link-hover: #9dcaff;
  --emphasis: #c9d1d9;
  --strong: #f0f6fc;
  --border: rgba(255, 255, 255, 0.05);
  --code-bg: #161b22;
  --code-border: #30363d;

  /* ===== FONTS ===== */
  --font-body: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* ===== FONT SIZES (responsive with clamp) ===== */
  --font-size-base-min: 17px;
  --font-size-base-vw: 1.9vw;
  --font-size-base-max: 18.5px;

  --font-size-h1-min: 28px;
  --font-size-h1-vw: 5vw;
  --font-size-h1-max: 40px;

  --font-size-h2-min: 22px;
  --font-size-h2-vw: 3.6vw;
  --font-size-h2-max: 28px;

  --font-size-h3-min: 18px;
  --font-size-h3-vw: 3vw;
  --font-size-h3-max: 22px;

  --font-size-small: 0.9em;
  --font-size-tiny: 0.75em;
  --font-size-code: 0.9em;

  /* ===== LINE HEIGHTS ===== */
  --line-height-base: 1.75;
  --line-height-heading: 1.3;

  /* ===== FONT WEIGHTS ===== */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* ===== LETTER SPACING ===== */
  --letter-spacing-base: 0em;
  --letter-spacing-title: 0.1px;

  /* ===== SPACING (margins, padding, gaps) ===== */
  --space-xs: 0.3rem;
  --space-sm: 0.6rem;
  --space-md: 1.2rem;
  --space-lg: 1.6rem;
  --space-xl: 2rem;

  /* Responsive padding (with clamp) */
  --padding-container-min: 20px;
  --padding-container-vw: 5vw;
  --padding-container-max: 32px;

  --padding-header-min: 16px;
  --padding-header-vw: 4vw;
  --padding-header-max: 28px;

  /* ===== LAYOUT ===== */
  --max-width: 760px;

  /* ===== BORDER RADIUS ===== */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* ===== BORDERS ===== */
  --border-width: 1px;
  --border-width-thick: 3px;

  /* ===== NAVIGATION ===== */
  --nav-gap-min: 10px;
  --nav-gap-vw: 2.4vw;
  --nav-gap-max: 18px;
  --nav-opacity: 0.85;

  /* ===== TAGS ===== */
  --tag-padding-v: 0.25em;
  --tag-padding-h: 0.5em;

  /* ===== CODE BLOCKS ===== */
  --code-padding: 1rem;
  --code-inline-padding-v: 0.25em;
  --code-inline-padding-h: 0.45em;

  /* ===== BLOCKQUOTE ===== */
  --blockquote-padding-v: 0.6rem;
  --blockquote-padding-h: 1rem;
}

/* ===== LIGHT MODE ===== */
[data-theme="light"] {
  color-scheme: light;

  /* Light mode colors (unchanged here, feel free to adapt similarly) */
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #656d76;
  --link: #0969da;
  --link-hover: #0550ae;
  --emphasis: #57606a;
  --strong: #1f2328;
  --border: #d0d7de;
  --code-bg: #f6f8fa;
  --code-border: #d0d7de;
}


/* Theme toggle button styling */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg);
  cursor: pointer;
  padding: 0.4em 0.8em;
  border-radius: var(--radius-md);
  font-size: var(--font-size-small);
  font-family: var(--font-body);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  opacity: var(--nav-opacity);
}

.theme-toggle:hover {
  opacity: 1;
  border-color: var(--link);
  background: rgba(88, 166, 255, 0.1);
}

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

* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  text-decoration: none;
}

a.tag,
a.tag:link,
a.tag:visited,
a.tag:hover,
a.tag:active,
a.tag:focus {
  text-decoration: none !important;
}

/* Type scale that adapts with viewport (clamp(min, vw, max)) */
body {
  font-size: clamp(
    var(--font-size-base-min),
    var(--font-size-base-vw),
    var(--font-size-base-max)
  );
  line-height: var(--line-height-base);
  letter-spacing: var(--letter-spacing-base);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(
      var(--padding-container-min),
      var(--padding-container-vw),
      var(--padding-container-max)
    )
    clamp(
      var(--padding-container-min),
      var(--padding-container-vw),
      var(--padding-container-max)
    );
}

.site-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(
      var(--padding-header-min),
      var(--padding-header-vw),
      var(--padding-header-max)
    )
    clamp(
      var(--padding-container-min),
      var(--padding-container-vw),
      var(--padding-container-max)
    );
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-footer {
  max-width: var(--max-width);
  margin: var(--space-xl) auto 0;
  padding: clamp(
      var(--padding-header-min),
      var(--padding-header-vw),
      var(--padding-header-max)
    )
    clamp(
      var(--padding-container-min),
      var(--padding-container-vw),
      var(--padding-container-max)
    );
  border-top: var(--border-width) solid var(--border);
  color: var(--muted);
}

.site-title {
  text-decoration: none;
  color: var(--fg);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-title);
}
.site-nav {
  display: flex;
  gap: clamp(var(--nav-gap-min), var(--nav-gap-vw), var(--nav-gap-max));
  flex-wrap: wrap;
  align-items: center;
}
.site-nav a {
  text-decoration: none;
  color: var(--fg);
  opacity: var(--nav-opacity);
}
.site-nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
p {
  margin: 0 0 var(--space-md) 0;
}
em,
i {
  color: var(--emphasis);
}
strong,
b {
  color: var(--strong);
  font-weight: var(--font-weight-semibold);
}
h1 {
  font-size: clamp(
    var(--font-size-h1-min),
    var(--font-size-h1-vw),
    var(--font-size-h1-max)
  );
  line-height: var(--line-height-heading);
  margin: 0.2rem 0 var(--space-md);
}
h2 {
  font-size: clamp(
    var(--font-size-h2-min),
    var(--font-size-h2-vw),
    var(--font-size-h2-max)
  );
  margin: 1.2rem 0 0.6rem;
}
h3 {
  font-size: clamp(
    var(--font-size-h3-min),
    var(--font-size-h3-vw),
    var(--font-size-h3-max)
  );
  margin: var(--space-md) 0 var(--space-sm);
}

.post-title {
  margin: 0 0 0.35rem 0;
  line-height: var(--line-height-heading);
}
.post-meta {
  color: var(--muted);
  margin: 0 0 var(--space-lg) 0;
}
.post-meta .sep {
  padding: 0 0.4rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}
.post-list li {
  margin: 0.55rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-sm);
}
.post-date {
  color: var(--muted);
  margin-right: var(--space-sm);
  white-space: nowrap;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  flex-shrink: 0;
}
.post-tags {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-left: auto;
}
.tag {
  background: var(--muted);
  color: var(--bg);
  padding: var(--tag-padding-v) var(--tag-padding-h);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-tiny);
  font-weight: var(--font-weight-medium);
  text-transform: lowercase;
  text-decoration: none;
  display: inline-block;
  margin-right: var(--space-xs);
}

.tag:hover {
  background: var(--link);
  color: var(--bg);
}

/* Tags page styling */
.tags-list {
  margin: 2rem 0;
  padding: 1rem;
  background: rgba(139, 148, 158, 0.1);
  border-radius: 6px;
}

/* Blog page styling */
.blog-posts {
  margin-top: 1rem;
}

.year-header {
  font-size: 1.5em;
  margin: 2rem 0 1rem 0;
  color: var(--fg);
  border-bottom: 1px solid var(--muted);
  padding-bottom: 0.5rem;
}

.month-header {
  font-size: 1.2em;
  margin: 1.5rem 0 0.5rem 0;
  color: var(--muted);
  font-weight: 600;
}

.month-posts {
  list-style: disc;
  list-style-position: outside;
  padding-left: 1.5rem;
  margin: 0 0 1rem 0;
}

.month-posts li {
  margin: 0.4rem 0;
  display: list-item;
  list-style: disc;
}

.month-posts > li::marker{
  color: var(--muted);
}

.blog-list {
  display: flex !important;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

.blog-list-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}

blockquote {
  margin: 1rem 0;
  padding: 0.5rem 0.9rem;
  border-left: 3px solid var(--muted);
  color: var(--muted);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
}
pre,
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono",
    monospace;
}
pre {
  background: #161b22;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid #30363d;
}
code {
  background: #161b22;
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}
pre code {
  background: transparent;
  padding: 0;
}

/* Archives: 3-column grid (Year | Month | Links) that collapses nicely */
.archive-grid {
  display: grid;
  grid-template-columns: 60px 90px 1fr;
  gap: 0.5rem 2rem;
  align-items: start;
  margin-top: 1rem;
}
.archive-grid .year {
  color: var(--muted);
  font-size: 0.9em;
  font-weight: 600;
  text-align: right;
  padding-right: 0.5rem;
}
.archive-grid .month {
  color: var(--muted);
  font-size: 0.9em;
  font-weight: 500;
}
.archive-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.archive-grid li {
  margin: 0.35rem 0;
}

/* Search form styling */
.search-form {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.search-form input[type="text"] {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  border: 1px solid var(--muted);
  background: var(--bg);
  color: var(--fg);
  border-radius: 4px;
  font-family: var(--font);
}

.search-form input[type="text"]:focus {
  outline: none;
  border-color: var(--link);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.search-form button {
  padding: 8px 16px;
  background: var(--link);
  color: var(--bg);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font);
  font-weight: 500;
  white-space: nowrap;
}

.search-form button:hover {
  background: #4a9eff;
}

/* Tag filter section styling */
.tag-filter-section {
  margin-bottom: 2rem;
}

.tag-filter-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tag-filter-toggle:hover {
  background: var(--code-border);
  border-color: var(--link);
}

.toggle-arrow {
  font-size: 0.8em;
  transition: transform 0.2s ease;
}

.tag-filter-dropdown {
  margin-top: 0.5rem;
  padding: 1rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.tag-filter-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.filter-action-btn {
  padding: 0.4rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.85em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-action-btn:hover {
  background: var(--border);
  border-color: var(--link);
}

.filter-apply-btn {
  background: var(--link);
  color: var(--bg);
  border-color: var(--link);
  font-weight: var(--font-weight-medium);
}

.filter-apply-btn:hover {
  background: var(--link-hover);
  border-color: var(--link-hover);
}

.tag-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-height: 300px;
  overflow-y: auto;
  padding: 0.5rem 0;
}

.tag-filter-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9em;
  user-select: none;
}

.tag-filter-item:hover {
  background: var(--border);
  border-color: var(--link);
}

.tag-filter-item input[type="checkbox"] {
  cursor: pointer;
  margin: 0;
}

.tag-filter-label {
  color: var(--fg);
  font-weight: var(--font-weight-medium);
}

/* Search results styling */
#searchResults {
  margin-top: 1rem;
}

#searchResults h2 {
  margin-bottom: 1rem;
  color: var(--fg);
}

#resultsList {
  margin-bottom: 1rem;
}

#resultsList .post-list {
  margin: 0;
}

#resultsList .post-list li {
  margin: 0.55rem 0;
}

mark {
  background: rgba(88, 166, 255, 0.3);
  padding: 0.1em 0.2em;
  border-radius: 2px;
  color: inherit;
}

/* Small screens: stack header & widen touch targets */
@media (max-width: 700px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .post-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }
  .post-date {
    display: inline-block;
    margin-bottom: 0.25rem;
    margin-right: 0;
  }
  .post-tags {
    margin-left: 0;
    margin-top: 0.25rem;
  }
  .month-posts li {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
    margin-left: 0;
  }
  .archive-grid {
    grid-template-columns: 58px 1fr;
  }
  .archive-grid .year {
    grid-column: 1;
    text-align: left;
    padding-right: 0;
  }
  .archive-grid .month {
    grid-column: 2;
  }
  .archive-grid ul {
    grid-column: 1 / -1;
    margin-bottom: 0.75rem;
  }
  .search-form {
    flex-direction: column;
    align-items: stretch;
  }
  .search-form input[type="text"] {
    min-width: auto;
  }
  .tag-filter-actions {
    flex-direction: column;
  }
  .filter-action-btn {
    width: 100%;
  }
  .tag-filter-list {
    gap: 0.4rem;
  }
  .tag-filter-item {
    font-size: 0.85em;
    padding: 0.3rem 0.5rem;
  }
}