:root {
  color: var(--color-ink, #222);
  background: var(--color-canvas, #fff);
  font-family: var(--font-body, Georgia, serif);
  line-height: 1.6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

a {
  color: var(--color-accent, #174e81);
}

button, input, textarea {
  font: inherit;
}

button, input, textarea, select {
  color: inherit;
}

button, .button {
  background: var(--color-accent, #174e81);
  border: 0;
  border-radius: 3px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  padding: 0.55rem 0.85rem;
  text-decoration: none;
}

button:hover, .button:hover {
  background: var(--color-accent-strong, #103b62);
}

.site-header, main, footer {
  margin: 0 auto;
  max-width: var(--content-width, 760px);
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--color-border, #d7d7d7);
  display: flex;
  justify-content: space-between;
  min-height: 4.5rem;
}

.brand {
  color: var(--color-ink, #111);
  font-size: 1.4rem;
  font-weight: bold;
  text-decoration: none;
}

nav {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-end;
}

main {
  min-height: calc(100vh - 9rem);
  padding-bottom: 3rem;
  padding-top: 3rem;
}

footer {
  border-top: 1px solid var(--color-border, #d7d7d7);
  color: var(--color-muted, #666);
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.85rem;
  padding-bottom: 1.5rem;
  padding-top: 1.5rem;
}

h1, h2 {
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.65rem;
  margin-bottom: 0.35rem;
}

.intro {
  border-bottom: 1px solid var(--color-border, #d7d7d7);
  margin-bottom: 1.5rem;
}

.post-summary {
  border-bottom: 1px solid var(--color-border, #d7d7d7);
  padding: 1.25rem 0;
}

.post-summary h2 {
  margin-top: 0;
}

.meta, .hint {
  color: var(--color-muted, #666);
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.85rem;
}

.post {
  max-width: 680px;
}

.post-body {
  font-size: 1.12rem;
}

.post-body pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--color-code, #f4f4f4);
}

.auth, .editor {
  max-width: 680px;
}

form {
  display: grid;
  gap: 1rem;
}

label {
  display: grid;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.9rem;
  font-weight: 600;
  gap: 0.35rem;
}

input, textarea, select {
  background: var(--color-control, #fff);
  border: 1px solid var(--color-border, #a6a6a6);
  border-radius: 3px;
  padding: 0.55rem;
}

textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  resize: vertical;
}

input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: 3px solid var(--color-focus, #174e81);
  outline-offset: 2px;
}

.inline-form {
  display: inline;
}

.link-button {
  background: transparent;
  color: var(--color-accent, #174e81);
  padding: 0;
  text-decoration: underline;
}

.link-button:hover {
  background: transparent;
  color: var(--color-accent-strong, #103b62);
}

.danger {
  color: var(--color-danger, #9e1b1b);
}

.dashboard-heading, .editor-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.dashboard-heading h1, .editor-heading h1 {
  margin-bottom: 0;
}

.dashboard-heading p {
  color: var(--color-muted, #666);
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.9rem;
  margin: 0.25rem 0 0;
}

.theme-picker {
  border-bottom: 1px solid var(--color-border, #d7d7d7);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
}

.theme-picker form {
  align-items: end;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.appearance-control {
  border: 1px solid var(--color-border, #d7d7d7);
  border-radius: 4px;
  display: inline-flex;
  margin: 0;
  overflow: hidden;
  padding: 0;
}

.appearance-control label {
  cursor: pointer;
  display: block;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.45rem 0.55rem;
}

.appearance-control label + label {
  border-left: 1px solid var(--color-border, #d7d7d7);
}

.appearance-control input {
  block-size: 1px;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  inline-size: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.appearance-control input:checked + span {
  color: var(--color-accent, #174e81);
}

.appearance-control input:focus-visible + span {
  outline: 2px solid var(--color-focus, #174e81);
  outline-offset: 3px;
}

.sr-only {
  block-size: 1px;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  inline-size: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

table {
  border-collapse: collapse;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.9rem;
  width: 100%;
}

th, td {
  border-bottom: 1px solid var(--color-border, #d7d7d7);
  padding: 0.7rem 0.45rem;
  text-align: left;
  vertical-align: top;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.message {
  border-left: 3px solid;
  font-family: var(--font-ui, system-ui, sans-serif);
  padding: 0.6rem 0.8rem;
}

.error {
  background: var(--color-error, #fff1f1);
  border-color: var(--color-danger, #b42318);
}

.notice {
  background: var(--color-notice, #effaf3);
  border-color: var(--color-accent, #217a43);
}

@media (max-width: 600px) {
  h1 {
    font-size: 2rem;
  }

  table {
    display: block;
    overflow-x: auto;
  }

  .dashboard-heading, .editor-heading {
    align-items: flex-start;
    gap: 1rem;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 1rem;
    padding-top: 1rem;
  }

  nav {
    justify-content: flex-start;
  }
}