:root {

  --bg: #ffffff;

  --text: #111111;

  --muted: #666666;

  --border: #dddddd;



  --bg-dark: #0f1115;

  --text-dark: #e6e6e6;

  --muted-dark: #9aa0a6;

  --border-dark: #2a2f36;



  --content-max-width: 1024px;

  --base-font-px: 24;

}



* { box-sizing: border-box; }



html, body {

  height: 100%;

}



body {

  margin: 0;

  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;

  color: var(--text);

  background: var(--bg);

  line-height: 1.55;

  font-size: clamp(calc(var(--base-font-px) * 0.75px), 1.2vw + 0.5rem, calc(var(--base-font-px) * 1px));

}



body[data-theme="dark"] {

  color: var(--text-dark);

  background: var(--bg-dark);

}



.site-header {

  display: flex;

  align-items: center;

  justify-content: space-between;

  padding: 16px 24px;

  border-bottom: 1px solid var(--border);

  background: color-mix(in oklab, var(--bg) 92%, transparent);

  position: sticky;

  top: 0;

  backdrop-filter: saturate(1.1) blur(6px);

  z-index: 10;

}



body[data-theme="dark"] .site-header {

  border-bottom-color: var(--border-dark);

  background: color-mix(in oklab, var(--bg-dark) 92%, transparent);

}



.brand { display: flex; align-items: center; gap: 12px; }

.app-title { font-size: 20px; margin: 0; }

.actions { display: flex; gap: 8px; }



#app {

  max-width: min(var(--content-max-width), calc(100vw - 32px));

  margin: 24px auto;

  padding: 0 8px;

}



.card {

  border: 1px solid var(--border);

  border-radius: 12px;

  background: var(--bg);

  box-shadow: 0 1px 3px rgba(0,0,0,0.05);

  padding: 16px;

}

body[data-theme="dark"] .card {

  border-color: var(--border-dark);

  background: color-mix(in oklab, var(--bg-dark) 98%, #0000);

  box-shadow: 0 1px 3px rgba(0,0,0,0.25);

}



.view-head {

  display: flex;

  align-items: center;

  justify-content: space-between;

  gap: 12px;

  margin-bottom: 12px;

}



.meta {

  display: flex;

  align-items: baseline;

  gap: 12px;

  flex-wrap: wrap;

}



.author { font-weight: 600; }

.time { font-variant-numeric: tabular-nums; }



.content { display: grid; gap: 24px; }



.text {

  white-space: pre-wrap;

  overflow-wrap: anywhere;

  word-break: break-word;

}



.media { display: grid; gap: 16px; }

.grid {

  display: grid;

  gap: 12px;

  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));

}



.image {

  width: 100%;

  height: auto;

  max-height: 60vh;

  object-fit: cover;

  border-radius: 10px;

  border: 1px solid var(--border);

}

body[data-theme="dark"] .image { border-color: var(--border-dark); }



.btn {

  appearance: none;

  border: 1px solid var(--border);

  background: transparent;

  color: inherit;

  padding: 8px 12px;

  border-radius: 10px;

  cursor: pointer;

  font-weight: 600;

  transition: background 0.15s ease, border-color 0.15s ease;

}

.btn:hover { background: color-mix(in oklab, currentColor 10%, transparent); }

.btn:focus-visible { outline: 3px solid #5b9dd9; outline-offset: 2px; }



.primary { background: #0d6efd; color: #ffffff; border-color: #0d6efd; }

.primary:hover { background: #0b5ed7; border-color: #0b5ed7; }



.danger { background: #dc3545; border-color: #dc3545; color: #ffffff; }

.danger:hover { background: #c82333; border-color: #c82333; }



.field { display: grid; gap: 8px; margin-bottom: 16px; }

.label { font-weight: 600; }



.input {

  width: 100%;

  padding: 10px 12px;

  border-radius: 10px;

  border: 1px solid var(--border);

  background: var(--bg);

  color: inherit;

}

.input:focus-visible { outline: 3px solid #5b9dd9; outline-offset: 2px; }



.small { font-size: 0.9em; }

.muted { color: var(--muted); }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }



.err {

  max-width: min(var(--content-max-width), calc(100vw - 32px));

  margin: 12px auto 0;

  padding: 8px 12px;

  display: grid;

  gap: 4px;

}

.err .item {

  padding: 10px 12px;

  border-radius: 10px;

  border: 1px solid #c42;

  background: color-mix(in oklab, #ffdddd 80%, transparent);

  color: #5a0f0f;

}

.err .warn {

  border-color: #c79a00;

  background: color-mix(in oklab, #fff3cd 80%, transparent);

  color: #5a4a00;

}



.compose-grid { display: grid; gap: 24px; }

@media (min-width: 980px) {

  .compose-grid { grid-template-columns: 1fr 1fr; align-items: start; }

}



.form-actions { display: flex; gap: 12px; flex-wrap: wrap; }



.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.row.two .field { flex: 1; }



.img-list {

  list-style: none;

  margin: 8px 0 0;

  padding: 0;

  display: grid;

  gap: 8px;

}

.img-list li {

  display: flex;

  justify-content: space-between;

  align-items: center;

  gap: 12px;

  padding: 8px 10px;

  border: 1px solid var(--border);

  border-radius: 10px;

}

.img-list .url {

  overflow: hidden;

  text-overflow: ellipsis;

  white-space: nowrap;

  flex: 1;

}



.preview .preview-head { margin-bottom: 8px; }



.toast {

  position: fixed;

  left: 50%;

  bottom: 16px;

  transform: translateX(-50%);

  padding: 10px 14px;

  background: #111;

  color: #fff;

  border-radius: 999px;

  font-weight: 700;

  box-shadow: 0 4px 16px rgba(0,0,0,0.25);

  z-index: 20;

}



a { color: #0d6efd; text-decoration: underline; }

body[data-theme="dark"] a { color: #78a9ff; }



body[data-theme="dark"] .btn:focus-visible,

body[data-theme="dark"] .input:focus-visible,

body[data-theme="dark"] a:focus-visible { outline-color: #78a9ff; }



iframe {

  width: 100%;

  aspect-ratio: 16 / 9;

  border: 0;

  border-radius: 10px;

  background: #000;

}