/*
 * aBER Personal Timeline Theme
 * Vercel × Notion posture: quiet, restrained, information-first.
 * Designed for BroadcastChannel HEADER_INJECT.
 */

:root {
  --aber-accent: #5e6ad2;
  --aber-accent-hover: #4f5bc2;
  --aber-ink: #1b1b1b;
  --aber-text: #33353a;
  --aber-muted: #6b6f76;
  --aber-subtle: #8b9098;
  --aber-surface: #fcfcfd;
  --aber-raised: #ffffff;
  --aber-border: #e6e7eb;
  --aber-border-strong: #d4d6dc;
  --aber-selection: #eef0ff;
  --aber-code-bg: #f3f4f7;
  --aber-code-text: #40445a;
  --aber-success: #2e8b57;
  --aber-danger: #c23b4a;

  --font-main: "MI Sans", "苹方", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-secondary: "MI Sans", "苹方", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --font-display: "ia-writer-quattro-s", "MI Sans", "苹方", serif;

  --width: 720px;
  --body-padding-inline: 24px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --line: 1px solid var(--aber-border);
  --soft-shadow: 0 1px 2px rgb(0 0 0 / 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --aber-accent: #606acc;
    --aber-accent-hover: #737dd8;
    --aber-ink: #e3e4e6;
    --aber-text: #c6c8ce;
    --aber-muted: #9b9ea6;
    --aber-subtle: #6f727b;
    --aber-surface: #050607;
    --aber-raised: #0d0f12;
    --aber-border: #202328;
    --aber-border-strong: #30343b;
    --aber-selection: #202447;
    --aber-code-bg: #191b22;
    --aber-code-text: #c7cbea;
    --soft-shadow: 0 1px 2px rgb(0 0 0 / 0.32);
  }
}

html {
  background: var(--aber-surface);
  color-scheme: light dark;
}

body {
  background: var(--aber-surface);
  color: var(--aber-text);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: -0.006em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body,
body.home,
body.post,
body.page,
main,
footer {
  background-color: var(--aber-surface);
}

body > header,
body > main,
body > footer,
header,
main,
footer {
  width: min(calc(100% - (var(--body-padding-inline) * 2)), var(--width));
  margin-inline: auto;
}

body > header,
header {
  padding-top: 64px;
  padding-bottom: 28px;
  border-bottom: var(--line);
}

header > a.title,
header > a.title:visited {
  color: var(--aber-ink);
  text-decoration: none;
}

header > a.title > h1,
header h1 {
  margin: 0;
  color: var(--aber-ink);
  font-family: var(--font-main);
  font-size: 25px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

header > a.title > h1::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 7px;
  margin-bottom: 3px;
  border-radius: 50%;
  background: var(--aber-accent);
}

header > nav,
header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-top: 18px;
  color: var(--aber-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
}

header > nav a,
header nav a {
  color: var(--aber-muted);
  text-decoration: none;
}

header > nav a:hover,
header > nav a:focus-visible {
  color: var(--aber-accent);
}

main {
  padding-top: 42px;
  padding-bottom: 56px;
}

main > h1,
main > h2 {
  margin: 0 0 32px;
  color: var(--aber-ink);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

/* Feed: one calm reading column, not a stack of heavy cards. */
.feed,
ol.posts-feed,
ul.posts-feed,
.posts-feed {
  margin: 0;
  padding: 0;
  list-style: none;
}

.posts-feed > li,
.posts-feed > li.post-entry,
.post-entry {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 0;
}

.posts-feed article,
.post-entry article {
  position: relative;
  margin: 0;
  padding: 24px 0 28px;
  border-top: var(--line);
  background: transparent;
}

.posts-feed article:first-child,
.post-entry:first-child article {
  border-top-color: transparent;
  padding-top: 0;
}

/* Quiet metadata row. */
.posts-feed article > p:first-child,
.post-entry article > p:first-child,
.post-entry .post-meta,
.post-entry time {
  margin: 0 0 10px;
  color: var(--aber-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.posts-feed article > p:first-child a,
.post-entry time,
.post-entry .post-meta a {
  color: inherit;
  text-decoration: none;
}

.posts-feed article > p:first-child a:hover,
.post-entry time:hover,
.post-entry .post-meta a:hover {
  color: var(--aber-accent);
}

/* Post body: readable text, restrained links. */
.posts-feed article > p,
.post-entry p,
.post-entry .post-content {
  color: var(--aber-text);
  font-size: 15px;
  line-height: 1.75;
}

.posts-feed article > p:not(:first-child),
.post-entry p:not(:first-child) {
  margin: 0 0 12px;
}

a,
a:visited {
  color: var(--aber-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  color: var(--aber-accent-hover);
}

/* Hashtags and post labels become compact metadata, not giant badges. */
.tags,
.post-tags,
p.tags.post-tags,
.posts-feed .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 0;
  color: var(--aber-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
}

.tags a,
.post-tags a,
p.tags.post-tags a {
  color: var(--aber-muted);
  text-decoration: none;
}

.tags a:hover,
.post-tags a:hover,
p.tags.post-tags a:hover {
  color: var(--aber-accent);
}

/* Images: preserve intrinsic aspect ratio; never force a universal crop. */
.posts-feed img,
.post-entry img,
.post-content img,
article img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: calc(100vh - 220px) !important;
  margin: 18px 0;
  border: 1px solid var(--aber-border);
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--aber-raised);
}

/* BroadcastChannel's base media rule expands every image to the full content
 * width. The HTML already contains intrinsic width/height attributes, so keep
 * normal images at their natural rendered size and only cap oversized media. */
.content img:not(.tg-emoji):not(.sticker):not(.link_preview_image):not(.modal-img),
.content .image-preview-wrap img,
.content .image-preview-button img {
  width: auto !important;
  max-width: 100% !important;
  height: auto !important;
  max-height: calc(100vh - 220px) !important;
  object-fit: contain;
}

/* The clickable preview remains shrink-to-fit instead of stretching a small
 * image to the full reading column. */
.content .image-preview-button,
.content .image-preview-wrap {
  display: block;
  width: fit-content;
  max-width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
}

/* Multi-image posts preserve each image's aspect ratio. */
.content .image-list-container {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  max-width: 100%;
  margin: 18px 0;
}

.content .image-list-container .image-preview-button,
.content .image-list-container .image-preview-wrap {
  flex: 0 1 auto;
  min-width: 0;
  margin: 0;
  max-width: calc((100% - 12px) / 2);
}

.content .image-list-container img {
  display: block;
  width: auto !important;
  max-width: 100%;
  max-height: calc(100vh - 260px) !important;
  margin: 0;
}

@media (max-width: 560px) {
  .content .image-list-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content .image-list-container .image-preview-button,
  .content .image-list-container .image-preview-wrap {
    width: 100%;
    max-width: 100%;
  }

  .content .image-list-container img {
    width: 100% !important;
    max-height: calc(100vh - 180px) !important;
  }
}

.media,
.post-media,
.media-wrapper,
.image-wrapper {
  width: 100%;
  max-width: 100%;
  margin: 18px 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--aber-raised);
}

.media img,
.post-media img,
.media-wrapper img,
.image-wrapper img {
  width: 100%;
  height: auto;
  max-height: calc(100vh - 220px) !important;
  margin: 0;
  object-fit: contain;
}

pre,
pre.code,
.highlight {
  overflow-x: auto;
  margin: 20px 0;
  padding: 16px;
  border: 1px solid var(--aber-border);
  border-radius: var(--radius-md);
  background: var(--aber-code-bg);
  color: var(--aber-code-text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
}

code {
  padding: 0.12em 0.35em;
  border-radius: var(--radius-sm);
  background: var(--aber-code-bg);
  color: var(--aber-code-text);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

pre code {
  padding: 0;
  background: transparent;
}

blockquote {
  margin: 20px 0;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--aber-border-strong);
  color: var(--aber-muted);
  font-family: var(--font-main);
}

hr {
  height: 1px;
  margin: 32px 0;
  border: 0;
  background: var(--aber-border);
}

footer {
  padding-top: 24px;
  padding-bottom: 48px;
  border-top: var(--line);
  color: var(--aber-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
}

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

input[type="search"],
input[type="text"] {
  min-height: 36px;
  border: 1px solid var(--aber-border);
  border-radius: var(--radius-md);
  background: var(--aber-raised);
  color: var(--aber-ink);
  padding: 7px 10px;
  outline: none;
}

input[type="search"]:focus,
input[type="text"]:focus {
  border-color: var(--aber-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--aber-accent) 16%, transparent);
}

:focus-visible {
  outline: 2px solid var(--aber-accent);
  outline-offset: 3px;
}

@media (max-width: 760px) {
  :root {
    --body-padding-inline: 16px;
  }

  body > header,
  header {
    padding-top: 36px;
    padding-bottom: 22px;
  }

  main {
    padding-top: 30px;
  }

  main > h1,
  main > h2 {
    font-size: 24px;
  }

  .posts-feed article,
  .post-entry article {
    padding: 20px 0 24px;
  }

  .posts-feed img,
  .post-entry img,
  .post-content img,
  article img {
    max-height: calc(100vh - 140px) !important;
  }
}

/* Centering correction: keep the timeline column centered in the viewport. */
body {
  margin: 0 !important;
  padding-inline: 0 !important;
}

body > header,
body > main,
body > footer,
body > div,
body > div > header,
body > div > main,
body > div > footer,
header,
main,
footer {
  box-sizing: border-box;
  width: min(calc(100% - (var(--body-padding-inline) * 2)), var(--width)) !important;
  max-width: var(--width) !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* Do not let a full-width site shell inherit the reading-column width. */
body > div {
  width: 100% !important;
  max-width: none !important;
  margin-inline: 0 !important;
}

body > div > header,
body > div > main,
body > div > footer {
  width: min(calc(100% - (var(--body-padding-inline) * 2)), var(--width)) !important;
  max-width: var(--width) !important;
  margin-inline: auto !important;
}

/* Preview-oriented media sizing: regular feed images should match the
 * clickable preview treatment while remaining proportional. */
.content .image-preview-wrap,
.content .image-preview-button {
  display: block;
  width: min(100%, 640px) !important;
  max-width: 100% !important;
  margin: 18px 0;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
}

.content .image-preview-wrap img,
.content .image-preview-button img,
.content img:not(.tg-emoji):not(.sticker):not(.link_preview_image):not(.modal-img) {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  height: auto !important;
  max-height: calc(100vh - 220px) !important;
  object-fit: contain;
  object-position: top center;
}

/* Multi-image posts: equal preview slots, no crop or masonry reordering. */
.content .image-list-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 12px;
  width: 100%;
  max-width: 100%;
  margin: 18px 0;
}

.content .image-list-container .image-preview-wrap,
.content .image-list-container .image-preview-button {
  width: 100% !important;
  max-width: 100% !important;
  margin: 0;
}

.content .image-list-container img {
  width: 100% !important;
  max-width: 100% !important;
  max-height: calc(100vh - 260px) !important;
  margin: 0;
  object-fit: contain;
  object-position: top center;
}

@media (max-width: 560px) {
  .content .image-preview-wrap,
  .content .image-preview-button {
    width: 100% !important;
  }

  .content .image-list-container img {
    max-height: calc(100vh - 180px) !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}