/* ============================================
   CSS Custom Properties / Palette
   ============================================ */
:root {
  --color-spl-1: #fc3;
  --color-spl-1-contrast: #000;
  --color-spl-2: #745500;
  --color-spl-2-contrast: #fff;
  --color-spl-3: #079fe4;
  --color-spl-3-contrast: #000;
  --color-spl-4: #026fa2;
  --color-spl-4-contrast: #fff;
  --color-spl-5: #835fc0;
  --color-spl-5-contrast: #fff;
  --color-spl-6: #ad93e2;
  --color-spl-6-contrast: #000;

  --bg: #fff;
  --text: #1a1a1a;
  --text-muted: #666;
  --text-light: #999;
  --border-light: #eee;
  --card-bg: #fff;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.06);
  --card-shadow-hover: 0 4px 16px rgba(0,0,0,0.1);

  --header-pad-full: 3rem 2rem 2rem;
  --avatar-size-full: 96px;
  --avatar-size-shrunk: 40px;

  --max-width: 1200px;
  --column-gap: 20px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Atkinson Hyperlegible Next', 'Atkinson Hyperlegible', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-spl-4);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--color-spl-3); }

img { display: block; max-width: 100%; }

/* ============================================
   Scroll Sentinel (for header shrink)
   ============================================ */
.scroll-sentinel {
  position: absolute;
  top: 0;
  height: 1px;
  width: 1px;
  pointer-events: none;
}

/* ============================================
   Full Profile Header (scrolls away normally)
   ============================================ */
.profile-header {
  position: relative;
  z-index: 50;
  background: var(--bg);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: center;
  padding: var(--header-pad-full);
  gap: 2rem;
  will-change: opacity;
  backface-visibility: hidden;
}

/* Avatar */
.avatar {
  width: var(--avatar-size-full);
  height: var(--avatar-size-full);
  border-radius: 16px;
  object-fit: cover;
  flex-shrink: 0;
}

/* Header text block */
.header-name {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text);
}

.header-tagline {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.header-bio {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  max-width: 540px;
  line-height: 1.55;
}

/* Social links row */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 1rem;
  justify-content: center;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.social-links a:hover {
  color: var(--color-spl-3);
}

.social-links svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============================================
   Compact Bar (separate element, fixed overlay)
   ============================================ */
.compact-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.compact-bar.visible {
  pointer-events: auto;
}

.compact-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 0.6rem 2rem;
  gap: 0.85rem;
}

.compact-bar .compact-avatar {
  width: var(--avatar-size-shrunk);
  height: var(--avatar-size-shrunk);
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
}

.compact-bar .compact-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.compact-bar .compact-spacer {
  flex: 1;
}

.compact-bar .compact-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.compact-bar .compact-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.compact-bar .compact-links a:hover {
  color: var(--color-spl-3);
}

.compact-bar .compact-links svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ============================================
   Feed Filter Tabs
   ============================================ */
.feed-filters {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border: none;
  border-radius: 100px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: #f5f5f5;
  color: var(--text);
}

.filter-btn.active {
  background: var(--text);
  color: var(--bg);
}

/* ============================================
   Timeline Grid (CSS Grid — preserves reading order)
   ============================================ */
.masonry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--column-gap);
  align-items: start;
}

@media (max-width: 900px) {
  .masonry-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .masonry-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Timeline Cards (shared)
   ============================================ */
.card {
  border-radius: 12px;
  overflow: hidden;
  background: var(--card-bg);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

/* -- Source badge -- */
.card-source {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  line-height: 1;
}

.card-source.mastodon {
  background: var(--color-spl-6);
  color: var(--color-spl-6-contrast);
}

.card-source.blog {
  background: var(--color-spl-1);
  color: var(--color-spl-1-contrast);
}

.card-source.glass {
  background: var(--color-spl-3);
  color: var(--color-spl-3-contrast);
}

/* -- Card body -- */
.card-body {
  padding: 1rem 1.15rem 1.15rem;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}

.card-date {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* -- Photo card (Glass) -- */
.card-photo img {
  width: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.5s ease;
}

.card-photo:hover img {
  filter: grayscale(0%);
}

.card-photo .card-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* -- Mastodon card -- */
.card-mastodon .card-content {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text);
}

.card-mastodon .card-content p {
  margin-bottom: 0.5rem;
}

.card-mastodon .card-content p:last-child {
  margin-bottom: 0;
}

.card-mastodon .card-content a {
  color: var(--color-spl-4);
  word-break: break-all;
}

.card-mastodon .card-content a.prettified-link {
  word-break: normal;
  background: #f0f4f8;
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
  transition: background 0.2s ease;
}

.card-mastodon .card-content a.prettified-link:hover {
  background: #e0eaf3;
}

/* Mastodon media (not Glass, so full color) */
.card-mastodon .card-media img {
  width: 100%;
  border-radius: 8px;
  margin-top: 0.75rem;
}

/* -- Link preview card (for URLs in Mastodon posts) -- */
.card-link-preview {
  display: flex;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  overflow: hidden;
  margin-top: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease;
}

.card-link-preview:hover {
  background: #f9f9f9;
}

.card-link-preview-image {
  width: 100px;
  min-height: 80px;
  object-fit: cover;
  flex-shrink: 0;
}

.card-link-preview-text {
  padding: 0.6rem 0.75rem;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.15rem;
}

.card-link-preview-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link-preview-description {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link-preview-domain {
  font-size: 0.7rem;
  color: var(--text-light);
  margin-top: 0.1rem;
}

/* Large image variant (when card has big image and no/short description) */
.card-link-preview.has-large-image {
  flex-direction: column;
}

.card-link-preview.has-large-image .card-link-preview-image {
  width: 100%;
  height: 160px;
}

/* -- Blog card -- */
.card-blog .card-title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.card-blog .card-excerpt {
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.card-blog .card-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* ============================================
   Loading / Empty States
   ============================================ */
.loading-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-light);
  font-size: 1rem;
}

.loading-spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid var(--border-light);
  border-top-color: var(--color-spl-3);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--text-light);
  font-size: 0.8rem;
}

.site-footer a {
  color: var(--text-muted);
}

/* ============================================
   Responsive tweaks
   ============================================ */
@media (max-width: 700px) {
  html { font-size: 16px; }

  .header-inner {
    padding: 2rem 1.25rem 1.5rem;
  }

  .header-name { font-size: 1.8rem; }

  .avatar { width: 80px; height: 80px; }

  .main-content { padding: 1.5rem 1rem 3rem; }

  .social-links { gap: 0.75rem; }
}

/* ============================================
   Skeleton loading cards
   ============================================ */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 12px;
}

.skeleton-photo { height: 280px; }
.skeleton-text { height: 180px; }
.skeleton-blog { height: 320px; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}