:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --text-faint: #9a9a9a;
  --border: #ececec;
  --hover-bg: #f7f7f7;
  --accent: #1a1a1a;
  --chip-bg: #f2f2f2;
  --chip-active-bg: #1a1a1a;
  --chip-active-text: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --text: #ededed;
    --text-muted: #9a9a9a;
    --text-faint: #6b6b6b;
    --border: #1f1f1f;
    --hover-bg: #151515;
    --accent: #ededed;
    --chip-bg: #171717;
    --chip-active-bg: #ededed;
    --chip-active-text: #0a0a0a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 600px;
  margin: 0 auto;
  padding: 72px 24px 80px;
}

/* Profile header */
.profile {
  text-align: center;
  margin-bottom: 48px;
}

.avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--chip-bg);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 600;
}

.profile h1 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 8px;
}

.profile .bio {
  color: var(--text-muted);
  font-size: 0.92rem;
  max-width: 380px;
  margin: 0 auto 16px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

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

/* Search + filters */
.search-bar {
  margin-bottom: 40px;
}

.search-bar input[type="search"] {
  width: 100%;
  font-size: 0.9rem;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--hover-bg);
  color: var(--text);
  outline: none;
  margin-bottom: 12px;
}

.search-bar input[type="search"]:focus {
  border-color: var(--text-faint);
}

.filter-chips,
.tag-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-chips {
  margin-top: 8px;
}

.filter-chips button,
.tag-chips button {
  font-size: 0.78rem;
  padding: 5px 11px;
  border-radius: 999px;
  border: none;
  background: var(--chip-bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-chips button:hover,
.tag-chips button:hover {
  color: var(--text);
}

.filter-chips button.active,
.tag-chips button.active {
  background: var(--chip-active-bg);
  color: var(--chip-active-text);
}

.tags-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  padding: 5px 11px;
  margin-top: 8px;
  border-radius: 999px;
  border: 1px dashed var(--border);
  background: none;
  color: var(--text-faint);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tags-toggle:hover {
  color: var(--text);
  border-color: var(--text-faint);
}

.tags-toggle[aria-expanded="true"] {
  color: var(--text);
  border-style: solid;
  background: var(--chip-bg);
}

.tags-toggle-count {
  font-variant-numeric: tabular-nums;
}

.tag-chips[hidden] {
  display: none;
}

/* Sections */
main section {
  margin-bottom: 36px;
}

main section.hidden {
  display: none;
}

main h2 {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin: 0 0 4px;
}

main ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

main li {
  border-bottom: 1px solid var(--border);
}

main li:last-child {
  border-bottom: none;
}

main li.hidden {
  display: none;
}

.row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  text-decoration: none;
  color: inherit;
  padding: 12px 8px;
  margin: 0 -8px;
  border-radius: 6px;
  transition: background 0.15s ease;
}

.row:hover {
  background: var(--hover-bg);
}

.row-main {
  min-width: 0;
}

.row-title {
  font-size: 0.92rem;
  color: var(--text);
  display: block;
}

.row-tags {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 2px;
}

.row-date {
  font-size: 0.78rem;
  color: var(--text-faint);
  white-space: nowrap;
  flex-shrink: 0;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 40px 0;
}

footer {
  margin-top: 56px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.78rem;
}

/* Menu toggle (hamburger) */
.menu-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 30;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 8px;
  background: var(--chip-bg);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 15px;
  height: 1.5px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Backdrop */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 20;
}

.backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* Side drawer */
.nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: min(300px, 85vw);
  background: var(--bg);
  border-right: 1px solid var(--border);
  z-index: 25;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.28s ease;
}

.nav-drawer.open {
  transform: translateX(0);
}

.menu-close {
  align-self: flex-start;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
  margin-bottom: 28px;
}

.drawer-links {
  list-style: none;
  margin: 0 0 auto;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.drawer-links a {
  text-decoration: none;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 500;
}

.drawer-links a:hover {
  color: var(--text-muted);
}

.drawer-social {
  display: flex;
  gap: 18px;
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--border);
}

.drawer-social a {
  color: var(--text-faint);
  display: flex;
  transition: color 0.15s ease;
}

.drawer-social a:hover {
  color: var(--text);
}

body.drawer-open {
  overflow: hidden;
}