:root {
  color-scheme: light;
  --background: #ffffff;
  --foreground: #000000;
  --muted: #f5f5f5;
  --muted-foreground: #525252;
  --border: #000000;
  --border-light: #e5e5e5;
  --card: #ffffff;
  --card-foreground: #000000;
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Source Serif 4", Georgia, "Songti SC", "STSong", serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--foreground);
  background:
    linear-gradient(rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.98)),
    repeating-linear-gradient(0deg, transparent, transparent 1px, #000 1px, #000 2px);
  background-size: auto, 100% 4px;
  font-family: var(--font-body);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 3px solid var(--foreground);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10;
  padding: 12px 16px;
  color: var(--background);
  background: var(--foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transform: translateY(-100%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 18px calc(104px + env(safe-area-inset-bottom));
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 4px solid var(--border);
}

.topbar::after {
  width: 12px;
  height: 12px;
  border: 2px solid var(--border);
  content: "";
}

.eyebrow,
.count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted-foreground);
  text-transform: uppercase;
}

.count {
  grid-column: 2;
  grid-row: 1;
  padding-bottom: 6px;
  text-align: right;
}

h1 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(56px, 17vw, 128px);
  font-weight: 700;
  line-height: 0.88;
  letter-spacing: -0.05em;
}

.toolbar {
  display: grid;
  gap: 0;
  margin-bottom: 28px;
  border: 2px solid var(--border);
  background: var(--background);
}

.search-wrap,
.date-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 0 14px;
  border: 0;
  background: var(--background);
}

.search-wrap {
  border-bottom: 1px solid var(--border);
}

.search-wrap span,
.date-wrap span {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--foreground);
  text-transform: uppercase;
}

.search-wrap input,
.date-wrap input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--foreground);
  background: transparent;
  font-family: var(--font-body);
  font-size: 17px;
}

.search-wrap input::placeholder {
  color: var(--muted-foreground);
  font-style: italic;
}

.search-wrap:focus-within,
.date-wrap:focus-within {
  box-shadow: inset 0 -4px 0 var(--foreground);
}

.date-filter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 54px;
  align-items: stretch;
}

.precision-control {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  min-height: 54px;
  border-right: 1px solid var(--border);
  background: var(--background);
}

.precision-option,
.clear-date {
  min-width: 44px;
  min-height: 44px;
  border: 0;
  color: var(--foreground);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: color 100ms, background-color 100ms;
}

.precision-option + .precision-option {
  border-left: 1px solid var(--border-light);
}

.precision-option.is-active,
.precision-option:hover,
.clear-date:hover {
  color: var(--background);
  background: var(--foreground);
}

.clear-date {
  border-left: 1px solid var(--border);
  font-size: 22px;
  line-height: 1;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.month-group {
  position: relative;
  margin: 0 0 34px;
  border-top: 1px solid var(--border);
}

.month-title {
  position: sticky;
  top: 0;
  z-index: 1;
  margin: 0 -18px 0;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--foreground);
  background:
    linear-gradient(rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.96)),
    repeating-linear-gradient(45deg, transparent, transparent 40px, #000 40px, #000 42px);
  background-size: auto, auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.post {
  margin: 0;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--border-light);
  color: var(--card-foreground);
  background: transparent;
  transition: color 100ms, background-color 100ms, padding 100ms;
}

.post:hover {
  padding-right: 14px;
  padding-left: 14px;
  color: var(--background);
  background: var(--foreground);
  border-bottom-color: var(--foreground);
}

.post time,
.surprise-date {
  display: block;
  margin-bottom: 12px;
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.post:hover time {
  color: var(--background);
}

.post-text {
  margin: 0;
  font-size: 18px;
  line-height: 1.72;
  white-space: pre-wrap;
  word-break: break-word;
}

.load-more,
.primary-action {
  width: 100%;
  min-height: 56px;
  border: 2px solid var(--border);
  color: var(--background);
  background: var(--foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 100ms, background-color 100ms;
}

.load-more:hover,
.primary-action:hover {
  color: var(--foreground);
  background: var(--background);
}

.load-more[hidden] {
  display: none;
}

.surprise-card {
  position: relative;
  min-height: 52vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 16px 0 18px;
  padding: 28px 22px;
  border: 2px solid var(--border);
  color: var(--foreground);
  background:
    linear-gradient(rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.98)),
    linear-gradient(#00000008 1px, transparent 1px),
    linear-gradient(90deg, #00000008 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
}

.surprise-card::before {
  position: absolute;
  top: 14px;
  right: 18px;
  content: "“";
  font-family: var(--font-display);
  font-size: 96px;
  line-height: 1;
  opacity: 0.08;
}

.surprise-card .post-text {
  position: relative;
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.72;
  letter-spacing: 0;
}

.empty {
  margin: 0;
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.tabbar {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 0 0 env(safe-area-inset-bottom);
  border-top: 4px solid var(--border);
  background: var(--background);
}

.tab {
  display: grid;
  place-items: center;
  gap: 4px;
  min-height: 64px;
  border: 0;
  color: var(--foreground);
  background: var(--background);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 100ms, background-color 100ms;
}

.tab + .tab {
  border-left: 1px solid var(--border);
}

.tab-icon {
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1;
}

.tab.is-active,
.tab:hover {
  color: var(--background);
  background: var(--foreground);
}

@media (min-width: 680px) {
  .app-shell {
    padding-top: 34px;
  }

  .topbar {
    margin-bottom: 26px;
  }

  .post {
    padding-top: 28px;
    padding-bottom: 30px;
  }

  .post-text {
    font-size: 20px;
  }

  .surprise-card .post-text {
    font-size: 20px;
  }
}

@media (max-width: 374px) {
  .date-filter {
    grid-template-columns: 1fr 54px;
  }

  .precision-control {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}