:root {
  color-scheme: light dark;
  --color-canvas: #fdf6e3;
  --color-surface: #fffdf5;
  --color-surface-raised: #fffdf5;
  --color-surface-muted: #eee8d5;
  --color-text-primary: #073642;
  --color-text-secondary: #657b83;
  --color-separator: #d7cfb9;
  --color-separator-strong: #93a1a1;
  --color-accent: #268bd2;
  --color-accent-hover: #006d9c;
  --color-accent-soft: #e3f2f7;
  --color-cyber: #cb4b16;
  --color-cyber-soft: #f8e8df;
  --color-warning: #8b6f00;
  --color-warning-surface: #f7efc8;
  --color-focus: #268bd2;
  --color-focus-glow: rgb(38 139 210 / 18%);
  --color-status: #739900;
  --color-pinned: #6c71c4;
  --color-pinned-soft: #eceaf8;
  --color-shadow: rgb(88 110 117 / 10%);
  --color-shadow-hover: rgb(88 110 117 / 16%);
  --color-glow: rgb(42 161 152 / 10%);
  --color-scrim: rgb(255 253 245 / 84%);
  --radius-control: 12px;
  --radius-group: 22px;
  --font-size-title: clamp(2rem, 4vw, 3.2rem);
  --font-size-heading: 1rem;
  --font-size-body: 0.92rem;
  --font-size-control: 0.875rem;
  --font-size-meta: 0.75rem;
  --font-weight-title: 680;
  --font-weight-heading: 650;
  --font-weight-body: 400;
  --font-weight-meta: 550;
  --line-height-title: 1;
  --line-height-body: 1.5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-text-primary);
  background:
    radial-gradient(circle at 50% -8rem, var(--color-glow), transparent 36rem),
    var(--color-canvas);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

.skip-link {
  position: fixed;
  top: -5rem;
  left: 16px;
  z-index: 20;
  padding: 12px 16px;
  border-radius: var(--radius-control);
  color: var(--color-surface);
  background: var(--color-text-primary);
}

.skip-link:focus {
  top: 16px;
}

.site-header,
main,
.site-footer {
  width: min(1200px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  padding: 0;
}

.site-nav {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--color-separator);
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border: 4px solid var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--color-accent-soft);
}

.build-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-meta);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-status);
}

h1,
p {
  text-wrap: pretty;
}

main {
  padding: 56px 0 96px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.section-heading h1 {
  margin: 0;
  font-size: var(--font-size-title);
  font-weight: var(--font-weight-title);
  letter-spacing: -0.045em;
  line-height: var(--line-height-title);
}

.section-heading > p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.section-heading strong {
  color: var(--color-text-primary);
}

.controls {
  display: grid;
  grid-template-columns: minmax(16rem, 2fr) minmax(10rem, 1fr) minmax(12rem, 1fr) auto;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-group);
  background: var(--color-scrim);
  box-shadow: 0 1px 1px var(--color-shadow);
  backdrop-filter: blur(20px) saturate(150%);
}

label {
  display: grid;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-heading);
}

input,
select,
button {
  min-height: 44px;
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-control);
  color: var(--color-text-primary);
  background: var(--color-surface-raised);
  font-size: var(--font-size-control);
}

input,
select {
  width: 100%;
  padding: 10px 12px;
}

input::placeholder {
  color: var(--color-text-secondary);
}

button {
  align-self: end;
  padding: 10px 18px;
  cursor: pointer;
  font-weight: 600;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

:focus-visible {
  outline: 0;
  box-shadow: 0 0 0 4px var(--color-focus-glow);
}

.source-warning {
  margin: 24px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-control);
  color: var(--color-warning);
  background: var(--color-warning-surface);
  font-size: 0.86rem;
}

.source-warning summary {
  min-height: 44px;
  padding: 10px 0;
  cursor: pointer;
  font-weight: 650;
}

.reading-list {
  margin-top: 24px;
}

.table-wrap {
  overflow: hidden;
  border: 1px solid var(--color-separator);
  border-radius: 16px;
  background: var(--color-surface);
  box-shadow: 0 1px 2px var(--color-shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.item-row[hidden] {
  display: none;
}

th {
  padding: 12px 14px;
  color: var(--color-text-secondary);
  background: var(--color-surface-muted);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-heading);
  letter-spacing: 0.02em;
  text-align: left;
}

th:nth-child(1) { width: 10%; }
th:nth-child(2) { width: 12%; }
th:nth-child(3) { width: 25%; }
th:nth-child(4) { width: 31%; }
th:nth-child(5) { width: 16%; }
th:nth-child(6) { width: 6%; }

td {
  padding: 18px 14px;
  border-top: 1px solid var(--color-separator);
  vertical-align: top;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-body);
  line-height: var(--line-height-body);
}

tbody tr {
  transition: background-color 180ms ease;
}

tbody tr:hover {
  background: var(--color-accent-soft);
}

td time,
.item-source {
  color: var(--color-text-secondary);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-meta);
}

.category,
.always,
.pinned {
  padding: 3px 7px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.category-ai {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.category-cyber {
  color: var(--color-cyber);
  background: var(--color-cyber-soft);
}

.always {
  color: var(--color-warning);
  background: var(--color-warning-surface);
}

.pinned {
  color: var(--color-pinned);
  background: var(--color-pinned-soft);
}

.item-title a {
  font-size: var(--font-size-heading);
  font-weight: var(--font-weight-heading);
  line-height: 1.35;
  text-decoration: none;
}

.item-title a:hover,
.item-link a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.item-description {
  color: var(--color-text-secondary);
}

.item-link {
  text-align: right;
}

.item-link a {
  color: var(--color-accent);
  font-size: var(--font-size-meta);
  font-weight: var(--font-weight-heading);
  text-decoration: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding: 64px 24px;
  border: 1px dashed var(--color-separator-strong);
  border-radius: var(--radius-group);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  text-align: center;
}

.empty-state h2 {
  margin-top: 0;
  color: var(--color-text-primary);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0 48px;
  border-top: 1px solid var(--color-separator);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  min-height: 44px;
}

@media (max-width: 900px) {
  .controls {
    grid-template-columns: 1fr 1fr;
  }

  .search-control {
    grid-column: 1 / -1;
  }

}

@media (max-width: 600px) {
  .site-header,
  main,
  .site-footer {
    width: min(calc(100% - 24px), 1200px);
  }

  .site-nav,
  .section-heading,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    padding: 12px 0;
  }

  main {
    padding-top: 40px;
  }

  .controls {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .search-control {
    grid-column: auto;
  }

  .table-wrap {
    overflow: visible;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  table,
  tbody,
  tr,
  td {
    display: block;
    width: 100%;
  }

  thead {
    display: none;
  }

  .item-row {
    margin-bottom: 12px;
    padding: 16px;
    border: 1px solid var(--color-separator);
    border-radius: 16px;
    background: var(--color-surface);
  }

  td {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 12px;
    padding: 7px 0;
    border: 0;
  }

  td::before {
    content: attr(data-label);
    color: var(--color-text-secondary);
    font-size: var(--font-size-meta);
    font-weight: var(--font-weight-heading);
  }

  .item-link {
    text-align: left;
  }

  .item-link::before {
    content: "Link";
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-canvas: #002b36;
    --color-surface: #073642;
    --color-surface-raised: #0b414d;
    --color-surface-muted: #0a3b46;
    --color-text-primary: #fdf6e3;
    --color-text-secondary: #93a1a1;
    --color-separator: #31545c;
    --color-separator-strong: #586e75;
    --color-accent: #2aa198;
    --color-accent-hover: #5bc4ba;
    --color-accent-soft: #124c52;
    --color-cyber: #f08b5d;
    --color-cyber-soft: #5a2c20;
    --color-warning: #e5c34b;
    --color-warning-surface: #4b421b;
    --color-focus: #2aa198;
    --color-focus-glow: rgb(42 161 152 / 24%);
    --color-status: #859900;
    --color-pinned: #b8a9e8;
    --color-pinned-soft: #3c365e;
    --color-shadow: rgb(0 20 26 / 30%);
    --color-shadow-hover: rgb(0 20 26 / 42%);
    --color-glow: rgb(42 161 152 / 14%);
    --color-scrim: rgb(7 54 66 / 84%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}