/* ============================================================
   News Retriever — design system
   Editorial typography + restrained palette + ma (negative space)
   ============================================================ */

:root {
  /* Paper / Ink palette — clean editorial off-white */
  --paper:        #faf8f3;
  --paper-soft:   #ffffff;
  --paper-card:   #ffffff;
  --paper-deep:   #f1ede4;
  --ink:          #14110d;
  --ink-soft:     #50473e;
  --ink-faint:    #8c8275;
  --ink-mute:     #c8bfb1;
  --rule:         #e3dccd;
  --rule-soft:    #efe9dc;
  --accent:       #b34a36;       /* shu — muted vermillion */
  --accent-soft:  #f3ddd6;
  --accent-deep:  #8a3826;

  /* Type */
  --font-display: 'Shippori Mincho B1', 'Cormorant Garamond', 'Iowan Old Style', Georgia, serif;
  --font-body:    'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* Rhythm */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 20px;
  --space-5: 36px;
  --space-6: 60px;
  --space-7: 96px;
  --space-8: 144px;

  /* Layout */
  --measure: 720px;     /* primary reading width */
  --measure-wide: 1040px;
  --gutter: clamp(24px, 6vw, 96px);

  --duration-fast: 140ms;
  --duration: 280ms;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:        #15110d;
    --paper-soft:   #1c1813;
    --paper-card:   #221d17;
    --paper-deep:   #100c08;
    --ink:          #ede5d4;
    --ink-soft:     #a89e8e;
    --ink-faint:    #6e6558;
    --ink-mute:     #423a31;
    --rule:         #3a3127;
    --rule-soft:    #2a2218;
    --accent:       #d8634a;
    --accent-soft:  #3a201a;
    --accent-deep:  #f08470;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11", "kern";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* Grain disabled in cleaner v2 — keep stub so HTML doesn't break */
.paper-grain { display: none; }

a { color: inherit; text-decoration: none; }

/* Default selection in vermillion */
::selection { background: var(--accent-soft); color: var(--accent-deep); }

/* ============================================================
   App shell — left rail + main content
   ============================================================ */

.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  width: 220px;
  padding: var(--space-5) var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  border-right: 1px solid var(--rule);
  background: var(--paper);
  z-index: 1;
}

.rail__brand {
  display: inline-flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--ink);
  text-decoration: none;
}

.rail__mark {
  display: inline-block;
  width: 4px;
  min-width: 4px;
  height: 36px;
  background: var(--accent);
  border-radius: 1px;
  margin-top: 4px;
}

.rail__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.rail__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--rule);
}

.rail__date {
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.rail__issue { color: var(--accent); font-weight: 500; }

.rail__nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.rail-link {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: 6px 0;
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--ink-faint);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}
.rail-link:hover { color: var(--ink); }

.rail-link__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.rail-link__name {
  font-weight: 500;
  letter-spacing: -0.005em;
}

.rail-link__count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.rail-link.is-empty { opacity: 0.42; }
.rail-link.is-empty:hover { opacity: 0.7; }

.rail-link.is-active { color: var(--ink); }
.rail-link.is-active .rail-link__num,
.rail-link.is-active .rail-link__count { color: var(--accent); }
.rail-link.is-active .rail-link__name {
  position: relative;
}
.rail-link.is-active .rail-link__name::before {
  content: "";
  position: absolute;
  left: -10px; top: 50%;
  width: 4px; height: 4px;
  background: var(--accent);
  transform: translateY(-50%);
  border-radius: 50%;
}

.rail__foot {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  padding-top: var(--space-3);
  border-top: 1px solid var(--rule);
}

.content {
  min-width: 0;
  padding: var(--space-5) var(--gutter) var(--space-7);
  background: var(--paper-soft);
}

.content__head {
  max-width: var(--measure);
  margin: 0 auto var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--rule);
}

.content__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.content__kicker::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--accent);
}

.content__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.content__lede {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 64ch;
}

.content__body {
  max-width: var(--measure);
  margin: 0 auto;
}

/* Per-section editorial summary — sits above the item list */
.section-summary {
  max-width: var(--measure);
  margin: 0 auto var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-display);
  font-size: clamp(17px, 1.7vw, 19px);
  line-height: 1.55;
  color: var(--ink);
  font-weight: 400;
}

.section-summary p {
  margin: 0 0 var(--space-3);
}
.section-summary p:last-child { margin-bottom: 0; }

.section-summary a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color var(--duration-fast) var(--ease);
}
.section-summary a:hover { border-bottom-color: var(--accent); }

.section-summary strong { color: var(--ink); font-weight: 600; }
.section-summary em { font-style: italic; color: var(--ink-soft); }

/* ============================================================
   Item list — section pages
   ============================================================ */

.item {
  display: grid;
  grid-template-columns: 48px 1fr;
  column-gap: var(--space-5);
  padding: var(--space-7) 0;
  border-top: 1px solid var(--rule);
  position: relative;
}
.item:last-child { border-bottom: 1px solid var(--rule); }

.item__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  padding-top: 8px;
  text-align: right;
  user-select: none;
}

.item__head { margin: 0 0 var(--space-4); }

.item__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.item__title a {
  transition: color var(--duration-fast) var(--ease);
}
.item__title a:hover { color: var(--accent); }

/* Image — appears between title and meta when an image_url is detected */
.item__image {
  display: block;
  width: 100%;
  margin: var(--space-4) 0 var(--space-3);
  background: var(--paper-deep);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
}

.item__meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.item__source {
  color: var(--ink-soft);
  font-weight: 500;
}
.item__url {
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 1px dotted var(--ink-mute);
}
.item__url:hover { color: var(--accent); border-color: var(--accent); }

.item__tldr {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-size: clamp(18px, 1.9vw, 20px);
  line-height: 1.55;
  color: var(--ink);
  font-weight: 400;
}

.item__bullets {
  margin: 0;
  padding-left: var(--space-4);
  list-style: none;
}
.item__bullets li {
  position: relative;
  padding: var(--space-1) 0 var(--space-1) var(--space-3);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.item__bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 6px; height: 1px;
  background: var(--ink-mute);
}

.item__body { margin-top: var(--space-3); }
.item__body p {
  margin: var(--space-2) 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.item__body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--paper-card);
  padding: 1px 5px;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
}

.item.is-dimmed { opacity: 0.42; }
.item.is-dimmed:hover { opacity: 1; }

.item.flash-target { background: var(--accent-soft); animation: flash 1.6s ease-out; }
@keyframes flash {
  0%   { background: var(--accent-soft); }
  100% { background: transparent; }
}

/* ============================================================
   Overview page — editorial article
   ============================================================ */

.overview-body {
  max-width: var(--measure);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
}

.overview-body > p:first-of-type {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: var(--space-5);
}

.overview-body p { margin: 0 0 var(--space-4); }

.overview-body h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: var(--space-6) 0 var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--rule);
}

.overview-body h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  margin: var(--space-5) 0 var(--space-2);
}

.overview-body ul {
  margin: 0 0 var(--space-4);
  padding-left: var(--space-4);
  list-style: none;
}
.overview-body ul li {
  position: relative;
  padding: var(--space-2) 0 var(--space-2) var(--space-4);
  border-top: 1px solid var(--rule-soft);
}
.overview-body ul li:first-child { border-top: 0; }
.overview-body ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 19px;
  width: 8px; height: 8px;
  background: var(--accent);
  transform: rotate(45deg);
}
.overview-body ul li strong:first-child { color: var(--ink); }

.overview-body a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-soft);
  transition: border-color var(--duration-fast) var(--ease);
}
.overview-body a:hover { border-bottom-color: var(--accent); }

.overview-body em { color: var(--ink-soft); font-style: italic; }
.overview-body strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   Archive page
   ============================================================ */

.archive {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
  border-top: 1px solid var(--rule);
}
.archive__row { border-bottom: 1px solid var(--rule); }
.archive__link {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: baseline;
  column-gap: var(--space-4);
  padding: var(--space-3) 0;
  color: var(--ink-soft);
  transition: color var(--duration-fast) var(--ease);
}
.archive__link:hover { color: var(--accent); }
.archive__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.archive__date {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
}
.archive__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
}
.archive__link:hover .archive__date { color: var(--accent); }

/* ============================================================
   Sources page
   ============================================================ */

.sources {
  max-width: var(--measure-wide);
  margin: 0 auto;
}

.source-group {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--ink);
}
.source-group:last-child { border-bottom: 1px solid var(--ink); }

.source-group__title {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: baseline;
  column-gap: var(--space-4);
  margin: 0 0 var(--space-5);
}
.source-group__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  text-transform: uppercase;
  text-align: right;
}
.source-group__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: -0.015em;
  color: var(--ink);
}
.source-group__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.source-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0;
  border-top: 1px solid var(--rule-soft);
}

.source {
  padding: var(--space-3) var(--space-4) var(--space-3) 0;
  border-bottom: 1px solid var(--rule-soft);
  border-right: 1px solid var(--rule-soft);
}

.source__body { min-width: 0; }

.source__label {
  display: block;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 2px;
}

.source__notes {
  display: block;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--ink-soft);
  margin: 4px 0 0;
}

/* ============================================================
   Footer & navigation
   ============================================================ */

.page-foot-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  max-width: var(--measure);
  margin: var(--space-6) auto 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--rule);
}

.page-foot-nav a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3) 0;
  color: var(--ink-soft);
  transition: color var(--duration-fast) var(--ease);
}
.page-foot-nav a:hover { color: var(--accent); }
.page-foot-nav a.next { text-align: right; align-items: flex-end; }

.page-foot-nav__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.page-foot-nav__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
}

/* Footer is rendered as part of the rail in the new layout — kept for
   backwards compatibility with the sources page if needed */
.footer { display: none; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .rail {
    position: relative;
    width: 100%;
    height: auto;
    flex-direction: column;
    gap: var(--space-4);
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: var(--space-4) var(--gutter);
  }
  .rail__nav {
    flex-direction: row;
    flex-wrap: wrap;
    overflow-x: auto;
    gap: var(--space-3);
  }
  .rail-link { grid-template-columns: auto auto auto; padding: 4px 0; }
  .rail-link.is-active .rail-link__name::before { display: none; }
  .rail__foot { display: none; }
  .content { padding: var(--space-5) var(--gutter); }
}

@media (max-width: 600px) {
  .item { grid-template-columns: 32px 1fr; column-gap: var(--space-3); }
  .item__num { font-size: 10px; padding-top: 6px; }
  .source-list { grid-template-columns: 1fr; }
  .source-group__title { grid-template-columns: 50px 1fr auto; }
  .source { grid-template-columns: 60px 1fr; }
}