/* ==========================================================================
   Space news
   Two rankings: discussion reach and scientific value.
   ========================================================================== */

.signal-page {
  --discussed: #f1a57b;
  --discussed-soft: rgba(241, 165, 123, 0.13);
  --impacted: #9fc7f1;
  --impacted-soft: rgba(159, 199, 241, 0.12);
  --signal-line: rgba(223, 233, 255, 0.12);
  overflow-x: clip;
}

[data-theme="light"] .signal-page {
  --discussed: #a7582f;
  --discussed-soft: rgba(167, 88, 47, 0.09);
  --impacted: #315f91;
  --impacted-soft: rgba(49, 95, 145, 0.09);
  --signal-line: rgba(24, 33, 48, 0.12);
}

.signal-shell {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 104px 28px 96px;
}

.signal-hero {
  position: relative;
  min-height: 265px;
  padding: 0 4px 44px;
}

.signal-eyebrow {
  margin: 0;
  color: var(--text-dim);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: var(--type-tracking-label);
  text-transform: uppercase;
}

.signal-eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
}

.signal-live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--discussed);
  box-shadow: 0 0 0 4px var(--discussed-soft);
}

.signal-hero h1 {
  max-width: 760px;
  margin: 22px 0 24px;
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 400;
  letter-spacing: var(--type-tracking-heading);
  line-height: 0.98;
}

.signal-deck {
  max-width: 650px;
  margin: 0;
  color: var(--text-soft);
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.65;
}

.signal-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  color: var(--text-dim);
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}

.signal-controls {
  position: sticky;
  top: 74px;
  z-index: 20;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 18px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px) saturate(1.1);
  min-width: 0;
  max-width: 100%;
}

.period-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(68px, 1fr));
  flex: 1 1 auto;
  gap: 3px;
  width: 100%;
  min-width: 0;
  max-width: 100%;
}

.period-tab {
  display: grid;
  gap: 1px;
  place-content: center;
  min-height: 52px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.period-tab span {
  font-size: 12px;
  font-weight: 400;
}

.period-tab small {
  color: var(--text-dim);
  font-size: 8.5px;
  letter-spacing: var(--type-tracking-label);
  text-transform: uppercase;
}

.period-tab:hover {
  background: var(--surface);
  color: var(--text);
}

.period-tab.is-active {
  border-color: var(--signal-line);
  background: var(--surface);
  color: var(--text);
}

.period-tab.is-active small {
  color: var(--impacted);
}

.refresh-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 0 7px 0 10px;
  border-left: 1px solid var(--line);
}

.edition-state {
  max-width: 175px;
  margin: 0;
  color: var(--text-dim);
  font-size: 10px;
  line-height: 1.35;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.edition-state[data-tone="warn"] {
  color: var(--accent-warm);
}

.refresh-switch {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-soft);
  font-size: 10px;
  white-space: nowrap;
  cursor: pointer;
}

.refresh-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.refresh-switch-track {
  position: relative;
  width: 27px;
  height: 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.refresh-switch-track span {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: transform 0.18s ease, background 0.18s ease;
}

.refresh-switch input:checked + .refresh-switch-track {
  border-color: color-mix(in srgb, var(--success) 38%, var(--line));
  background: color-mix(in srgb, var(--success) 12%, transparent);
}

.refresh-switch input:checked + .refresh-switch-track span {
  background: var(--success);
  transform: translateX(11px);
}

.refresh-switch input:focus-visible + .refresh-switch-track {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.refresh-button {
  display: grid;
  width: 35px;
  height: 35px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
}

.refresh-button:hover {
  border-color: color-mix(in srgb, var(--impacted) 50%, var(--line));
  color: var(--text);
}

.refresh-button svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.refresh-button.is-busy svg {
  animation: signal-spin 0.8s linear infinite;
}

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

.signal-message {
  display: none;
  margin: 18px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text-soft);
  font-size: 11.5px;
}

.signal-message:not(:empty) {
  display: block;
}

.signal-message[data-tone="warn"] {
  border-color: color-mix(in srgb, var(--accent-warm) 30%, var(--line));
  background: color-mix(in srgb, var(--accent-warm) 6%, transparent);
}

.signal-rankings {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-top: 18px;
}

.signal-track {
  position: relative;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: transparent;
}

.signal-track-discussed {
  --track-color: var(--discussed);
  --track-soft: var(--discussed-soft);
}

.signal-track-impacted {
  --track-color: var(--impacted);
  --track-soft: var(--impacted-soft);
}

.signal-track-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 5px 4px 17px;
}

.signal-track-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 400;
}

.signal-track-head p {
  max-width: 44ch;
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 10.5px;
  line-height: 1.5;
}

.signal-track-discussed .signal-track-head h2 {
  color: var(--discussed);
}

.signal-track-impacted .signal-track-head h2 {
  color: var(--impacted);
}

.track-count {
  color: var(--text-dim);
  font-size: 9.5px;
  letter-spacing: var(--type-tracking-label);
  text-transform: uppercase;
  white-space: nowrap;
}

.story-list {
  display: grid;
  gap: 10px;
}

.story-card {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 13px 12px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: color-mix(in srgb, var(--surface-strong) 58%, transparent);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.story-card:hover,
.story-card:focus-within {
  border-color: color-mix(in srgb, var(--track-color) 34%, var(--line));
}

.story-rank {
  padding-top: 2px;
  color: var(--track-color);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--type-tracking-label);
}

.story-content {
  min-width: 0;
}

.story-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 7px;
  color: var(--text-dim);
  font-size: 9.5px;
  letter-spacing: 0;
  text-transform: uppercase;
}

.story-topic {
  color: var(--track-color);
}

.story-title {
  margin: 0;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.32;
  letter-spacing: var(--type-tracking-heading);
}

.story-title a {
  color: var(--text);
  text-decoration: none;
}

.story-title a:hover {
  color: var(--track-color);
}

.story-summary {
  display: -webkit-box;
  margin: 7px 0 0;
  overflow: hidden;
  color: var(--text-soft);
  font-size: 11.5px;
  line-height: 1.5;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.story-rationale {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-top: 11px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.signal-badge {
  display: inline;
  color: var(--track-color);
  font-size: 9.5px;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
}

.story-sites {
  min-width: 0;
  flex: 1 1 90px;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 9.5px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.story-actions {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-left: auto;
}

.story-action {
  display: inline-grid;
  min-width: 27px;
  height: 27px;
  padding: 0 7px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 9.5px;
  text-decoration: none;
  cursor: pointer;
}

.story-action:hover {
  border-color: color-mix(in srgb, var(--track-color) 38%, var(--line));
  color: var(--text);
}

.story-action svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.share-wrap {
  position: relative;
}

.share-menu {
  position: absolute;
  right: 0;
  bottom: calc(100% + 8px);
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(2, minmax(104px, 1fr));
  gap: 4px;
  width: 228px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.share-menu a,
.share-menu button {
  display: flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 8px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: 10px;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.share-menu a:hover,
.share-menu button:hover {
  background: var(--surface);
  color: var(--text);
}

.share-menu .native-share {
  grid-column: 1 / -1;
  color: var(--track-color);
}

.share-note {
  grid-column: 1 / -1;
  margin: 1px 0 0;
  padding: 5px 8px 3px;
  color: var(--text-dim);
  font-size: 8.5px;
  line-height: 1.4;
}

.story-skeleton {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 11px;
  min-height: 150px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: color-mix(in srgb, var(--surface-strong) 48%, transparent);
}

.story-skeleton > span,
.story-skeleton div {
  border-radius: 6px;
  background: linear-gradient(100deg, var(--surface) 20%, color-mix(in srgb, var(--text) 5%, transparent) 40%, var(--surface) 60%);
  background-size: 220% 100%;
  animation: signal-skeleton 1.5s ease infinite;
}

.story-skeleton > span {
  width: 23px;
  height: 10px;
}

.story-skeleton div {
  grid-column: 2;
  height: 12px;
}

.story-skeleton div:last-child {
  width: 74%;
  margin-top: -7px;
}

@keyframes signal-skeleton {
  to { background-position: -220% 0; }
}

.track-empty {
  display: grid;
  min-height: 220px;
  place-content: center;
  padding: 28px;
  border: 1px dashed var(--line);
  border-radius: 13px;
  color: var(--text-dim);
  font-size: 11.5px;
  line-height: 1.55;
  text-align: center;
}

.signal-method {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.signal-method summary {
  padding: 18px 2px 12px;
  color: var(--text-soft);
  font-size: 11.5px;
  cursor: pointer;
}

.signal-method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  padding: 6px 2px 14px;
}

.signal-method-grid h2 {
  margin: 0 0 6px;
  color: var(--text);
  font-size: 12px;
  font-weight: 400;
}

.signal-method-grid p,
.signal-attribution {
  margin: 0;
  color: var(--text-dim);
  font-size: 10.5px;
  line-height: 1.6;
}

.signal-attribution {
  padding: 0 2px 8px;
}

.story-card.share-target {
  animation: share-target 1.2s ease both;
}

@keyframes share-target {
  0%, 18% {
    border-color: var(--track-color);
    box-shadow: 0 0 0 3px var(--track-soft);
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

[data-theme="light"] .signal-controls,
[data-theme="light"] .share-menu {
  box-shadow: 0 12px 32px rgba(30, 45, 70, 0.12);
}

@media (max-width: 1020px) {
  .signal-shell {
    padding-right: 22px;
    padding-left: 22px;
  }

  .signal-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .refresh-tools {
    justify-content: flex-end;
    min-height: 38px;
    padding: 5px 7px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 820px) {
  .signal-shell {
    padding-top: 86px;
  }

  .signal-hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-bottom: 45px;
  }

  .signal-hero-copy {
    min-width: 0;
  }

  .signal-hero h1 {
    max-width: 700px;
  }

  .signal-rankings,
  .signal-method-grid {
    grid-template-columns: 1fr;
  }

  .signal-controls {
    top: 60px;
  }

  .period-tabs {
    overflow-x: auto;
    grid-template-columns: repeat(5, minmax(60px, 1fr));
    scrollbar-width: none;
  }

  .period-tabs::-webkit-scrollbar {
    display: none;
  }
}

@media (max-width: 560px) {
  .signal-shell {
    padding: 76px 14px 72px;
  }

  .signal-hero {
    padding: 10px 3px 34px;
  }

  .signal-hero h1 {
    margin-top: 17px;
    font-size: clamp(36px, 11.6vw, 52px);
  }

  .signal-deck {
    font-size: 14px;
  }

  .signal-controls {
    top: 56px;
    margin: 0 -3px;
  }

  .period-tab {
    min-height: 47px;
    padding: 5px 7px;
  }

  .refresh-tools {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    min-width: 0;
    flex-wrap: wrap;
  }

  .edition-state {
    max-width: none;
    text-align: left;
  }

  .signal-track {
    padding: 12px;
  }

  .story-card {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 8px;
    padding: 12px 10px;
  }

  .story-title {
    font-size: 14px;
  }

  .story-rationale {
    align-items: flex-start;
  }

  .story-sites {
    flex-basis: 100%;
    order: 3;
  }

  .share-menu {
    right: -20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .refresh-button.is-busy svg,
  .story-skeleton > span,
  .story-skeleton div {
    animation: none;
  }

  .story-card,
  .period-tab,
  .refresh-switch-track span {
    transition: none;
  }
}