styles.css

:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --panel: #ffffff;
  --panel-alt: #f8fafc;
  --ink: #17202a;
  --muted: #647181;
  --faint: #8b96a5;
  --line: #dce2ea;
  --line-strong: #c9d2de;
  --active: #2f6fed;
  --active-soft: #e8f0ff;
  --green: #207a52;
  --green-soft: #e8f7ef;
  --amber: #92620d;
  --amber-soft: #fff4d9;
  --red: #a33a32;
  --red-soft: #ffebe8;
  --shadow: 0 12px 32px rgba(18, 33, 52, 0.08);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(420px, 1fr) 380px;
  height: 100vh;
  min-height: 680px;
  overflow: hidden;
}

.sidebar,
.feed-pane,
.detail-pane {
  min-width: 0;
  height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 22px 14px;
  background: #202b3a;
  color: #f8fbff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #edf3ff;
  color: #24477f;
  font-weight: 800;
  font-size: 14px;
}

.brand-kicker,
.eyebrow,
.nav-label,
.source-label {
  margin: 0;
  color: var(--faint);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.brand h1 {
  margin: 2px 0 0;
  font-size: 18px;
  line-height: 1.2;
}

.nav-groups {
  display: grid;
  gap: 20px;
}

.nav-groups section {
  display: grid;
  gap: 4px;
}

.nav-label {
  padding: 0 10px 5px;
  color: #9ba8b8;
}

.nav-item {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 34px;
  padding: 7px 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #dbe4ee;
  text-align: left;
}

.nav-item:hover,
.nav-item.active {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.nav-icon {
  color: #9fb0c4;
  font-weight: 800;
}

.count {
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #cdd8e4;
  font-size: 12px;
}

.source-card {
  display: grid;
  gap: 5px;
  margin-top: auto;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.source-card span {
  color: #aab7c7;
  font-size: 12px;
}

.settings-button {
  min-height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  color: #f8fbff;
}

.feed-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
}

.feed-header h2 {
  margin: 2px 0 0;
  font-size: 22px;
}

.feed-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-actions button,
.post-action {
  min-height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
}

.collection-status {
  display: grid;
  gap: 1px;
  min-width: 116px;
  color: var(--faint);
  font-size: 11px;
  text-align: right;
}

.collection-status strong {
  color: var(--muted);
  font-size: 12px;
}

.collection-status.collecting span,
.collection-status.collecting strong {
  color: var(--active);
}

.collect-button {
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid #245fcf;
  border-radius: 7px;
  background: var(--active);
  color: white;
  font-weight: 800;
}

.collect-button:disabled {
  cursor: wait;
  border-color: var(--line-strong);
  background: #d8e0eb;
  color: #5c6978;
}

.prompt-strip {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 10px;
  margin: 14px 20px 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-alt);
}

.prompt-strip span {
  color: var(--active);
  font-size: 12px;
  font-weight: 800;
}

.prompt-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.date-divider {
  margin: 8px 24px 0;
  color: var(--faint);
  font-size: 12px;
  font-weight: 700;
}

.post-list {
  flex: 1;
  margin: 0;
  padding: 8px 0 28px;
  overflow: auto;
  list-style: none;
}

.empty-state {
  margin: 28px 24px;
  padding: 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  color: var(--muted);
  background: var(--panel-alt);
  text-align: center;
}

.post-item {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 14px 24px 14px 20px;
  border-left: 4px solid transparent;
}

.post-item:hover,
.post-item.selected {
  background: #f8fbff;
}

.post-item.selected {
  border-left-color: var(--active);
}

.avatar {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #e9edf2;
  color: #354052;
  font-size: 13px;
  font-weight: 800;
}

.post-main {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.post-author {
  font-weight: 800;
}

.post-handle,
.post-time {
  color: var(--faint);
  font-size: 13px;
}

.fit-pill {
  margin-left: auto;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--active-soft);
  color: var(--active);
  font-size: 12px;
  font-weight: 800;
}

.post-text {
  margin: 0;
  color: #263240;
  font-size: 15px;
  line-height: 1.55;
}

.post-reason {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 3px 7px;
  border-radius: 999px;
  background: #eef2f6;
  color: #526070;
  font-size: 12px;
  font-weight: 700;
}

.post-actions {
  display: flex;
  gap: 6px;
  opacity: 0;
  transform: translateY(-2px);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.post-item:hover .post-actions,
.post-actions:focus-within {
  opacity: 1;
  transform: translateY(0);
}

.post-action {
  padding: 0 9px;
  font-size: 12px;
  font-weight: 700;
}

.post-action.later {
  background: var(--amber-soft);
  border-color: #efd99c;
  color: var(--amber);
}

.post-action.valuable {
  background: var(--green-soft);
  border-color: #bfe4d0;
  color: var(--green);
}

.post-action.skip {
  background: var(--red-soft);
  border-color: #f1c2bd;
  color: var(--red);
}

.detail-pane {
  padding: 20px;
  overflow: auto;
  background: #f9fafb;
}

.detail-empty,
.detail-card {
  min-height: calc(100vh - 40px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.detail-empty {
  display: grid;
  place-items: center;
  padding: 30px;
  color: var(--muted);
  text-align: center;
}

.detail-card {
  padding: 20px;
}

.detail-card header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.detail-card h2 {
  margin: 3px 0 0;
  font-size: 20px;
  line-height: 1.25;
}

.detail-card a {
  flex: 0 0 auto;
  color: var(--active);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.detail-text {
  margin: 18px 0;
  color: #263240;
  font-size: 15px;
  line-height: 1.62;
}

.detail-section {
  display: grid;
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.detail-section h3 {
  margin: 0;
  color: #3c4653;
  font-size: 13px;
}

.detail-section p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px;
  color: var(--ink);
  background: var(--panel-alt);
  line-height: 1.5;
}

textarea:focus {
  outline: 2px solid rgba(47, 111, 237, 0.2);
  border-color: var(--active);
}

.detail-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding-top: 12px;
}

.detail-actions button {
  min-height: 38px;
  font-weight: 800;
}

.detail-actions .primary {
  border-color: var(--green);
  background: var(--green);
  color: white;
}

.detail-actions .soft {
  background: var(--amber-soft);
  border-color: #efd99c;
  color: var(--amber);
}

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 220px minmax(380px, 1fr) 330px;
  }

  .prompt-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 74px minmax(300px, 1fr) 280px;
  }

  .sidebar {
    padding: 16px 10px;
  }

  .brand {
    justify-content: center;
    padding: 0;
  }

  .brand > div:not(.brand-mark),
  .nav-label,
  .nav-item span:not(.nav-icon),
  .source-card,
  .settings-button {
    display: none;
  }

  .nav-item {
    display: grid;
    grid-template-columns: 1fr;
    place-items: center;
  }

  .feed-header,
  .post-item {
    padding-right: 16px;
    padding-left: 16px;
  }

  .feed-tools {
    display: none;
  }

  .detail-pane {
    padding: 12px;
  }

  .detail-card {
    padding: 14px;
  }

  .detail-empty,
  .detail-card {
    min-height: calc(100vh - 24px);
  }
}