:root {
  --paper: #E5E2D6;
  --paper-card: #EFEDE3;
  --ink: #201F1A;
  --ink-soft: #57554A;
  --wire-red: #A13A2C;
  --signal-blue: #2C5A63;
  --rule: #B7B3A3;

  --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  --font-sans: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
}

button, select, input {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--signal-blue);
  outline-offset: 2px;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  width: 300px;
  flex-shrink: 0;
  background: var(--paper-card);
  border-right: 1px solid var(--rule);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar__brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.sidebar__brand-mark {
  color: var(--wire-red);
  font-size: 18px;
}

.sidebar__brand-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
}

.sidebar__tagline {
  margin: -16px 0 0;
  font-size: 12px;
  color: var(--ink-soft);
  font-style: italic;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel--grow {
  flex: 1;
  min-height: 0;
}

.panel__heading {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}

/* ---------- Status board ---------- */

.status-board {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.status-board__empty {
  color: var(--ink-soft);
  font-style: italic;
}

.status-board__item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--ink-soft);
}

.status-dot--ok { background: var(--signal-blue); }
.status-dot--error { background: var(--wire-red); }

.status-board__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- Add source form ---------- */

.add-form {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.add-form__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 8px;
}

.add-form__input {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 8px;
  font-size: 13px;
  color: var(--ink);
}

.add-form__hint {
  font-size: 11px;
  color: var(--ink-soft);
  min-height: 14px;
  margin: 2px 0 0;
}

.add-form__submit {
  margin-top: 14px;
  background: var(--ink);
  color: var(--paper-card);
  border: none;
  border-radius: 3px;
  padding: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.add-form__submit:hover { background: var(--wire-red); }

.add-form__error {
  color: var(--wire-red);
  font-size: 12px;
  margin: 4px 0 0;
  min-height: 14px;
}

/* ---------- Channel list ---------- */

.channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.channel-list__empty {
  color: var(--ink-soft);
  font-style: italic;
  font-size: 13px;
}

.channel-list__item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 6px 8px;
  font-size: 12px;
}

.channel-list__name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.channel-list__platform {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.channel-list__remove {
  background: none;
  border: none;
  color: var(--wire-red);
  font-family: var(--font-mono);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 4px;
}

/* ---------- Main ---------- */

.main {
  flex: 1;
  padding: 24px 40px;
  min-width: 0;
}

.main__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.main__title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.main__title h1 {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.04em;
  margin: 0;
}

.live-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--wire-red);
  animation: pulse 1.6s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .live-dot { animation: none; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.main__controls {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
}

.main__refresh {
  background: none;
  border: 1px solid var(--ink);
  border-radius: 3px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--ink);
}

.main__refresh:hover {
  background: var(--ink);
  color: var(--paper-card);
}

/* ---------- Feed ---------- */

.feed {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 760px;
}

.feed__empty {
  color: var(--ink-soft);
  font-style: italic;
  padding: 20px 0;
}

.dispatch {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--signal-blue);
  border-radius: 3px;
  padding: 14px 16px;
}

.dispatch--x { border-left-color: var(--wire-red); }
.dispatch--youtube { border-left-color: #7A3E9D; }
.dispatch--reddit { border-left-color: #C1662F; }
.dispatch--mastodon { border-left-color: #4B6FA8; }

.dispatch__meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.dispatch__time {
  font-variant-numeric: tabular-nums;
}

.dispatch__author {
  font-weight: 600;
  color: var(--ink);
}

.dispatch__content {
  font-size: 14px;
  line-height: 1.5;
  margin: 0 0 8px;
}

.dispatch__link {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal-blue);
  text-decoration: none;
}

.dispatch__link:hover { text-decoration: underline; }

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .app { flex-direction: column; }
  .sidebar {
    width: auto;
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  .main { padding: 20px; }
}