/* Orbitwire — dark, quiet, futuristic */

:root {
  --bg: #07090d;
  --bg-elevated: rgba(255, 255, 255, 0.03);
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.05);
  --text: #e8ecf2;
  --text-soft: #a8b0c0;
  --muted: #6b7385;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --accent: #22d3ee;
  --accent-soft: rgba(34, 211, 238, 0.12);
  --accent-glow: rgba(34, 211, 238, 0.25);
  --accent-violet: #a78bfa;
  --radius: 12px;
  --radius-pill: 999px;
  --font-sans: "DM Sans", "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;
  --max: 680px;
  --shadow-card: 0 0 0 1px var(--border), 0 8px 32px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Soft ambient glow — no grid */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 45% at 50% -15%, rgba(34, 211, 238, 0.07), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 60%, rgba(167, 139, 250, 0.04), transparent 50%),
    radial-gradient(ellipse 40% 30% at 0% 80%, rgba(34, 211, 238, 0.03), transparent 45%);
}

.site-wrap {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

/* ——— Header ——— */
.site-header {
  padding: 1.5rem 0 1.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.brand-text h1 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.15;
  text-transform: none;
}

.brand-text .tagline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 400;
  margin-top: 0.2rem;
  opacity: 0.9;
}

.about-blurb {
  font-size: 0.875rem;
  color: var(--text-soft);
  max-width: 38em;
  line-height: 1.55;
  margin-top: 0.75rem;
  padding-left: 0;
  border-left: none;
}

/* ——— Filters ——— */
.feed-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.feed-toolbar .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.35rem;
}

.filter-btn {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-transform: none;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-soft);
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: var(--border-strong);
}

.filter-btn.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.45);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Unified active style — drop per-category solid fills */
.filter-btn[data-cat="AI"].active,
.filter-btn[data-cat="Space"].active,
.filter-btn[data-cat="Autonomy"].active,
.filter-btn[data-cat="Robots"].active,
.filter-btn[data-cat="Emerging"].active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.45);
}

/* ——— Feed ——— */
.feed {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem 1.15rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  animation: cardIn 0.4s ease both;
  transition: background 0.2s, border-color 0.2s;
}

.post-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
}

/* Thin cyan accent bar — quiet glow */
.post-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  opacity: 0.7;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.7rem;
  flex-wrap: wrap;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-pill);
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.timestamp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.post-card h2 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 0.55rem;
}

.post-card .body {
  font-size: 0.925rem;
  color: var(--text-soft);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.sources {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.sources-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.1rem;
}

.source-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.source-link:hover {
  color: var(--accent);
  border-bottom-color: rgba(34, 211, 238, 0.4);
}

.source-link::after {
  content: " ↗";
  font-size: 0.7em;
  opacity: 0.5;
}

/* Category accents — subtle violet tint sparingly on secondary cats */
.cat-AI { --accent: #22d3ee; }
.cat-Space { --accent: #67e8f9; }
.cat-Autonomy { --accent: #22d3ee; }
.cat-Robots { --accent: #a78bfa; }
.cat-Emerging { --accent: #67e8f9; }

.cat-AI .chip,
.cat-Space .chip,
.cat-Autonomy .chip,
.cat-Robots .chip,
.cat-Emerging .chip {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-color: color-mix(in srgb, var(--accent) 28%, transparent);
}

.cat-AI::before,
.cat-Space::before,
.cat-Autonomy::before,
.cat-Robots::before,
.cat-Emerging::before {
  background: var(--accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 40%, transparent);
}

/* ——— Load more / sentinel ——— */
.feed-status {
  text-align: center;
  padding: 2rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.feed-status .orbit-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  margin-bottom: 0.6rem;
  border: 1.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  box-shadow: 0 0 8px var(--accent-glow);
}

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

.feed-end {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem 0 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feed-end .orbit-icon {
  width: 18px;
  height: 18px;
  opacity: 0.45;
  color: var(--accent);
}

/* ——— Footer ——— */
.site-footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.site-footer .footer-brand {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--text-soft);
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 520px) {
  .site-wrap {
    padding: 0 1rem 3rem;
  }

  .site-header {
    padding: 1.25rem 0 1rem;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
  }

  .brand-text h1 {
    font-size: 1.2rem;
  }

  .post-card {
    padding: 1.15rem 1.15rem 1rem;
  }

  .post-card h2 {
    font-size: 1.02rem;
  }

  .filter-btn {
    padding: 0.3rem 0.7rem;
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


/* --- live poll UI --- */
.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-left: 0.45rem;
  vertical-align: middle;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: var(--radius-pill);
  padding: 0.1rem 0.45rem 0.1rem 0.35rem;
  opacity: 0.9;
}

.live-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
  animation: livePulse 1.6s ease-in-out infinite;
}

.live-pill.is-paused {
  opacity: 0.4;
}

.live-pill.is-paused::before {
  animation: none;
  opacity: 0.45;
}

@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.post-card.is-new {
  animation: newCardIn 0.55s ease both;
}

@keyframes newCardIn {
  from {
    opacity: 0;
    transform: translateY(-14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}



/* ——— Retention UX ——— */

.new-since {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.22);
  border-radius: var(--radius-pill);
  display: inline-block;
  padding: 0.28rem 0.75rem;
}

.session-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
  align-items: center;
}

.session-bar .label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.35rem;
}

.session-goals {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.session-goal-btn {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.session-goal-btn:hover {
  color: var(--text-soft);
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.04);
}

.session-goal-btn.active {
  color: var(--accent-violet);
  border-color: rgba(167, 139, 250, 0.4);
  background: rgba(167, 139, 250, 0.1);
}

.caught-up-card {
  border: 1px dashed rgba(34, 211, 238, 0.28);
  border-radius: var(--radius);
  background: rgba(34, 211, 238, 0.04);
  padding: 1.75rem 1.4rem;
  text-align: center;
  animation: cardIn 0.4s ease both;
}

.caught-up-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
}

.caught-up-card .orbit-icon {
  width: 22px;
  height: 22px;
  color: var(--accent);
  opacity: 0.7;
  margin-bottom: 0.25rem;
}

.caught-up-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
}

.caught-up-copy {
  font-size: 0.85rem;
  color: var(--text-soft);
  max-width: 28em;
  line-height: 1.5;
  margin-bottom: 0.35rem;
}

.show-older-btn,
.load-more-btn {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 1.15rem;
  margin-top: 0.35rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(34, 211, 238, 0.4);
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
}

.show-older-btn:hover,
.load-more-btn:hover {
  background: rgba(34, 211, 238, 0.18);
  box-shadow: 0 0 14px var(--accent-glow);
}

.load-more-hint {
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: none;
  color: var(--muted);
}

.toast {
  position: fixed;
  z-index: 40;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%) translateY(12px);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  max-width: min(92vw, 420px);
  padding: 0.85rem 1rem;
  background: rgba(12, 16, 24, 0.92);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(34, 211, 238, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.toast-msg {
  font-size: 0.875rem;
  color: var(--text-soft);
  line-height: 1.4;
}

.toast-dismiss {
  flex-shrink: 0;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.toast-dismiss:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.08);
}

.post-card--live {
  /* inherits is-new animation */
}