/* discover.css - NeuralRun public Discover Feed.
   Voice and palette inherit from homepage v2. Vanilla CSS only. */

:root {
  --bg-deep: #050505;
  --surface: #121216;
  --surface-elev: #18181f;
  --accent-creation: #7a5cff;
  --accent-cyan: #00f3ff;
  --accent-success: #00ff41;
  --accent-warning: #ff9d00;
  --accent-error: #ff0055;
  --text-main: #e0e0e0;
  --text-dim: #858595;
  --text-muted: #5a5a68;
  --border-soft: rgba(255,255,255,0.06);
  --border-trust: rgba(0,255,65,0.25);
  --border-creation: rgba(122,92,255,0.18);
  --font-ui: 'Fira Code', monospace;
  --font-body: 'Roboto Mono', monospace;
  --container: 1180px;
  --radius: 6px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 50%, rgba(122,92,255,0.14), transparent 32%),
    radial-gradient(circle at 85% 20%, rgba(0,243,255,0.08), transparent 32%),
    linear-gradient(135deg, #050505 0%, #0a0a0e 100%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

.nr-skip {
  position: absolute;
  left: -10000px;
  top: 0;
  background: var(--accent-cyan);
  color: #000;
  padding: 0.5rem 1rem;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  z-index: 1000;
}
.nr-skip:focus { left: 1rem; top: 1rem; }

.nr-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}
@media (min-width: 768px) {
  .nr-container { padding: 0 2.5rem; }
}

.nr-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5,5,5,0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.nr-topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.nr-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.nr-brand img {
  display: block;
  height: 36px;
  width: auto;
  max-width: 100%;
}

.nr-nav { display: flex; align-items: center; gap: 1.5rem; }
.nr-nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.25rem;
}
.nr-nav-menu a {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  text-decoration: none;
  color: var(--text-dim);
  transition: color 0.15s;
}
.nr-nav-menu a:hover { color: var(--accent-cyan); }
.nr-nav-cta { display: flex; gap: 0.5rem; }
.nr-nav-toggle { display: none; }

@media (max-width: 880px) {
  .nr-nav-menu {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--surface);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-soft);
  }
  .nr-nav-menu.is-open { display: flex; }
  .nr-nav-toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 8px 10px;
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
    align-items: center;
  }
  .nr-nav-toggle span {
    display: block; width: 18px; height: 2px; background: var(--text-main);
  }
  .nr-nav-cta .nr-btn { padding: 10px 14px; }
}

.nr-discover-hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
}
.nr-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  margin: 0 0 0.75rem;
}
.nr-h1 {
  font-family: var(--font-ui);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
  margin: 0 0 1.25rem;
}
.nr-h1 span { color: var(--accent-creation); }
.nr-h2 {
  font-family: var(--font-ui);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin: 0;
}
.nr-lede {
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  color: var(--text-dim);
  max-width: 660px;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}
.nr-hero-credibility {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 0;
}
.nr-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
  box-shadow: 0 0 8px var(--accent-success);
}
.nr-dot-live { animation: nr-pulse 2.4s ease-in-out infinite; }
@keyframes nr-pulse {
  0%, 100% { box-shadow: 0 0 4px var(--accent-success); opacity: 0.9; }
  50% { box-shadow: 0 0 12px var(--accent-success); opacity: 1; }
}

.nr-feed {
  padding: 0 0 clamp(3rem, 7vw, 5rem);
}
.nr-feed-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1rem;
}
.nr-filter-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nr-filter {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 3px;
  min-height: 40px;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
}
.nr-filter:hover,
.nr-filter.is-active {
  color: var(--accent-cyan);
  border-color: rgba(0,243,255,0.45);
}
.nr-feed-note,
.nr-feed-status {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}
.nr-sprint-board {
  background: rgba(18,18,22,0.88);
  border: 1px solid rgba(0,243,255,0.18);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 0 0 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 360px) auto;
  gap: 1rem;
  align-items: center;
}
.nr-sprint-board h3 {
  font-family: var(--font-ui);
  font-size: 1rem;
  margin: 0;
}
.nr-sprint-status {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--text-dim);
}
.nr-sprint-list {
  display: grid;
  gap: 0.35rem;
}
.nr-sprint-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-main);
}
.nr-sprint-row span:nth-child(1) { color: var(--accent-cyan); }
.nr-sprint-row span:nth-child(2) {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nr-sprint-row span:nth-child(3) { color: var(--accent-success); }
.nr-challenge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}
.nr-challenge-card {
  background: var(--surface);
  border: 1px solid var(--border-creation);
  border-radius: var(--radius);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 250px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.nr-challenge-card:hover {
  transform: translateY(-3px);
  border-color: rgba(122,92,255,0.5);
  box-shadow: 0 12px 28px rgba(122,92,255,0.18);
}
.nr-card-kicker {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin: 0;
}
.nr-challenge-card h3 {
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.35;
  margin: 0;
  color: var(--text-main);
}
.nr-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
}
.nr-pill {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--text-dim);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  background: rgba(255,255,255,0.025);
}
.nr-card-plays {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--accent-success);
  margin: auto 0 0;
}
.nr-app-link {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-cyan);
  text-decoration: none;
  margin-top: 0.25rem;
}
.nr-app-link:hover { color: var(--accent-success); }

.nr-empty {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  max-width: 620px;
}
.nr-empty p {
  color: var(--text-dim);
  margin: 1rem 0 1.25rem;
}
.nr-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 22px;
  border-radius: 3px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  min-height: 44px;
}
.nr-btn-primary {
  background: linear-gradient(135deg, var(--accent-creation), #9d4eff);
  color: #fff;
}
.nr-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(122,92,255,0.4);
}

.nr-foot {
  padding: 2rem 0;
  border-top: 1px solid var(--border-soft);
}
.nr-foot-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.nr-foot p {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin: 0;
}
.nr-foot nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.nr-foot a {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
}
.nr-foot a:hover { color: var(--text-main); }

@media (max-width: 760px) {
  .nr-feed-head {
    align-items: start;
    flex-direction: column;
  }
  .nr-filter-group {
    justify-content: start;
  }
  .nr-sprint-board {
    grid-template-columns: 1fr;
    align-items: start;
  }
}