/* ── Reset & Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-card-hover: #222635;
  --border: #2a2e3b;
  --text: #e4e6ed;
  --text-muted: #8b8fa3;
  --accent: #6366f1;
  --green: #10b981;
  --red: #ef4444;
  --yellow: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Hub Layout ── */
.hub {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ── */
.header {
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  background: var(--bg-card);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

.logo h1 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-status {
  display: flex;
  gap: 8px;
}

.status-pill {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
}

.status-pill.muted {
  background: rgba(139, 143, 163, 0.12);
  color: var(--text-muted);
}

/* ── Main Grid ── */
.main {
  flex: 1;
  padding: 40px 32px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 24px;
}

/* ── Project Card ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: #3a3e4f;
  transform: translateY(-2px);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
}

/* Card Header */
.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

/* Status Indicator */
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
  position: relative;
}

.status-dot.online {
  background: var(--green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.status-dot.online::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--green);
  opacity: 0.3;
  animation: pulse 2s ease-in-out infinite;
}

.status-dot.offline {
  background: var(--red);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.4);
}

.status-dot.checking {
  background: var(--yellow);
  animation: blink 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.4); opacity: 0; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Description */
.card-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Tech Badges */
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech-badge {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent);
  border: 1px solid rgba(99, 102, 241, 0.15);
}

/* Actions */
.card-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
  padding-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--card-accent, var(--accent));
  color: white;
}

.btn-primary:hover {
  filter: brightness(1.15);
}

.btn-secondary {
  background: rgba(139, 143, 163, 0.1);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(139, 143, 163, 0.18);
  border-color: #3a3e4f;
}

/* Routes info */
.card-routes {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}

.card-routes code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--text);
  font-size: 0.76rem;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 20px 32px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .header { padding: 16px 20px; }
  .header-content { flex-direction: column; align-items: flex-start; }
  .main { padding: 24px 20px; }
  .project-grid { grid-template-columns: 1fr; }
}