:root {
  --bg: #05060a;
  --bg-alt: #0b0d14;
  --card-bg: #10131d;
  --accent: #4fd1c5;
  --accent-soft: rgba(79, 209, 197, 0.15);
  --text: #f7fafc;
  --text-muted: #a0aec0;
  --border: #2d3748;
  --danger: #f56565;
  --ok: #48bb78;
  --warn: #ecc94b;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at top, #111827 0, #05060a 55%);
  color: var(--text);
  font-family: var(--font-main);
}

/* Layout */

.gb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(to right, #05060a, #0b1120);
  position: sticky;
  top: 0;
  z-index: 10;
}

.gb-header-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.gb-logo {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gb-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.gb-header-right {
  display: flex;
  align-items: center;
}

.gb-main {
  max-width: 1100px;
  margin: 24px auto 40px;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.gb-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gb-section h2 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.gb-card {
  background: radial-gradient(circle at top left, #1a202c 0, #05060a 70%);
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 16px 18px;
}

.gb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.gb-footer {
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  background: #05060a;
}

/* GitHub link */

.gb-github-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
}

.gb-github-link:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft);
}

.gb-github-link svg {
  width: 16px;
  height: 16px;
}

/* Project cards */

.gb-project-card {
  background: radial-gradient(circle at top left, #111827 0, #05060a 70%);
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 14px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gb-project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gb-project-name {
  font-weight: 500;
}

.gb-project-tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.gb-project-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.gb-project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.gb-project-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.gb-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
}

.gb-dot.ok {
  background: var(--ok);
}

.gb-dot.warn {
  background: var(--warn);
}

.gb-dot.wip {
  background: var(--accent);
}

/* System status */

.gb-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.gb-status-item {
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border);
  font-size: 0.8rem;
}

.gb-status-label {
  color: var(--text-muted);
  margin-bottom: 4px;
}

.gb-status-value {
  font-weight: 500;
}

/* Architecture map */

.gb-architecture-card {
  font-size: 0.85rem;
}

.gb-arch-row {
  display: flex;
  gap: 10px;
  margin-bottom: 8px;
}

.gb-arch-column {
  flex: 1;
}

.gb-arch-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.gb-arch-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.gb-arch-list li {
  padding: 4px 0;
}

/* Cloud architecture */

.gb-cloud-card {
  font-size: 0.85rem;
}

.gb-cloud-diagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

.gb-cloud-layer {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gb-cloud-layer-label {
  font-weight: 500;
}

.gb-cloud-layer-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.gb-cloud-arrow {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Responsive */

@media (max-width: 640px) {
  .gb-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .gb-footer {
    flex-direction: column;
    gap: 4px;
  }
}