ruvnet--RuView/examples/frontend/src/styles/base.css

/**
 * HOMECORE base styles — typography reset, page shell, nav layout.
 * Component vocabulary mirrors cognitum-v0 (ADR-131 §3–4).
 */

@import './tokens.css';

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

html {
  color-scheme: dark;
  font-family: var(--hc-font-display);
  font-size: 16px;
  background: var(--hc-bg);
  color: var(--hc-text);
}

body { min-height: 100dvh; }

/* ── Typography scale ── */
h1 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.02em; }
h2 { font-size: 1.125rem; font-weight: 700; letter-spacing: -0.02em; }
h3 { font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.02em; }
h4 { font-size: 0.875rem; font-weight: 600; letter-spacing: -0.02em; }
p  { font-size: 0.875rem; line-height: 1.45; }

.mono { font-family: var(--hc-font-mono); }

/* ── Page shell ── */
.hc-wrap {
  max-width: 1400px;
  margin-inline: auto;
  padding-inline: 1.25rem;
  padding-block: 1.5rem;
}

/* ── Appbar ── */
.hc-appbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: hsl(220 25% 6% / 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hc-border);
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.25rem;
  height: 3.25rem;
}

.hc-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  white-space: nowrap;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--hc-text);
}

.hc-brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 0.4rem;
  background: var(--hc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hc-primary-fg);
}

.hc-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  scrollbar-width: none;
  mask-image: linear-gradient(to right, black calc(100% - 24px), transparent);
  flex: 1;
}

.hc-nav::-webkit-scrollbar { display: none; }

.hc-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.7rem;
  border-radius: var(--hc-radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--hc-text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 150ms, background 150ms;
}

.hc-nav-link:hover {
  color: var(--hc-text);
  background: hsl(220 20% 14%);
}

.hc-nav-link:focus-visible {
  outline: 2px solid hsl(185 80% 50% / 0.6);
  outline-offset: 1px;
}

.hc-nav-link:active { transform: translateY(1px); transition-duration: 50ms; }

.hc-nav-link.active {
  color: var(--hc-primary);
}

.hc-nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0.7rem;
  right: 0.7rem;
  height: 2px;
  background: var(--hc-primary);
  border-radius: 9999px;
}

/* ── Card ── */
.hc-card {
  background: var(--hc-gradient-card);
  border: 1px solid hsl(220 15% 18% / 0.5);
  border-radius: var(--hc-radius);
  box-shadow: var(--hc-shadow-card);
  padding: 1.25rem;
  transition: transform 200ms, border-color 200ms;
}

.hc-card:hover {
  transform: translateY(-2px);
  border-color: hsl(185 80% 50% / 0.4);
}

/* ── Badge ── */
.hc-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border-radius: var(--hc-radius-pill);
  border: 1px solid var(--hc-border);
  font-family: var(--hc-font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.hc-badge.online  { color: var(--hc-accent);      border-color: hsl(142 70% 50% / 0.4); }
.hc-badge.offline { color: var(--hc-destructive);  border-color: hsl(0 65% 50% / 0.4); }
.hc-badge.warning { color: var(--hc-warning);      border-color: hsl(38 80% 60% / 0.4); }

/* ── Button ── */
.hc-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--hc-radius-sm);
  font-family: var(--hc-font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--hc-border);
  background: hsl(220 20% 14%);
  color: var(--hc-text);
  cursor: pointer;
  transition: background 150ms, border-color 150ms;
}

.hc-btn:hover { background: hsl(220 20% 18%); }

.hc-btn.primary {
  background: var(--hc-primary);
  color: var(--hc-primary-fg);
  border-color: transparent;
  font-weight: 600;
  box-shadow: var(--hc-shadow-glow);
}

.hc-btn.primary:hover { background: hsl(185 80% 55%); }

/* ── Section ── */
.hc-section { margin-bottom: 1.5rem; }

.hc-section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hc-text-muted);
  margin-bottom: 0.75rem;
}

/* ── Grid helpers ── */
.hc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.75rem;
}

.hc-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.75rem;
}

/* ── Footer ── */
.hc-footer {
  border-top: 1px solid var(--hc-border);
  text-align: center;
  padding: 1rem 1.25rem;
  font-size: 0.75rem;
  color: var(--hc-text-muted);
  font-family: var(--hc-font-mono);
}