:root {
  --hv-sidebar-width: 240px;
  --hv-brand: #2c5f6f;
  --hv-brand-dark: #1e4652;
  --hv-bg: #f4f6f7;
  --hv-border: #e3e7e9;
}

body {
  background: var(--hv-bg);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- Login ---------- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--hv-bg);
}
.login-card {
  background: #fff;
  padding: 2.5rem;
  border-radius: 10px;
  border: 1px solid var(--hv-border);
  width: 100%;
  max-width: 380px;
}

/* ---------- App-Shell ---------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: var(--hv-sidebar-width);
  background: var(--hv-brand-dark);
  color: #fff;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.app-sidebar-brand {
  padding: 1.25rem 1.25rem;
  font-weight: 600;
  font-size: 1.1rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.app-nav {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 0;
}

.app-nav-link {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  border-left: 3px solid transparent;
}

.app-nav-link:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

.app-nav-link.active {
  background: rgba(255,255,255,.1);
  border-left-color: #fff;
  color: #fff;
  font-weight: 500;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-topbar {
  background: #fff;
  border-bottom: 1px solid var(--hv-border);
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-topbar-title {
  font-size: 1.15rem;
  font-weight: 500;
}

.app-topbar-user {
  font-size: 0.9rem;
  display: flex;
  align-items: center;
}

.app-content {
  padding: 1.75rem;
  flex: 1;
}

.hv-card {
  background: #fff;
  border: 1px solid var(--hv-border);
  border-radius: 10px;
  padding: 1.5rem;
}

.btn-primary {
  background: var(--hv-brand);
  border-color: var(--hv-brand);
}
.btn-primary:hover {
  background: var(--hv-brand-dark);
  border-color: var(--hv-brand-dark);
}