@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&display=swap");

:root {
  color-scheme: light;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #0b1b33;
  --muted: #516079;
  --text-muted: #516079;
  --border: #d8e0ee;
  --accent: #0f5eff;
  --accent-dark: #0a3fb8;
  --nav-bg: #f1f5fb;
  --nav-text: #0b1b33;
  --nav-muted: #5b6b84;
  --nav-active: #0f5eff;
  --nav-border: #d8e0ee;
  --nav-item-hover: rgba(15, 23, 42, 0.06);
  --nav-item-active: rgba(15, 94, 255, 0.12);
  --nav-item-active-border: rgba(15, 94, 255, 0.35);
  --bg-gradient-start: #eef2ff;
  --bg-gradient-end: #eef2ff;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #0f172a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --text-muted: #94a3b8;
  --border: #1f2a44;
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --nav-bg: #050b16;
  --nav-text: #e2e8f0;
  --nav-muted: #64748b;
  --nav-active: #3b82f6;
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-item-hover: rgba(148, 163, 184, 0.16);
  --nav-item-active: rgba(59, 130, 246, 0.22);
  --nav-item-active-border: rgba(59, 130, 246, 0.35);
  --bg-gradient-start: #0f172a;
  --bg-gradient-end: #0b1220;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(
    circle at top,
    var(--bg-gradient-start) 0%,
    var(--bg) 55%,
    var(--bg-gradient-end) 100%
  );
  color: var(--text);
}

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.shell-nav {
  background: var(--nav-bg);
  color: var(--nav-text);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-right: 1px solid var(--nav-border);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2563eb, #38bdf8);
}

.brand-title {
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--nav-muted);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-item {
  background: transparent;
  border: 1px solid transparent;
  color: inherit;
  padding: 10px 12px;
  text-align: left;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-item:hover {
  border-color: var(--nav-item-hover);
}

.nav-item.active {
  background: var(--nav-item-active);
  border-color: var(--nav-active);
  box-shadow: inset 0 0 0 1px var(--nav-item-active-border);
}

.nav-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--nav-muted);
}

.nav-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.nav-item.active .nav-icon {
  color: var(--nav-text);
}

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

.shell-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.topbar-title {
  display: grid;
  gap: 8px;
}

.topbar-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  position: relative;
}

.crumb-button {
  border: 1px solid var(--border);
  background: transparent;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text);
  padding: 0;
  line-height: 0;
}

.crumb-button svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  display: block;
}

.crumb-sep {
  color: var(--nav-muted);
}

.topbar-title h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-button {
  border: 1px solid var(--border);
  background: transparent;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: border-color 0.2s ease, background 0.2s ease;
  padding: 0;
  line-height: 0;
}

.icon-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  display: block;
}

.icon-button:hover {
  border-color: var(--accent);
  background: rgba(15, 94, 255, 0.08);
}

.status-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #f97316;
  border: 2px solid var(--panel);
}

.icon-group {
  position: relative;
}

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 14px;
}

.avatar-button {
  padding: 0;
}

.menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 220px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 18px 32px rgba(15, 23, 42, 0.15);
  display: grid;
  gap: 10px;
  z-index: 10;
}

.menu-panel.app-switcher {
  left: 0;
  right: auto;
}

.menu-panel h4 {
  margin: 0;
  font-size: 15px;
}

.menu-subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.menu-panel ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.menu-panel button {
  justify-self: start;
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.menu-panel button.ghost {
  background: transparent;
  color: var(--accent-dark);
}

.shell-content {
  padding: 0 32px 32px;
  display: grid;
  gap: 24px;
}

.primary,
.secondary {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  cursor: pointer;
  font-weight: 600;
}

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

.secondary {
  background: transparent;
  color: var(--accent-dark);
  border-color: var(--accent-dark);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.mfe-host {
  margin-top: 24px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 24px;
  min-height: 320px;
}

.mfe-placeholder {
  display: grid;
  gap: 8px;
  text-align: left;
  color: var(--text-muted);
}

.mfe-placeholder h3 {
  color: var(--text);
  margin: 0;
}

.mfe-placeholder p {
  margin: 0;
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .shell-nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .shell-topbar {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }
}