/* ============================================
   CraigClaw Layout — Shell, Topbar, Sidebar
   ============================================ */

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ---- App Shell ---- */
.app-shell {
  display: grid;
  grid-template-rows: var(--topbar-height) 1fr;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar main";
  height: 100vh;
  width: 100vw;
}

/* ---- Topbar ---- */
.topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--topbar-border);
  z-index: 100;
}

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

/* ---- Legacy Links ---- */
.legacy-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  padding-left: 12px;
  border-left: 1px solid var(--border);
}

.legacy-pill {
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-tertiary);
  text-decoration: none;
  padding: 3px 8px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.legacy-pill:hover {
  color: var(--text-secondary);
  border-color: var(--border);
  background: var(--bg-tertiary);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  text-decoration: none;
}

.topbar-brand svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
}

.menu-toggle svg { width: 22px; height: 22px; }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---- Space Toggle ---- */
.space-toggle {
  display: flex;
  align-items: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
}

.space-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.space-btn .space-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  transition: all var(--transition);
}

.space-btn[data-space="P"] .space-dot { background: var(--space-p-dim); }
.space-btn[data-space="W"] .space-dot { background: var(--space-w-dim); }

.space-btn.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.space-btn.active[data-space="P"] .space-dot { background: var(--space-p); }
.space-btn.active[data-space="W"] .space-dot { background: var(--space-w); }

/* ---- Theme Toggle ---- */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 5px 7px;
  display: flex;
  align-items: center;
  transition: all var(--transition);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.theme-toggle svg { width: 16px; height: 16px; }

/* ---- Sidebar ---- */
.sidebar {
  grid-area: sidebar;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  overflow-y: auto;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-section {
  margin-top: 16px;
}

.sidebar-section:first-child {
  margin-top: 0;
}

.sidebar-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding: 4px 12px 6px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar-item:hover {
  background: var(--sidebar-hover);
  color: var(--sidebar-text-active);
}

.sidebar-item.active {
  background: var(--sidebar-active);
  color: var(--sidebar-text-active);
}

.sidebar-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-item .badge {
  margin-left: auto;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--badge-bg);
  color: var(--badge-text);
  padding: 1px 6px;
  border-radius: 10px;
}

/* space indicator on sidebar */
.sidebar[data-space="P"] .sidebar-item.active {
  border-left: 2px solid var(--space-p);
  padding-left: 10px;
}

.sidebar[data-space="W"] .sidebar-item.active {
  border-left: 2px solid var(--space-w);
  padding-left: 10px;
}

/* ---- Main Content ---- */
.main-content {
  grid-area: main;
  overflow-y: auto;
  padding: 24px;
  background: var(--bg-primary);
}

.page {
  display: none;
  max-width: 1400px;
  width: 100%;
}

.page.active {
  display: block;
}

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---- Cards ---- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--border-light);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

/* ---- Stat Cards ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.stat-card .stat-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-card .stat-sub {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:hover { background: var(--bg-hover); }

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

.btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
}

.btn-primary:hover { background: var(--accent-hover); }

/* ---- Tables ---- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* ---- Status badges ---- */
.status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 10px;
}

.status-online { background: var(--success-dim); color: var(--success); }
.status-offline { background: var(--danger-dim); color: var(--danger); }
.status-warning { background: var(--warning-dim); color: var(--warning); }

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ---- Empty State ---- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
  text-align: center;
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 14px;
  max-width: 300px;
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }

  .sidebar {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 200ms ease;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 89;
  }

  .sidebar-overlay.active { display: block; }

  .menu-toggle { display: flex; }
  .legacy-links { display: none; }

  .main-content { padding: 16px; }

  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: 1fr; }

  .page-title { font-size: 18px; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .space-btn span.space-label { display: none; }
}