:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #12161f;
  --bg-surface: #181d28;
  --bg-elevated: #222938;
  --border-subtle: rgba(212, 175, 55, 0.12);
  --border-accent: rgba(212, 175, 55, 0.35);
  --gold-primary: #d4af37;
  --gold-light: #f3e5ab;
  --gold-muted: #9e8336;
  --text-main: #f0f2f5;
  --text-muted: #8c96a5;
  --text-dim: #5a6475;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* Header & Nav */
header.portal-nav {
  height: 64px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo {
  height: 32px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

.brand-title {
  display: none;
}

.brand-subtitle {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-left: 1px solid var(--border-subtle);
  padding-left: 0.75rem;
  line-height: 1.2;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.user-badge {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}

.user-role {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--gold-primary);
  color: #000;
  border-color: var(--gold-light);
}

.btn-primary:hover {
  background-color: var(--gold-light);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-elevated);
  border-color: var(--border-accent);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.25);
}

/* Layout Containers */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Workspace Grid (Thin-client 3-pane UI) */
.workspace-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 450px;
  height: calc(100vh - 64px);
  overflow: hidden;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-subtle);
  background-color: var(--bg-primary);
}

.chat-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

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

.chat-messages {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message-bubble {
  max-width: 85%;
  padding: 0.85rem 1.15rem;
  border-radius: 6px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.message-user {
  align-self: flex-end;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.message-agent {
  align-self: flex-start;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  color: var(--text-main);
}

.message-agent pre {
  background-color: #050608;
  padding: 0.75rem;
  border-radius: 4px;
  margin: 0.75rem 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.chat-input-bar {
  padding: 1rem 1.5rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 0.75rem;
}

.chat-textarea {
  flex: 1;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-main);
  padding: 0.6rem 0.85rem;
  font-family: inherit;
  font-size: 0.9rem;
  resize: none;
  min-height: 48px;
}

.chat-textarea:focus {
  outline: none;
  border-color: var(--gold-primary);
}

/* Right Side Pane (Tabs: Workspace NVMe / OneDrive) */
.side-panel {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-secondary);
  overflow: hidden;
}

.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
}

.tab-btn {
  flex: 1;
  padding: 0.75rem;
  text-align: center;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
}

.tab-btn.active {
  color: var(--gold-primary);
  border-bottom-color: var(--gold-primary);
  background-color: rgba(212, 175, 55, 0.05);
}

.tab-content {
  flex: 1;
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-radius: 4px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.file-item:hover {
  background-color: var(--bg-elevated);
  border-color: var(--border-accent);
}

.file-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.file-name {
  color: var(--text-main);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.file-actions {
  display: flex;
  gap: 0.35rem;
}

/* Modals & Previews */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-card {
  width: 80%;
  max-width: 900px;
  height: 80vh;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  background-color: #06080b;
}

/* Admin Dashboard Specific */
.admin-grid {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.admin-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1.5rem;
}

.admin-card-header {
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-card-title {
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold-primary);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th {
  text-align: left;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}

.data-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.45rem;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-approved { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-pending { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.badge-suspended { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); }
.badge-admin { background: rgba(212, 175, 55, 0.2); color: var(--gold-light); }
.badge-staff { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }