/* Modern Executive Consultancy & File Librarian Theme */
:root {
  --bg-primary: #0b1329;
  --bg-surface: #111e38;
  --bg-surface-elevated: #162646;
  --bg-input: #1a2c50;
  --border-color: #243b66;
  --border-hover: #3b5a96;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #38bdf8;
  --accent-navy: #0284c7;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.5);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

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

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

/* Header & Nav */
header.app-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 34px;
  height: 34px;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.brand-badge {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  border: 1px solid rgba(56, 189, 248, 0.3);
  text-transform: uppercase;
}

nav.main-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
  background-color: var(--bg-surface-elevated);
}

.nav-link.active {
  color: var(--accent-blue);
  border-bottom: 2px solid var(--accent-blue);
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-surface-elevated);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  font-size: 0.825rem;
}

.role-pill {
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.role-partner { background: rgba(168, 85, 247, 0.2); color: var(--accent-purple); border: 1px solid rgba(168, 85, 247, 0.4); }
.role-engagement_lead { background: rgba(56, 189, 248, 0.2); color: var(--accent-blue); border: 1px solid rgba(56, 189, 248, 0.4); }
.role-associate { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.4); }
.role-finance { background: rgba(245, 158, 11, 0.2); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.4); }

/* Layout */
.app-container {
  flex: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem;
  width: 100%;
}

.grid-workspace {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
}

/* Cards & Panels */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #ffffff;
}

/* Prompt Input & Answer Area */
.prompt-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.prompt-textarea {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  color: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
  min-height: 110px;
  outline: none;
  transition: border-color 0.15s ease;
}

.prompt-textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.prompt-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-navy), var(--accent-blue));
  color: #ffffff;
  border: none;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: opacity 0.15s ease;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}

/* Quick prompt pills */
.quick-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.quick-pill {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
}

.quick-pill:hover {
  border-color: var(--accent-blue);
  color: #ffffff;
  background: rgba(56, 189, 248, 0.1);
}

/* Response Container */
.response-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
  box-shadow: var(--shadow-md);
}

.response-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.response-body {
  font-size: 0.95rem;
  line-height: 1.6;
  white-space: pre-wrap;
}

.guardrail-alert {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

/* File Librarian Table & Tree */
.librarian-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
}

.tree-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  max-height: 700px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.tree-node {
  padding: 0.25rem 0;
}

.tree-folder {
  color: var(--accent-blue);
  font-weight: 600;
  cursor: pointer;
}

.tree-file {
  color: var(--text-secondary);
  padding-left: 1rem;
}

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

.file-table th {
  background: var(--bg-surface-elevated);
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 2px solid var(--border-color);
  color: var(--text-secondary);
  font-weight: 600;
}

.file-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.badge {
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}

.badge-confidential { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-restricted { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-internal { background: rgba(56, 189, 248, 0.15); color: var(--accent-blue); border: 1px solid rgba(56, 189, 248, 0.3); }
.badge-public { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.3); }

.tag-pill {
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
  margin-right: 0.3rem;
}

/* Stats Ribbon */
.stats-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}