/* GreyWall AI Governance — Design System */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1422;
  --bg-card: #131827;
  --bg-card-hover: #181e30;
  --bg-input: #0f1422;
  --border-color: #1e2740;
  --border-light: #2a3558;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #06b6d4;
  --accent-hover: #22d3ee;
  --accent-dim: rgba(6, 182, 212, 0.1);
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;
  --info: #3b82f6;
  --purple: #8b5cf6;
  --orange: #f97316;
  --sidebar-width: 260px;
  --header-height: 64px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html { font-size: 15px; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

/* Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-logo svg { flex-shrink: 0; }

.sidebar-logo-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.sidebar-logo-text small {
  display: block;
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.sidebar-nav {
  padding: 0.75rem 0;
  flex: 1;
}

.nav-section {
  padding: 0.5rem 1.5rem 0.25rem;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-left-color: var(--accent);
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-item:hover svg,
.nav-item.active svg {
  opacity: 1;
}

/* Main content */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Topbar */
.topbar {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-search {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.45rem 1rem 0.45rem 2.25rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  width: 280px;
  outline: none;
  transition: border-color 0.2s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 0.6rem center;
}

.topbar-search:focus {
  border-color: var(--accent);
}

.topbar-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.topbar-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-switch {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  transition: all 0.2s;
}
.lang-switch:hover { border-color: var(--accent); color: var(--accent); }

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s;
}
.user-profile:hover { background: var(--bg-card); }

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
}

/* Page content */
.page-content {
  padding: 2rem;
  flex: 1;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--border-light); }

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

.card-title {
  font-size: 1rem;
  font-weight: 600;
}

/* Grid */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.dashboard-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all 0.2s;
}
.dashboard-stat:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.05);
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.25rem;
}

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

.stat-change {
  font-size: 0.75rem;
  margin-top: 0.5rem;
}

/* Tables */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

tr:hover td { background: var(--bg-card-hover); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
  line-height: 1.4;
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border-color: var(--border-color);
}
.btn-secondary:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-light); }

.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #000; }
.btn-info { background: var(--info); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-card); }

.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.78rem; }
.btn-lg { padding: 0.7rem 1.8rem; font-size: 1rem; }

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.6rem 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: var(--font);
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
}

.form-textarea { min-height: 100px; resize: vertical; }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2.5rem;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

.form-error {
  color: var(--danger);
  font-size: 0.78rem;
  margin-top: 0.25rem;
}

.form-hint {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 0.25rem;
}

/* Alert */
.alert {
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.alert-success { background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.3); color: var(--success); }
.alert-error { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.3); color: var(--danger); }
.alert-warning { background: rgba(234, 179, 8, 0.1); border: 1px solid rgba(234, 179, 8, 0.3); color: var(--warning); }
.alert-info { background: rgba(59, 130, 246, 0.1); border: 1px solid rgba(59, 130, 246, 0.3); color: var(--info); }

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.5rem; }
.modal-actions { display: flex; gap: 0.75rem; justify-content: flex-end; margin-top: 1.5rem; }

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}
.tab {
  padding: 0.6rem 1.2rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}
.tab:hover { color: var(--text-secondary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
}
.empty-state svg { width: 48px; height: 48px; color: var(--text-muted); margin-bottom: 1rem; }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.empty-state p { color: var(--text-muted); font-size: 0.88rem; max-width: 400px; margin: 0 auto; }

/* Loading */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* Score circle */
.score-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
}
.score-circle svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.score-circle svg circle {
  fill: none;
  stroke-width: 4;
  cx: 40; cy: 40; r: 36;
}

/* Public pages */
.public-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.public-header {
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.public-header-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.public-header-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.public-header-nav a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
}
.public-header-nav a:hover { color: var(--accent); }

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 2rem;
}

/* Tooltip */
[data-tooltip] {
  position: relative;
}
[data-tooltip]:after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
[data-tooltip]:hover:after { opacity: 1; }

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .topbar-search { width: 180px; }
  .page-content { padding: 1rem; }
}