/**
 * Copilot Champion Hub
 * Microsoft Fluent UI v2 Design System (Dark & Light Mode)
 */

:root {
  --ms-font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
  
  /* Light Theme Tokens */
  --ms-bg-canvas: #f3f2f1;
  --ms-bg-card: #ffffff;
  --ms-bg-sidebar: #f8f9fa;
  --ms-bg-topbar: #ffffff;
  --ms-border: #edebe9;
  --ms-border-hover: #c8c6c4;
  --ms-text-primary: #242424;
  --ms-text-secondary: #616161;
  --ms-text-disabled: #a19f9d;

  /* Microsoft Brand Colors */
  --ms-primary: #0078d4;
  --ms-primary-hover: #106ebe;
  --ms-primary-light: #eff6fc;
  --ms-primary-dark: #005a9e;
  
  --ms-copilot-teal: #008272;
  --ms-copilot-purple: #8764b8;
  --ms-copilot-gradient: linear-gradient(135deg, #0078d4 0%, #8764b8 50%, #d83b01 100%);
  --ms-copilot-subtle-gradient: linear-gradient(135deg, rgba(0,120,212,0.08) 0%, rgba(135,100,184,0.08) 100%);
  
  --ms-success: #107c10;
  --ms-warning: #ffb900;
  --ms-danger: #d83b01;
  --ms-info: #0078d4;

  --ms-shadow-sm: 0 1.6px 3.6px 0 rgba(0,0,0,0.132), 0 0.3px 0.9px 0 rgba(0,0,0,0.108);
  --ms-shadow-md: 0 3.2px 7.2px 0 rgba(0,0,0,0.132), 0 0.6px 1.8px 0 rgba(0,0,0,0.108);
  --ms-shadow-lg: 0 6.4px 14.4px 0 rgba(0,0,0,0.132), 0 1.2px 3.6px 0 rgba(0,0,0,0.108);
  --ms-shadow-xl: 0 25.6px 57.6px 0 rgba(0,0,0,0.22), 0 4.8px 14.4px 0 rgba(0,0,0,0.18);
  
  --ms-radius-sm: 4px;
  --ms-radius-md: 8px;
  --ms-radius-lg: 12px;
  --ms-radius-xl: 16px;
}

[data-bs-theme="dark"] {
  --ms-bg-canvas: #111214;
  --ms-bg-card: #1f1f1f;
  --ms-bg-sidebar: #181818;
  --ms-bg-topbar: #1f1f1f;
  --ms-border: #2d2d2d;
  --ms-border-hover: #484644;
  --ms-text-primary: #f3f2f1;
  --ms-text-secondary: #a19f9d;
  --ms-text-disabled: #605e5c;

  --ms-primary: #2886de;
  --ms-primary-hover: #4f9cee;
  --ms-primary-light: #162638;
  --ms-copilot-subtle-gradient: linear-gradient(135deg, rgba(40,134,222,0.15) 0%, rgba(135,100,184,0.15) 100%);
  
  --ms-shadow-sm: 0 1.6px 3.6px 0 rgba(0,0,0,0.4);
  --ms-shadow-md: 0 3.2px 7.2px 0 rgba(0,0,0,0.5);
  --ms-shadow-lg: 0 6.4px 14.4px 0 rgba(0,0,0,0.6);
}

body {
  font-family: var(--ms-font-family);
  background-color: var(--ms-bg-canvas);
  color: var(--ms-text-primary);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* Card Styling */
.fluent-card {
  background-color: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-lg);
  box-shadow: var(--ms-shadow-sm);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.fluent-card:hover {
  border-color: var(--ms-border-hover);
  box-shadow: var(--ms-shadow-md);
}

.fluent-card-elevated {
  background-color: var(--ms-bg-card);
  border: 1px solid var(--ms-border);
  border-radius: var(--ms-radius-xl);
  box-shadow: var(--ms-shadow-lg);
}

/* Sidebar Navigation */
.fluent-sidebar {
  width: 260px;
  background-color: var(--ms-bg-sidebar);
  border-right: 1px solid var(--ms-border);
  min-height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1020;
  display: flex;
  flex-direction: column;
  transition: width 0.3s ease;
}

.fluent-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--ms-text-secondary);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  border-radius: var(--ms-radius-md);
  margin: 2px 10px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.fluent-nav-item:hover {
  background-color: rgba(0, 120, 212, 0.08);
  color: var(--ms-primary);
}

.fluent-nav-item.active {
  background-color: rgba(0, 120, 212, 0.12);
  color: var(--ms-primary);
  font-weight: 600;
  position: relative;
}

.fluent-nav-item.active::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background-color: var(--ms-primary);
  border-radius: 0 4px 4px 0;
}

.fluent-nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--ms-text-disabled);
  padding: 14px 20px 6px 20px;
}

/* Topbar */
.fluent-topbar {
  height: 64px;
  background-color: var(--ms-bg-topbar);
  border-bottom: 1px solid var(--ms-border);
  position: sticky;
  top: 0;
  z-index: 1010;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.fluent-main-content {
  margin-left: 260px;
  min-height: calc(100vh - 64px);
  padding: 24px;
}

@media (max-width: 992px) {
  .fluent-sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .fluent-sidebar.show {
    transform: translateX(0);
  }
  .fluent-main-content {
    margin-left: 0;
  }
}

/* Buttons */
.btn-fluent-primary {
  background-color: var(--ms-primary);
  color: #ffffff;
  border: 1px solid transparent;
  font-weight: 600;
  border-radius: var(--ms-radius-md);
  padding: 8px 18px;
  transition: all 0.15s ease;
}

.btn-fluent-primary:hover {
  background-color: var(--ms-primary-hover);
  color: #ffffff;
  box-shadow: var(--ms-shadow-sm);
}

.btn-fluent-gradient {
  background: var(--ms-copilot-gradient);
  color: #ffffff;
  border: none;
  font-weight: 600;
  border-radius: var(--ms-radius-md);
  padding: 8px 20px;
  box-shadow: 0 4px 12px rgba(135, 100, 184, 0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-fluent-gradient:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(135, 100, 184, 0.4);
  color: #ffffff;
}

/* Copilot Glow Banner */
.copilot-hero-banner {
  background: linear-gradient(135deg, rgba(0,120,212,0.1) 0%, rgba(135,100,184,0.12) 50%, rgba(216,59,1,0.08) 100%);
  border: 1px solid rgba(135, 100, 184, 0.25);
  border-radius: var(--ms-radius-xl);
  padding: 28px;
  position: relative;
  overflow: hidden;
}

/* Badges & Pills */
.badge-fluent {
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
}

.badge-copilot {
  background: var(--ms-copilot-gradient);
  color: #ffffff;
}

/* KPI Card */
.kpi-card {
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.kpi-icon-container {
  width: 48px;
  height: 48px;
  border-radius: var(--ms-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.kpi-value {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--ms-text-primary);
}

.kpi-label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--ms-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}