@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Premium Dynamic Color Palette */
  --brand: #6366f1; /* Indigo 500 */
  --brand-light: #818cf8;
  --brand-dark: #4338ca;
  --brand-subtle: #e0e7ff;
  --brand-gradient: linear-gradient(135deg, #6366f1, #8b5cf6); /* Indigo to Purple */
  
  --bg-color: #f4f7f6; /* Very soft cool gray */
  --surface: #ffffff;
  --text-main: #0f172a; /* Slate 900 */
  --text-muted: #64748b; /* Slate 500 */
  --border: #e2e8f0;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.3);
  
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

/* Navbar: Glassmorphism */
.navbar {
  background: rgba(255, 255, 255, 0.8) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.02);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--brand) !important;
  font-size: 1.4rem;
}

/* Sidebar styling */
.app-sidebar {
  background: transparent;
  min-height: calc(100vh - 65px);
  padding: 1.5rem 1rem;
}

.app-sidebar .nav-link {
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.15rem;
  margin-bottom: 8px;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid transparent;
}

.app-sidebar .nav-link:hover {
  background: rgba(255, 255, 255, 0.6);
  color: var(--brand);
  transform: translateX(5px);
  border-color: rgba(99, 102, 241, 0.1);
}

.app-sidebar .nav-link.active {
  background: var(--brand-gradient);
  color: white;
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

/* Cards & Surfaces */
.card {
  background: var(--surface);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}

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

.stat-card {
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.4);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(248,250,252,1) 100%);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 3px;
  background: var(--brand-gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.stat-card:hover::after {
  opacity: 1;
}

.stat-card .text-muted {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* Tables */
.table {
  vertical-align: middle;
}
.table thead th {
  background-color: var(--bg-color);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.table tbody tr {
  transition: var(--transition);
}
.table tbody tr:hover {
  background-color: #f8fafc;
}

/* Badges */
.badge-status {
  font-weight: 600;
  text-transform: capitalize;
  padding: 0.4em 0.8em;
  border-radius: 6px;
  font-size: 0.75rem;
}

.bg-success { background-color: #10b981 !important; }
.bg-warning { background-color: #f59e0b !important; color: white !important;}
.bg-info { background-color: #3b82f6 !important; }
.bg-danger { background-color: #ef4444 !important; }

/* Buttons with micro-interactions */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: var(--transition);
  letter-spacing: 0.02em;
  padding: 0.5rem 1.25rem;
}
.btn-primary {
  background: var(--brand-gradient);
  border: none;
  color: white;
  box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: white;
}
.btn-primary:hover::before {
  left: 100%;
}
.btn-primary:active {
  transform: translateY(1px);
}

/* Login Wrapper */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  position: relative;
}
.login-wrapper::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at top right, rgba(79, 70, 229, 0.1), transparent 40%),
              radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.1), transparent 40%);
  pointer-events: none;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  border-radius: 16px;
  z-index: 10;
}

/* Forms */
.form-control, .form-select {
  border-radius: 8px;
  border-color: var(--border);
  padding: 0.6rem 1rem;
  transition: var(--transition);
}
.form-control:focus, .form-select:focus {
  border-color: var(--brand-light);
  box-shadow: 0 0 0 4px var(--brand-subtle);
}
.form-label {
  font-weight: 500;
  color: var(--text-main);
  font-size: 0.9rem;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}