:root {
  --bg-color: #0f111a;
  --bg-surface: rgba(25, 28, 41, 0.6);
  --bg-surface-hover: rgba(40, 44, 60, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
  
  --primary: #7c3aed;
  --primary-hover: #8b5cf6;
  --secondary: #0ea5e9;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --font-family: 'Outfit', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  /* background aesthetic gradient */
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(124, 58, 237, 0.12), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(14, 165, 233, 0.12), transparent 25%);
  overflow-x: hidden;
}

.app-container {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: rgba(15, 17, 26, 0.8);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--glass-border);
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, #fff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  font-family: inherit;
  font-weight: 500;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-btn:hover {
  background: var(--bg-surface);
  color: var(--text-main);
}

.nav-btn.active {
  background: linear-gradient(90deg, rgba(124,58,237,0.15), transparent);
  color: var(--text-main);
  border-left: 4px solid var(--primary);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 2rem 3rem;
  overflow-y: auto;
}

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
}

.top-header h2 {
  font-size: 2rem;
  font-weight: 600;
}

.avatar {
  background: var(--bg-surface);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  font-weight: 500;
}

.view-section {
  animation: fadeIn 0.4s ease-out forwards;
}

.hidden {
  display: none !important;
}

/* Components */
.glass {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.card {
  padding: 1.5rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.metric-card {
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 58, 237, 0.3);
}

.metric-card h3 {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.metric-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.gap-sm { gap: 1rem; }

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.text-warning { color: var(--warning); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  color: var(--text-muted);
  font-weight: 500;
  padding: 1rem;
  border-bottom: 1px solid var(--glass-border);
}

td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

tbody tr {
  transition: var(--transition);
}

tbody tr:hover {
  background: var(--bg-surface-hover);
}

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-style: italic;
}

.badge {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}
.badge-in { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-out { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge-low { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge-pending { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge-approved { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-sent { background: rgba(124, 58, 237, 0.2); color: var(--primary); }

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

input, select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.2);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3); }

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.05);
}

.w-full { width: 100%; }

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.2s;
}

.modal {
  width: 100%;
  max-width: 500px;
  padding: 2rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Inline Edit specific class */
.inline-input {
  padding: 0.35rem 0.5rem;
  font-size: 0.9rem;
  width: 100%;
}

/* Background Highlight for danger rows */
.row-danger {
  background: rgba(239, 68, 68, 0.15) !important;
  border-left: 3px solid var(--danger);
}

/* Auth Specific CSS */
.login-wrapper {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  background: var(--bg-color);
  background-image: radial-gradient(circle at 50% 50%, rgba(124, 58, 237, 0.15), transparent 60%);
}
.login-box {
  width: 100%;
  max-width: 400px;
  padding: 3rem 2rem;
  text-align: left;
}
.justify-center { justify-content: center; }
.scale-110 { transform: scale(1.3); margin-right: 0.5rem; }
.mb-6 { margin-bottom: 1.5rem; }
.text-2xl { font-size: 1.75rem; }
.flex-center { display: flex; align-items: center; }
.shadow-lg { box-shadow: 0 10px 25px rgba(0,0,0,0.3); }