/* Professional Attendance System Styles */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --success-color: #059669;
  --danger-color: #dc2626;
  --warning-color: #d97706;
  --info-color: #0891b2;
  --light-bg: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.container-narrow { 
  max-width: 1000px; 
}

/* Professional Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.card-body {
  padding: 2rem;
}

/* Status Indicators */
.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
  animation: pulse 2s infinite;
}

.dot-in { background: var(--success-color); }
.dot-out { background: var(--danger-color); }
.dot-pending { background: var(--warning-color); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Professional Buttons */
.btn {
  border-radius: 12px;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn::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:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), #047857);
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color), #b91c1c);
  color: white;
}

.btn-outline-primary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-1px);
}

/* Tables */
.table {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table thead th {
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  color: var(--text-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border: none;
  padding: 1rem;
}

.table tbody td {
  padding: 1rem;
  border-color: var(--border-color);
  vertical-align: middle;
}

.table tbody tr {
  transition: all 0.2s ease;
}

.table tbody tr:hover {
  background: #f8fafc;
  transform: scale(1.01);
}

/* Forms */
.form-control {
  border-radius: 12px;
  border: 2px solid var(--border-color);
  padding: 0.875rem 1rem;
  transition: all 0.3s ease;
  background: var(--card-bg);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: translateY(-1px);
}

.form-select {
  border-radius: 12px;
  border: 2px solid var(--border-color);
  padding: 0.875rem 1rem;
  background: var(--card-bg);
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

/* Dashboard Cards */
.dashboard-card {
  background: linear-gradient(135deg, var(--card-bg), #f8fafc);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--info-color));
}

.dashboard-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.dashboard-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--info-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Alerts */
.alert {
  border-radius: 12px;
  border: none;
  padding: 1rem 1.5rem;
  margin: 1rem 0;
}

.alert-success {
  background: linear-gradient(135deg, #d1fae5, #a7f3d0);
  color: #065f46;
}

.alert-danger {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #991b1b;
}

.alert-warning {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #92400e;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
  .card-body {
    padding: 1.5rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
  
  .dashboard-card {
    padding: 1.5rem;
  }
}

/* Utility Classes */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--info-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--info-color));
}

.shadow-custom {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}