/* Custom styles for Invoice System */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --info-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Global Form Styling for Consistent Blue Borders */
.form-control, .form-select {
    border: 2px solid #007bff !important;
    border-radius: 8px !important;
}

.form-control:focus, .form-select:focus {
    border-color: #0056b3 !important;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25) !important;
}

.card {
    border: 2px solid #007bff !important;
    border-radius: 12px !important;
}

.card-header {
    background-color: #f8f9ff !important;
    border-bottom: 2px solid #007bff !important;
}

/* Additional form enhancements */
.form-label {
    font-weight: 600 !important;
    color: #495057 !important;
}

.btn-primary {
    background-color: #007bff !important;
    border-color: #007bff !important;
}

.btn-primary:hover {
    background-color: #0056b3 !important;
    border-color: #0056b3 !important;
}

.btn-outline-primary {
    color: #007bff !important;
    border-color: #007bff !important;
}

.btn-outline-primary:hover {
    background-color: #007bff !important;
    border-color: #007bff !important;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    line-height: 1.6;
}

/* Enhanced Navbar */
.navbar {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0 2px;
}

.nav-link:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
}

/* Enhanced Cards */
.dashboard-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    overflow: hidden;
}

.dashboard-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-medium);
}

.card-header {
    background: var(--primary-gradient);
    color: white;
    border-bottom: 1px solid var(--glass-border);
    border-radius: 20px 20px 0 0 !important;
    font-weight: 600;
    padding: 1.5rem;
}

/* Enhanced Buttons */
.btn {
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    padding: 0.75rem 1.5rem;
    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:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-primary {
    background: var(--primary-gradient);
}

.btn-success {
    background: var(--success-gradient);
}

.btn-warning {
    background: var(--warning-gradient);
}

.btn-info {
    background: var(--info-gradient);
}

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

/* Enhanced Tables */
.table {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.table thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1rem;
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.01);
}

.table td {
    padding: 1rem;
    border-color: var(--glass-border);
}

/* Enhanced Forms */
.form-control, .form-select {
    border-radius: 12px;
    border: 2px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: rgba(255, 255, 255, 0.98);
}

.form-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 0.5rem;
}

/* Enhanced Alerts */
.alert {
    border-radius: 15px;
    border: none;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-light);
}

.alert-success {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(76, 175, 80, 0.05) 100%);
    color: #2e7d32;
    border-left: 4px solid #4caf50;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.1) 0%, rgba(244, 67, 54, 0.05) 100%);
    color: #c62828;
    border-left: 4px solid #f44336;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1) 0%, rgba(255, 152, 0, 0.05) 100%);
    color: #ef6c00;
    border-left: 4px solid #ff9800;
}

.alert-info {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.1) 0%, rgba(33, 150, 243, 0.05) 100%);
    color: #1565c0;
    border-left: 4px solid #2196f3;
}

/* Enhanced Badges */
.badge {
    border-radius: 20px;
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--primary-gradient);
}

.badge-success {
    background: var(--success-gradient);
}

.badge-warning {
    background: var(--warning-gradient);
}

.badge-info {
    background: var(--info-gradient);
}

/* Enhanced Dropdown */
.dropdown-menu {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    box-shadow: var(--shadow-medium);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    transition: all 0.3s ease;
    font-weight: 500;
}

.dropdown-item:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateX(5px);
}

.dropdown-item i {
    width: 20px;
    text-align: center;
    margin-right: 0.5rem;
}

/* Invoice specific styles */
.invoice-header {
    background: var(--primary-gradient);
    color: white;
    padding: 2.5rem;
    border-radius: 20px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-medium);
    text-align: center;
}

.invoice-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.invoice-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.invoice-total {
    background: var(--success-gradient);
    color: white;
    border-radius: 15px;
    padding: 2rem;
    font-weight: 700;
    box-shadow: var(--shadow-medium);
}

/* Enhanced Modal */
.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
}

.modal-header {
    background: var(--primary-gradient);
    color: white;
    border-radius: 20px 20px 0 0;
    border-bottom: 1px solid var(--glass-border);
}

.modal-footer {
    border-top: 1px solid var(--glass-border);
    border-radius: 0 0 20px 20px;
}

/* Enhanced Pagination */
.pagination {
    gap: 0.25rem;
}

.page-link {
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: #667eea;
    font-weight: 600;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    border-color: transparent;
}

/* Enhanced Loading Spinner */
.spinner-border {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced Tooltips */
.tooltip {
    backdrop-filter: blur(10px);
}

.tooltip-inner {
    background: var(--dark-gradient);
    border-radius: 8px;
    font-weight: 500;
}

/* Enhanced Progress Bars */
.progress {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    height: 8px;
    overflow: hidden;
}

.progress-bar {
    background: var(--primary-gradient);
    border-radius: 10px;
}

/* Enhanced Breadcrumbs */
.breadcrumb {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-light);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: #667eea;
    font-weight: 600;
}

.breadcrumb-item.active {
    color: #667eea;
    font-weight: 600;
}

/* Enhanced Sidebar (if needed) */
.sidebar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--glass-border);
    box-shadow: var(--shadow-medium);
}

/* Enhanced Footer */
.footer {
    background: var(--dark-gradient);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .dashboard-card {
        margin-bottom: 1rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}

/* Print styles */
@media print {
    .navbar, .btn, .no-print {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
    
    body {
        background: white !important;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.bounce-in {
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

/* Glass Morphism Utilities */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-light);
}

/* Gradient Text Utilities */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-success {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-warning {
    background: var(--warning-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-info {
    background: var(--info-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Status Badge Styling */
.badge {
    font-weight: 600;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bg-success {
    background-color: #28a745 !important;
    color: white !important;
}

.bg-warning {
    background-color: #ffc107 !important;
    color: #212529 !important;
}

.bg-primary {
    background-color: #007bff !important;
    color: white !important;
}

.bg-danger {
    background-color: #dc3545 !important;
    color: white !important;
}

.bg-secondary {
    background-color: #6c757d !important;
    color: white !important;
}

.bg-dark {
    background-color: #343a40 !important;
    color: white !important;
}

/* Status-specific styling */
.status-partial {
    background-color: #ffc107 !important;
    color: #212529 !important;
}

.status-paid {
    background-color: #28a745 !important;
    color: white !important;
}

.status-sent {
    background-color: #007bff !important;
    color: white !important;
}

.status-draft {
    background-color: #6c757d !important;
    color: white !important;
}

.status-overdue {
    background-color: #dc3545 !important;
    color: white !important;
}

.status-cancelled {
    background-color: #343a40 !important;
    color: white !important;
}