:root {
    /* Color Scheme */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --success-color: #10b981;
    --dark-color: #1f2937;
    --light-color: #f3f4f6;
    --gray-color: #6b7280;
    --text-color: #374151;
    
    /* Extended Color Scheme */
    --primary-hover: #1d4ed8;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border radius */
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --border-radius-lg: 0.75rem;
    
    /* Extended Border Radius */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Box shadow */
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Extended Box Shadow */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Global styles */
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    background-color: var(--light-color);
}

/* Button styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--secondary-dark);
    border-color: var(--secondary-dark);
}

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

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

/* Card styles */
.card {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: none;
}

.card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0,0,0,.125);
    padding: 1rem 1.35rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h5, .card-header h6 {
    margin-bottom: 0;
}

/* Table styles */
.table-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

/* Form controls */
.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.25);
}

/* Navbar */
.navbar {
    box-shadow: var(--box-shadow);
}

/* Toast notifications */
.toast {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.toast-success {
    background-color: var(--success-color);
    color: white;
}

.toast-error {
    background-color: var(--danger-color);
    color: white;
}

.toast-warning {
    background-color: var(--warning-color);
    color: white;
}

.toast-info {
    background-color: var(--info-color);
    color: white;
}

/* Loading spinner */
.loader {
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 3px solid var(--primary-color);
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Sidebar styles */
.sidebar {
    background-color: white;
    border-right: 1px solid rgba(0, 0, 0, 0.125);
    height: 100%;
    width: 250px;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    overflow-x: hidden;
    box-shadow: var(--box-shadow);
}

.sidebar .nav-link {
    color: var(--text-color);
    padding: 0.75rem 1.25rem;
    border-radius: 0;
}

.sidebar .nav-link:hover {
    background-color: var(--light-color);
}

.sidebar .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.sidebar-icon {
    margin-right: 0.75rem;
    width: 1.25rem;
    text-align: center;
}

.content-wrapper {
    margin-left: 250px;
    padding: 1.5rem;
}

/* Mobile responsive sidebar */
@media (max-width: 768px) {
    .sidebar {
        width: 280px;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        z-index: 1050;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar .nav-link {
        text-align: left;
        padding: 0.75rem 1.25rem;
    }
    
    .sidebar-icon {
        margin-right: 0.75rem;
        width: 1.25rem;
        text-align: center;
    }
    
    .sidebar .nav-text {
        display: inline;
    }
    
    .content-wrapper {
        margin-left: 0;
        padding: 1rem;
    }
    
    /* Overlay for mobile sidebar */
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 1040;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    }
    
    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }
    
    /* Mobile navbar adjustments */
    .navbar {
        padding: 0.5rem 1rem;
    }
    
    .navbar .container-fluid {
        padding: 0;
    }
    
    /* Mobile content adjustments */
    .container-fluid {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    /* Mobile card adjustments */
    .card {
        margin-bottom: 1rem;
    }
    
    /* Mobile table adjustments */
    .table-responsive {
        font-size: 0.875rem;
    }
    
    /* Mobile form adjustments */
    .form-control, .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Tablet responsive sidebar */
@media (min-width: 769px) and (max-width: 992px) {
    .sidebar {
        width: 70px;
    }
    
    .sidebar .nav-link {
        text-align: center;
        padding: 0.75rem;
    }
    
    .sidebar-icon {
        margin-right: 0;
        font-size: 1.25rem;
    }
    
    .sidebar .nav-text {
        display: none;
    }
    
    .content-wrapper {
        margin-left: 70px;
    }
}

/* Badge styling */
.badge {
    font-weight: 600;
    padding: 0.35em 0.65em;
    border-radius: 10rem;
}

/* Login page styling */
.login-container {
    max-width: 450px;
    width: 100%;
    padding: 2rem;
    margin: 100px auto;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.login-card {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.login-header {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem;
    text-align: center;
}

.login-logo {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.login-body {
    padding: 2rem;
    background-color: white;
}

.register-container {
    max-width: 500px;
    margin: 50px auto;
    padding: 30px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* Avatar Elements */
.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-xs {
    width: 32px;
    height: 32px;
}

.avatar-sm {
    width: 40px;
    height: 40px;
}

.avatar-md {
    width: 48px;
    height: 48px;
}

.avatar-lg {
    width: 60px;
    height: 60px;
}

.avatar-xl {
    width: 80px;
    height: 80px;
}

/* Form elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-hint {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

/* Alert styles */
.alert {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    display: none;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

/* Tags and utility classes */
.tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    margin-right: 0.3rem;
    background-color: #f8f9fa;
    color: #6c757d;
    display: inline-block;
    margin-bottom: 0.3rem;
}

.tag-important {
    background-color: #ffeeba;
    color: #856404;
}

.tag-active {
    background-color: #c3e6cb;
    color: #155724;
}

.search-wrapper {
    position: relative;
}

.search-wrapper .form-control {
    padding-left: 2.5rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #adb5bd;
}

/* Status badge styling */
.status-badge {
    font-size: 12px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-paid {
    background-color: rgba(40, 167, 69, 0.1);
    color: #28a745;
}

.status-pending {
    background-color: rgba(255, 193, 7, 0.1);
    color: #ffc107;
}

.status-overdue {
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

/* Breadcrumb Styling */
.breadcrumb {
    background: white;
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb-item a:hover {
    color: var(--primary-hover);
}

/* Chat preview styles */
.chat-preview {
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.chat-message-preview {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-width: 100%;
    word-break: break-word;
    line-height: 1.4;
}

.chat-preview .flex-grow-1 {
    min-width: 0; /* This allows the flex item to shrink below its content size */
}

/* Ensure chat cards have consistent sizing */
.chat-preview .d-flex {
    align-items: flex-start;
}

.chat-preview .me-2 {
    flex-shrink: 0; /* Prevent icon from shrinking */
}

/* Dashboard message preview styles */
.dashboard-message-preview {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.4;
    color: var(--gray-600);
}

.message-item .flex-grow-1 {
    min-width: 0; /* This allows the flex item to shrink below its content size */
}

.message-item h6 {
    min-width: 0; /* Allow customer name to truncate */
}

.message-item .d-flex {
    align-items: center;
}