/* Collections Platform - Dark Mode CSS */
:root {
    --bg-primary: #121212;
    --bg-secondary: #1f1f1f;
    --bg-tertiary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent: #4a9eff;
    --accent-hover: #3a8eef;
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --border: #333333;
    --shadow: rgba(0, 0, 0, 0.3);
    --sidebar-width-expanded: 280px;
    --sidebar-width-collapsed: 70px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.container {
    margin-left: var(--sidebar-width-expanded);
    margin-right: 0;
    padding: 20px;
    padding-top: 80px; /* Add space for fixed header */
    transition: margin-left 300ms ease;
    width: calc(100vw - var(--sidebar-width-expanded));
    max-width: 100%;
    box-sizing: border-box;
}

body.sidebar-collapsed .container {
    margin-left: var(--sidebar-width-collapsed);
    width: calc(100vw - var(--sidebar-width-collapsed));
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
    position: fixed;
    top: 0;
    left: var(--sidebar-width-expanded);
    right: 0;
    width: calc(100vw - var(--sidebar-width-expanded));
    z-index: 1001;
    box-sizing: border-box;
    transition: left 300ms ease, width 300ms ease;
}

body.sidebar-collapsed .header {
    left: var(--sidebar-width-collapsed);
    width: calc(100vw - var(--sidebar-width-collapsed));
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0 20px;
    box-sizing: border-box;
}

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--accent);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.notification-bell {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.notification-bell:hover {
    background-color: var(--bg-tertiary);
}

.notification-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--error);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.notification-count-zero {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

/* Header Welcome Text */
.user-welcome-text {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Notification Bell Button */
.notification-bell-btn {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-bell-btn:hover {
    background-color: var(--bg-tertiary);
}

.notification-bell-btn i {
    width: 18px;
    height: 18px;
}

/* Notification Badge */
.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--error);
    color: white;
    border-radius: 50%;
    min-width: 16px;
    height: 16px;
    font-size: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    padding: 0 3px;
}

/* Login Form */
.login-form {
    max-width: 400px;
    margin: 5rem auto;
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px var(--shadow);
}

.login-form h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent);
}

.login-info {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.9rem;
}

.login-info p {
    margin-bottom: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group input[type="file"] {
    padding: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

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

.btn-success:hover {
    background-color: #45a049;
}

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

.btn-warning:hover {
    background-color: #e68900;
}

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

.btn-danger:hover {
    background-color: #d32f2f;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Tables */
.table-container {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px var(--shadow);
    width: 100%;
    max-width: 100%;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px var(--shadow);
    margin-bottom: 1.5rem;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border-left: 4px solid;
}

.alert-success {
    background-color: rgba(76, 175, 80, 0.1);
    border-left-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background-color: rgba(255, 152, 0, 0.1);
    border-left-color: var(--warning);
    color: var(--warning);
}

.alert-error {
    background-color: rgba(244, 67, 54, 0.1);
    border-left-color: var(--error);
    color: var(--error);
}

.alert-info {
    background-color: rgba(74, 158, 255, 0.1);
    border-left-color: var(--accent);
    color: var(--accent);
}

.error {
    background-color: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: 10vh 15vw;
    padding: 2rem;
    border-radius: 8px;
    width: 70vw;
    max-width: 1200px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 4px 6px var(--shadow);
    box-sizing: border-box;
}

/* Scrollbar styling for modal */
.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.close {
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}

.close:hover {
    color: var(--text-primary);
}

/* Grid */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    width: 100%;
    max-width: 100%;
}

.stat-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-wrap: wrap;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .modal-content {
        margin: 5vh 2.5vw;
        width: 95vw;
        max-height: 90vh;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.hidden { display: none; }
.visible { display: block; }

/* Status badges */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.status-for_payment {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

.status-paid {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.status-unpaid {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error);
}

.status-pending {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

.status-approved {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.status-rejected {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error);
}

/* Customer Selection Styles */
.customer-selection-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.selected-count {
    margin-left: 1rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    font-weight: 500;
    color: var(--accent);
}

.customer-row {
    transition: all 0.2s ease;
}

.customer-row.selected {
    background-color: rgba(74, 158, 255, 0.1);
    border-left: 3px solid var(--accent);
}

.customer-checkbox,
.collector-checkbox {
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.assignment-preview {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    border-left: 4px solid var(--accent);
}

.assignment-preview h4 {
    margin-bottom: 1rem;
    color: var(--accent);
}

.assignment-preview p {
    margin-bottom: 0.5rem;
}

/* Checkbox styling for better visibility in dark mode */
input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 3px;
    background-color: var(--bg-tertiary);
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
}

input[type="checkbox"]:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

input[type="checkbox"]:hover {
    border-color: var(--accent);
}

input[type="checkbox"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Assignment Mode Selector */
.assignment-mode-selector {
    display: flex;
    gap: 1rem;
    flex-direction: column;
}

.mode-option {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.mode-option:hover {
    border-color: var(--accent);
    background-color: rgba(74, 158, 255, 0.05);
}

.mode-option input[type="radio"] {
    margin-right: 0.5rem;
}

.mode-option input[type="radio"]:checked + span {
    color: var(--accent);
    font-weight: 600;
}

.mode-option span {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.mode-option small {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-left: 1.75rem;
}

.mode-option input[type="radio"]:checked ~ small {
    color: var(--text-primary);
}

/* Radio button styling */
input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    flex-shrink: 0;
}

input[type="radio"]:checked {
    border-color: var(--accent);
}

input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent);
}

input[type="radio"]:hover {
    border-color: var(--accent);
}

input[type="radio"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Enhanced Alert Styles for HTML Content */
.alert strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.alert ul {
    margin: 0.5rem 0 0.5rem 1.5rem;
}

.alert li {
    margin-bottom: 0.25rem;
}

.alert br {
    line-height: 1.8;
}

/* Confirmation Modal Specific Styles */
#confirmationModal .modal-content {
    max-width: 600px;
}

#confirmationContent {
    margin-bottom: 1.5rem;
}

#confirmationContent ul {
    list-style-type: disc;
    color: var(--text-primary);
}

#confirmationContent li {
    margin-bottom: 0.5rem;
}

/* Assignment Summary Styles */
.assignment-summary {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.assignment-summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.assignment-summary-item:last-child {
    border-bottom: none;
}

/* Assignment History Styles */
.history-filters {
    background: var(--bg-secondary);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.history-filters .grid {
    display: grid;
    gap: 1rem;
}

.history-filters .grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.history-filters .grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.text-link {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

.text-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
}

.pagination .btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

/* Workload indicators */
.workload-indicator {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

.workload-low {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.workload-medium {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

.workload-high {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error);
}

.workload-bar {
    height: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.workload-bar-fill {
    height: 100%;
    transition: width 0.3s ease;
}

.workload-bar-fill.low {
    background-color: var(--success);
}

.workload-bar-fill.medium {
    background-color: var(--warning);
}

.workload-bar-fill.high {
    background-color: var(--error);
}

/* Assignment trend indicators */
.trend-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
}

.trend-up {
    color: var(--success);
}

.trend-down {
    color: var(--error);
}

.trend-stable {
    color: var(--text-secondary);
}

/* Upload Progress Indicator Styles */
.upload-progress-container {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.upload-progress-bar {
    width: 100%;
    height: 30px;
    background-color: var(--bg-tertiary);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.upload-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    transition: width 0.3s ease;
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.upload-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.upload-progress-text {
    text-align: center;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

/* Processing animation */
.upload-progress-text::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '';
    }
    40% {
        content: '.';
    }
    60% {
        content: '..';
    }
    80%, 100% {
        content: '...';
    }
}

/* Interactive Assignment Interface Styles */
.workload-preview {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.25rem 0.5rem;
    background-color: rgba(74, 158, 255, 0.1);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    transition: all 0.3s ease;
}

.workload-preview:empty {
    display: none;
}

/* Enhanced customer row selection */
.customer-row {
    transition: all 0.2s ease;
    cursor: pointer;
}

.customer-row:hover {
    background-color: rgba(74, 158, 255, 0.05);
}

.customer-row.selected {
    background-color: rgba(74, 158, 255, 0.1);
    border-left: 3px solid var(--accent);
}

.customer-row.selected td:first-child {
    padding-left: calc(1rem - 3px);
}

/* Assignment preview animations */
.assignment-preview {
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.assignment-preview[style*="display: block"] {
    opacity: 1;
    transform: translateY(0);
}

/* Collector selection enhancements */
.collector-checkbox:checked + span {
    color: var(--accent);
    font-weight: 600;
}

/* Loading states */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Keyboard shortcut hints */
.keyboard-hint {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

/* Smooth transitions for form elements */
.form-group input,
.form-group select,
.form-group textarea {
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74, 158, 255, 0.2);
}

/* Enhanced modal animations */
.modal {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Reassignment warning styles */
.alert.alert-warning strong {
    color: var(--warning);
}

/* Selection counter animation */
.selected-count {
    transition: all 0.3s ease;
}

.selected-count:not(:empty) {
    animation: pulse 0.3s ease;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* Batch link hover effects */
a[href*="assign.php?batch="] {
    position: relative;
    overflow: hidden;
}

a[href*="assign.php?batch="]::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

a[href*="assign.php?batch="]:hover::before {
    left: 100%;
}

/* Improved checkbox visibility */
.customer-checkbox,
.collector-checkbox {
    transform: scale(1);
    transition: transform 0.2s ease;
}

.customer-checkbox:hover,
.collector-checkbox:hover {
    transform: scale(1.1);
}

.customer-checkbox:checked,
.collector-checkbox:checked {
    animation: checkboxPop 0.3s ease;
}

@keyframes checkboxPop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

/* ============================================
   Assignment Interface Enhancements
   ============================================ */

/* Bulk selection controls */
.customer-selection-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    padding: 0.5rem 0;
}

.customer-selection-controls .btn-group {
    display: flex;
    gap: 0.5rem;
}

/* Enhanced checkbox styling for better visibility */
.customer-checkbox,
.collector-checkbox {
    cursor: pointer;
    width: 18px;
    height: 18px;
    margin: 0;
}

.customer-checkbox:disabled,
.collector-checkbox:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Customer row selection states */
.customer-row {
    transition: all 0.2s ease;
    cursor: pointer;
}

.customer-row:hover {
    background-color: rgba(74, 158, 255, 0.05);
}

.customer-row.selected {
    background-color: rgba(74, 158, 255, 0.1);
    border-left: 3px solid var(--accent);
}

.customer-row.selected td:first-child {
    padding-left: calc(1rem - 3px);
}

.customer-row.reassignment {
    background-color: rgba(255, 152, 0, 0.05);
    border-left: 3px solid var(--warning);
}

.customer-row.reassignment td:first-child {
    padding-left: calc(1rem - 3px);
}

/* Assignment preview panel */
.assignment-preview {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    border-left: 4px solid var(--accent);
    animation: slideDown 0.3s ease;
}

.assignment-preview h4 {
    margin-bottom: 1rem;
    color: var(--accent);
    font-size: 1.1rem;
}

.assignment-preview p {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.assignment-preview-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.assignment-preview-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    color: var(--text-primary);
}

.assignment-preview-item strong {
    color: var(--text-primary);
}

.assignment-preview-item .count {
    color: var(--accent);
    font-weight: 600;
}

/* Confirmation dialog enhancements */
.confirmation-dialog {
    max-width: 600px;
}

.confirmation-content {
    margin: 1.5rem 0;
}

.confirmation-warning {
    background-color: rgba(255, 152, 0, 0.1);
    border: 1px solid var(--warning);
    border-radius: 4px;
    padding: 1rem;
    margin: 1rem 0;
}

.confirmation-warning strong {
    color: var(--warning);
    display: block;
    margin-bottom: 0.5rem;
}

.confirmation-list {
    list-style-type: disc;
    margin-left: 1.5rem;
    color: var(--text-primary);
}

.confirmation-list li {
    margin-bottom: 0.5rem;
}

/* Assignment history table enhancements */
.history-table {
    width: 100%;
}

.history-table th {
    position: sticky;
    top: 0;
    background-color: var(--bg-tertiary);
    z-index: 10;
}

.history-row {
    transition: background-color 0.2s ease;
}

.history-row:hover {
    background-color: rgba(74, 158, 255, 0.05);
}

.history-action-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.history-action-batch_assign {
    background-color: rgba(74, 158, 255, 0.2);
    color: var(--accent);
}

.history-action-individual_assign {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.history-action-reassign {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

/* Assignment filters */
.history-filters {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.history-filters .form-group {
    margin-bottom: 0;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

.filter-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Workload distribution visualization */
.workload-distribution {
    margin: 1rem 0;
}

.workload-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.workload-collector-name {
    min-width: 150px;
    font-weight: 500;
    color: var(--text-primary);
}

.workload-bar-container {
    flex: 1;
    height: 24px;
    background-color: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.workload-bar-fill {
    height: 100%;
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.workload-bar-fill.low {
    background: linear-gradient(90deg, var(--success), #66bb6a);
}

.workload-bar-fill.medium {
    background: linear-gradient(90deg, var(--warning), #ffb74d);
}

.workload-bar-fill.high {
    background: linear-gradient(90deg, var(--error), #ef5350);
}

.workload-count {
    min-width: 60px;
    text-align: right;
    font-weight: 600;
    color: var(--text-primary);
}

/* Assignment mode selector enhancements */
.assignment-mode-selector {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.mode-option {
    display: flex;
    align-items: flex-start;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mode-option:hover {
    border-color: var(--accent);
    background-color: rgba(74, 158, 255, 0.05);
    transform: translateX(2px);
}

.mode-option input[type="radio"] {
    margin-right: 0.75rem;
    margin-top: 0.25rem;
}

.mode-option-content {
    flex: 1;
}

.mode-option-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.mode-option-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.mode-option input[type="radio"]:checked ~ .mode-option-content .mode-option-title {
    color: var(--accent);
}

.mode-option input[type="radio"]:checked ~ .mode-option-content .mode-option-description {
    color: var(--text-primary);
}

.mode-option.active {
    border-color: var(--accent);
    background-color: rgba(74, 158, 255, 0.1);
}

/* Selected count badge */
.selected-count {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    font-weight: 500;
    color: var(--accent);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.selected-count:empty {
    display: none;
}

.selected-count.has-selection {
    background-color: rgba(74, 158, 255, 0.1);
    border-color: var(--accent);
    animation: pulse 0.3s ease;
}

.selected-count-icon {
    font-size: 1.1rem;
}

/* Collector selection list */
.collector-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.collector-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.collector-item:hover {
    background-color: rgba(74, 158, 255, 0.05);
}

.collector-item.selected {
    background-color: rgba(74, 158, 255, 0.1);
    border-left: 3px solid var(--accent);
    padding-left: calc(0.75rem - 3px);
}

.collector-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.collector-workload {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   Payment Management Styles
   ============================================ */

/* Payment arrangement indicator */
.payment-arrangement-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background-color: rgba(255, 152, 0, 0.2);
    border: 1px solid var(--warning);
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--warning);
}

/* Extension date highlight */
.extension-date {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--warning);
    font-weight: 500;
}

.extension-date-icon {
    font-size: 1.1rem;
}

/* Payment method badges */
.payment-method-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.payment-method-cash {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.payment-method-gcash {
    background-color: rgba(33, 150, 243, 0.2);
    color: #42a5f5;
}

.payment-method-paymaya {
    background-color: rgba(156, 39, 176, 0.2);
    color: #ab47bc;
}

.payment-method-arrangement {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

/* Date picker styling */
input[type="date"] {
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
    cursor: pointer;
}

input[type="date"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
    cursor: pointer;
}

/* Notification badge for payment arrangements */
.arrangement-notification {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background-color: rgba(255, 152, 0, 0.1);
    border-left: 4px solid var(--warning);
    border-radius: 4px;
    margin: 0.5rem 0;
}

.arrangement-notification-icon {
    font-size: 1.5rem;
}

.arrangement-notification-text {
    flex: 1;
}

.arrangement-notification-date {
    font-weight: 600;
    color: var(--warning);
}

/* Table responsiveness improvements */
.table-container {
    overflow-x: auto;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
}

.table {
    min-width: 800px; /* Ensure table doesn't get too cramped */
}

/* Action buttons in tables */
.table td button {
    white-space: nowrap;
    margin: 0.25rem 0;
}

/* Ensure buttons don't wrap awkwardly */
.table td:last-child {
    min-width: 200px;
}

/* ============================================
   Mobile Responsiveness
   ============================================ */

@media (max-width: 768px) {
    /* Container and layout */
    .container {
        padding: 10px;
    }
    
    /* Header */
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem 10px;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    /* Navigation */
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
    
    .nav a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    /* User info */
    .user-info {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
    }
    
    .user-info span {
        font-size: 0.875rem;
    }
    
    /* Tables */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table {
        min-width: 600px;
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
    
    /* Buttons */
    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
    
    .btn-sm {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }
    
    /* Forms */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Grid layouts */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    /* Stats */
    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    /* Cards */
    .card {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    /* Modals */
    .modal-content {
        margin: 5% auto;
        width: 95%;
        max-width: 95%;
        padding: 1rem;
    }
    
    .modal-header {
        padding-bottom: 0.75rem;
    }
    
    .modal-title {
        font-size: 1.125rem;
    }
    
    /* Assignment interface */
    .customer-selection-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .customer-selection-controls .btn {
        width: 100%;
    }
    
    .customer-selection-controls .btn-group {
        flex-direction: column;
    }
    
    .selected-count {
        margin-left: 0;
        margin-top: 0.5rem;
        text-align: center;
        justify-content: center;
    }
    
    .workload-preview {
        display: block;
        margin-left: 0;
        margin-top: 0.25rem;
    }
    
    .assignment-preview {
        padding: 1rem;
    }
    
    .filter-row {
        grid-template-columns: 1fr;
    }
    
    .workload-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .workload-collector-name {
        min-width: auto;
    }
    
    .workload-count {
        text-align: left;
    }
    
    .history-filters {
        padding: 0.75rem;
    }
    
    .mode-option {
        padding: 0.75rem;
    }
    
    /* Alerts */
    .alert {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
    
    /* Login form */
    .login-form {
        margin: 2rem auto;
        padding: 1.5rem;
    }
    
    /* Notification bell */
    .notification-bell {
        padding: 0.375rem;
    }
    
    .notification-count {
        width: 18px;
        height: 18px;
        font-size: 0.7rem;
    }
    
    /* Status badges */
    .status-badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    /* Payment method badges */
    .payment-method-badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.5rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .container {
        padding: 5px;
    }
    
    .header-content {
        padding: 0.75rem 5px;
    }
    
    .nav a {
        padding: 0.4rem 0.6rem;
        font-size: 0.8125rem;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .table {
        font-size: 0.8125rem;
    }
    
    .btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    h3 {
        font-size: 1.125rem;
    }
}

/* ============================================
   Enhanced Feedback Message Styles
   ============================================ */

/* Feedback message severity levels */
.feedback-message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border-left: 4px solid;
    animation: slideDown 0.3s ease;
}

.feedback-message.severity-critical {
    background-color: rgba(244, 67, 54, 0.15);
    border-left-color: var(--error);
    color: var(--error);
}

.feedback-message.severity-high {
    background-color: rgba(255, 152, 0, 0.15);
    border-left-color: var(--warning);
    color: var(--warning);
}

.feedback-message.severity-medium {
    background-color: rgba(74, 158, 255, 0.15);
    border-left-color: var(--accent);
    color: var(--accent);
}

.feedback-message.severity-low {
    background-color: rgba(76, 175, 80, 0.15);
    border-left-color: var(--success);
    color: var(--success);
}

/* Enhanced alert styles with icons */
.alert {
    position: relative;
    padding-left: 3rem;
}

.alert::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: bold;
}

.alert-success::before {
    content: '✓';
    color: var(--success);
}

.alert-error::before {
    content: '✗';
    color: var(--error);
}

.alert-warning::before {
    content: '⚠';
    color: var(--warning);
}

.alert-info::before {
    content: 'ℹ';
    color: var(--accent);
}

/* Detailed feedback sections */
.feedback-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.feedback-details strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feedback-details ul {
    margin: 0.5rem 0 0 1.5rem;
    list-style-type: disc;
}

.feedback-details li {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Error category badges */
.error-category-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-right: 0.5rem;
}

.error-category-validation {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error);
}

.error-category-processing {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

.error-category-database {
    background-color: rgba(156, 39, 176, 0.2);
    color: #ce93d8;
}

.error-category-general {
    background-color: rgba(158, 158, 158, 0.2);
    color: var(--text-secondary);
}

/* Progress indicator enhancements */
.upload-progress-container {
    animation: fadeIn 0.3s ease;
}

.upload-progress-bar {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.upload-progress-fill {
    box-shadow: 0 2px 8px rgba(74, 158, 255, 0.4);
}

.upload-progress-percentage {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    z-index: 1;
}

/* Loading state indicators */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-spinner-large {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

.loading-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

/* Feedback summary cards */
.feedback-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.feedback-summary-item {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
}

.feedback-summary-number {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.feedback-summary-number.success {
    color: var(--success);
}

.feedback-summary-number.error {
    color: var(--error);
}

.feedback-summary-number.warning {
    color: var(--warning);
}

.feedback-summary-number.info {
    color: var(--accent);
}

.feedback-summary-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   Form Validation Styles
   ============================================ */

/* Validation error messages */
.validation-error-message {
    animation: slideDown 0.3s ease;
}

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

.validation-error-message .message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.validation-error-message .message-icon {
    font-size: 1.25rem;
}

.validation-error-message .message-details ul {
    margin: 0.5rem 0 0 1.5rem;
    list-style-type: disc;
}

.validation-error-message .message-details li {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Inline error messages */
.inline-error {
    display: block;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    animation: fadeIn 0.2s ease;
}

/* Invalid field styling */
input.invalid,
select.invalid,
textarea.invalid {
    border-color: var(--error) !important;
    background-color: rgba(244, 67, 54, 0.05);
}

input.invalid:focus,
select.invalid:focus,
textarea.invalid:focus {
    box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.1);
}

/* Valid field styling */
input.valid,
select.valid,
textarea.valid {
    border-color: var(--success);
}

input.valid:focus,
select.valid:focus,
textarea.valid:focus {
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

/* Message component styles */
.message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border-left: 4px solid;
    animation: slideDown 0.3s ease;
}

.message-error {
    background-color: rgba(244, 67, 54, 0.1);
    border-left-color: var(--error);
    color: var(--error);
}

.message-warning {
    background-color: rgba(255, 152, 0, 0.1);
    border-left-color: var(--warning);
    color: var(--warning);
}

.message-info {
    background-color: rgba(74, 158, 255, 0.1);
    border-left-color: var(--accent);
    color: var(--accent);
}

.message-success {
    background-color: rgba(76, 175, 80, 0.1);
    border-left-color: var(--success);
    color: var(--success);
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.message-icon {
    font-size: 1.25rem;
    font-weight: bold;
}

.message-details {
    margin-top: 0.75rem;
    color: var(--text-primary);
}

.message-details ul {
    margin: 0.5rem 0 0 1.5rem;
    list-style-type: disc;
}

.message-details li {
    margin-bottom: 0.5rem;
}

.message-suggestions {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-primary);
}

.message-suggestions strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.message-suggestions ul {
    margin: 0.5rem 0 0 1.5rem;
    list-style-type: circle;
}

.message-suggestions li {
    margin-bottom: 0.5rem;
}

/* Form validation feedback icons */
.form-group {
    position: relative;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--error);
    padding-right: 2.5rem;
}

.form-group.has-success input,
.form-group.has-success select,
.form-group.has-success textarea {
    border-color: var(--success);
    padding-right: 2.5rem;
}

.form-group .validation-icon {
    position: absolute;
    right: 0.75rem;
    top: 2.5rem;
    font-size: 1.25rem;
    pointer-events: none;
}

.form-group.has-error .validation-icon {
    color: var(--error);
}

.form-group.has-success .validation-icon {
    color: var(--success);
}

/* Loading state for form submission */
.form-submitting {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.form-submitting::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin-left: -20px;
    margin-top: -20px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Validation tooltip */
.validation-tooltip {
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0.75rem;
    background-color: var(--error);
    color: white;
    border-radius: 4px;
    font-size: 0.875rem;
    white-space: nowrap;
    z-index: 10;
    animation: fadeIn 0.2s ease;
}

.validation-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 1rem;
    border: 5px solid transparent;
    border-top-color: var(--error);
}

/* Required field indicator */
.form-group label.required::after {
    content: ' *';
    color: var(--error);
}

/* Validation summary */
.validation-summary {
    background-color: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.validation-summary-title {
    color: var(--error);
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.validation-summary-list {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.validation-summary-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(244, 67, 54, 0.2);
    color: var(--text-primary);
}

.validation-summary-list li:last-child {
    border-bottom: none;
}

.validation-summary-list li::before {
    content: '•';
    color: var(--error);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Character counter for text inputs */
.character-counter {
    display: block;
    text-align: right;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.character-counter.warning {
    color: var(--warning);
}

.character-counter.error {
    color: var(--error);
}

/* Validation progress indicator */
.validation-progress {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.validation-progress-item {
    flex: 1;
    height: 4px;
    background-color: var(--bg-tertiary);
    border-radius: 2px;
    transition: background-color 0.3s ease;
}

.validation-progress-item.complete {
    background-color: var(--success);
}

.validation-progress-item.error {
    background-color: var(--error);
}

/* Responsive validation styles */
@media (max-width: 768px) {
    .validation-tooltip {
        position: static;
        margin-bottom: 0;
        margin-top: 0.5rem;
        white-space: normal;
    }
    
    .validation-tooltip::after {
        display: none;
    }
    
    .message {
        font-size: 0.9rem;
    }
    
    .message-icon {
        font-size: 1rem;
    }
}

/* Accessibility improvements */
.form-group input[aria-invalid="true"],
.form-group select[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
    border-color: var(--error);
}

.form-group input[aria-invalid="false"],
.form-group select[aria-invalid="false"],
.form-group textarea[aria-invalid="false"] {
    border-color: var(--success);
}

/* Focus states for better accessibility */
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Error shake animation */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.5s ease;
}

/* Success checkmark animation */
@keyframes checkmark {
    0% {
        transform: scale(0) rotate(45deg);
    }
    50% {
        transform: scale(1.2) rotate(45deg);
    }
    100% {
        transform: scale(1) rotate(45deg);
    }
}

.success-checkmark {
    animation: checkmark 0.4s ease;
}


/* Bell shake animation for real-time notifications */
@keyframes bellShake {
    0%, 100% {
        transform: rotate(0deg);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: rotate(-10deg);
    }
    20%, 40%, 60%, 80% {
        transform: rotate(10deg);
    }
}

.notification-bell-shake {
    animation: bellShake 0.5s ease-in-out;
}


/* Fade out animation for notifications */
@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}