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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

.header-bar {
    background: white;
    border-radius: 16px;
    padding: 24px 32px;
    margin-bottom: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

h1 {
    font-size: 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.stat-label {
    color: #64748b;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
}

.stat-change {
    font-size: 12px;
    color: #10b981;
    margin-top: 4px;
}

.main-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.toolbar {
    background: #f8fafc;
    padding: 24px 32px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.search-box {
    flex: 1;
    min-width: 300px;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}

.filter-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-secondary {
    background: #e2e8f0;
    color: #475569;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

select {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
}

select:focus {
    outline: none;
    border-color: #667eea;
}

.form-container {
    display: none;
    background: #f8fafc;
    padding: 32px;
    border-bottom: 1px solid #e2e8f0;
}

.form-container.active {
    display: block;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

label {
    font-weight: 600;
    margin-bottom: 8px;
    color: #334155;
    font-size: 14px;
}

input[type="text"],
input[type="number"],
input[type="date"] {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s;
}

input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.smart-calc {
    background: #eff6ff;
    padding: 16px;
    border-radius: 10px;
    margin-top: 12px;
    border-left: 4px solid #3b82f6;
}

.smart-calc-label {
    font-size: 12px;
    color: #1e40af;
    font-weight: 600;
    margin-bottom: 4px;
}

.smart-calc-value {
    font-size: 20px;
    font-weight: 700;
    color: #1e40af;
}

.table-wrapper {
    padding: 32px;
    overflow-x: auto;
}

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

th {
    background: #f8fafc;
    padding: 16px;
    text-align: left;
    font-weight: 600;
    color: #475569;
    font-size: 13px;
    border-bottom: 2px solid #e2e8f0;
    position: sticky;
    top: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 16px;
    border-bottom: 1px solid #e2e8f0;
    font-size: 14px;
    color: #334155;
}

tr:hover {
    background: #f8fafc;
}

.actions {
    display: flex;
    gap: 8px;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: #94a3b8;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #94a3b8;
}

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

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f4f6;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    display: none;
    align-items: center;
    gap: 12px;
    z-index: 1000;
}

.notification.show {
    display: flex;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Document Attachments Styles */
.form-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.attachments-container {
    margin-top: 16px;
}

.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 24px;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f1f5f9;
}

.upload-area.drag-over {
    border-color: #667eea;
    background: #eff6ff;
    transform: scale(1.01);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
    color: #94a3b8;
}

.upload-text {
    font-size: 16px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 8px;
}

.upload-subtext {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 20px;
}

.attachments-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
    max-height: 200px;
    overflow-y: auto;
    padding-right: 8px;
}

.attachment-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s;
}

.attachment-item:hover {
    border-color: #cbd5e1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.attachment-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.file-icon {
    font-size: 24px;
    color: #64748b;
    flex-shrink: 0;
}

.file-details {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 600;
    color: #334155;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 12px;
    color: #64748b;
    margin-top: 2px;
}

.attachment-progress {
    width: 80px;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 12px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s;
    width: 0%;
}

.remove-attachment {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.remove-attachment:hover {
    background: #fee2e2;
    transform: scale(1.1);
}

.attachments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.existing-attachment {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 16px;
    transition: all 0.3s;
}

.existing-attachment:hover {
    border-color: #cbd5e1;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.attachment-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.attachment-type {
    display: inline-block;
    padding: 4px 8px;
    background: #dbeafe;
    color: #1e40af;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.attachment-actions {
    display: flex;
    gap: 8px;
}

.attachment-preview-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.3s;
}

.attachment-preview-btn:hover {
    background: #059669;
    transform: translateY(-1px);
}

.attachment-delete-btn {
    background: #ef4444;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.3s;
}

.attachment-delete-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.no-attachments {
    text-align: center;
    padding: 40px 20px;
    color: #94a3b8;
}

.no-attachments-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* Preview Modal */
.preview-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.preview-modal.active {
    display: flex;
}

.preview-content {
    background: white;
    border-radius: 16px;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.preview-header {
    background: #f8fafc;
    padding: 20px 24px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-title {
    font-weight: 600;
    color: #334155;
    font-size: 18px;
}

.preview-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #64748b;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.3s;
}

.preview-close:hover {
    color: #334155;
    background: #e2e8f0;
}

.preview-body {
    padding: 24px;
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

.preview-iframe {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: 8px;
}

.preview-image {
    max-width: 100%;
    max-height: 600px;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
}

.preview-unsupported {
    text-align: center;
    padding: 60px 20px;
    color: #64748b;
}

.preview-unsupported-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    .attachments-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-content {
        width: 95%;
        max-height: 80vh;
    }
    
    .preview-iframe {
        height: 400px;
    }
}