:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --background-color: #f1f5f9;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px 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);
    
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    gap: 2rem;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.nav-item {
    background: none;
    border: none;
    text-align: left;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: #f8fafc;
    color: var(--primary-color);
}

.nav-item.active {
    background-color: #eff6ff;
    color: var(--primary-color);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info .name {
    font-weight: 600;
    font-size: 0.875rem;
}

.user-info .role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    height: 70px;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.top-bar h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.1s, opacity 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

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

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

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

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.warning { background-color: #fff7ed; color: var(--warning-color); }
.stat-icon.success { background-color: #f0fdf4; color: var(--success-color); }
.stat-icon.danger { background-color: #fef2f2; color: var(--danger-color); }

.stat-info h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Tables */
.table-container {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

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

.data-table th, .data-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Form */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

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

.step.active {
    color: var(--primary-color);
    font-weight: 600;
}

.form-step {
    display: none;
}

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

.form-step h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.highlight-box {
    background-color: #fef2f2;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid #fee2e2;
}

/* Report Paper */
.report-paper {
    background-color: white;
    max-width: 21cm;
    min-height: 29.7cm;
    margin: 0 auto;
    padding: 2cm;
    box-shadow: var(--shadow-lg);
    font-family: 'Times New Roman', serif;
    line-height: 1.5;
}

.view-section.hidden {
    display: none;
}

.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    font-size: 1.5rem;
    transition: transform 0.2s;
}

.fab:hover {
    transform: scale(1.1);
}

@media print {
    body * {
        visibility: hidden;
    }
    #report-output, #report-output * {
        visibility: visible;
    }
    #report-output {
        position: absolute;
        left: 0;
        top: 0;
        box-shadow: none;
        padding: 0;
        margin: 0;
    }
}

/* Case Detail & Workflow Styles */
.case-header-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.case-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

#case-detail-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.status-badge {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
    background-color: var(--primary-color);
}

.workflow-container {
    background-color: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.workflow-timeline {
    position: relative;
    padding-left: 2rem;
    margin-top: 1.5rem;
}

.workflow-timeline::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-step {
    position: relative;
    padding-bottom: 2rem;
}

.step-marker {
    position: absolute;
    left: -2rem;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background-color: white;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    z-index: 1;
}

.timeline-step.completed .step-marker {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

.timeline-step.active .step-marker {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: 0 0 0 4px #eff6ff;
}

.step-content {
    background-color: #f8fafc;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.timeline-step.active .step-content {
    background-color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.step-title {
    font-weight: 600;
    font-size: 1rem;
}

.step-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.step-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.tag-risk {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background-color: #fee2e2;
    color: #ef4444;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.5rem;
}