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

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1f2937;
    --light: #f3f4f6;
    --white: #ffffff;
    --border: #e5e7eb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    min-height: 100vh;
    color: var(--dark);
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.company-name {
    display: block;
    font-size: 0.75rem;
    color: #999;
    margin-top: 0.25rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s;
}

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

.nav-link.active {
    color: var(--white);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

/* Container */
.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    color: var(--white);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

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

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.stat-icon {
    font-size: 3rem;
}

.stat-content h3 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-content p {
    color: #666;
    font-size: 0.9rem;
}

.stat-card.preferred .stat-content h3 { color: var(--primary); }
.stat-card.approved .stat-content h3 { color: var(--success); }
.stat-card.processing .stat-content h3 { color: var(--warning); }
.stat-card.completed .stat-content h3 { color: var(--success); }

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

/* Card */
.card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card h3 {
    margin-bottom: 1.5rem;
    color: var(--dark);
}

/* Activity List */
.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}

.activity-item:hover {
    background: var(--light);
}

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

.activity-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.activity-title {
    font-weight: 600;
    color: var(--dark);
}

.activity-status {
    font-size: 0.85rem;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

.activity-status.processing { background: #fef3c7; color: #92400e; }
.activity-status.completed { background: #d1fae5; color: #065f46; }

.activity-meta {
    font-size: 0.85rem;
    color: #666;
}

/* Compliance Meter */
.compliance-meter {
    margin-bottom: 1.5rem;
}

.meter-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.meter-bar {
    height: 24px;
    background: var(--light);
    border-radius: 12px;
    overflow: hidden;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success), #059669);
    transition: width 0.5s;
}

.compliance-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.compliance-stat {
    text-align: center;
    padding: 1rem;
    border-radius: 8px;
}

.compliance-stat span {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.25rem;
}

.compliance-stat.verified {
    background: #d1fae5;
    color: #065f46;
}

.compliance-stat.unknown {
    background: #fef3c7;
    color: #92400e;
}

.compliance-stat.non-compliant {
    background: #fee2e2;
    color: #991b1b;
}

/* Vendors List */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-bar select,
.filter-bar input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--white);
}

.filter-bar input {
    flex: 1;
}

.vendors-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.vendor-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.vendor-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.vendor-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.vendor-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

.vendor-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.vendor-badge.preferred { background: #dbeafe; color: #1e40af; }
.vendor-badge.approved { background: #d1fae5; color: #065f46; }
.vendor-badge.manual_review { background: #fef3c7; color: #92400e; }
.vendor-badge.blocked { background: #fee2e2; color: #991b1b; }

.vendor-info {
    margin-bottom: 1rem;
    color: #666;
    font-size: 0.9rem;
}

.vendor-info a {
    color: var(--primary);
    text-decoration: none;
}

.vendor-specialties {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.specialty-tag {
    background: var(--light);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    color: #666;
}

.vendor-stats {
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: #666;
}

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

.vendor-actions button {
    flex: 1;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.vendor-actions button:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close {
    font-size: 2rem;
    cursor: pointer;
    color: #666;
}

.modal-close:hover {
    color: var(--danger);
}

/* Form */
form {
    padding: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: #666;
    font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .stats-grid,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .vendors-list {
        grid-template-columns: 1fr;
    }
}