:root {
    --primary-color: #0d6efd;
    --sidebar-width: 250px;
}

body {
    background-color: #f4f6f9;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar-brand {
    font-size: 1.4rem;
    letter-spacing: 0.5px;
}

.card {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    font-weight: 600;
}

.stat-card {
    border-left: 4px solid var(--primary-color);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: 0.3;
}

.stat-card .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6c757d;
}

.table th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6c757d;
}

.btn {
    border-radius: 8px;
    padding: 8px 20px;
    font-weight: 500;
}

.form-control, .form-select {
    border-radius: 8px;
    padding: 10px 15px;
    border: 1px solid #dee2e6;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13,110,253,0.15);
}

.footer {
    margin-top: auto;
}

.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.login-card {
    border-radius: 15px;
    border: none;
}

.login-card .card-body {
    padding: 2.5rem;
}

.login-logo {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.role-selector .btn {
    border: 2px solid #dee2e6;
    padding: 15px;
    transition: all 0.3s;
}

.role-selector .btn:hover,
.role-selector .btn.active {
    border-color: var(--primary-color);
    background-color: rgba(13,110,253,0.05);
}

.role-selector .btn i {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 5px;
}

.investment-progress {
    height: 10px;
    border-radius: 5px;
}

.team-grid .member-card {
    border: 2px dashed #dee2e6;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.team-grid .member-card.filled {
    border-style: solid;
    border-color: var(--primary-color);
    background-color: rgba(13,110,253,0.03);
}

.alert {
    border-radius: 10px;
    border: none;
}

.transaction-list .list-group-item {
    border-left: 3px solid transparent;
}

.transaction-list .list-group-item.income {
    border-left-color: #198754;
}

.transaction-list .list-group-item.expense {
    border-left-color: #dc3545;
}

@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.3rem;
    }
}