body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(to right, #f8fafc, #e2e8f0);
    padding: 40px 20px;
    color: #334155;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #1e293b;
}

.form-group {
    margin-bottom: 15px;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #334155;
}

select,
input {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    transition: border-color 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

input:invalid {
    border-color: #ef4444;
}

.result {
    margin-top: 20px;
    background-color: #f1f5f9;
    padding: 20px;
    border-radius: 10px;
    font-size: 16px;
    color: #1e293b;
    line-height: 1.6;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

button {
    padding: 10px 20px;
    background-color: #3b82f6;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #2563eb;
}

button.secondary {
    background-color: #94a3b8;
}

button.secondary:hover {
    background-color: #64748b;
}

button.danger {
    background-color: #ef4444;
}

button.danger:hover {
    background-color: #dc2626;
}

button.small-btn {
    padding: 5px 10px;
    font-size: 14px;
}

.comparison-section {
    margin-top: 40px;
}

.table-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.table-container {
    overflow-x: auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background: #ffffff;
}

th,
td {
    padding: 12px;
    border-bottom: 1px solid #e2e8f0;
}

th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #334155;
    position: relative;
}

th.sortable {
    cursor: pointer;
    padding-right: 30px;
}

th.sortable:after {
    content: "↕️";
    position: absolute;
    right: 8px;
    color: #94a3b8;
}

th.sorted-asc:after {
    content: "↑";
    color: #3b82f6;
}

th.sorted-desc:after {
    content: "↓";
    color: #3b82f6;
}

tr:hover {
    background-color: #f8fafc;
}

.remove-btn {
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 12px;
}

.remove-btn:hover {
    background-color: #dc2626;
}

.tooltip {
    position: relative;
    display: inline-block;
    margin-left: 5px;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #334155;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 12px;
    font-weight: normal;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

.custom-model-form {
    background-color: #f1f5f9;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.exchange-rate-form {
    background-color: #f1f5f9;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.custom-model-badge {
    background-color: #818cf8;
    color: white;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 5px;
    display: inline-block;
}

.manage-models-container {
    margin-top: 15px;
}

.manage-models-btn {
    background-color: transparent;
    color: #3b82f6;
    border: 1px solid #3b82f6;
    padding: 5px 10px;
    font-size: 14px;
}

.manage-models-btn:hover {
    background-color: #eff6ff;
}

.custom-models-list {
    margin-top: 10px;
    background-color: #f8fafc;
    border-radius: 8px;
    padding: 10px;
    display: none;
}

.custom-model-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    border-bottom: 1px solid #e2e8f0;
}

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

.currency-selector {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    gap: 10px;
}

.currency-selector label {
    margin-bottom: 0;
    margin-right: 5px;
}

.currency-selector select {
    width: auto;
}

@media (max-width: 600px) {
    .button-group {
        flex-direction: column;
    }

    .form-row {
        flex-direction: column;
        gap: 10px;
    }

    .currency-selector {
        flex-wrap: wrap;
    }
}