body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #172B4D;
    margin: 0;
    padding: 10px;
}

.container {
    max-width: 100%;
    margin: 0 auto;
}

h2 {
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 16px;
}

h3 {
    font-size: 16px;
    margin-top: 0;
    margin-bottom: 12px;
}

.form-group {
    margin-bottom: 12px;
}

label {
    display: block;
    margin-bottom: 4px;
    font-weight: bold;
}

input[type="text"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 8px;
    border: 1px solid #DFE1E6;
    border-radius: 3px;
    box-sizing: border-box;
    font-size: 14px;
}

button {
    padding: 8px 12px;
    background-color: #0079BF;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
}

button:hover {
    background-color: #026AA7;
}

.tabs {
    display: flex;
    border-bottom: 1px solid #DFE1E6;
    margin-bottom: 16px;
}

.tab {
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
}

.tab.active {
    border-bottom-color: #0079BF;
    font-weight: bold;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.summary {
    margin-top: 16px;
    padding: 12px;
    background-color: #F4F5F7;
    border-radius: 3px;
}

.materials-list,
.history-list {
    margin-top: 16px;
}

.material-item,
.history-item {
    padding: 10px;
    border-bottom: 1px solid #DFE1E6;
    display: flex;
    justify-content: space-between;
}

.history-item {
    flex-direction: column;
}

.history-date {
    color: #5E6C84;
    font-size: 12px;
}

.history-type {
    font-weight: bold;
    margin: 4px 0;
}

.history-details {
    margin-top: 4px;
}