.homework-box {
    margin: 28px auto 10px;
    max-width: 520px;
    padding: 20px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
}

.homework-box label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.homework-box input[type="text"] {
    width: 100%;
    box-sizing: border-box;
    padding: 10px;
    margin-bottom: 14px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    font-size: 16px;
}

.homework-hp {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.homework-send,
.homework-keep,
.homework-delete-btn,
.homework-filter button {
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}

.homework-send {
    display: inline-block;
    border: 2px solid #007bff;
    background: #007bff;
    color: #fff;
}

.homework-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.homework-keep {
    margin: 0 10px 0 0;
    border: 2px solid #6c757d;
    background: #fff;
    color: #333;
}

.homework-keep:not([hidden]) {
    display: inline-block;
}

.homework-keep[hidden] {
    display: none !important;
}

body.homework-mode .cloze-gap.filled,
.cloze-gap.filled.hw-filled {
    border-color: #9ec5e8 !important;
    background: #e7f1ff !important;
    color: #212529 !important;
}

.homework-note {
    margin: 0 0 12px;
    padding: 10px 12px;
    border-radius: 6px;
}

.homework-warning {
    background: #fff3cd;
    color: #664d03;
    border: 1px solid #ffecb5;
}

.homework-error {
    background: #f8d7da;
    color: #842029;
    border: 1px solid #f5c2c7;
}

.homework-thanks {
    margin: 0;
    padding: 14px 16px;
    background: #d1e7dd;
    color: #0f5132;
    border: 1px solid #badbcc;
    border-radius: 6px;
    font-size: 18px;
}

.homework-teacher {
    max-width: 900px;
    margin: 0 auto 40px;
}

.homework-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin: 16px 0 24px;
}

.homework-filter select {
    min-width: 220px;
    padding: 8px;
    font-size: 16px;
}

.homework-table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0 24px;
}

.homework-table th,
.homework-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid #e5e5e5;
    vertical-align: top;
}

.homework-table th {
    background: #f8f9fa;
}

.homework-table a {
    color: #0d6efd;
}

.hw-right {
    background: #d1e7dd;
}

.hw-wrong {
    background: #f8d7da;
}

.hw-empty {
    color: #6c757d;
    font-style: italic;
}

.homework-banner {
    padding: 10px 12px;
    background: #d1e7dd;
    border-radius: 6px;
}

.homework-delete {
    margin-top: 12px;
}

.homework-delete-btn {
    border: 2px solid #dc3545;
    background: #dc3545;
    color: #fff;
    margin-right: 12px;
}

.homework-table-wrap {
    overflow-x: auto;
}