/* 学生卡片样式 */
.student-card {
    background: var(--card-background);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.student-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.student-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.student-info i {
    font-size: 2rem;
    color: var(--primary-color);
}

.info h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.student-actions {
    display: flex;
    gap: 10px;
}

/* 按钮样式 */
.btn-icon {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition-speed);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-speed);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-speed);
    margin: 5px;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--background-color);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.2rem;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
}

.modal-body {
    padding: 20px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-color);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* 课程列表样式 */
.subjects-list {
    max-height: 400px;
    overflow-y: auto;
}

.subject-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
}

.subject-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.subject-info h4 {
    margin-bottom: 5px;
    font-size: 1rem;
}

.subject-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.no-subjects {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
    }

    .student-card {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .student-info {
        flex-direction: column;
    }

    .student-actions {
        width: 100%;
        justify-content: center;
    }
}